{ "instance": { "tcbk-20191231.htm": { "axisCustom": 0, "axisStandard": 42, "contextCount": 847, "dts": { "calculationLink": { "local": [ "tcbk-20191231_cal.xml" ] }, "definitionLink": { "local": [ "tcbk-20191231_def.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-eedm-def-2018-01-31.xml", "http://xbrl.fasb.org/srt/2018/elts/srt-eedm1-def-2018-01-31.xml" ] }, "inline": { "local": [ "tcbk-20191231.htm" ] }, "labelLink": { "local": [ "tcbk-20191231_lab.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-doc-2018-01-31.xml", "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml", "http://xbrl.fasb.org/srt/2018/elts/srt-doc-2018-01-31.xml" ] }, "presentationLink": { "local": [ "tcbk-20191231_pre.xml" ] }, "referenceLink": { "remote": [ "http://xbrl.fasb.org/srt/2018/elts/srt-ref-2018-01-31.xml", "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-ref-2018-01-31.xml", "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml" ] }, "schema": { "local": [ "tcbk-20191231.xsd" ], "remote": [ "http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd", "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd", "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd", "http://www.xbrl.org/2003/xl-2003-12-31.xsd", "http://www.xbrl.org/2003/xlink-2003-12-31.xsd", "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd", "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "http://xbrl.fasb.org/srt/2018/elts/srt-types-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-roles-2018-01-31.xsd", "http://xbrl.fasb.org/srt/2018/elts/srt-roles-2018-01-31.xsd", "http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-types-2018-01-31.xsd", "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd", "http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd", "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd", "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "http://xbrl.fasb.org/us-gaap/2018/elts/us-parts-codification-2018-01-31.xsd" ] } }, "elementCount": 1097, "entityCount": 1, "hidden": { "http://tcbk.com/20191231": 2, "http://xbrl.sec.gov/dei/2019-01-31": 7, "total": 9 }, "keyCustom": 180, "keyStandard": 642, "memberCustom": 42, "memberStandard": 66, "nsprefix": "tcbk", "nsuri": "http://tcbk.com/20191231", "report": { "R1": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "000010001 - Document - Cover Page", "role": "http://tcbk.com/role/CoverPage", "shortName": "Cover Page", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210161004 - Disclosure - Loans", "role": "http://tcbk.com/role/Loans", "shortName": "Loans", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R100": { "firstAnchor": { "ancestors": [ "span", "div", "tcbk:JuniorSubordinatedDebtTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "tcbk:NumberOfSubsidiaryBusinessTrust", "reportCount": 1, "unitRef": "trust", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240694041 - Disclosure - Junior Subordinated Debt - Additional Information (Detail)", "role": "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "shortName": "Junior Subordinated Debt - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "tcbk:JuniorSubordinatedDebtTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "lang": null, "name": "tcbk:NumberOfLocationsOrganized", "reportCount": 1, "unique": true, "unitRef": "location", "xsiNil": "false" } }, "R101": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DebtInstrumentFaceAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240704042 - Disclosure - Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail)", "role": "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail", "shortName": "Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DebtInstrumentFaceAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R102": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RestrictedCashAndCashEquivalents", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240734043 - Disclosure - Commitments and Contingencies - Additional Information (Detail)", "role": "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail", "shortName": "Commitments and Contingencies - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RestrictedCashAndCashEquivalents", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R103": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": null, "first": true, "lang": null, "name": "us-gaap:CommitmentsAndContingencies", "reportCount": 1, "unitRef": "usd", "xsiNil": "true" }, "groupType": "disclosure", "isDefault": "false", "longName": "240744044 - Disclosure - Commitments and Contingencies - Summary of Bank's Commitments and Contingent Liabilities (Detail)", "role": "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail", "shortName": "Commitments and Contingencies - Summary of Bank's Commitments and Contingent Liabilities (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock", "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i0f05e79dedb04aa395057f988e999ffa_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:CommitmentsAndContingencies", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R104": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ProceedsFromDividendsReceived", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240764045 - Disclosure - Shareholders' Equity - Additional Information (Detail)", "role": "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "shortName": "Shareholders' Equity - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ProceedsFromDividendsReceived", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R105": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240794046 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "shortName": "Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i0d1d3cb83d8b4390912c883d8d833dc0_D20190101-20191231", "decimals": null, "lang": "en-US", "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R106": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240804047 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "shortName": "Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R107": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240814048 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail", "shortName": "Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id495e2ad217e4818a75e16fd09945147_I20180101", "decimals": "2", "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R108": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ScheduleOfAdditionalInformationOnStockOptionActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240824049 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments - Information about Options (Detail)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail", "shortName": "Stock Options and Other Equity-Based Incentive Instruments - Information about Options (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ScheduleOfAdditionalInformationOnStockOptionActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R109": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i03d16257903a4ce2846f2c3608e851e0_I20181231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unitRef": "shares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240834050 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "shortName": "Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ia66f9e7ff41441948fbf83233d986bb2_D20190101-20191231", "decimals": "INF", "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:AllowanceForCreditLossesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210201005 - Disclosure - Allowance for Loan Losses", "role": "http://tcbk.com/role/AllowanceforLoanLosses", "shortName": "Allowance for Loan Losses", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:AllowanceForCreditLossesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R110": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i63a95db812e2438bb222f1c50d46a5af_D20190101-20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:RestrictedStockExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240844051 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments - Summary of Compensation Costs and Excess Tax Benefits for RSUs (Detail)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail", "shortName": "Stock Options and Other Equity-Based Incentive Instruments - Summary of Compensation Costs and Excess Tax Benefits for RSUs (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i63a95db812e2438bb222f1c50d46a5af_D20190101-20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:RestrictedStockExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R111": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ComponentsOfOtherNoninterestIncomeTableTextBlock", "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240874052 - Disclosure - Noninterest Income and Expense - Components of Other Noninterest Income (Detail)", "role": "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail", "shortName": "Noninterest Income and Expense - Components of Other Noninterest Income (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ComponentsOfOtherNoninterestIncomeTableTextBlock", "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:BrokerageCommissionsRevenue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R112": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:ChangeInFairValueOfMortgageLoanServicingRights", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240884053 - Disclosure - Noninterest Income and Expense - Additional Information (Detail)", "role": "http://tcbk.com/role/NoninterestIncomeandExpenseAdditionalInformationDetail", "shortName": "Noninterest Income and Expense - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:ChangeInFairValueOfMortgageLoanServicingRights", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R113": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ComponentsOfNonInterestExpenseTableTextBlock", "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:BaseSalariesNetOfDeferredLoanOriginationCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240894054 - Disclosure - Noninterest Income and Expense - Components of Noninterest Expense (Detail)", "role": "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail", "shortName": "Noninterest Income and Expense - Components of Noninterest Expense (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ComponentsOfNonInterestExpenseTableTextBlock", "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:BaseSalariesNetOfDeferredLoanOriginationCosts", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R114": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CurrentFederalTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240924055 - Disclosure - Income Taxes - Components of Consolidated Income Tax Expense (Detail)", "role": "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail", "shortName": "Income Taxes - Components of Consolidated Income Tax Expense (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CurrentFederalTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R115": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "reportCount": 1, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240934056 - Disclosure - Income Taxes - Additional Information (Detail)", "role": "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail", "shortName": "Income Taxes - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i1a3347eda0bd4b8fa51d5d2411cfdcd6_D20170101-20171231", "decimals": "-3", "lang": null, "name": "tcbk:TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxesDeferredTaxExpenseBenefit", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R116": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfActivityInAffordableHousingProgramObligationTableTextBlock", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240944057 - Disclosure - Income Taxes - Schedule of Components of Investments in Qualified Affordable Housing Projects (Detail)", "role": "http://tcbk.com/role/IncomeTaxesScheduleofComponentsofInvestmentsinQualifiedAffordableHousingProjectsDetail", "shortName": "Income Taxes - Schedule of Components of Investments in Qualified Affordable Housing Projects (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfActivityInAffordableHousingProgramObligationTableTextBlock", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R117": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "reportCount": 1, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240954058 - Disclosure - Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)", "role": "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail", "shortName": "Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "3", "lang": null, "name": "us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R118": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240964059 - Disclosure - Income Taxes - Company's Net Deferred Tax Asset Recorded in Other Assets (Detail)", "role": "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail", "shortName": "Income Taxes - Company's Net Deferred Tax Asset Recorded in Other Assets (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R119": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i6b4dd6ef024c4fa6bbad884a0faf6ccd_D20191001-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240994060 - Disclosure - Earnings Per Share - Computation of Earnings Per Share (Detail)", "role": "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail", "shortName": "Earnings Per Share - Computation of Earnings Per Share (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:WeightedAverageNumberOfSharesOutstandingBasic", "reportCount": 1, "unique": true, "unitRef": "shares", "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:ForeclosedAssetsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210301006 - Disclosure - Real Estate Owned", "role": "http://tcbk.com/role/RealEstateOwned", "shortName": "Real Estate Owned", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:ForeclosedAssetsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R120": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241024061 - Disclosure - Comprehensive Income - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Detail)", "role": "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "shortName": "Comprehensive Income - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R121": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AociTaxAttributableToParent", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241034062 - Disclosure - Comprehensive Income - Components of Accumulated Other Comprehensive Loss (Detail)", "role": "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "shortName": "Comprehensive Income - Components of Accumulated Other Comprehensive Loss (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "iaa116da9d82b49868d7aa42ccf59766e_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:AociBeforeTaxAttributableToParent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R122": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241064063 - Disclosure - Retirement Plans - Additional Information (Detail)", "role": "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "shortName": "Retirement Plans - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R123": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i49a2602c8fae43d2ab534a6a3a9cd8be_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedContributionPlanCostRecognized", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241074064 - Disclosure - Retirement Plans - Summary of 401(k) Contribution Plan (Detail)", "role": "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail", "shortName": "Retirement Plans - Summary of 401(k) Contribution Plan (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i49a2602c8fae43d2ab534a6a3a9cd8be_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedContributionPlanCostRecognized", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R124": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241084065 - Disclosure - Retirement Plans - Summary of ESOP Activities (Detail)", "role": "http://tcbk.com/role/RetirementPlansSummaryofESOPActivitiesDetail", "shortName": "Retirement Plans - Summary of ESOP Activities (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R125": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:DeferredCompensationArrangementsNonInterestExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241094066 - Disclosure - Retirement Plans - Schedule of Deferred Compensation Earnings Credits Included in Noninterest Expense (Detail)", "role": "http://tcbk.com/role/RetirementPlansScheduleofDeferredCompensationEarningsCreditsIncludedinNoninterestExpenseDetail", "shortName": "Retirement Plans - Schedule of Deferred Compensation Earnings Credits Included in Noninterest Expense (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:DeferredCompensationArrangementsNonInterestExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R126": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241104067 - Disclosure - Retirement Plans - Defined Benefit Pension Plans (Detail)", "role": "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail", "shortName": "Retirement Plans - Defined Benefit Pension Plans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R127": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ScheduleOfAdditionalInformationProvidedWithRespectToDefinedBenefitPlanTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanBenefitObligation", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241114068 - Disclosure - Retirement Plans - Information Pertaining to Activity in Supplemental Retirement Plans (Detail)", "role": "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail", "shortName": "Retirement Plans - Information Pertaining to Activity in Supplemental Retirement Plans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ScheduleOfAdditionalInformationProvidedWithRespectToDefinedBenefitPlanTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:DefinedBenefitPlanActuarialGainLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R128": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCostsOfRetirementPlansTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanServiceCost", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241124069 - Disclosure - Retirement Plans - Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans (Detail)", "role": "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail", "shortName": "Retirement Plans - Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfCostsOfRetirementPlansTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:DefinedBenefitPlanAmortizationOfTransitionAssetObligation", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R129": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "4", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241134070 - Disclosure - Retirement Plans - Assumptions Used in Accounting for Plans (Detail)", "role": "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail", "shortName": "Retirement Plans - Assumptions Used in Accounting for Plans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "4", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210341007 - Disclosure - Premises and Equipment", "role": "http://tcbk.com/role/PremisesandEquipment", "shortName": "Premises and Equipment", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R130": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241144071 - Disclosure - Retirement Plans - Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company (Detail)", "role": "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail", "shortName": "Retirement Plans - Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R131": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i570ee23897074172994414abdc764f4a_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableRelatedParties", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241174072 - Disclosure - Related Party Transactions - Summary of Activity in Lending Transactions (Detail)", "role": "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail", "shortName": "Related Party Transactions - Summary of Activity in Lending Transactions (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i7b9d8e301fe240828c359d86bece2d20_I20171231", "decimals": "-3", "lang": null, "name": "us-gaap:LoansAndLeasesReceivableRelatedParties", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R132": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RelatedPartyDepositLiabilities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241184073 - Disclosure - Related Party Transactions - Additional Information (Detail)", "role": "http://tcbk.com/role/RelatedPartyTransactionsAdditionalInformationDetail", "shortName": "Related Party Transactions - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RelatedPartyDepositLiabilities", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R133": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i2fe6585aba034073a0ba5d3c469bb02b_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241214074 - Disclosure - Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "shortName": "Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i2fe6585aba034073a0ba5d3c469bb02b_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R134": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:EquitySecuritiesFvNiRestricted", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241224075 - Disclosure - Fair Value Measurement - Additional Information (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementAdditionalInformationDetail", "shortName": "Fair Value Measurement - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "lang": null, "name": "tcbk:LoanChargedOffCarryingValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R135": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241234076 - Disclosure - Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs on Recurring Basis (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail", "shortName": "Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs on Recurring Basis (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "iece65e5fdd3d4a5d92fa4acf994acffb_I20161231", "decimals": "-3", "lang": null, "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R136": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4bf652cbd61144b9bf1675f01bca8cff_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241244077 - Disclosure - Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "shortName": "Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsMeasuredOnNonrecurringBasisTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i5cccc1c3ec2041f89935ccf2344090d1_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R137": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ServicingAssetAtFairValueAmount", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241254078 - Disclosure - Fair Value Measurement - Quantitative Information about Recurring Fair Value Measurements (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "shortName": "Fair Value Measurement - Quantitative Information about Recurring Fair Value Measurements (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i187fba157eb34e4c90ee23ba399d684f_I20191231", "decimals": "3", "lang": null, "name": "us-gaap:AlternativeInvestmentMeasurementInput", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R138": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4bf652cbd61144b9bf1675f01bca8cff_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241264079 - Disclosure - Fair Value Measurement - Quantitative Information about Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "shortName": "Fair Value Measurement - Quantitative Information about Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ib015cc1e6ac74cada6c1ae6ebd149a35_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R139": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CashAndDueFromBanks", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241274080 - Disclosure - Fair Value Measurement - Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets (Detail)", "role": "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "shortName": "Fair Value Measurement - Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ibc1a809a95594f2cbc0aea71f43cc410_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210381008 - Disclosure - Cash Value of Life Insurance", "role": "http://tcbk.com/role/CashValueofLifeInsurance", "shortName": "Cash Value of Life Insurance", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R140": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241304081 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Detail)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Detail)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "srt:ScheduleOfCondensedBalanceSheetTableTextBlock", "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i3a7a4f3d98e44659854f66554827addd_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R141": { "firstAnchor": { "ancestors": [ "us-gaap:PreferredStockParOrStatedValuePerShare", "span", "div", "td", "tr", "table", "div", "srt:ScheduleOfCondensedBalanceSheetTableTextBlock", "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:PreferredStockParOrStatedValuePerShare", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241314082 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets, Nonprinting (Detail)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets, Nonprinting (Detail)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "us-gaap:PreferredStockParOrStatedValuePerShare", "span", "div", "td", "tr", "table", "div", "srt:ScheduleOfCondensedBalanceSheetTableTextBlock", "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:PreferredStockParOrStatedValuePerShare", "reportCount": 1, "unique": true, "unitRef": "usdPerShare", "xsiNil": "false" } }, "R142": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i6b4dd6ef024c4fa6bbad884a0faf6ccd_D20191001-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestExpense", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241324083 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Income (Detail)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Income (Detail)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "srt:ScheduleOfCondensedIncomeStatementTableTextBlock", "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i5dc4d732ccd34d08a34485f70a8ea677_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:InterestExpense", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R143": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i6b4dd6ef024c4fa6bbad884a0faf6ccd_D20191001-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241334084 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Comprehensive Income (Detail)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Comprehensive Income (Detail)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfComprehensiveIncomeLossTableTextBlock", "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i5dc4d732ccd34d08a34485f70a8ea677_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R144": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProfitLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241344085 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Cash Flows (Detail)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Cash Flows (Detail)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "srt:ScheduleOfCondensedCashFlowStatementTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i5dc4d732ccd34d08a34485f70a8ea677_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:ProfitLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R145": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i3a7a4f3d98e44659854f66554827addd_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Capital", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241374086 - Disclosure - Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail)", "role": "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail", "shortName": "Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i3a7a4f3d98e44659854f66554827addd_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Capital", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R146": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i6b4dd6ef024c4fa6bbad884a0faf6ccd_D20191001-20191231", "decimals": "-3", "first": true, "lang": null, "name": "srt:StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "241404087 - Disclosure - Summary of Quarterly Results of Operations (Unaudited) - Results of Operations (Detail)", "role": "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail", "shortName": "Summary of Quarterly Results of Operations (Unaudited) - Results of Operations (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i6b4dd6ef024c4fa6bbad884a0faf6ccd_D20191001-20191231", "decimals": "-3", "first": true, "lang": null, "name": "srt:StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210421009 - Disclosure - Goodwill and Other Intangible Assets", "role": "http://tcbk.com/role/GoodwillandOtherIntangibleAssets", "shortName": "Goodwill and Other Intangible Assets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:MortgageServiceRightsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210481010 - Disclosure - Mortgage Servicing Rights", "role": "http://tcbk.com/role/MortgageServicingRights", "shortName": "Mortgage Servicing Rights", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:MortgageServiceRightsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210511011 - Disclosure - Leases", "role": "http://tcbk.com/role/Leases", "shortName": "Leases", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210571012 - Disclosure - Deposits", "role": "http://tcbk.com/role/Deposits", "shortName": "Deposits", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:OtherBorrowingsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210621013 - Disclosure - Other Borrowings", "role": "http://tcbk.com/role/OtherBorrowings", "shortName": "Other Borrowings", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:OtherBorrowingsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CashAndDueFromBanks", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100010002 - Statement - Consolidated Balance Sheets", "role": "http://tcbk.com/role/ConsolidatedBalanceSheets", "shortName": "Consolidated Balance Sheets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:RestrictedInvestments", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:JuniorSubordinatedDebtTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210671014 - Disclosure - Junior Subordinated Debt", "role": "http://tcbk.com/role/JuniorSubordinatedDebt", "shortName": "Junior Subordinated Debt", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:JuniorSubordinatedDebtTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210711015 - Disclosure - Commitments and Contingencies", "role": "http://tcbk.com/role/CommitmentsandContingencies", "shortName": "Commitments and Contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210751016 - Disclosure - Shareholders' Equity", "role": "http://tcbk.com/role/ShareholdersEquity", "shortName": "Shareholders' Equity", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210771017 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstruments", "shortName": "Stock Options and Other Equity-Based Incentive Instruments", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210851018 - Disclosure - Noninterest Income and Expense", "role": "http://tcbk.com/role/NoninterestIncomeandExpense", "shortName": "Noninterest Income and Expense", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210901019 - Disclosure - Income Taxes", "role": "http://tcbk.com/role/IncomeTaxes", "shortName": "Income Taxes", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210971020 - Disclosure - Earnings Per Share", "role": "http://tcbk.com/role/EarningsPerShare", "shortName": "Earnings Per Share", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211001021 - Disclosure - Comprehensive Income", "role": "http://tcbk.com/role/ComprehensiveIncome", "shortName": "Comprehensive Income", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211041022 - Disclosure - Retirement Plans", "role": "http://tcbk.com/role/RetirementPlans", "shortName": "Retirement Plans", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211151023 - Disclosure - Related Party Transactions", "role": "http://tcbk.com/role/RelatedPartyTransactions", "shortName": "Related Party Transactions", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestAndFeeIncomeLoansAndLeases", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100020003 - Statement - Consolidated Statements of Income", "role": "http://tcbk.com/role/ConsolidatedStatementsofIncome", "shortName": "Consolidated Statements of Income", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:InterestIncomeSecuritiesTaxable", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211191024 - Disclosure - Fair Value Measurement", "role": "http://tcbk.com/role/FairValueMeasurement", "shortName": "Fair Value Measurement", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211281025 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnly", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211351026 - Disclosure - Regulatory Matters", "role": "http://tcbk.com/role/RegulatoryMatters", "shortName": "Regulatory Matters", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:QuarterlyFinancialInformationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "211381027 - Disclosure - Summary of Quarterly Results of Operations (unaudited)", "role": "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsunaudited", "shortName": "Summary of Quarterly Results of Operations (unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:QuarterlyFinancialInformationTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "us-gaap:SignificantAccountingPoliciesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:BusinessDescriptionAndBasisOfPresentationPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "220022001 - Disclosure - Summary of Significant Accounting Policies (Policies)", "role": "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies", "shortName": "Summary of Significant Accounting Policies (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "us-gaap:SignificantAccountingPoliciesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:BusinessDescriptionAndBasisOfPresentationPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "us-gaap:BusinessCombinationDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230053001 - Disclosure - Business Combinations (Tables)", "role": "http://tcbk.com/role/BusinessCombinationsTables", "shortName": "Business Combinations (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:BusinessCombinationDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230113002 - Disclosure - Investment Securities (Tables)", "role": "http://tcbk.com/role/InvestmentSecuritiesTables", "shortName": "Investment Securities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230173003 - Disclosure - Loans (Tables)", "role": "http://tcbk.com/role/LoansTables", "shortName": "Loans (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "us-gaap:AllowanceForCreditLossesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230213004 - Disclosure - Allowance for Loan Losses (Tables)", "role": "http://tcbk.com/role/AllowanceforLoanLossesTables", "shortName": "Allowance for Loan Losses (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:AllowanceForCreditLossesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "tcbk:ForeclosedAssetsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230313005 - Disclosure - Real Estate Owned (Tables)", "role": "http://tcbk.com/role/RealEstateOwnedTables", "shortName": "Real Estate Owned (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "tcbk:ForeclosedAssetsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i6b4dd6ef024c4fa6bbad884a0faf6ccd_D20191001-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100030004 - Statement - Consolidated Statements of Comprehensive Income", "role": "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "shortName": "Consolidated Statements of Comprehensive Income", "subGroupType": "", "uniqueAnchor": null }, "R40": { "firstAnchor": { "ancestors": [ "div", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230353006 - Disclosure - Premises and Equipment (Tables)", "role": "http://tcbk.com/role/PremisesandEquipmentTables", "shortName": "Premises and Equipment (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "div", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PropertyPlantAndEquipmentTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230393007 - Disclosure - Cash Value of Life Insurance (Tables)", "role": "http://tcbk.com/role/CashValueofLifeInsuranceTables", "shortName": "Cash Value of Life Insurance (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230433008 - Disclosure - Goodwill and Other Intangible Assets (Tables)", "role": "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsTables", "shortName": "Goodwill and Other Intangible Assets (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "tcbk:MortgageServiceRightsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfServicingAssetsAtFairValueTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230493009 - Disclosure - Mortgage Servicing Rights (Tables)", "role": "http://tcbk.com/role/MortgageServicingRightsTables", "shortName": "Mortgage Servicing Rights (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "tcbk:MortgageServiceRightsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfServicingAssetsAtFairValueTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LeaseCostTableTextBlock", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230523010 - Disclosure - Leases (Tables)", "role": "http://tcbk.com/role/LeasesTables", "shortName": "Leases (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "lang": "en-US", "name": "tcbk:AssetsAndLiabilitiesLesseeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DepositLiabilitiesTypeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230583011 - Disclosure - Deposits (Tables)", "role": "http://tcbk.com/role/DepositsTables", "shortName": "Deposits (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DepositLiabilitiesTypeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "tcbk:OtherBorrowingsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfOtherBorrowingsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230633012 - Disclosure - Other Borrowings (Tables)", "role": "http://tcbk.com/role/OtherBorrowingsTables", "shortName": "Other Borrowings (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "tcbk:OtherBorrowingsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfOtherBorrowingsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R47": { "firstAnchor": { "ancestors": [ "span", "div", "tcbk:JuniorSubordinatedDebtTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSubordinatedBorrowingTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230683013 - Disclosure - Junior Subordinated Debt (Tables)", "role": "http://tcbk.com/role/JuniorSubordinatedDebtTables", "shortName": "Junior Subordinated Debt (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "tcbk:JuniorSubordinatedDebtTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfSubordinatedBorrowingTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R48": { "firstAnchor": { "ancestors": [ "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230723014 - Disclosure - Commitments and Contingencies (Tables)", "role": "http://tcbk.com/role/CommitmentsandContingenciesTables", "shortName": "Commitments and Contingencies (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R49": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230783015 - Disclosure - Stock Options and Other Equity-Based Incentive Instruments (Tables)", "role": "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsTables", "shortName": "Stock Options and Other Equity-Based Incentive Instruments (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i44b0d131694044aba7eb80f23ba08a77_I20161231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100040005 - Statement - Consolidated Statements of Changes in Shareholders' Equity", "role": "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "shortName": "Consolidated Statements of Changes in Shareholders' Equity", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ife02814707e142e186bcfb04e5d2df99_I20161231", "decimals": "-3", "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R50": { "firstAnchor": { "ancestors": [ "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:ComponentsOfOtherNoninterestIncomeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230863016 - Disclosure - Noninterest Income and Expense (Tables)", "role": "http://tcbk.com/role/NoninterestIncomeandExpenseTables", "shortName": "Noninterest Income and Expense (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:OtherIncomeAndOtherExpenseDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "tcbk:ComponentsOfOtherNoninterestIncomeTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R51": { "firstAnchor": { "ancestors": [ "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230913017 - Disclosure - Income Taxes (Tables)", "role": "http://tcbk.com/role/IncomeTaxesTables", "shortName": "Income Taxes (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:IncomeTaxDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R52": { "firstAnchor": { "ancestors": [ "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "230983018 - Disclosure - Earnings Per Share (Tables)", "role": "http://tcbk.com/role/EarningsPerShareTables", "shortName": "Earnings Per Share (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R53": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231013019 - Disclosure - Comprehensive Income (Tables)", "role": "http://tcbk.com/role/ComprehensiveIncomeTables", "shortName": "Comprehensive Income (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R54": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DefinedContributionPlanDisclosuresTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231053020 - Disclosure - Retirement Plans (Tables)", "role": "http://tcbk.com/role/RetirementPlansTables", "shortName": "Retirement Plans (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DefinedContributionPlanDisclosuresTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R55": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231163021 - Disclosure - Related Party Transactions (Tables)", "role": "http://tcbk.com/role/RelatedPartyTransactionsTables", "shortName": "Related Party Transactions (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R56": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231203022 - Disclosure - Fair Value Measurement (Tables)", "role": "http://tcbk.com/role/FairValueMeasurementTables", "shortName": "Fair Value Measurement (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R57": { "firstAnchor": { "ancestors": [ "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "srt:ScheduleOfCondensedBalanceSheetTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231293023 - Disclosure - TriCo Bancshares Condensed Financial Statements (Parent Only) (Tables)", "role": "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyTables", "shortName": "TriCo Bancshares Condensed Financial Statements (Parent Only) (Tables)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "srt:ScheduleOfCondensedBalanceSheetTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R58": { "firstAnchor": { "ancestors": [ "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231363024 - Disclosure - Regulatory Matters (Tables)", "role": "http://tcbk.com/role/RegulatoryMattersTables", "shortName": "Regulatory Matters (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R59": { "firstAnchor": { "ancestors": [ "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "231393025 - Disclosure - Summary of Quarterly Results of Operations (unaudited) (Tables)", "role": "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsunauditedTables", "shortName": "Summary of Quarterly Results of Operations (unaudited) (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:QuarterlyFinancialInformationTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R6": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProfitLoss", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100050006 - Statement - Consolidated Statements of Cash Flows", "role": "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "shortName": "Consolidated Statements of Cash Flows", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:DepreciationAmortizationAndAccretionNet", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R60": { "firstAnchor": { "ancestors": [ "span", "div", "tcbk:JuniorSubordinatedDebtTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "tcbk:NumberOfSubsidiaryBusinessTrust", "reportCount": 1, "unitRef": "trust", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240034001 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)", "role": "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail", "shortName": "Summary of Significant Accounting Policies - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "tcbk:BusinessDescriptionAndBasisOfPresentationPolicyTextBlock", "us-gaap:SignificantAccountingPoliciesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "lang": null, "name": "tcbk:NumberOfLoanProductionOffices", "reportCount": 1, "unique": true, "unitRef": "office", "xsiNil": "false" } }, "R61": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240064002 - Disclosure - Business Combinations - Additional Information (Detail)", "role": "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "shortName": "Business Combinations - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i548c08e5d18e4ca3adcfe7fe806e00a1_I20180706", "decimals": "-3", "lang": null, "name": "us-gaap:BusinessCombinationAcquiredReceivablesGrossContractualAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R62": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240074003 - Disclosure - Business Combinations - Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill (Detail)", "role": "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "shortName": "Business Combinations - Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "us-gaap:BusinessCombinationDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i5e8f50e5c6c444e4a6ad94588f6b0e36_I20180706", "decimals": "-3", "lang": null, "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R63": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240084004 - Disclosure - Business Combinations - Summary of Estimated Fair Value Adjustments Resulting in Goodwill (Detail)", "role": "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "shortName": "Business Combinations - Summary of Estimated Fair Value Adjustments Resulting in Goodwill (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ScheduleOfAdjustmentsHadOnGoodwillRecordedOnAcquisitionTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i8651b56372ab43d08bc58011482e4dca_D20180706-20180706", "decimals": "-3", "lang": null, "name": "tcbk:BusinessAcquisitionNetAssetsCostBasisTransferredToSubsidiary", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R64": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:BusinessAcquisitionsProFormaNetInterestIncome", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240094005 - Disclosure - Business Combinations - Schedule of Business Acquisition Pro-forma Financial Information (Detail)", "role": "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail", "shortName": "Business Combinations - Schedule of Business Acquisition Pro-forma Financial Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "tcbk:BusinessAcquisitionsProFormaNetInterestIncome", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R65": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240124006 - Disclosure - Investment Securities - Amortized Cost and Estimated Fair Values of Investments Securities (Detail)", "role": "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "shortName": "Investment Securities - Amortized Cost and Estimated Fair Values of Investments Securities (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R66": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240134007 - Disclosure - Investment Securities - Additional Information (Detail)", "role": "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail", "shortName": "Investment Securities - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R67": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240144008 - Disclosure - Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail)", "role": "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail", "shortName": "Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R68": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240154009 - Disclosure - Investment Securities - Gross Unrealized Losses on Investment Securities (Detail)", "role": "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail", "shortName": "Investment Securities - Gross Unrealized Losses on Investment Securities (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R69": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableBeforeFeesGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240184010 - Disclosure - Loans - Summary of Loan Balances (Detail)", "role": "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail", "shortName": "Loans - Summary of Loan Balances (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableBeforeFeesGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210011001 - Disclosure - Summary of Significant Accounting Policies", "role": "http://tcbk.com/role/SummaryofSignificantAccountingPolicies", "shortName": "Summary of Significant Accounting Policies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R70": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ChangeInAccretableYieldTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240194011 - Disclosure - Loans - Change in Accretable Yield for PCI (Detail)", "role": "http://tcbk.com/role/LoansChangeinAccretableYieldforPCIDetail", "shortName": "Loans - Change in Accretable Yield for PCI (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:ChangeInAccretableYieldTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i44b0d131694044aba7eb80f23ba08a77_I20161231", "decimals": "-3", "lang": null, "name": "us-gaap:CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R71": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableAllowance", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240224012 - Disclosure - Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "shortName": "Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock", "us-gaap:AllowanceForCreditLossesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:AllowanceForLoanAndLeaseLossesWriteOffs", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R72": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock", "us-gaap:AllowanceForCreditLossesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240234013 - Disclosure - Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses, Net of Unearned Fees for Periods Indicated (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "shortName": "Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses, Net of Unearned Fees for Periods Indicated (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock", "us-gaap:AllowanceForCreditLossesTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R73": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableGrossCarryingAmount", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240244014 - Disclosure - Allowance for Loan Losses - Schedule Credit Quality Indicators (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "shortName": "Allowance for Loan Losses - Schedule Credit Quality Indicators (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FinancingReceivableCreditQualityIndicatorsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "iee5adfd9b2a54a7e8f6283db67a837e8_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:LoansAndLeasesReceivableGrossCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R74": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableGrossCarryingAmount", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240254015 - Disclosure - Allowance for Loan Losses - Analysis of Past Due and Nonaccrual Loans (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "shortName": "Allowance for Loan Losses - Analysis of Past Due and Nonaccrual Loans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:PastDueFinancingReceivablesTableTextBlock", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i78e0856a879a4c3b81f27667af016a87_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:FinancingReceivableRecordedInvestmentPastDue", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R75": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "tcbk:ScheduleOfNonAccrualLoansTableTextBlock", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240264016 - Disclosure - Allowance for Loan Losses - Schedule of Non Accrual Loans (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "shortName": "Allowance for Loan Losses - Schedule of Non Accrual Loans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "tcbk:ScheduleOfNonAccrualLoansTableTextBlock", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R76": { "firstAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i1d5c862713744b6193ab730d4f7bedd0_D20190101-20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240274017 - Disclosure - Allowance for Loan Losses - Additional Information (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "shortName": "Allowance for Loan Losses - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i1d5c862713744b6193ab730d4f7bedd0_D20190101-20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R77": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ImpairedFinancingReceivableUnpaidPrincipalBalance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240284018 - Disclosure - Allowance for Loan Losses - Impaired Loans (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "shortName": "Allowance for Loan Losses - Impaired Loans (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ImpairedFinancingReceivableUnpaidPrincipalBalance", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R78": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableModificationsNumberOfContracts2", "reportCount": 1, "unique": true, "unitRef": "securityloan", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240294019 - Disclosure - Allowance for Loan Losses - Troubled Debt Restructurings (Detail)", "role": "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "shortName": "Allowance for Loan Losses - Troubled Debt Restructurings (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableModificationsNumberOfContracts2", "reportCount": 1, "unique": true, "unitRef": "securityloan", "xsiNil": "false" } }, "R79": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock", "tcbk:ForeclosedAssetsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ForeclosedAssets", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240324020 - Disclosure - Real Estate Owned - Summary of Activity in Balance of Foreclosed Assets (Detail)", "role": "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail", "shortName": "Real Estate Owned - Summary of Activity in Balance of Foreclosed Assets (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock", "tcbk:ForeclosedAssetsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "tcbk:AdditionsReductionsTransfersFromLoansRelatedToForeclosedAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessCombinationDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210041002 - Disclosure - Business Combinations", "role": "http://tcbk.com/role/BusinessCombinations", "shortName": "Business Combinations", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BusinessCombinationDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R80": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock", "tcbk:ForeclosedAssetsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ForeclosedAssets", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240334021 - Disclosure - Real Estate Owned - Additional Information (Detail)", "role": "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail", "shortName": "Real Estate Owned - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "tcbk:ForeclosedAssetsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ie3bf4fc2d2914170acc2be0370877cba_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:ForeclosedAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R81": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:PropertyPlantAndEquipmentTextBlock", "div", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LandAndLandImprovements", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240364022 - Disclosure - Premises and Equipment - Summary of Premises and Equipment (Detail)", "role": "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail", "shortName": "Premises and Equipment - Summary of Premises and Equipment (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "us-gaap:PropertyPlantAndEquipmentTextBlock", "div", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LandAndLandImprovements", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R82": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DepreciationNonproduction", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240374023 - Disclosure - Premises and Equipment - Additional Information (Detail)", "role": "http://tcbk.com/role/PremisesandEquipmentAdditionalInformationDetail", "shortName": "Premises and Equipment - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DepreciationNonproduction", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R83": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock", "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CashSurrenderValueOfLifeInsurance", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240404024 - Disclosure - Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail)", "role": "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail", "shortName": "Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock", "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:InsuredEventGainLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R84": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock", "us-gaap:LifeInsuranceCorporateOrBankOwnedTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "INF", "first": true, "lang": null, "name": "tcbk:InsuranceCompaniesUsed", "reportCount": 1, "unitRef": "company", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240414025 - Disclosure - Cash Value of Life Insurance - Additional Information (Detail)", "role": "http://tcbk.com/role/CashValueofLifeInsuranceAdditionalInformationDetail", "shortName": "Cash Value of Life Insurance - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": null }, "R85": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfGoodwillTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240444026 - Disclosure - Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail)", "role": "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofGoodwillIntangibleDetail", "shortName": "Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfGoodwillTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:GoodwillAcquiredDuringPeriod", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R86": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:GoodwillImpairmentLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240454027 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Detail)", "role": "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail", "shortName": "Goodwill and Other Intangible Assets - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:GoodwillImpairmentLoss", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R87": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ib74037ad118a4302ad531e9180fb2a11_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedCoreDepositsGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240464028 - Disclosure - Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail)", "role": "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail", "shortName": "Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ib74037ad118a4302ad531e9180fb2a11_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedCoreDepositsGross", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R88": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ibe07b52a74974bb883bba6b237231805_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240474029 - Disclosure - Goodwill and Other Intangible Assets - Remaining Estimated Core Deposit Intangible Amortization (Detail)", "role": "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "shortName": "Goodwill and Other Intangible Assets - Remaining Estimated Core Deposit Intangible Amortization (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "ix:continuation", "div", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "ibe07b52a74974bb883bba6b237231805_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R89": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i62cb08fad6f341bab6c73a4a55edbd6d_I20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ServicingAssetAtFairValueAmount", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240504030 - Disclosure - Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail)", "role": "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail", "shortName": "Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:ScheduleOfServicingAssetsAtFairValueTextBlock", "tcbk:MortgageServiceRightsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "210101003 - Disclosure - Investment Securities", "role": "http://tcbk.com/role/InvestmentSecurities", "shortName": "Investment Securities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InvestmentHoldingsScheduleOfInvestmentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R90": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:LeaseCostTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OperatingLeaseCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240534031 - Disclosure - Components of Lease Expense (Details)", "role": "http://tcbk.com/role/ComponentsofLeaseExpenseDetails", "shortName": "Components of Lease Expense (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:LeaseCostTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OperatingLeaseCost", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R91": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OperatingLeasePayments", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240544032 - Disclosure - Supplemental Cash Flow Information (Details)", "role": "http://tcbk.com/role/SupplementalCashFlowInformationDetails", "shortName": "Supplemental Cash Flow Information (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "id3a9103eb75a4ae48d0b411e9d205bd5_D20190101-20191231", "decimals": "-3", "lang": null, "name": "us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R92": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:AssetsAndLiabilitiesLesseeTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240554033 - Disclosure - Lease Term and Discount Rate (Details)", "role": "http://tcbk.com/role/LeaseTermandDiscountRateDetails", "shortName": "Lease Term and Discount Rate (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "tcbk:AssetsAndLiabilitiesLesseeTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R93": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240564034 - Disclosure - Future Expected Operating Lease Payments (Details)", "role": "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails", "shortName": "Future Expected Operating Lease Payments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R94": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:DepositLiabilitiesTypeTableTextBlock", "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NoninterestBearingDepositLiabilities", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240594035 - Disclosure - Deposits - Summary of Balances of Deposits (Detail)", "role": "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail", "shortName": "Deposits - Summary of Balances of Deposits (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:DepositLiabilitiesTypeTableTextBlock", "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "lang": null, "name": "us-gaap:InterestBearingDomesticDepositDemand", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R95": { "firstAnchor": { "ancestors": [ "span", "div", "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DepositLiabilitiesReclassifiedAsLoansReceivable1", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240604036 - Disclosure - Deposits - Additional Information (Detail)", "role": "http://tcbk.com/role/DepositsAdditionalInformationDetail", "shortName": "Deposits - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DepositLiabilitiesReclassifiedAsLoansReceivable1", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R96": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:TimeDepositMaturitiesTableTextBlock", "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:TimeDepositMaturitiesYearOne", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240614037 - Disclosure - Deposits - Schedule of Maturities of Time Deposits (Detail)", "role": "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail", "shortName": "Deposits - Schedule of Maturities of Time Deposits (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "us-gaap:TimeDepositMaturitiesTableTextBlock", "us-gaap:DepositLiabilitiesDisclosuresTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:TimeDepositMaturitiesYearOne", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } }, "R97": { "firstAnchor": { "ancestors": [ "span", "td", "tr", "table", "div", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OtherBorrowings", "reportCount": 1, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240644038 - Disclosure - Other Borrowings - Summary of Balances of Other Borrowings (Detail)", "role": "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail", "shortName": "Other Borrowings - Summary of Balances of Other Borrowings (Detail)", "subGroupType": "details", "uniqueAnchor": null }, "R98": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "tcbk:SummaryOfOtherBorrowingsTableTextBlock", "tcbk:OtherBorrowingsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "if7cb2c5fad254bcb8c97ea359122f126_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240654039 - Disclosure - Other Borrowings - Summary of Balances of Other Borrowings, Nonprinting (Detail)", "role": "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail", "shortName": "Other Borrowings - Summary of Balances of Other Borrowings, Nonprinting (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "tcbk:SummaryOfOtherBorrowingsTableTextBlock", "tcbk:OtherBorrowingsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "if7cb2c5fad254bcb8c97ea359122f126_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate", "reportCount": 1, "unique": true, "unitRef": "number", "xsiNil": "false" } }, "R99": { "firstAnchor": { "ancestors": [ "span", "div", "tcbk:OtherBorrowingsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "240664040 - Disclosure - Other Borrowings - Additional Information (Detail)", "role": "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail", "shortName": "Other Borrowings - Additional Information (Detail)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "span", "div", "tcbk:OtherBorrowingsTextBlock", "body", "html" ], "baseRef": "tcbk-20191231.htm", "contextRef": "i4fe082a90c084dcfa47d33dba2081f63_I20191231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable", "reportCount": 1, "unique": true, "unitRef": "usd", "xsiNil": "false" } } }, "segmentCount": 110, "tag": { "dei_AmendmentFlag": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.", "label": "Amendment Flag", "terseLabel": "Amendment Flag" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_CityAreaCode": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Area code of city", "label": "City Area Code", "terseLabel": "City Area Code" } } }, "localname": "CityAreaCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_CurrentFiscalYearEndDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "End date of current fiscal year in the format --MM-DD.", "label": "Current Fiscal Year End Date", "terseLabel": "Current Fiscal Year End Date" } } }, "localname": "CurrentFiscalYearEndDate", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "gMonthDayItemType" }, "dei_DocumentAnnualReport": { "auth_ref": [ "r628" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true only for a form used as an annual report.", "label": "Document Annual Report", "terseLabel": "Document Annual Report" } } }, "localname": "DocumentAnnualReport", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_DocumentFiscalPeriodFocus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.", "label": "Document Fiscal Period Focus", "terseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "fiscalPeriodItemType" }, "dei_DocumentFiscalYearFocus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.", "label": "Document Fiscal Year Focus", "terseLabel": "Document Fiscal Year Focus" } } }, "localname": "DocumentFiscalYearFocus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "gYearItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.", "label": "Document Period End Date", "terseLabel": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "dateItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r627" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true only for a form used as a transition report.", "label": "Document Transition Report", "terseLabel": "Document Transition Report" } } }, "localname": "DocumentTransitionReport", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_DocumentType": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.", "label": "Document Type", "terseLabel": "Document Type" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityAddressAddressLine1": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Address Line 1 such as Attn, Building Name, Street Name", "label": "Entity Address, Address Line One", "terseLabel": "Entity Address, Address Line One" } } }, "localname": "EntityAddressAddressLine1", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressCityOrTown": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the City or Town", "label": "Entity Address, City or Town", "terseLabel": "Entity Address, City or Town" } } }, "localname": "EntityAddressCityOrTown", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressPostalZipCode": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Code for the postal or zip code", "label": "Entity Address, Postal Zip Code", "terseLabel": "Entity Address, Postal Zip Code" } } }, "localname": "EntityAddressPostalZipCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressStateOrProvince": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the state or province.", "label": "Entity Address, State or Province", "terseLabel": "Entity Address, State or Province" } } }, "localname": "EntityAddressStateOrProvince", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.", "label": "Entity Central Index Key", "terseLabel": "Entity Central Index Key" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "centralIndexKeyItemType" }, "dei_EntityCommonStockSharesOutstanding": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.", "label": "Entity Common Stock, Shares Outstanding", "terseLabel": "Entity Common Stock, Shares Outstanding" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "sharesItemType" }, "dei_EntityCurrentReportingStatus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Current Reporting Status", "terseLabel": "Entity Current Reporting Status" } } }, "localname": "EntityCurrentReportingStatus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "Indicate if registrant meets the emerging growth company criteria.", "label": "Entity Emerging Growth Company", "terseLabel": "Emerging Growth Company" } } }, "localname": "EntityEmergingGrowthCompany", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_EntityFileNumber": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.", "label": "Entity File Number", "terseLabel": "Entity File Number" } } }, "localname": "EntityFileNumber", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.", "label": "Entity Filer Category", "terseLabel": "Entity Filer Category" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityIncorporationStateCountryCode": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Two-character EDGAR code representing the state or country of incorporation.", "label": "Entity Incorporation, State or Country Code", "terseLabel": "Entity Incorporation, State or Country Code" } } }, "localname": "EntityIncorporationStateCountryCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r631" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).", "label": "Entity Interactive Data Current", "terseLabel": "Entity Interactive Data Current" } } }, "localname": "EntityInteractiveDataCurrent", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_EntityPublicFloat": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.", "label": "Entity Public Float", "terseLabel": "Entity Public Float" } } }, "localname": "EntityPublicFloat", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "monetaryItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.", "label": "Entity Registrant Name", "terseLabel": "Entity Registrant Name" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.", "label": "Entity Shell Company", "terseLabel": "Entity Shell Company" } } }, "localname": "EntityShellCompany", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).", "label": "Entity Small Business", "terseLabel": "Entity Small Business" } } }, "localname": "EntitySmallBusiness", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r630" ], "lang": { "en-US": { "role": { "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.", "label": "Entity Tax Identification Number", "terseLabel": "Entity Tax Identification Number" } } }, "localname": "EntityTaxIdentificationNumber", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "employerIdItemType" }, "dei_EntityVoluntaryFilers": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.", "label": "Entity Voluntary Filers", "terseLabel": "Entity Voluntary Filers" } } }, "localname": "EntityVoluntaryFilers", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_EntityWellKnownSeasonedIssuer": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.", "label": "Entity Well-known Seasoned Issuer", "terseLabel": "Entity Well-known Seasoned Issuer" } } }, "localname": "EntityWellKnownSeasonedIssuer", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "yesNoItemType" }, "dei_LocalPhoneNumber": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Local phone number for entity.", "label": "Local Phone Number", "terseLabel": "Local Phone Number" } } }, "localname": "LocalPhoneNumber", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "normalizedStringItemType" }, "dei_Security12bTitle": { "auth_ref": [ "r624" ], "lang": { "en-US": { "role": { "documentation": "Title of a 12(b) registered security.", "label": "Title of 12(b) Security", "terseLabel": "Title of 12(b) Security" } } }, "localname": "Security12bTitle", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "securityTitleItemType" }, "dei_SecurityExchangeName": { "auth_ref": [ "r625" ], "lang": { "en-US": { "role": { "documentation": "Name of the Exchange on which a security is registered.", "label": "Security Exchange Name", "terseLabel": "Security Exchange Name" } } }, "localname": "SecurityExchangeName", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "edgarExchangeCodeItemType" }, "dei_TradingSymbol": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Trading symbol of an instrument as listed on an exchange.", "label": "Trading Symbol", "terseLabel": "Trading Symbol" } } }, "localname": "TradingSymbol", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://tcbk.com/role/CoverPage" ], "xbrltype": "tradingSymbolItemType" }, "invest_InvestmentGeographicRegionAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investment Geographic Region [Axis]", "terseLabel": "Investment Geographic Region [Axis]" } } }, "localname": "InvestmentGeographicRegionAxis", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "invest_InvestmentGeographicRegionDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investment Geographic Region [Domain]", "terseLabel": "Investment Geographic Region [Domain]" } } }, "localname": "InvestmentGeographicRegionDomain", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "invest_InvestmentsScheduleAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investments Schedule [Abstract]", "terseLabel": "Investments Schedule [Abstract]" } } }, "localname": "InvestmentsScheduleAbstract", "nsuri": "http://xbrl.sec.gov/invest/2013-01-31", "xbrltype": "stringItemType" }, "srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Condensed Financial Information Disclosure [Abstract]", "terseLabel": "Condensed Financial Information Disclosure [Abstract]" } } }, "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract", "nsuri": "http://fasb.org/srt/2018-01-31", "xbrltype": "stringItemType" }, "srt_CondensedFinancialStatementsCaptionsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Condensed Financial Statements, Captions [Line Items]", "terseLabel": "Condensed Financial Statements, Captions [Line Items]" } } }, "localname": "CondensedFinancialStatementsCaptionsLineItems", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "stringItemType" }, "srt_ConsolidatedEntitiesAxis": { "auth_ref": [ "r623", "r632" ], "lang": { "en-US": { "role": { "documentation": "Information by consolidated entity or group of entities.", "label": "Consolidated Entities [Axis]", "terseLabel": "Consolidated Entities [Axis]" } } }, "localname": "ConsolidatedEntitiesAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "stringItemType" }, "srt_ConsolidatedEntitiesDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Entity or group of entities consolidated into reporting entity.", "label": "Consolidated Entities [Domain]", "terseLabel": "Consolidated Entities [Domain]" } } }, "localname": "ConsolidatedEntitiesDomain", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "domainItemType" }, "srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis": { "auth_ref": [ "r568" ], "lang": { "en-US": { "role": { "documentation": "Information by branch of Federal Home Loan Bank.", "label": "Federal Home Loan Bank Branch [Axis]", "terseLabel": "Federal Home Loan Bank Branch [Axis]" } } }, "localname": "FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "stringItemType" }, "srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Twelve regional cooperative banks that U.S. lending institutions use to finance housing and economic development in their communities.", "label": "Federal Home Loan Bank Branch [Domain]", "terseLabel": "Federal Home Loan Bank Branch [Domain]" } } }, "localname": "FederalHomeLoanBankAdvancesBranchOfFHLBBankStateDomain", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "domainItemType" }, "srt_FederalHomeLoanBankOfSanFranciscoMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Federal Home Loan Bank (FHLBank) located in San Francisco, California.", "label": "Federal Home Loan Bank of San Francisco [Member]", "terseLabel": "Federal Home Loan Bank of San Francisco" } } }, "localname": "FederalHomeLoanBankOfSanFranciscoMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "domainItemType" }, "srt_MaximumMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Upper limit of the provided range.", "label": "Maximum [Member]", "terseLabel": "Maximum" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Lower limit of the provided range.", "label": "Minimum [Member]", "terseLabel": "Minimum" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "srt_ParentCompanyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The registrant that controls, directly or indirectly, another entity (or entities). The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.", "label": "Parent Company [Member]", "terseLabel": "Parent" } } }, "localname": "ParentCompanyMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "domainItemType" }, "srt_ProductOrServiceAxis": { "auth_ref": [ "r150", "r290", "r291", "r606" ], "lang": { "en-US": { "role": { "documentation": "Information by product and service, or group of similar products and similar services.", "label": "Product and Service [Axis]", "terseLabel": "Product and Service [Axis]" } } }, "localname": "ProductOrServiceAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "stringItemType" }, "srt_ProductsAndServicesDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Product or service, or a group of similar products or similar services.", "label": "Product and Service [Domain]", "terseLabel": "Product and Service [Domain]" } } }, "localname": "ProductsAndServicesDomain", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by range, including, but not limited to, upper and lower bounds.", "label": "Range [Axis]", "terseLabel": "Range [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Extent of variation, for example, but not limited to, upper and lower bounds.", "label": "Range [Domain]", "terseLabel": "Range [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "srt_ScheduleOfCondensedBalanceSheetTableTextBlock": { "auth_ref": [ "r634" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations.", "label": "Condensed Balance Sheet [Table Text Block]", "terseLabel": "Condensed Balance Sheets" } } }, "localname": "ScheduleOfCondensedBalanceSheetTableTextBlock", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyTables" ], "xbrltype": "textBlockItemType" }, "srt_ScheduleOfCondensedCashFlowStatementTableTextBlock": { "auth_ref": [ "r634" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations.", "label": "Condensed Cash Flow Statement [Table Text Block]", "terseLabel": "Condensed Statements of Cash Flows" } } }, "localname": "ScheduleOfCondensedCashFlowStatementTableTextBlock", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyTables" ], "xbrltype": "textBlockItemType" }, "srt_ScheduleOfCondensedFinancialStatementsTable": { "auth_ref": [ "r115", "r420", "r633", "r635", "r636", "r637" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about condensed financial statements, including, but not limited to, the balance sheet, income statement, and statement of cash flows.", "label": "Condensed Financial Statements [Table]", "terseLabel": "Condensed Financial Statements [Table]" } } }, "localname": "ScheduleOfCondensedFinancialStatementsTable", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "stringItemType" }, "srt_ScheduleOfCondensedIncomeStatementTableTextBlock": { "auth_ref": [ "r634" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of condensed income statement, including, but not limited to, income statements of consolidated entities and consolidation eliminations.", "label": "Condensed Income Statement [Table Text Block]", "terseLabel": "Condensed Statements of Income" } } }, "localname": "ScheduleOfCondensedIncomeStatementTableTextBlock", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyTables" ], "xbrltype": "textBlockItemType" }, "srt_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount": { "auth_ref": [ "r508", "r511", "r514", "r626" ], "calculation": { "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail": { "order": 1.0, "parentTag": "us-gaap_InterestAndFeeIncomeLoansAndLeases", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accretion of discount for the standardized measure of discounted future net cash flow related to proved oil and gas reserves.", "label": "Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves, Accretion of Discount", "terseLabel": "Discount accretion" } } }, "localname": "StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "srt_SubsidiariesMember": { "auth_ref": [ "r321", "r481", "r483" ], "lang": { "en-US": { "role": { "documentation": "Entity owned or controlled by another entity.", "label": "Subsidiaries [Member]", "terseLabel": "Tri Counties Bank" } } }, "localname": "SubsidiariesMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "domainItemType" }, "srt_WeightedAverageMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Average of a range of values, calculated with consideration of proportional relevance.", "label": "Weighted Average [Member]", "terseLabel": "Weighted Average" } } }, "localname": "WeightedAverageMember", "nsuri": "http://fasb.org/srt/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail" ], "xbrltype": "domainItemType" }, "stpr_CA": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "CALIFORNIA", "terseLabel": "California" } } }, "localname": "CA", "nsuri": "http://xbrl.sec.gov/stpr/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail", "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_AccountingStandardsUpdate201613Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-13", "label": "Accounting Standards Update 2016-13 [Member]", "terseLabel": "ASU 2016-13" } } }, "localname": "AccountingStandardsUpdate201613Member", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_AccountingStandardsUpdate201802Member": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2018-02.", "label": "Accounting Standards Update 2018-02 [Member]", "terseLabel": "Adoption ASU 2018-02" } } }, "localname": "AccountingStandardsUpdate201802Member", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_AccumulatedJointBeneficiaryAgreementLiabilityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Accumulated joint beneficiary agreement liability.", "label": "Accumulated Joint Beneficiary Agreement Liability [Member]", "terseLabel": "Joint beneficiary agreement liability, net of tax" } } }, "localname": "AccumulatedJointBeneficiaryAgreementLiabilityMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail" ], "xbrltype": "domainItemType" }, "tcbk_AcquisitionDateLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Acquisition Date [Line Items]", "label": "Acquisition Date [Line Items]", "terseLabel": "Acquisition Date [Line Items]" } } }, "localname": "AcquisitionDateLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "stringItemType" }, "tcbk_AdditionsReductionsTransfersFromLoansRelatedToForeclosedAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Additions (Reductions) transfers from loans related to foreclosed assets.", "label": "Additions Reductions Transfers From Loans Related to Foreclosed Assets", "terseLabel": "Additions/transfers from loans" } } }, "localname": "AdditionsReductionsTransfersFromLoansRelatedToForeclosedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_AdditionsToCoreDepositIntangibles": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Additions to core deposit intangibles.", "label": "Additions To Core Deposit Intangibles", "terseLabel": "Additions to core deposit intangibles" } } }, "localname": "AdditionsToCoreDepositIntangibles", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationMarketPlusServiceRestrictedStockUnitsRequisiteServicePeriodRecognition": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Adjustments to additional paid in capital share based compensation market plus service restricted stock units requisite service period recognition.", "label": "Adjustments To Additional Paid In Capital Share Based Compensation Market Plus Service Restricted Stock Units Requisite Service Period Recognition", "terseLabel": "Market plus service condition RSU vesting" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationMarketPlusServiceRestrictedStockUnitsRequisiteServicePeriodRecognition", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "tcbk_AllOtherLoanInterestIncome": { "auth_ref": [], "calculation": { "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail": { "order": 2.0, "parentTag": "us-gaap_InterestAndFeeIncomeLoansAndLeases", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "All other loan interest income.", "label": "All Other Loan Interest Income", "terseLabel": "All other loan interest income" } } }, "localname": "AllOtherLoanInterestIncome", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_AllowanceForLoanAndLeaseLossesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Allowance For Loan And Lease Losses [Abstract]", "label": "Allowance For Loan And Lease Losses [Abstract]", "terseLabel": "Allowance For Loan And Lease Losses [Abstract]" } } }, "localname": "AllowanceForLoanAndLeaseLossesAbstract", "nsuri": "http://tcbk.com/20191231", "xbrltype": "stringItemType" }, "tcbk_AssetsAndLiabilitiesLesseeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Assets and Liabilities, Lessee", "label": "Assets and Liabilities, Lessee [Table Text Block]", "terseLabel": "Lease Term and Discount Rate" } } }, "localname": "AssetsAndLiabilitiesLesseeTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/LeasesTables" ], "xbrltype": "textBlockItemType" }, "tcbk_AvailableForSaleSecuritiesSoldAtCarryingValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of investment securities sold at a no gain or loss on sale.", "label": "Available For Sale Securities Sold At Carrying Value", "terseLabel": "Investment securities sold" } } }, "localname": "AvailableForSaleSecuritiesSoldAtCarryingValue", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BalanceSheetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Balance Sheet", "label": "Balance Sheet [Abstract]", "terseLabel": "Statement of Financial Position Parenthetical" } } }, "localname": "BalanceSheetAbstract", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "tcbk_BankOfAmericaMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Bank Of America [Member]", "label": "Bank Of America [Member]", "terseLabel": "Bank of America" } } }, "localname": "BankOfAmericaMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_BaseSalariesNetOfDeferredLoanOriginationCosts": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 1.0, "parentTag": "us-gaap_LaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Base salaries net of deferred loan origination costs.", "label": "Base Salaries Net Of Deferred Loan Origination Costs", "terseLabel": "Base salaries, net of deferred loan origination costs" } } }, "localname": "BaseSalariesNetOfDeferredLoanOriginationCosts", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BaselThreeFullyPhasedInMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Basel Three Fully Phased In [Member]", "label": "Basel Three Fully Phased In [Member]", "terseLabel": "Required for Capital Adequacy Purposes" } } }, "localname": "BaselThreeFullyPhasedInMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "domainItemType" }, "tcbk_BusinessAcquisitionNetAssetsCostBasisTransferredToSubsidiary": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business acquisition net assets cost basis transferred to subsidiary.", "label": "Business Acquisition Net Assets Cost Basis Transferred To Subsidiary", "negatedLabel": "Cost basis net assets acquired" } } }, "localname": "BusinessAcquisitionNetAssetsCostBasisTransferredToSubsidiary", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessAcquisitionsProFormaIncomeBeforeTaxes": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Acquisitions Pro Forma Income Before Taxes", "label": "Business Acquisitions Pro Forma Income Before Taxes", "terseLabel": "Income before taxes" } } }, "localname": "BusinessAcquisitionsProFormaIncomeBeforeTaxes", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessAcquisitionsProFormaIncomeTaxExpenseBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Acquisitions Pro Forma Income Tax Expense Benefit", "label": "Business Acquisitions Pro Forma Income Tax Expense Benefit", "terseLabel": "Income taxes" } } }, "localname": "BusinessAcquisitionsProFormaIncomeTaxExpenseBenefit", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessAcquisitionsProFormaNetInterestIncome": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Acquisitions Pro Forma Net Interest Income", "label": "Business Acquisitions Pro Forma Net Interest Income", "terseLabel": "Net interest income" } } }, "localname": "BusinessAcquisitionsProFormaNetInterestIncome", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessAcquisitionsProFormaNoninterestExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business acquisitions pro forma non-interest expense.", "label": "Business Acquisitions Pro Forma Non-interest Expense", "negatedLabel": "Noninterest expense" } } }, "localname": "BusinessAcquisitionsProFormaNoninterestExpense", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessAcquisitionsProFormaNoninterestIncome": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business Acquisitions Pro Forma Noninterest Income", "label": "Business Acquisitions Pro Forma Noninterest Income", "terseLabel": "Noninterest income" } } }, "localname": "BusinessAcquisitionsProFormaNoninterestIncome", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessAcquisitionsProFormaProvisionForBenefitFromLoanLosses": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Acquisitions Pro Forma Provision For (Benefit From) Loan Losses", "label": "Business Acquisitions Pro Forma Provision For (Benefit From) Loan Losses", "negatedLabel": "(Provision for) benefit from loan losses" } } }, "localname": "BusinessAcquisitionsProFormaProvisionForBenefitFromLoanLosses", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAdjustmentIncreaseDecreaseInvestments": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Adjustment Increase (Decrease), Investments", "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Adjustment Increase (Decrease), Investments", "terseLabel": "Investments" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAdjustmentIncreaseDecreaseInvestments", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashValueOfLifeInsurance": { "auth_ref": [], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 6.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash Value Of Life Insurance", "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash Value Of Life Insurance", "terseLabel": "Acquired policies from business combination", "verboseLabel": "Cash value of life insurance" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashValueOfLifeInsurance", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits": { "auth_ref": [], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 1.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Business combination recognized identifiable assets acquired and liabilities assumed deposits.", "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposits", "negatedLabel": "Deposits" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivable": { "auth_ref": [], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 4.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business combination recognized identifiable assets acquired and liabilities assumed loans receivable.", "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans Receivable", "terseLabel": "Loans" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOther": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other", "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other", "terseLabel": "Other" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOther", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRestrictedStock": { "auth_ref": [], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 3.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Restricted Stock", "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Restricted Stock", "terseLabel": "Restricted equity securities" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRestrictedStock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_BusinessDescriptionAndBasisOfPresentationPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Business Description And Basis Of Presentation Policy [Text Block]", "label": "Business Description And Basis Of Presentation [Policy Text Block]", "terseLabel": "Description of Business and Basis of Presentation" } } }, "localname": "BusinessDescriptionAndBasisOfPresentationPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_CashAtFederalReserveAndOtherBanks": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_CashAndCashEquivalentsAtCarryingValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Cash at federal reserve and other banks.", "label": "Cash At Federal Reserve And Other Banks", "terseLabel": "Cash at Federal Reserve and other banks" } } }, "localname": "CashAtFederalReserveAndOtherBanks", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CashValueOfLifeInsuranceAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Cash Value of Life Insurance", "label": "Cash Value of Life Insurance [Abstract]" } } }, "localname": "CashValueOfLifeInsuranceAbstract", "nsuri": "http://tcbk.com/20191231", "xbrltype": "stringItemType" }, "tcbk_CertificateOfDepositIncludedInTimeCertificates": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Certificate of deposit included in time certificates.", "label": "Certificate Of Deposit Included In Time Certificates", "terseLabel": "Certificate of deposits, included in time certificates, over $250,000" } } }, "localname": "CertificateOfDepositIncludedInTimeCertificates", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ChangeInAccretableYieldTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Change in accretable yield.", "label": "Change In Accretable Yield [Table Text Block]", "terseLabel": "Change in Accretable Yield for PCI" } } }, "localname": "ChangeInAccretableYieldTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/LoansTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ChangeInFairValueOfMortgageLoanServicingRights": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Change in fair value of mortgage loan servicing rights.", "label": "Change In Fair Value Of Mortgage Loan Servicing Rights", "terseLabel": "Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights" } } }, "localname": "ChangeInFairValueOfMortgageLoanServicingRights", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ChangeInMarketValueOfMortgageServicingRights": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 14.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Change in market value of mortgage servicing rights.", "label": "Change In Market Value Of Mortgage Servicing Rights", "terseLabel": "Change in market value of mortgage servicing rights" } } }, "localname": "ChangeInMarketValueOfMortgageServicingRights", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_ChangeInNetActuarialGainLoss": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Change in net actuarial gain loss.", "label": "Change In Net Actuarial Gain Loss", "terseLabel": "Net actuarial loss" } } }, "localname": "ChangeInNetActuarialGainLoss", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CitizensMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Citizens.", "label": "Citizens [Member]", "terseLabel": "Citizens" } } }, "localname": "CitizensMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_CollateralizedLineOfCreditWithFederalReserveBankMaximumBorrowingCapacity": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Collateralized line of credit with federal reserve bank maximum borrowing capacity.", "label": "Collateralized Line Of Credit With Federal Reserve Bank Maximum Borrowing Capacity", "terseLabel": "Collateralized line of credit with San Francisco Federal Reserve Bank, maximum borrowings capacity" } } }, "localname": "CollateralizedLineOfCreditWithFederalReserveBankMaximumBorrowingCapacity", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CollateralizedLineOfCreditWithFederalReserveBankOutstandingBalance": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Collateralized line of credit with federal reserve bank outstanding balance.", "label": "Collateralized Line Of Credit With Federal Reserve Bank Outstanding Balance", "terseLabel": "Collateralized line of credit with San Francisco Federal Reserve Bank, outstanding balance" } } }, "localname": "CollateralizedLineOfCreditWithFederalReserveBankOutstandingBalance", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CommissionsOnSaleOfNonDepositInvestmentProducts": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 7.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Commissions on sale of non-deposit investment products.", "label": "Commissions On Sale Of Non Deposit Investment Products", "terseLabel": "Commissions on sale of non-deposit investment products" } } }, "localname": "CommissionsOnSaleOfNonDepositInvestmentProducts", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CommitmentsExpirationDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commitments expiration date.", "label": "Commitments Expiration Date", "terseLabel": "Commitment expiration date" } } }, "localname": "CommitmentsExpirationDate", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets", "label": "Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets", "terseLabel": "Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio" } } }, "localname": "CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "tcbk_CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets", "label": "Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets", "terseLabel": "Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio" } } }, "localname": "CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "tcbk_CommonStockConversionRatio": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Common stock conversion ratio.", "label": "Common Stock Conversion Ratio", "terseLabel": "Conversion ratio" } } }, "localname": "CommonStockConversionRatio", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "pureItemType" }, "tcbk_CompanyOwnedLifeInsurancePolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Company Owned Life Insurance Policy Text Block.", "label": "Company Owned Life Insurance [Policy Text Block]", "terseLabel": "Company Owned Life Insurance" } } }, "localname": "CompanyOwnedLifeInsurancePolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_ComponentsOfNonInterestExpenseTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Components of noninterest expense.", "label": "Components Of Non Interest Expense [Table Text Block]", "terseLabel": "Components of Noninterest Expense" } } }, "localname": "ComponentsOfNonInterestExpenseTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ComponentsOfOtherNoninterestIncomeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Components of other noninterest income.", "label": "Components Of Other Noninterest Income [Table Text Block]", "terseLabel": "Components of Other Noninterest Income" } } }, "localname": "ComponentsOfOtherNoninterestIncomeTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ConstructionPortfolioSegmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Construction portfolio segment.", "label": "Construction Portfolio Segment [Member]", "terseLabel": "Construction" } } }, "localname": "ConstructionPortfolioSegmentMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "tcbk_CoreDepositIntangible": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 9.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Core deposit intangible.", "label": "Core Deposit Intangible", "terseLabel": "Other intangible assets, net" } } }, "localname": "CoreDepositIntangible", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "tcbk_CoreDepositIntangiblesAdditions": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Core deposit intangibles additions.", "label": "Core Deposit Intangibles Additions", "terseLabel": "Core deposit intangibles, Additions" } } }, "localname": "CoreDepositIntangiblesAdditions", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CoreDepositIntangiblesReductions": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Core deposit intangibles reductions.", "label": "Core Deposit Intangibles Reductions", "negatedLabel": "Core deposit intangibles, Reductions/Amortization" } } }, "localname": "CoreDepositIntangiblesReductions", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CorporateBondsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Corporate Bonds [Member]", "label": "Corporate Bonds [Member]", "terseLabel": "Corporate bonds" } } }, "localname": "CorporateBondsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "domainItemType" }, "tcbk_CourierService": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 11.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Courier service.", "label": "Courier Service", "terseLabel": "Courier service" } } }, "localname": "CourierService", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_CurrentAndFormerEmployeesAndDirectorsCovered": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Current and former employees and directors covered .", "label": "Current And Former Employees And Directors Covered", "terseLabel": "Current and former employees and directors covered (in employees)" } } }, "localname": "CurrentAndFormerEmployeesAndDirectorsCovered", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "integerItemType" }, "tcbk_CurrentlyExercisableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Currently exercisable.", "label": "Currently Exercisable [Member]", "terseLabel": "Currently Exercisable" } } }, "localname": "CurrentlyExercisableMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "domainItemType" }, "tcbk_CurrentlyNotExercisableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Currently not exercisable.", "label": "Currently Not Exercisable [Member]", "terseLabel": "Currently\u00a0Not Exercisable" } } }, "localname": "CurrentlyNotExercisableMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "domainItemType" }, "tcbk_DebtSecuritiesDividendsAndInterestBearingCashAtBanks": { "auth_ref": [], "calculation": { "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail": { "order": 2.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Debt securities, dividends and interest bearing cash at banks.", "label": "Debt Securities Dividends And Interest Bearing Cash At Banks", "terseLabel": "Debt securities, dividends and interest bearing cash at banks" } } }, "localname": "DebtSecuritiesDividendsAndInterestBearingCashAtBanks", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredCompensationArrangementsNonInterestExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Deferred compensation arrangements non interest expense.", "label": "Deferred Compensation Arrangements Non Interest Expense", "terseLabel": "Deferred compensation earnings credits included in non-interest expense" } } }, "localname": "DeferredCompensationArrangementsNonInterestExpense", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansScheduleofDeferredCompensationEarningsCreditsIncludedinNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxAssetsAcquisitionCostBasis": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 9.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Deferred tax assets acquisition cost basis.", "label": "Deferred Tax Assets Acquisition Cost Basis", "terseLabel": "Acquisition cost basis" } } }, "localname": "DeferredTaxAssetsAcquisitionCostBasis", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxAssetsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Deferred Tax Assets [Member]", "label": "Deferred Tax Assets [Member]", "terseLabel": "Deferred Tax Assets" } } }, "localname": "DeferredTaxAssetsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_DeferredTaxAssetsNonaccrualInterest": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 8.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Deferred tax assets non accrual interest.", "label": "Deferred Tax Assets Nonaccrual Interest", "terseLabel": "Nonaccrual interest" } } }, "localname": "DeferredTaxAssetsNonaccrualInterest", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxAssetsOperatingLeaseLiability": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 14.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Deferred Tax Assets, Operating Lease Liability", "label": "Deferred Tax Assets, Operating Lease Liability", "terseLabel": "Operating lease liability" } } }, "localname": "DeferredTaxAssetsOperatingLeaseLiability", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsAdditionalMinimumPensionLiability": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 5.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Deferred tax assets tax deferred expense compensation and benefits additional minimum pension liability.", "label": "Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Additional Minimum Pension Liability", "terseLabel": "Additional unfunded status of the supplemental retirement plans" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsAdditionalMinimumPensionLiability", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxLiabilitiesJuniorSubordinatedDebt": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 8.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Deferred tax liabilities junior subordinated debt.", "label": "Deferred Tax Liabilities Junior Subordinated Debt", "negatedLabel": "Junior subordinated debt" } } }, "localname": "DeferredTaxLiabilitiesJuniorSubordinatedDebt", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxLiabilitiesMergerRelatedFixedAssetValuations": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 4.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Deferred tax liabilities merger related fixed asset valuations.", "label": "Deferred Tax Liabilities Merger Related Fixed Asset Valuations", "negatedLabel": "Merger related fixed asset valuations" } } }, "localname": "DeferredTaxLiabilitiesMergerRelatedFixedAssetValuations", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxLiabilitiesSecuritiesAccretion": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 6.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Deferred tax liabilities securities accretion.", "label": "Deferred Tax Liabilities Securities Accretion", "negatedLabel": "Securities accretion" } } }, "localname": "DeferredTaxLiabilitiesSecuritiesAccretion", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxLiabilitiesSecuritiesIncome": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 7.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Deferred tax liabilities securities income.", "label": "Deferred Tax Liabilities Securities Income", "negatedLabel": "Securities income" } } }, "localname": "DeferredTaxLiabilitiesSecuritiesIncome", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DeferredTaxLiabilityRightOfUseAsset": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 1.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Deferred Tax Liability, Right-of-Use Asset", "label": "Deferred Tax Liability, Right-of-Use Asset", "negatedLabel": "Right of use asset" } } }, "localname": "DeferredTaxLiabilityRightOfUseAsset", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax": { "auth_ref": [], "calculation": { "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail": { "order": 2.0, "parentTag": "us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax", "label": "Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax", "negatedLabel": "Deferred tax benefit" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeMinimumPensionLiabilityBeforeTax1": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan accumulated other comprehensive income minimum pension liability before tax 1.", "label": "Defined Benefit Plan Accumulated Other Comprehensive Income Minimum Pension Liability Before Tax1", "negatedLabel": "Accumulated other comprehensive income" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeMinimumPensionLiabilityBeforeTax1", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanComponentsOfPensionCostAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Defined benefit plan components of pension cost.", "label": "Defined Benefit Plan Components Of Pension Cost [Abstract]", "terseLabel": "Net pension cost included the following components:" } } }, "localname": "DefinedBenefitPlanComponentsOfPensionCostAbstract", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "stringItemType" }, "tcbk_DefinedBenefitPlanEstimatedFutureEmployerContributionsFiveFiscalYearsThereafter": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan estimated future employer contributions five fiscal years thereafter.", "label": "Defined Benefit Plan Estimated Future Employer Contributions Five Fiscal Years Thereafter", "terseLabel": "Estimated Company Contributions, 2025-2029" } } }, "localname": "DefinedBenefitPlanEstimatedFutureEmployerContributionsFiveFiscalYearsThereafter", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearFive": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan estimated future employer contributions in year five.", "label": "Defined Benefit Plan Estimated Future Employer Contributions In Year Five", "terseLabel": "Estimated Company Contributions, 2024" } } }, "localname": "DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearFive", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearFour": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan estimated future employer contributions in year four.", "label": "Defined Benefit Plan Estimated Future Employer Contributions In Year Four", "terseLabel": "Estimated Company Contributions, 2023" } } }, "localname": "DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearFour", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearThree": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan estimated future employer contributions in year three.", "label": "Defined Benefit Plan Estimated Future Employer Contributions In Year Three", "terseLabel": "Estimated Company Contributions, 2022" } } }, "localname": "DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearThree", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearTwo": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan estimated future employer contributions in year two.", "label": "Defined Benefit Plan Estimated Future Employer Contributions In Year Two", "terseLabel": "Estimated Company Contributions, 2021" } } }, "localname": "DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearTwo", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanNetActuarialGainsLossesNotYetRecognized": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan net actuarial gains losses not yet recognized.", "label": "Defined Benefit Plan Net Actuarial Gains Losses Not Yet Recognized", "negatedLabel": "Unrecognized net actuarial loss" } } }, "localname": "DefinedBenefitPlanNetActuarialGainsLossesNotYetRecognized", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanNetPriorServiceCostsCreditsNotYetRecognized": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan net prior service costs credits not yet recognized.", "label": "Defined Benefit Plan Net Prior Service Costs Credits Not Yet Recognized", "terseLabel": "Unrecognized prior service cost" } } }, "localname": "DefinedBenefitPlanNetPriorServiceCostsCreditsNotYetRecognized", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DefinedBenefitPlanNetTransitionObligationsAssetsNotYetRecognized": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Defined benefit plan net transition obligations assets not yet recognized.", "label": "Defined Benefit Plan Net Transition Obligations Assets Not Yet Recognized", "terseLabel": "Unrecognized net obligation existing at January\u00a01, 1986" } } }, "localname": "DefinedBenefitPlanNetTransitionObligationsAssetsNotYetRecognized", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DepositAccountOverdraftPrivilegeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Deposit account overdraft privilege.", "label": "Deposit Account Overdraft Privilege [Member]", "terseLabel": "Deposit account overdraft privilege" } } }, "localname": "DepositAccountOverdraftPrivilegeMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "domainItemType" }, "tcbk_DirectorsAndOfficersMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Directors And Officers [Member]", "label": "Directors And Officers [Member]", "terseLabel": "Directors and Officers [Member]" } } }, "localname": "DirectorsAndOfficersMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "domainItemType" }, "tcbk_DistributedEarningsOfSubsidiaryToParent": { "auth_ref": [], "calculation": { "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": 2.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Distributed earnings of subsidiary to parent.", "label": "Distributed earnings of subsidiary to parent", "terseLabel": "Distributed" } } }, "localname": "DistributedEarningsOfSubsidiaryToParent", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_DocumentAndEntityInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Document and Entity Information [Abstract]", "label": "Document And Entity Information [Abstract]", "terseLabel": "Document And Entity Information [Abstract]" } } }, "localname": "DocumentAndEntityInformationAbstract", "nsuri": "http://tcbk.com/20191231", "xbrltype": "stringItemType" }, "tcbk_EffectiveIncomeTaxRateReconciliationLowIncomeHousingTaxCreditsAmortization": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 7.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Effective income tax rate reconciliation low income housing tax credits amortization.", "label": "Effective Income Tax Rate Reconciliation Low Income Housing Tax Credits Amortization", "terseLabel": "Low income housing tax credit amortization" } } }, "localname": "EffectiveIncomeTaxRateReconciliationLowIncomeHousingTaxCreditsAmortization", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "tcbk_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerExpenses": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 9.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Effective Income Tax Rate Reconciliation Nondeductible Expense Merger Expenses", "label": "Effective Income Tax Rate Reconciliation Nondeductible Expense Merger Expenses", "terseLabel": "Non-deductible merger expenses" } } }, "localname": "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerExpenses", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "tcbk_EffectiveIncomeTaxRateReconciliationTaxExemptLifeInsuranceRelatedIncome": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 5.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Effective income tax rate reconciliation tax exempt life insurance related income.", "label": "Effective Income Tax Rate Reconciliation Tax Exempt Life Insurance Related Income", "negatedLabel": "Tax-exempt life insurance related income" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxExemptLifeInsuranceRelatedIncome", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "tcbk_EmployeeServicePeriodUnderEsop": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Employee service period under ESOP.", "label": "Employee Service Period Under ESOP", "terseLabel": "Employee service period under ESOP" } } }, "localname": "EmployeeServicePeriodUnderEsop", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "tcbk_EndOfPeriodDeathBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "End of period death benefit.", "label": "End Of Period Death Benefit", "terseLabel": "End of period death benefit" } } }, "localname": "EndOfPeriodDeathBenefit", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_EndingNumberOfForeclosedAssets": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Ending number of foreclosed assets.", "label": "Ending Number Of Foreclosed Assets", "terseLabel": "Ending number of foreclosed assets (in assets)" } } }, "localname": "EndingNumberOfForeclosedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "integerItemType" }, "tcbk_EndingValuationAllowance": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Ending valuation allowance.", "label": "Ending Valuation Allowance", "negatedLabel": "Ending valuation allowance" } } }, "localname": "EndingValuationAllowance", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_EstimatedFairValuesOfFinancialInstrumentsThatAreReportedAtAmortizedCostInConsolidatedBalanceSheetsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Estimated fair values of financial instruments that are reported at amortized cost in consolidated balance sheets.", "label": "Estimated Fair Values Of Financial Instruments That Are Reported At Amortized Cost In Consolidated Balance Sheets [Table Text Block]", "terseLabel": "Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets" } } }, "localname": "EstimatedFairValuesOfFinancialInstrumentsThatAreReportedAtAmortizedCostInConsolidatedBalanceSheetsTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ExcessMortgageServicingRightsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Excess mortgage servicing rights.", "label": "Excess Mortgage Servicing Rights [Member]", "terseLabel": "Change in value of mortgage loan servicing rights" } } }, "localname": "ExcessMortgageServicingRightsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "domainItemType" }, "tcbk_FinancialImpactDueToTroubledDebtRestructureAdditionalProvision": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Financial Impact due to troubled debt restructure additional provision.", "label": "Financial Impact Due To Troubled Debt Restructure Additional Provision", "terseLabel": "Financial impact\u00a0due\u00a0to TDR\u00a0taken\u00a0as additional provision" } } }, "localname": "FinancialImpactDueToTroubledDebtRestructureAdditionalProvision", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_FinancialImpactDueToTroubledDebtRestructureChargeProvision": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Financial Impact due to troubled debt restructure charge (provision)", "label": "Financial Impact Due To Troubled Debt Restructure Charge (Provision)", "terseLabel": "Financial\u00a0impact due to the default of previous TDR taken as charge- offs\u00a0or\u00a0additional provisions" } } }, "localname": "FinancialImpactDueToTroubledDebtRestructureChargeProvision", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_FinancialInstrumentsMeasurementInput": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financial Instruments, Measurement Input", "label": "Financial Instruments, Measurement Input", "terseLabel": "Financial Instruments, Measurement Input" } } }, "localname": "FinancialInstrumentsMeasurementInput", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "percentItemType" }, "tcbk_FiniteLivedIntangibleAssetsAccumulatedAmortizationAddition": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Finite lived intangible assets accumulated amortization addition.", "label": "Finite Lived Intangible Assets Accumulated Amortization Addition", "negatedLabel": "Accumulated amortization, Additions" } } }, "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortizationAddition", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_FiniteLivedIntangibleAssetsAccumulatedAmortizationReductions": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Finite lived intangible assets accumulated amortization reductions.", "label": "Finite Lived Intangible Assets Accumulated Amortization Reductions", "negatedLabel": "Accumulated amortization, Reductions/Amortization" } } }, "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortizationReductions", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_FiniteLivedIntangibleAssetsNetAdditions": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Finite lived intangible assets net additions.", "label": "Finite Lived Intangible Assets Net Additions", "terseLabel": "Core deposit intangibles, net, Additions" } } }, "localname": "FiniteLivedIntangibleAssetsNetAdditions", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_FiniteLivedIntangibleAssetsNetReductions": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Finite lived intangible assets net reductions.", "label": "Finite Lived Intangible Assets Net Reductions", "negatedLabel": "Core deposit intangibles, net, Reductions/Amortization" } } }, "localname": "FiniteLivedIntangibleAssetsNetReductions", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_FnbbMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "FNBB.", "label": "Fnbb [Member]", "terseLabel": "FNBB" } } }, "localname": "FnbbMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_ForeclosedAssetsExpense": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 9.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Foreclosed assets expense.", "label": "Foreclosed Assets Expense", "terseLabel": "Loss on disposal of fixed assets" } } }, "localname": "ForeclosedAssetsExpense", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ForeclosedAssetsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Foreclosed assets.", "label": "Foreclosed Assets [Member]", "terseLabel": "Foreclosed Assets" } } }, "localname": "ForeclosedAssetsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "tcbk_ForeclosedAssetsTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Foreclosed assets.", "label": "Foreclosed Assets [Text Block]", "terseLabel": "Foreclosed Assets" } } }, "localname": "ForeclosedAssetsTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwned" ], "xbrltype": "textBlockItemType" }, "tcbk_FourHundredAndOneKPlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "401 (k) plan.", "label": "Four Hundred And One K Plan [Member]", "terseLabel": "401(k) Plan" } } }, "localname": "FourHundredAndOneKPlanMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail" ], "xbrltype": "domainItemType" }, "tcbk_FurnitureAndEquipment": { "auth_ref": [], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 3.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Furniture and equipment.", "label": "Furniture And Equipment", "terseLabel": "Furniture and equipment" } } }, "localname": "FurnitureAndEquipment", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_GeographicalDescriptionsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Geographical descriptions.", "label": "Geographical Descriptions [Policy Text Block]", "terseLabel": "Geographical Descriptions" } } }, "localname": "GeographicalDescriptionsPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_GoodwillOtherIntangibleAssetsAndLongLivedAssetsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Goodwill Other Intangible Assets And Long Lived Assets Policy Text Block.", "label": "Goodwill Other Intangible Assets And Long Lived Assets Policy Text Block", "terseLabel": "Goodwill, Other Intangible and Long-Lived Assets" } } }, "localname": "GoodwillOtherIntangibleAssetsAndLongLivedAssetsPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_GoodwillOtherReductions": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Goodwill, Other Reductions", "label": "Goodwill, Other Reductions", "negatedLabel": "Goodwill, Other Reductions" } } }, "localname": "GoodwillOtherReductions", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofGoodwillIntangibleDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_GrossRealizedInvestmentGains": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Gross Realized Investment Gains", "label": "Gross Realized Investment Gains", "terseLabel": "Gross realized gains" } } }, "localname": "GrossRealizedInvestmentGains", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ImpairedOriginatedAndPnciLoansMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Impaired originated & PNCI loans.", "label": "Impaired Originated And PNCI Loans [Member]", "terseLabel": "Impaired Originated And PNCI Loans" } } }, "localname": "ImpairedOriginatedAndPnciLoansMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "tcbk_IncentiveCompensationExpense": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 2.0, "parentTag": "us-gaap_LaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Incentive compensation expense.", "label": "Incentive Compensation Expense", "terseLabel": "Incentive compensation" } } }, "localname": "IncentiveCompensationExpense", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_IncomeTaxesTextualAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Income Taxes (Textual) [Abstract]", "label": "Income Taxes Textual [Abstract]", "terseLabel": "Income Taxes (Textual) [Abstract]" } } }, "localname": "IncomeTaxesTextualAbstract", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_InsuranceCompaniesUsed": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Insurance companies used.", "label": "Insurance Companies Used", "terseLabel": "Insurance companies used (in companies)" } } }, "localname": "InsuranceCompaniesUsed", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceAdditionalInformationDetail", "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "integerItemType" }, "tcbk_InsuranceLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Insurance [Line Items]", "label": "Insurance [Line Items]", "terseLabel": "Insurance [Line Items]" } } }, "localname": "InsuranceLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "stringItemType" }, "tcbk_InsuranceProceedsReceivableReclassifiedToOtherAssets": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Insurance proceeds receivable reclassified to other assets.", "label": "Insurance Proceeds Receivable Reclassified To Other Assets", "negatedLabel": "Insurance proceeds receivable reclassified to other assets" } } }, "localname": "InsuranceProceedsReceivableReclassifiedToOtherAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_InsuranceTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Insurance [Table]", "label": "Insurance [Table]", "terseLabel": "Insurance [Table]" } } }, "localname": "InsuranceTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "stringItemType" }, "tcbk_InterestIncomeRecognizedOnNonaccrualLoans": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Interest income recognized on nonaccrual loans.", "label": "Interest Income Recognized on Nonaccrual Loans", "terseLabel": "Interest income on non accrual loans ,recognized" } } }, "localname": "InterestIncomeRecognizedOnNonaccrualLoans", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_InvestmentInLowIncomeHousingTaxCreditFunds": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Investment in low income housing tax credit funds.", "label": "Investment In Low Income Housing Tax Credit Funds", "terseLabel": "Carrying value of low income housing tax credit funds" } } }, "localname": "InvestmentInLowIncomeHousingTaxCreditFunds", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_InvestmentSecuritiesDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFhlb": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Investment securities designated as potential collateral under collateral line of credit with FHLB.", "label": "Investment Securities Designated As Potential Collateral Under Collateral Line Of Credit With FHLB", "terseLabel": "Investment securities designated as potential collateral under collateral line of credit" } } }, "localname": "InvestmentSecuritiesDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFhlb", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_InvestmentSecuritiesDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFrb": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Investment securities designated as potential collateral under collateral line of credit with FRB.", "label": "Investment Securities Designated As Potential Collateral Under Collateral Line Of Credit With FRB", "terseLabel": "Investment securities designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank" } } }, "localname": "InvestmentSecuritiesDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFrb", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_InvestmentSecuritiesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment Securities [Line Items]", "label": "Investment Securities [Line Items]", "terseLabel": "Investment Securities [Line Items]" } } }, "localname": "InvestmentSecuritiesLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_InvestmentSecuritiesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment Securities [Table]", "label": "Investment Securities [Table]", "terseLabel": "Investment Securities [Table]" } } }, "localname": "InvestmentSecuritiesTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_JuniorSubordinatedDebtTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Junior subordinated debt.", "label": "Junior Subordinated Debt [Text Block]", "terseLabel": "Junior Subordinated Debt" } } }, "localname": "JuniorSubordinatedDebtTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebt" ], "xbrltype": "textBlockItemType" }, "tcbk_LesseeOperatingLeaseRightOfUseAssetAmortization": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 21.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Lessee, Operating Lease, Right-of-Use Asset Amortization", "label": "Lessee, Operating Lease, Right-of-Use Asset Amortization", "terseLabel": "Amortization of operating lease ROUA" } } }, "localname": "LesseeOperatingLeaseRightOfUseAssetAmortization", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_LetterOfCreditIssuePeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Letter of credit issue period.", "label": "Letter Of Credit Issue Period", "terseLabel": "Letters of credit, issue period" } } }, "localname": "LetterOfCreditIssuePeriod", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_LiabilitiesAssumedInAcquisition": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Liabilities assumed in acquisition.", "label": "Liabilities Assumed In Acquisition", "terseLabel": "Liabilities assumed in acquisition" } } }, "localname": "LiabilitiesAssumedInAcquisition", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_LifeInsuranceBenefitInExcessOfCashValue": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 18.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Life insurance benefit in excess of cash value.", "label": "Life Insurance Benefit in Excess of Cash Value", "negatedLabel": "Gain on life insurance death benefit" } } }, "localname": "LifeInsuranceBenefitInExcessOfCashValue", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_LifeOfMortgageBackedSecurities": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Life of mortgage backed securities.", "label": "Life Of Mortgage Backed Securities", "terseLabel": "Life of mortgage-backed securities" } } }, "localname": "LifeOfMortgageBackedSecurities", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "tcbk_LoanAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan.", "label": "Loan [Abstract]", "terseLabel": "Loans:" } } }, "localname": "LoanAbstract", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "stringItemType" }, "tcbk_LoanChargedOffCarryingValue": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Loan charged off carrying value.", "label": "Loan Charged Off Carrying Value", "terseLabel": "Carrying value of loans fully charged-off" } } }, "localname": "LoanChargedOffCarryingValue", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_LoansDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFrb": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Loans designated as potential collateral under collateral line of credit with FRB.", "label": "Loans Designated As Potential Collateral Under Collateral Line Of Credit With FRB", "terseLabel": "Loans designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank" } } }, "localname": "LoansDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFrb", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_LoansDesignatedAsPotentialCollateralUnderCollateralizedLineOfCreditWithFhlb": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Loans designated as potential collateral under collateralized line of credit with FHLB.", "label": "Loans Designated As Potential Collateral Under Collateralized Line Of Credit With FHLB", "terseLabel": "Loans designated as potential collateral under collateralized line of credit with FHLB" } } }, "localname": "LoansDesignatedAsPotentialCollateralUnderCollateralizedLineOfCreditWithFhlb", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_LoansHeldForSaleMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loans held for sale [Member]", "label": "Loans Held For Sale [Member]", "terseLabel": "Loans Held For Sale" } } }, "localname": "LoansHeldForSaleMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "tcbk_LoansTransferredToForeclosedAssets": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Loans transferred to foreclosed assets.", "label": "Loans Transferred To Foreclosed Assets", "terseLabel": "Loans transferred to foreclosed assets" } } }, "localname": "LoansTransferredToForeclosedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_LossGainOnSaleOfForeclosedAssets": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Loss (gain) on sale of foreclosed assets.", "label": "Loss Gain On Sale Of Foreclosed Assets", "negatedLabel": "Gain on sale or transfer of loans, to real estate owned" } } }, "localname": "LossGainOnSaleOfForeclosedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_LowIncomeHousingTaxCreditFundCommitments": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Low income housing tax credit fund commitments.", "label": "Low Income Housing Tax Credit Fund Commitments", "terseLabel": "Low income housing tax credit fund commitments" } } }, "localname": "LowIncomeHousingTaxCreditFundCommitments", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_LowIncomeHousingTaxCreditsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Low income housing tax credits.", "label": "Low Income Housing Tax Credits [Policy Text Block]", "terseLabel": "Low Income Housing Tax Credits" } } }, "localname": "LowIncomeHousingTaxCreditsPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_MarketPlusServiceRestrictedStockUnitsReleased": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Market plus service restricted stock units released.", "label": "Market Plus Service Restricted Stock Units Released", "negatedLabel": "Market plus service condition RSUs released" } } }, "localname": "MarketPlusServiceRestrictedStockUnitsReleased", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "tcbk_MarketPlusServiceRestrictedStockUnitsReleasedShares": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Market plus service restricted stock units released shares.", "label": "Market Plus Service Restricted Stock Units Released Shares", "terseLabel": "Market plus service conditions RSUs released, shares" } } }, "localname": "MarketPlusServiceRestrictedStockUnitsReleasedShares", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "sharesItemType" }, "tcbk_MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Market value of shares tendered by employees in lieu of cash to pay for exercise of options and or related taxes.", "label": "Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes", "terseLabel": "Market value of shares repurchased under equity compensation plans", "verboseLabel": "Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes" } } }, "localname": "MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_MarketableDebtSecuritiesPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Marketable debt securities.", "label": "Marketable Debt Securities [Policy Text Block]", "terseLabel": "Debt Securities" } } }, "localname": "MarketableDebtSecuritiesPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_MarketableEquitySecuritiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Marketable Equity Securities [Member]", "label": "Marketable Equity Securities [Member]", "terseLabel": "Marketable equity securities" } } }, "localname": "MarketableEquitySecuritiesMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "tcbk_MarketableEquitySecuritiesPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Marketable equity securities.", "label": "Marketable Equity Securities [Policy Text Block]", "terseLabel": "Marketable Equity Securities" } } }, "localname": "MarketableEquitySecuritiesPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_MinimumAgeForEmployeeParticipation": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Minimum age for employee participation.", "label": "Minimum Age For Employee Participation", "terseLabel": "Minimum age for employees" } } }, "localname": "MinimumAgeForEmployeeParticipation", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "tcbk_MinimumServicePeriodForEmployeesParticipation": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Minimum service period for employees participation.", "label": "Minimum Service Period For Employees Participation", "terseLabel": "Minimum period for employees to participate" } } }, "localname": "MinimumServicePeriodForEmployeesParticipation", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "tcbk_MortgageServiceRightsTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Mortgage service rights", "label": "Mortgage Service Rights [Text Block]", "terseLabel": "Mortgage Servicing Rights" } } }, "localname": "MortgageServiceRightsTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/MortgageServicingRights" ], "xbrltype": "textBlockItemType" }, "tcbk_MortgageServicingRightAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Mortgage Servicing Right", "label": "Mortgage Servicing Right [Abstract]" } } }, "localname": "MortgageServicingRightAbstract", "nsuri": "http://tcbk.com/20191231", "xbrltype": "stringItemType" }, "tcbk_MortgageServicingRightsAmount": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 14.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Mortgage servicing rights, amount", "label": "Mortgage Servicing Rights, Amount", "terseLabel": "Operating leases, right-of-use" } } }, "localname": "MortgageServicingRightsAmount", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "tcbk_MortgageServicingRightsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Mortgage servicing rights.", "label": "Mortgage Servicing Rights [Member]", "terseLabel": "Mortgage servicing rights" } } }, "localname": "MortgageServicingRightsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "tcbk_NetworkCharges": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 2.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Network charges.", "label": "Network Charges", "terseLabel": "ATM and POS network charges" } } }, "localname": "NetworkCharges", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Noninterest Expense, Excluding Labor and Related Expense", "label": "Noninterest Expense, Excluding Labor and Related Expense", "terseLabel": "Other", "totalLabel": "Total other noninterest expense" } } }, "localname": "NoninterestExpenseExcludingLaborAndRelatedExpense", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_NoninterestIncomeExcludingServiceChargesAndFees": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 2.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Noninterest Income, Excluding Service Charges and Fees", "label": "Noninterest Income, Excluding Service Charges and Fees", "totalLabel": "Total other noninterest income" } } }, "localname": "NoninterestIncomeExcludingServiceChargesAndFees", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_NorthValleyBancorpMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "North Valley Bancorp [Member]", "label": "North Valley Bancorp [Member]", "terseLabel": "North Valley Bancorp" } } }, "localname": "NorthValleyBancorpMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_NorthValleyTrustFourMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "North Valley Trust IV.", "label": "North Valley Trust Four [Member]", "terseLabel": "North Valley Trust IV" } } }, "localname": "NorthValleyTrustFourMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "tcbk_NorthValleyTrustThreeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "North Valley Trust III.", "label": "North Valley Trust Three [Member]", "terseLabel": "North Valley Trust III" } } }, "localname": "NorthValleyTrustThreeMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "tcbk_NorthValleyTrustTwoMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "North Valley Trust II.", "label": "North Valley Trust Two [Member]", "terseLabel": "North Valley Trust II" } } }, "localname": "NorthValleyTrustTwoMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "tcbk_NumberOfBranchesAcquired": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of branches acquired.", "label": "Number Of Branches Acquired", "terseLabel": "Number of branches (in branches)" } } }, "localname": "NumberOfBranchesAcquired", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "tcbk_NumberOfCountiesBankOperates": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number Of Counties Bank Operates", "label": "Number Of Counties Bank Operates", "terseLabel": "Number of counties" } } }, "localname": "NumberOfCountiesBankOperates", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "positiveIntegerItemType" }, "tcbk_NumberOfLoanProductionOffices": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number Of Loan Production Offices", "label": "Number Of Loan Production Offices", "terseLabel": "Number of loan production offices" } } }, "localname": "NumberOfLoanProductionOffices", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "tcbk_NumberOfLocationsAcquired": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number Of Locations Acquired", "label": "Number Of Locations Acquired", "terseLabel": "Number of locations acquired" } } }, "localname": "NumberOfLocationsAcquired", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "tcbk_NumberOfLocationsOrganized": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of locations organized.", "label": "Number Of Locations Organized", "terseLabel": "Number of locations organized" } } }, "localname": "NumberOfLocationsOrganized", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "tcbk_NumberOfPoliciesOwned": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of policies owned.", "label": "Number Of Policies Owned", "terseLabel": "Number of policies owned (in policies)" } } }, "localname": "NumberOfPoliciesOwned", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "integerItemType" }, "tcbk_NumberOfSubsidiaryBusinessTrust": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of subsidiary business trust.", "label": "Number Of Subsidiary Business Trust", "terseLabel": "Number of subsidiary business trusts" } } }, "localname": "NumberOfSubsidiaryBusinessTrust", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "tcbk_NumberOfTraditionalBankBranchesAddedUnderAgreement": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number Of Traditional Bank Branches Added Under Agreement", "label": "Number Of Traditional Bank Branches Added Under Agreement", "terseLabel": "Number of branches added (in branches)" } } }, "localname": "NumberOfTraditionalBankBranchesAddedUnderAgreement", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "tcbk_ObligationRelatedToTroubledDebtRestructuring": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Obligation related to troubled debt restructuring.", "label": "Obligation Related To Troubled Debt Restructuring", "terseLabel": "Obligation Related To Troubled Debt Restructuring" } } }, "localname": "ObligationRelatedToTroubledDebtRestructuring", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ObligationsIncurredLeasedAssets": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Obligations Incurred, Leased Assets", "label": "Obligations Incurred, Leased Assets", "terseLabel": "Obligations incurred in conjunction with leased assets" } } }, "localname": "ObligationsIncurredLeasedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_OffBalanceSheetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Off balance sheet.", "label": "Off Balance Sheet [Abstract]", "terseLabel": "Off-balance sheet:" } } }, "localname": "OffBalanceSheetAbstract", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "tcbk_OperationalLosses": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 16.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Operational losses.", "label": "Operational Losses", "terseLabel": "Operational losses" } } }, "localname": "OperationalLosses", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OtherBenefitsAndCompensationCosts": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 3.0, "parentTag": "us-gaap_LaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Other Benefits and Compensation Costs", "label": "Other Benefits and Compensation Costs", "terseLabel": "Benefits and other compensation costs" } } }, "localname": "OtherBenefitsAndCompensationCosts", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OtherBorrowingsTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other borrowings.", "label": "Other Borrowings [Text Block]", "terseLabel": "Other Borrowings" } } }, "localname": "OtherBorrowingsTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowings" ], "xbrltype": "textBlockItemType" }, "tcbk_OtherComprehensiveIncomeLossChangesInJointBeneficiaryAgreementLiabilityTax": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 2.0, "parentTag": "tcbk_OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Other comprehensive income loss changes in joint beneficiary agreement liability tax.", "label": "Other Comprehensive Income Loss Changes In Joint Beneficiary Agreement Liability Tax", "negatedLabel": "Tax effect" } } }, "localname": "OtherComprehensiveIncomeLossChangesInJointBeneficiaryAgreementLiabilityTax", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsBeforeReclassificationAndTax": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 1.0, "parentTag": "tcbk_OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Before Reclassification And Tax", "label": "Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Before Reclassification And Tax", "terseLabel": "Change in joint beneficiary agreement liability before reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsBeforeReclassificationAndTax", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsNetOfTax": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome": { "order": 3.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other comprehensive income loss joint beneficiary agreement liability adjustments net of tax.", "label": "Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Net Of Tax", "terseLabel": "Change in joint beneficiary agreement liability", "verboseLabel": "Change in joint beneficiary agreement liablity" } } }, "localname": "OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsNetOfTax", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 3.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other comprehensive income loss joint beneficiary agreement liability adjustments reclassification net of tax.", "label": "Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax", "totalLabel": "Change in unfunded status of the supplemental retirement plans, net of tax" } } }, "localname": "OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OtherConsumerLoansMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Consumer Loans [Member]", "label": "Other Consumer Loans [Member]", "terseLabel": "Other" } } }, "localname": "OtherConsumerLoansMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "tcbk_OtherShareBasedAwardsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other Share-Based Awards", "label": "Other Share-Based Awards [Member]", "terseLabel": "Other share-based awards" } } }, "localname": "OtherShareBasedAwardsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_OtherTimeCertificatesDeposits": { "auth_ref": [], "calculation": { "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail": { "order": 5.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Other time certificates deposits.", "label": "Other Time Certificates Deposits", "terseLabel": "Other time certificates" } } }, "localname": "OtherTimeCertificatesDeposits", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OverUnderDistributedEquityInEarnings": { "auth_ref": [], "calculation": { "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": 3.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Some part of the net income (after tax) of TCB \"distributed\" to TriCo that means \"paid to\" and part of the TCB net income after tax that is not distributed to TriCo.", "label": "Over Under Distributed Equity In Earnings", "negatedLabel": "Undistributed equity in earnings of Tri Counties Bank", "terseLabel": "Undistributed" } } }, "localname": "OverUnderDistributedEquityInEarnings", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_OverdraftPrivilegeCommitmentsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Overdraft privilege commitments.", "label": "Overdraft Privilege Commitments [Member]", "terseLabel": "Overdraft privilege commitments" } } }, "localname": "OverdraftPrivilegeCommitmentsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "tcbk_OverdraftPrivilegeReceivableCriteria": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Overdraft privilege receivable criteria.", "label": "Overdraft Privilege Receivable Criteria", "terseLabel": "Overdraft privilege receivable criteria" } } }, "localname": "OverdraftPrivilegeReceivableCriteria", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_PaymentForLoanAndLeaseOriginationsAndPrincipalCollections": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Payment for loan and lease originations and principal collections.", "label": "Payment For Loan And Lease Originations And Principal Collections", "negatedLabel": "Loan origination and principal collections, net" } } }, "localname": "PaymentForLoanAndLeaseOriginationsAndPrincipalCollections", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_PercentageOfAggregateDepreciationInUnrealizedLosses": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of aggregate depreciation in unrealized losses.", "label": "Percentage Of Aggregate Depreciation In Unrealized Losses", "terseLabel": "Percentage of aggregate depreciation in unrealized losses" } } }, "localname": "PercentageOfAggregateDepreciationInUnrealizedLosses", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "percentItemType" }, "tcbk_PreferredSecuritiesRedeemableInterestRate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Preferred securities redeemable interest rate.", "label": "Preferred Securities Redeemable Interest Rate", "terseLabel": "Coupon\u00a0Rate (Variable) 3\u00a0mo.\u00a0LIBOR\u00a0+" } } }, "localname": "PreferredSecuritiesRedeemableInterestRate", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "percentItemType" }, "tcbk_Premises": { "auth_ref": [], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 2.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Premises.", "label": "Premises", "terseLabel": "Buildings" } } }, "localname": "Premises", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_PropertyPlantAndEquipmentLessDepreciationGross": { "auth_ref": [], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 1.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Property plant and equipment less depreciation gross.", "label": "Property Plant And Equipment Less Depreciation Gross", "totalLabel": "Premises and equipment less depreciation, gross" } } }, "localname": "PropertyPlantAndEquipmentLessDepreciationGross", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ProvisionForBenefitFromLoanLossesExpensed": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Provision for (benefit from) loan losses expensed", "label": "Provision For (Benefit From) Loan Losses Expensed", "terseLabel": "(Benefit from reversal of) provision for loan losses", "verboseLabel": "Provision for (benefit from) loan losses" } } }, "localname": "ProvisionForBenefitFromLoanLossesExpensed", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ProvisionForBenefitFromLossesOnForeclosedAssets": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 12.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Provision for (benefit from) losses on foreclosed assets", "label": "Provision For (Benefit From) Losses On Foreclosed Assets", "verboseLabel": "(Reversal of) provision for losses on real estate owned" } } }, "localname": "ProvisionForBenefitFromLossesOnForeclosedAssets", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_PurchaseCreditImpairedLoansMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Purchase credit impaired loans.", "label": "Purchase Credit Impaired Loans [Member]", "terseLabel": "PCI" } } }, "localname": "PurchaseCreditImpairedLoansMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "tcbk_PurchaseNotCreditImpairedLoansMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Purchase not credit impaired loans.", "label": "Purchase Not Credit Impaired Loans [Member]", "terseLabel": "PNCI" } } }, "localname": "PurchaseNotCreditImpairedLoansMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "tcbk_QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Quantitative information fair value measurements for financial instruments measured at fair value on nonrecurring basis level three.", "label": "Quantitative Information Fair Value Measurements For Financial Instruments Measured At Fair Value On Nonrecurring Basis Level Three [Table Text Block]", "terseLabel": "Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis" } } }, "localname": "QuantitativeInformationFairValueMeasurementsForFinancialInstrumentsMeasuredAtFairValueOnNonrecurringBasisLevelThreeTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/FairValueMeasurementTables" ], "xbrltype": "textBlockItemType" }, "tcbk_RealEstateMortgagePortfolioSegmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Real estate mortgage portfolio segment.", "label": "Real Estate Mortgage Portfolio Segment [Member]", "terseLabel": "Mortgage Loans on Real Estate" } } }, "localname": "RealEstateMortgagePortfolioSegmentMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "tcbk_RecentAccountingPronouncementsNotYetAdoptedPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Recent Accounting Pronouncements Not Yet Adopted Policy [Text Block]", "label": "Recent Accounting Pronouncements Not Yet Adopted Policy [Text Block]", "terseLabel": "Accounting Standards Pending Adoption" } } }, "localname": "RecentAccountingPronouncementsNotYetAdoptedPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_RedemptionPurchaseOfRestrictedEquitySecuritiesNet": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Net redemption of restricted equity securities.", "label": "Redemption Purchase Of Restricted Equity Securities Net", "terseLabel": "Net redemption of restricted equity securities" } } }, "localname": "RedemptionPurchaseOfRestrictedEquitySecuritiesNet", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_RegulatoryAssessmentsAndInsurance": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 13.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Regulatory Assessments And Insurance", "label": "Regulatory Assessments And Insurance", "terseLabel": "Regulatory assessments and insurance" } } }, "localname": "RegulatoryAssessmentsAndInsurance", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_RepossessedAssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Repossessed Assets", "label": "Repossessed Assets [Abstract]" } } }, "localname": "RepossessedAssetsAbstract", "nsuri": "http://tcbk.com/20191231", "xbrltype": "stringItemType" }, "tcbk_ResidentialOneToFourFamilyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Residential One To Four Family [Member]", "label": "Residential One To Four Family [Member]", "terseLabel": "Residential 1-4 family" } } }, "localname": "ResidentialOneToFourFamilyMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "tcbk_RestrictedEquitySecuritiesPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Restricted equity securities.", "label": "Restricted Equity Securities [Policy Text Block]", "terseLabel": "Restricted Equity Securities" } } }, "localname": "RestrictedEquitySecuritiesPolicyTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "tcbk_RestrictedStockUnitsMarketConditionMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Restricted Stock Units Market Condition [Member]", "label": "Restricted Stock Units Market Condition [Member]", "terseLabel": "Market Plus Service Condition Vesting RSUs" } } }, "localname": "RestrictedStockUnitsMarketConditionMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "domainItemType" }, "tcbk_RestrictedStockUnitsReleased": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Restricted stock units released.", "label": "Restricted Stock Units Released", "negatedLabel": "Service condition RSUs released" } } }, "localname": "RestrictedStockUnitsReleased", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "tcbk_RestrictedStockUnitsReleasedShares": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Restricted stock units released shares.", "label": "Restricted Stock Units Released Shares", "terseLabel": "Service condition RSUs released, shares" } } }, "localname": "RestrictedStockUnitsReleasedShares", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "sharesItemType" }, "tcbk_SaleOfCustomerChecks": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 5.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Sale of customer checks.", "label": "Sale Of Customer Checks", "terseLabel": "Sale of customer checks" } } }, "localname": "SaleOfCustomerChecks", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ScheduleOfAdditionalInformationOnStockOptionActivityTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of additional information on stock option activity.", "label": "Schedule Of Additional Information On Stock Option Activity [Table Text Block]", "terseLabel": "Information about Options" } } }, "localname": "ScheduleOfAdditionalInformationOnStockOptionActivityTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ScheduleOfAdditionalInformationProvidedWithRespectToDefinedBenefitPlanTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of additional information provided with respect to defined benefit plan.", "label": "Schedule Of Additional Information Provided With Respect To Defined Benefit Plan [Table Text Block]", "terseLabel": "Information Pertaining to Activity in Supplemental Retirement Plans" } } }, "localname": "ScheduleOfAdditionalInformationProvidedWithRespectToDefinedBenefitPlanTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ScheduleOfAdjustmentsHadOnGoodwillRecordedOnAcquisitionTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Adjustments Had On Goodwill Recorded On Acquisition [Table Text Block]", "label": "Schedule Of Adjustments Had On Goodwill Recorded On Acquisition [Table Text Block]", "terseLabel": "Summary of Estimated Fair Value Adjustments Resulting in Goodwill" } } }, "localname": "ScheduleOfAdjustmentsHadOnGoodwillRecordedOnAcquisitionTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/BusinessCombinationsTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ScheduleOfAssetsBySegmentTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Assets By Segment [Table]", "label": "Schedule Of Assets By Segment [Table]", "terseLabel": "Schedule Of Assets By Segment [Table]" } } }, "localname": "ScheduleOfAssetsBySegmentTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfBorrowingsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Borrowings [Line Items]", "label": "Schedule Of Borrowings [Line Items]", "terseLabel": "Schedule Of Borrowings [Line Items]" } } }, "localname": "ScheduleOfBorrowingsLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfBorrowingsTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Borrowings [Table]", "label": "Schedule Of Borrowings [Table]", "terseLabel": "Schedule Of Borrowings [Table]" } } }, "localname": "ScheduleOfBorrowingsTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfDepositsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Deposits [Line Items]", "label": "Schedule Of Deposits [Line Items]", "terseLabel": "Schedule Of Deposits [Line Items]" } } }, "localname": "ScheduleOfDepositsLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfDepositsTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Deposits [Table]", "label": "Schedule Of Deposits [Table]", "terseLabel": "Schedule Of Deposits [Table]" } } }, "localname": "ScheduleOfDepositsTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfForeclosedAssetsActivityLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of Foreclosed Assets Activity [Line Items]", "label": "Schedule Of Foreclosed Assets Activity [Line Items]", "terseLabel": "Schedule Of Foreclosed Assets Activity [Line Items]" } } }, "localname": "ScheduleOfForeclosedAssetsActivityLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfIncomeTaxExpenseLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Income Tax Expense [Line Items]", "label": "Schedule Of Income Tax Expense [Line Items]", "terseLabel": "Schedule Of Income Tax Expense [Line Items]" } } }, "localname": "ScheduleOfIncomeTaxExpenseLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfIncomeTaxExpenseTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Income Tax Expense [Table]", "label": "Schedule Of Income Tax Expense [Table]", "terseLabel": "Schedule Of Income Tax Expense [Table]" } } }, "localname": "ScheduleOfIncomeTaxExpenseTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfNonAccrualLoansTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Non Accrual Loans [Table Text Block]", "label": "Schedule Of Non Accrual Loans [Table Text Block]", "terseLabel": "Schedule of Non Accrual Loans" } } }, "localname": "ScheduleOfNonAccrualLoansTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTables" ], "xbrltype": "textBlockItemType" }, "tcbk_ScheduleOfOtherNoninterestIncomeAndExpenseLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Other Noninterest Income And Expense [Line Items]", "label": "Schedule Of Other Noninterest Income And Expense [Line Items]", "terseLabel": "Schedule Of Other Noninterest Income And Expense [Line Items]" } } }, "localname": "ScheduleOfOtherNoninterestIncomeAndExpenseLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "stringItemType" }, "tcbk_ScheduleOfOtherNoninterestIncomeAndExpenseTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule Of Other Noninterest Income And Expense [Table]", "label": "Schedule Of Other Noninterest Income And Expense [Table]", "terseLabel": "Schedule Of Other Noninterest Income And Expense [Table]" } } }, "localname": "ScheduleOfOtherNoninterestIncomeAndExpenseTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "stringItemType" }, "tcbk_SecuritiesPledgedAsCollateral": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Securities Pledged as Collateral", "label": "Securities Pledged as Collateral", "terseLabel": "Securities pledged as collateral" } } }, "localname": "SecuritiesPledgedAsCollateral", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_SecuritiesSoldUnderAgreementsToCollateralized": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Securities sold under agreements to collateralized.", "label": "Securities Sold Under Agreements To Collateralized", "terseLabel": "Repurchase investment securities sold and pledged as collateral under securities repurchase agreement" } } }, "localname": "SecuritiesSoldUnderAgreementsToCollateralized", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_ServiceConditionRestrictedStockUnitsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Service Condition Restricted Stock Units [Member]", "label": "Service Condition Restricted Stock Units [Member]", "terseLabel": "Service\u00a0Condition\u00a0Vesting\u00a0RSUs" } } }, "localname": "ServiceConditionRestrictedStockUnitsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "domainItemType" }, "tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCreditedFromDividends": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Credited From Dividends", "label": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Credited From Dividends", "terseLabel": "RSUs added through dividend credits, Number of RSUs" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCreditedFromDividends", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "sharesItemType" }, "tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleaseInPeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Release In Period", "label": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Release In Period", "negatedLabel": "RSUs released through vesting, Number of RSUs", "terseLabel": "Number of units released" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleaseInPeriod", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "sharesItemType" }, "tcbk_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsTenderedByEmployeesAndDirectors": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share based compensation arrangement by share based payment award number of options tendered by employees and directors.", "label": "Share Based Compensation Arrangement by Share Based Payment Award Number of Options Tendered by Employees and Directors", "terseLabel": "Company's common stock in lieu of cash to exercise options to purchase shares (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfOptionsTenderedByEmployeesAndDirectors", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "tcbk_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodOptionPricePerShare": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share based compensation arrangements by share based payment award options exercises in period option price per share.", "label": "Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Option Price Per Share", "terseLabel": "Options exercised, Option Price per Share" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodOptionPricePerShare", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "perShareItemType" }, "tcbk_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShare": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share based compensation arrangements by share based payment award options outstanding option price per share.", "label": "Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share", "periodEndLabel": "Options outstanding, Option Price per Share, ending balance", "periodStartLabel": "Options outstanding, Option Price per Share, beginning balance" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShare", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "perShareItemType" }, "tcbk_SignificantOfAccountingPoliciesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Significant Of Accounting Policies [Line Items]", "label": "Significant Of Accounting Policies [Line Items]", "terseLabel": "Significant Of Accounting Policies [Line Items]" } } }, "localname": "SignificantOfAccountingPoliciesLineItems", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_SignificantOfAccountingPoliciesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Significant Of Accounting Policies [Table]", "label": "Significant Of Accounting Policies [Table]", "terseLabel": "Significant Of Accounting Policies [Table]" } } }, "localname": "SignificantOfAccountingPoliciesTable", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "tcbk_StockRepurchasePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock Repurchase Plan [Member]", "label": "Stock Repurchase Plan [Member]", "terseLabel": "2007 Stock Repurchase Plan" } } }, "localname": "StockRepurchasePlanMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_StockRepurchaseProgramCumulativeNumberOfSharesRepurchased": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock Repurchase Program Cumulative Number Of Shares Repurchased", "label": "Stock Repurchase Program Cumulative Number Of Shares Repurchased", "terseLabel": "Cumulative number of shares repurchased (in shares)" } } }, "localname": "StockRepurchaseProgramCumulativeNumberOfSharesRepurchased", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "tcbk_StockRepurchaseProgramPercentageOfCommonStock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock repurchase program percentage of common stock.", "label": "Stock Repurchase Program Percentage Of Common Stock", "terseLabel": "Stock repurchase plan percentage of common stock" } } }, "localname": "StockRepurchaseProgramPercentageOfCommonStock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "percentItemType" }, "tcbk_StockRepurchasedDuringPeriodFairValueDisclosure": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Stock Repurchased During Period, Fair Value Disclosure", "label": "Stock Repurchased During Period, Fair Value Disclosure", "terseLabel": "Shares repurchased, fair value" } } }, "localname": "StockRepurchasedDuringPeriodFairValueDisclosure", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Summary of activity in allowance for loan losses and ending balance of loans net of unearned fees.", "label": "Summary of Activity in Allowance for Loan Losses and Loans Net of Unearned Fees [Table Text Block]", "terseLabel": "Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated" } } }, "localname": "SummaryOfActivityInAllowanceForLoanLossesAndLoansNetOfUnearnedFeesTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTables" ], "xbrltype": "textBlockItemType" }, "tcbk_SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Summary of the activity in the balance of cash value of life insurance.", "label": "Summary Of Activity In Balance Of Cash Value Of Life Insurance [Table Text Block]", "terseLabel": "Summary of Activity in Balance of Cash Value of Life Insurance" } } }, "localname": "SummaryOfActivityInBalanceOfCashValueOfLifeInsuranceTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceTables" ], "xbrltype": "textBlockItemType" }, "tcbk_SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Summary of the activity in the balance of foreclosed assets.", "label": "Summary Of Activity In Balance Of Foreclosed Assets [Table Text Block]", "terseLabel": "Summary of Activity in Balance of Foreclosed Assets" } } }, "localname": "SummaryOfActivityInBalanceOfForeclosedAssetsTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RealEstateOwnedTables" ], "xbrltype": "textBlockItemType" }, "tcbk_SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Summary of the banks commitments and contingent liabilities.", "label": "Summary Of Banks Commitments And Contingent Liabilities [Table Text Block]", "terseLabel": "Summary of Bank's Commitments and Contingent Liabilities" } } }, "localname": "SummaryOfBanksCommitmentsAndContingentLiabilitiesTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesTables" ], "xbrltype": "textBlockItemType" }, "tcbk_SummaryOfOtherBorrowingsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Summary of other borrowings.", "label": "Summary Of Other Borrowings [Table Text Block]", "terseLabel": "Summary of Balances of Other Borrowings" } } }, "localname": "SummaryOfOtherBorrowingsTableTextBlock", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsTables" ], "xbrltype": "textBlockItemType" }, "tcbk_SupplementalEmployeeRetirementPlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Supplemental employee retirement Plan.", "label": "Supplemental Employee Retirement Plan [Member]", "terseLabel": "Supplemental Retirement Plans" } } }, "localname": "SupplementalEmployeeRetirementPlanMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_TaxBenefitFromReleaseOfRestrictedStockUnits": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Tax benefit from release of restricted stock units.", "label": "Tax Benefit From Release Of Restricted Stock Units", "terseLabel": "Tax benefit from release of service condition RSUs" } } }, "localname": "TaxBenefitFromReleaseOfRestrictedStockUnits", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "tcbk_TaxBenefitFromReleaseOfRestrictedStockUnitsShares": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tax Benefit From Release Of Restricted Stock Units, Shares", "label": "Tax Benefit From Release Of Restricted Stock Units, Shares", "terseLabel": "Tax benefit from release of service condition RSUs, shares" } } }, "localname": "TaxBenefitFromReleaseOfRestrictedStockUnitsShares", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "sharesItemType" }, "tcbk_TaxCutsAndJobsActOf2017AccelerationOfAmortizationExpenseOnLowIncomeHousingTaxCreditInvestmentsDeferredTaxExpenseBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Tax cuts and jobs act of 2017 acceleration of amortization expense on low income housing tax credit investments deferred tax expense benefit.", "label": "Tax Cuts And Jobs Act of 2017 Acceleration of Amortization Expense on Low Income Housing Tax Credit Investments Deferred Tax Expense Benefit", "terseLabel": "Accelerated amortization expense due to change in tax law" } } }, "localname": "TaxCutsAndJobsActOf2017AccelerationOfAmortizationExpenseOnLowIncomeHousingTaxCreditInvestmentsDeferredTaxExpenseBenefit", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxExpense": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 3.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Tax cuts and jobs act of 2017 remeasurement of deferred tax expense.", "label": "Tax Cuts and Jobs Act of 2017 Remeasurement of Deferred Tax Expense", "terseLabel": "Tax Cuts and Jobs Act impact of federal rate change" } } }, "localname": "TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxExpense", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "tcbk_TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxesDeferredTaxExpenseBenefit": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Tax cuts and jobs act of 2017 remeasurement of deferred taxes deferred tax expense benefit.", "label": "Tax Cuts and Jobs Act of 2017 Remeasurement of Deferred Taxes Deferred Tax Expense Benefit", "terseLabel": "Deferred tax expense for change in tax law" } } }, "localname": "TaxCutsAndJobsActOf2017RemeasurementOfDeferredTaxesDeferredTaxExpenseBenefit", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_TdrLoansPaymentPeriodInNonAccrualStatus": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "TDR loans payment period in non accrual status.", "label": "TDR Loans Payment Period In Non Accrual Status", "terseLabel": "TDR loans payment period in nonaccrual status" } } }, "localname": "TdrLoansPaymentPeriodInNonAccrualStatus", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "tcbk_TriCoCapitalTrustIMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "TriCo capital trust I.", "label": "Tri Co Capital Trust I [Member]", "terseLabel": "TriCo Cap Trust I" } } }, "localname": "TriCoCapitalTrustIMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "tcbk_TriCoCapitalTrustTwoMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "TriCo Capital Trust II.", "label": "Tri Co Capital Trust Two [Member]", "terseLabel": "TriCo Cap Trust II" } } }, "localname": "TriCoCapitalTrustTwoMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "tcbk_TwoThousandNinePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Two Thousand Nine Plan [Member]", "label": "Two Thousand Nine Plan [Member]", "terseLabel": "2009 Plan" } } }, "localname": "TwoThousandNinePlanMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_TwoThousandOnePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Two thousand one plan.", "label": "Two Thousand One Plan [Member]", "terseLabel": "2001 Plan" } } }, "localname": "TwoThousandOnePlanMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_UnrealizedGainLossOnSecuritiesAvailableForSale": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Unrealized net loss on securities available for sale.", "label": "Unrealized Gain Loss On Securities Available For Sale", "terseLabel": "Unrealized (loss) gain on securities available for sale" } } }, "localname": "UnrealizedGainLossOnSecuritiesAvailableForSale", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "tcbk_UnredeemedValueOfShares": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Unredeemed value of shares.", "label": "Unredeemed Value Of Shares", "terseLabel": "Value of unredeemed Class A equivalent shares" } } }, "localname": "UnredeemedValueOfShares", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "tcbk_WhollyOwnedSubsidiariesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Wholly Owned Subsidiaries [Member]", "label": "Wholly Owned Subsidiaries [Member]", "terseLabel": "Wholly Owned Subsidiaries" } } }, "localname": "WhollyOwnedSubsidiariesMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "tcbk_ZeroPointZeroFiveFixedRateCollateralizedBorrowingsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "0.05% Fixed rate collateralized borrowings.", "label": "Zero Point Zero Five Fixed Rate Collateralized Borrowings [Member]", "terseLabel": "0.05% Fixed Rate Collateralized Borrowings" } } }, "localname": "ZeroPointZeroFiveFixedRateCollateralizedBorrowingsMember", "nsuri": "http://tcbk.com/20191231", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail" ], "xbrltype": "domainItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accounting Policies [Abstract]", "terseLabel": "Accounting Policies [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccountingStandardsUpdate201601Member": { "auth_ref": [ "r457" ], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-01 Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.", "label": "Accounting Standards Update 2016-01 [Member]", "terseLabel": "Adoption ASU 2016-01" } } }, "localname": "AccountingStandardsUpdate201601Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_AccountingStandardsUpdate201609Member": { "auth_ref": [ "r359", "r360", "r361", "r362", "r363", "r364", "r365", "r366", "r367", "r368" ], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-09 Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.", "label": "Accounting Standards Update 2016-09 [Member]", "terseLabel": "ASU 2016-09" } } }, "localname": "AccountingStandardsUpdate201609Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments": { "auth_ref": [ "r96" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Accretion (Amortization) of Discounts and Premiums, Investments", "negatedLabel": "Amortization of investment securities premium, net" } } }, "localname": "AccretionAmortizationOfDiscountsAndPremiumsInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedInvestmentIncomeReceivable": { "auth_ref": [ "r18", "r519", "r595" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 7.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.", "label": "Accrued Investment Income Receivable", "terseLabel": "Accrued interest receivable" } } }, "localname": "AccruedInvestmentIncomeReceivable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember": { "auth_ref": [ "r43", "r50", "r53", "r317", "r426" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]", "terseLabel": "Unfunded status of the supplemental retirement plans" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": { "auth_ref": [ "r28", "r250" ], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 2.0, "parentTag": "tcbk_PropertyPlantAndEquipmentLessDepreciationGross", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.", "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment", "negatedLabel": "Less: Accumulated depreciation" } } }, "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember": { "auth_ref": [ "r40", "r41", "r42", "r50", "r53" ], "lang": { "en-US": { "role": { "documentation": "Accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), attributable to parent.", "label": "Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]", "terseLabel": "Net unrealized gain (loss) on available for sale securities" } } }, "localname": "AccumulatedNetUnrealizedInvestmentGainLossMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax": { "auth_ref": [ "r44", "r50" ], "calculation": { "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).", "label": "Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax", "totalLabel": "Amount included in accumulated other comprehensive loss, net of tax" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Accumulated Other Comprehensive Income (Loss) [Line Items]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Line Items]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r47", "r49", "r50" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.", "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Accumulated other comprehensive loss, net of tax", "verboseLabel": "Accumulated other comprehensive loss, net" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about components of accumulated other comprehensive income (loss).", "label": "Accumulated Other Comprehensive Income (Loss) [Table]", "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Table]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r46", "r50", "r53", "r426" ], "lang": { "en-US": { "role": { "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.", "label": "AOCI Attributable to Parent [Member]", "terseLabel": "Accumulated Other Comprehensive Income (loss)" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": { "auth_ref": [ "r118" ], "lang": { "en-US": { "role": { "documentation": "Information by new accounting pronouncement.", "label": "Adjustments for New Accounting Pronouncements [Axis]", "terseLabel": "Adjustments for New Accounting Pronouncements [Axis]" } } }, "localname": "AdjustmentsForNewAccountingPronouncementsAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase to additional paid-in capital (APIC) resulting from recognition of equity-based compensation for restricted stock units.", "label": "Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition", "terseLabel": "Service condition RSU vesting" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation for stock options.", "label": "Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition", "terseLabel": "Stock option vesting" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Adjustments to reconcile net income to net cash provided by operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_AdvertisingExpense": { "auth_ref": [ "r374" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 1.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.", "label": "Advertising Expense", "terseLabel": "Advertising" } } }, "localname": "AdvertisingExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount": { "auth_ref": [ "r226" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of affordable housing tax credits and other tax benefits recognized.", "label": "Affordable Housing Tax Credits and Other Tax Benefits, Amount", "negatedLabel": "Tax credits and other tax benefits \u2013 decrease in tax expense" } } }, "localname": "AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesScheduleofComponentsofInvestmentsinQualifiedAffordableHousingProjectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllocatedShareBasedCompensationExpense": { "auth_ref": [ "r337", "r355", "r369" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.", "label": "Allocated Share-based Compensation Expense", "terseLabel": "Total compensation costs for options recognized in expense" } } }, "localname": "AllocatedShareBasedCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForCreditLossesTextBlock": { "auth_ref": [ "r194" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for allowance for credit losses.", "label": "Allowance for Credit Losses [Text Block]", "terseLabel": "Allowance for Loan Losses" } } }, "localname": "AllowanceForCreditLossesTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLosses" ], "xbrltype": "textBlockItemType" }, "us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts": { "auth_ref": [ "r158" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.", "label": "Allowance for Loan and Lease Loss, Recovery of Bad Debts", "terseLabel": "Recoveries" } } }, "localname": "AllowanceForLoanAndLeaseLossRecoveryOfBadDebts", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet": { "auth_ref": [ "r166", "r536" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of other addition (reduction) in allowance reserve for credit loss.", "label": "Allowance for Loan and Lease Losses, Adjustments, Other", "terseLabel": "Provision (benefit)" } } }, "localname": "AllowanceForLoanAndLeaseLossesAdjustmentsNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease": { "auth_ref": [ "r536" ], "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) of allowance reserve for credit loss.", "label": "Allowance for Loan and Lease Losses, Period Increase (Decrease)", "terseLabel": "Increase in allowance for loan and losses" } } }, "localname": "AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs": { "auth_ref": [ "r157", "r536" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.", "label": "Allowance for Loan and Lease Losses, Write-offs", "negatedLabel": "Charge-offs" } } }, "localname": "AllowanceForLoanAndLeaseLossesWriteOffs", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AlternativeInvestmentMeasurementInput": { "auth_ref": [ "r443" ], "lang": { "en-US": { "role": { "documentation": "Value of input used to measure alternative investment.", "label": "Alternative Investment, Measurement Input", "terseLabel": "Constant prepayment rate" } } }, "localname": "AlternativeInvestmentMeasurementInput", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail" ], "xbrltype": "decimalItemType" }, "us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization": { "auth_ref": [ "r227" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense of investment in qualified affordable housing projects.", "label": "Amortization Method Qualified Affordable Housing Project Investments, Amortization", "terseLabel": "Amortization \u2013 increase in tax expense" } } }, "localname": "AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesScheduleofComponentsofInvestmentsinQualifiedAffordableHousingProjectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AmortizationOfIntangibleAssets": { "auth_ref": [ "r95", "r238", "r243" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 15.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Amortization of Intangible Assets", "terseLabel": "Amortization of intangible assets", "verboseLabel": "Intangible amortization" } } }, "localname": "AmortizationOfIntangibleAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": { "auth_ref": [ "r130" ], "lang": { "en-US": { "role": { "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.", "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount", "terseLabel": "Options excluded from diluted earnings per share because the effect of these options was antidilutive (in shares)" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_AociBeforeTaxAttributableToParent": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).", "label": "AOCI before Tax, Attributable to Parent", "terseLabel": "AOCI before Tax, Attributable to Parent" } } }, "localname": "AociBeforeTaxAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AociTaxAttributableToParent": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit) allocated to accumulated other comprehensive income (loss) attributable to parent.", "label": "AOCI Tax, Attributable to Parent", "negatedLabel": "Tax effect", "terseLabel": "Deferred tax asset" } } }, "localname": "AociTaxAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetBackedSecuritiesMember": { "auth_ref": [ "r215", "r305" ], "lang": { "en-US": { "role": { "documentation": "Securities that are primarily serviced by the cash flows of a discrete pool of receivables or other financial assets for example, but not limited to, credit card receivables, car loans, recreational vehicle loans, and mobile home loans.", "label": "Asset-backed Securities [Member]", "terseLabel": "Asset backed securities" } } }, "localname": "AssetBackedSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_Assets": { "auth_ref": [ "r148", "r520", "r590" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Assets [Abstract]", "terseLabel": "Assets", "verboseLabel": "Assets" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueAdjustment": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.", "label": "Assets, Fair Value Adjustment", "terseLabel": "Total Gains (Losses)" } } }, "localname": "AssetsFairValueAdjustment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r439" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Fair Value Disclosure", "terseLabel": "Fair value", "verboseLabel": "Total assets measured at fair value" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis": { "auth_ref": [ "r114" ], "lang": { "en-US": { "role": { "documentation": "Information by securities or other assets sold under repurchase agreements. Repurchase agreements are agreements under which the transferor (repo party) transfers a security to a transferee (repo counterparty or reverse party) in exchange for cash and concurrently agrees to reacquire that security at a future date for an amount equal to the cash exchanged plus a stipulated interest factor.", "label": "Securities or Other Assets Sold under Agreements to Repurchase [Axis]", "terseLabel": "Securities or Other Assets Sold under Agreements to Repurchase [Axis]" } } }, "localname": "AssetsSoldUnderAgreementsToRepurchaseAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsSoldUnderAgreementsToRepurchaseTypeDomain": { "auth_ref": [ "r114" ], "lang": { "en-US": { "role": { "documentation": "This is the type of such assets (for example, US Treasury Obligations, US Government agency obligations and loans, and so forth). This item may be presented as an element in the table that is disclosed when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under repurchase agreements exceed 10 percent of total assets, as of the most recent balance sheet date.", "label": "Assets Sold under Agreements to Repurchase, Type [Domain]", "terseLabel": "Assets Sold under Agreements to Repurchase, Type [Domain]" } } }, "localname": "AssetsSoldUnderAgreementsToRepurchaseTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis": { "auth_ref": [ "r197" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Amortized Cost", "totalLabel": "Totals, Amortized Cost" } } }, "localname": "AvailableForSaleDebtSecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecurities": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesAmortizedCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.", "label": "Available-for-sale Securities", "terseLabel": "Available for sale debt securities", "verboseLabel": "Debt Securities Available for Sale, Estimated Fair Value" } } }, "localname": "AvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r199" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesAmortizedCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.", "label": "Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax", "terseLabel": "Debt Securities Available for Sale, Gross Unrealized Gains" } } }, "localname": "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesAmortizedCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.", "label": "Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax", "negatedLabel": "Debt Securities Available for Sale, Gross Unrealized Losses" } } }, "localname": "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesAmortizedCost": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.", "label": "Available-for-sale Securities, Amortized Cost Basis", "totalLabel": "Debt Securities Available for Sale, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss", "negatedLabel": "Debt Securities Available for Sale, 12 months or more, Unrealized Loss" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r220" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss", "negatedTotalLabel": "Debt Securities Available for Sale, Unrealized Loss" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value", "totalLabel": "Debt Securities Available for Sale, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss", "negatedLabel": "Debt Securities Available for Sale, Less than 12 months, Unrealized Loss" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value", "terseLabel": "Debt Securities Available for Sale, Less than 12 months, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.", "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value", "terseLabel": "Debt Securities Available for Sale, 12 months or more, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": { "auth_ref": [ "r204" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost", "terseLabel": "Due after five years through ten years, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r200", "r204", "r563" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 3.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value", "terseLabel": "Due after five years through ten years, Estimated Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": { "auth_ref": [ "r203" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost", "terseLabel": "Due after one year through five years, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r200", "r203", "r562" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 2.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value", "terseLabel": "Due after one year through five years, Estimated Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": { "auth_ref": [ "r205" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 4.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost", "terseLabel": "Due after ten years, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r200", "r205", "r564" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 4.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value", "terseLabel": "Due after ten years, Estimated Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": { "auth_ref": [ "r202" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amortized cost of investment in debt security measured at fair value with change recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost", "terseLabel": "Due in one year, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r200", "r202", "r561" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 1.0, "parentTag": "us-gaap_AvailableForSaleSecuritiesDebtSecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value", "terseLabel": "Due in one year, Estimated Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtSecurities": { "auth_ref": [ "r195", "r198" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale", "totalLabel": "Totals, Estimated Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1": { "auth_ref": [ "r218" ], "lang": { "en-US": { "role": { "documentation": "Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.", "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions", "terseLabel": "Available for sale securities in unrealized loss position" } } }, "localname": "AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "us-gaap_AwardTypeAxis": { "auth_ref": [ "r338", "r357" ], "lang": { "en-US": { "role": { "documentation": "Information by award type pertaining to equity-based compensation.", "label": "Award Type [Axis]", "terseLabel": "Award Type [Axis]" } } }, "localname": "AwardTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BalanceSheetLocationAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by location on balance sheet (statement of financial position).", "label": "Balance Sheet Location [Axis]", "terseLabel": "Balance Sheet Location [Axis]" } } }, "localname": "BalanceSheetLocationAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BalanceSheetLocationDomain": { "auth_ref": [ "r430", "r433" ], "lang": { "en-US": { "role": { "documentation": "Location in the balance sheet (statement of financial position).", "label": "Balance Sheet Location [Domain]", "terseLabel": "Balance Sheet Location [Domain]" } } }, "localname": "BalanceSheetLocationDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_BankOwnedLifeInsuranceIncome": { "auth_ref": [ "r549" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 3.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 8.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.", "label": "Bank Owned Life Insurance Income", "negatedLabel": "Increase in cash value of life insurance", "terseLabel": "Increase in cash value of life insurance" } } }, "localname": "BankOwnedLifeInsuranceIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail", "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BankingAndThriftAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Banking and Thrift [Abstract]", "terseLabel": "Banking and Thrift [Abstract]" } } }, "localname": "BankingAndThriftAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_BrokerageCommissionsRevenue": { "auth_ref": [ "r515", "r547" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 1.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of commission revenue from buying and selling securities on behalf of customers.", "label": "Brokerage Commissions Revenue", "terseLabel": "Lease brokerage income" } } }, "localname": "BrokerageCommissionsRevenue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BrokersAndDealersAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Brokers and Dealers [Abstract]", "terseLabel": "Brokers and Dealers [Abstract]" } } }, "localname": "BrokersAndDealersAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionAcquireeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identification of the acquiree in a material business combination (or series of individually immaterial business combinations), which may include the name or other type of identification of the acquiree.", "label": "Business Acquisition, Acquiree [Domain]", "terseLabel": "Business Acquisition, Acquiree [Domain]" } } }, "localname": "BusinessAcquisitionAcquireeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_BusinessAcquisitionAxis": { "auth_ref": [ "r407", "r408" ], "lang": { "en-US": { "role": { "documentation": "Information by business combination or series of individually immaterial business combinations.", "label": "Business Acquisition [Axis]", "terseLabel": "Business Acquisition [Axis]" } } }, "localname": "BusinessAcquisitionAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned": { "auth_ref": [ "r417" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.", "label": "Business Acquisition, Equity Interest Issued or Issuable, Value Assigned", "terseLabel": "Amount paid in exchange for the outstanding options" } } }, "localname": "BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued": { "auth_ref": [ "r417" ], "lang": { "en-US": { "role": { "documentation": "Number of shares of equity interests issued or issuable to acquire entity.", "label": "Business Acquisition, Equity Interest Issued or Issuable, Number of Shares", "terseLabel": "Issue of common stock shares" } } }, "localname": "BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_BusinessAcquisitionLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Business Acquisition [Line Items]", "terseLabel": "Business Acquisition [Line Items]" } } }, "localname": "BusinessAcquisitionLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic": { "auth_ref": [ "r405", "r406" ], "lang": { "en-US": { "role": { "documentation": "The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.", "label": "Business Acquisition, Pro Forma Earnings Per Share, Basic", "terseLabel": "Basic earnings per share (in USD per share)" } } }, "localname": "BusinessAcquisitionProFormaEarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted": { "auth_ref": [ "r405", "r406" ], "lang": { "en-US": { "role": { "documentation": "The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.", "label": "Business Acquisition, Pro Forma Earnings Per Share, Diluted", "terseLabel": "Diluted earnings per share (in USD per share)" } } }, "localname": "BusinessAcquisitionProFormaEarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_BusinessAcquisitionProFormaInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Acquisition, Pro Forma Information [Abstract]", "terseLabel": "Summarized proforma income statement data:" } } }, "localname": "BusinessAcquisitionProFormaInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessAcquisitionProFormaInformationTextBlock": { "auth_ref": [ "r405", "r406" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.", "label": "Business Acquisition, Pro Forma Information [Table Text Block]", "terseLabel": "Schedule of Business Acquisition Pro-forma financial Information" } } }, "localname": "BusinessAcquisitionProFormaInformationTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss": { "auth_ref": [ "r405", "r406" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.", "label": "Business Acquisition, Pro Forma Net Income (Loss)", "terseLabel": "Net income" } } }, "localname": "BusinessAcquisitionsProFormaNetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofBusinessAcquisitionProformaFinancialInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationAcquiredReceivablesFairValue": { "auth_ref": [ "r410" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.", "label": "Business Combination, Acquired Receivable, Fair Value", "terseLabel": "Receivables fair value" } } }, "localname": "BusinessCombinationAcquiredReceivablesFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationAcquiredReceivablesGrossContractualAmount": { "auth_ref": [ "r411" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.", "label": "Business Combination, Acquired Receivables, Gross Contractual Amount", "terseLabel": "Receivables gross contractual amount" } } }, "localname": "BusinessCombinationAcquiredReceivablesGrossContractualAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationAcquisitionRelatedCosts": { "auth_ref": [ "r403" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.", "label": "Business Combination, Acquisition Related Costs", "terseLabel": "Acquisition related costs" } } }, "localname": "BusinessCombinationAcquisitionRelatedCosts", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferred1": { "auth_ref": [ "r413", "r414", "r415" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.", "label": "Business Combination, Consideration Transferred", "terseLabel": "Business combination, consideration transferred", "totalLabel": "Total fair value of consideration transferred" } } }, "localname": "BusinessCombinationConsiderationTransferred1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationConsiderationTransferredAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Combination, Consideration Transferred [Abstract]", "terseLabel": "Fair value of consideration transferred:" } } }, "localname": "BusinessCombinationConsiderationTransferredAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessCombinationDisclosureTextBlock": { "auth_ref": [ "r418" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).", "label": "Business Combination Disclosure [Text Block]", "terseLabel": "Business Combinations" } } }, "localname": "BusinessCombinationDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinations" ], "xbrltype": "textBlockItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 1.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of assets acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets", "totalLabel": "Total assets acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]", "terseLabel": "Assets acquired:" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 1.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents", "terseLabel": "Cash and cash equivalents" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 2.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities", "terseLabel": "Securities available for sale" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 3.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities", "terseLabel": "Short-term borrowings\u2014Federal Home Loan Bank" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets": { "auth_ref": [ "r380", "r412" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.", "label": "Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets", "negatedLabel": "Deferred income taxes" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 7.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of intangible assets, excluding goodwill, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill", "terseLabel": "Core deposit intangible" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 2.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities assumed at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities", "totalLabel": "Total liabilities assumed" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]", "terseLabel": "Liabilities assumed:" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "stringItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet": { "auth_ref": [ "r409", "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net", "totalLabel": "Total net assets acquired" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 2.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other", "terseLabel": "Other liabilities" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets": { "auth_ref": [ "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 8.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets", "terseLabel": "Other assets" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment": { "auth_ref": [ "r409", "r412" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 5.0, "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of property, plant, and equipment recognized as of the acquisition date.", "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment", "terseLabel": "Premises and equipment" } } }, "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1": { "auth_ref": [ "r404" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 1.0, "parentTag": "us-gaap_BusinessCombinationConsiderationTransferred1", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.", "label": "Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value", "terseLabel": "Fair value of shares issued", "verboseLabel": "Value of stock consideration paid to FNB Bancorp Shareholders" } } }, "localname": "BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessCombinationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Business Combinations [Abstract]", "terseLabel": "Business Combinations [Abstract]" } } }, "localname": "BusinessCombinationsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_BusinessCombinationsPolicy": { "auth_ref": [ "r106", "r401" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for completed business combinations (purchase method, acquisition method or combination of entities under common control). This accounting policy may include a general discussion of the purchase method or acquisition method of accounting (including for example, the treatment accorded contingent consideration, the identification of assets and liabilities, the purchase price allocation process, how the fair values of acquired assets and liabilities are determined) and the entity's specific application thereof. An entity that acquires another entity in a leveraged buyout transaction generally discloses the accounting policy followed by the acquiring entity in determining the basis used to value its interest in the acquired entity, and the rationale for that accounting policy.", "label": "Business Combinations Policy [Policy Text Block]", "terseLabel": "Business Combinations" } } }, "localname": "BusinessCombinationsPolicy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_Capital": { "auth_ref": [ "r581", "r582", "r616", "r617" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of total capital as defined in the regulations.", "label": "Capital", "terseLabel": "Total Capital (to Risk Weighted Assets), Actual, Amount" } } }, "localname": "Capital", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalRequiredForCapitalAdequacy": { "auth_ref": [ "r572", "r582" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.", "label": "Capital Required for Capital Adequacy", "terseLabel": "Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount" } } }, "localname": "CapitalRequiredForCapitalAdequacy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets": { "auth_ref": [ "r572", "r575", "r582" ], "lang": { "en-US": { "role": { "documentation": "The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.", "label": "Capital Required for Capital Adequacy to Risk Weighted Assets", "verboseLabel": "Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio" } } }, "localname": "CapitalRequiredForCapitalAdequacyToRiskWeightedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_CapitalRequiredToBeWellCapitalized": { "auth_ref": [ "r573" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.", "label": "Capital Required to be Well Capitalized", "terseLabel": "Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount" } } }, "localname": "CapitalRequiredToBeWellCapitalized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": { "auth_ref": [ "r572" ], "lang": { "en-US": { "role": { "documentation": "The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as \"well capitalized\", in the regulatory framework for prompt corrective action.", "label": "Capital Required to be Well Capitalized to Risk Weighted Assets", "terseLabel": "Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio" } } }, "localname": "CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_CapitalToRiskWeightedAssets": { "auth_ref": [ "r572", "r582" ], "lang": { "en-US": { "role": { "documentation": "Total Capital divided by risk weighted assets as defined in the regulations.", "label": "Capital to Risk Weighted Assets", "terseLabel": "Total Capital (to Risk Weighted Assets), Actual, Ratio" } } }, "localname": "CapitalToRiskWeightedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_CarryingReportedAmountFairValueDisclosureMember": { "auth_ref": [ "r455", "r456" ], "lang": { "en-US": { "role": { "documentation": "Measured as reported on the statement of financial position (balance sheet).", "label": "Reported Value Measurement [Member]", "terseLabel": "Carrying Amount" } } }, "localname": "CarryingReportedAmountFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CashAcquiredFromAcquisition": { "auth_ref": [ "r76" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 8.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).", "label": "Cash Acquired from Acquisition", "terseLabel": "Cash acquired in acquisition, net of consideration paid" } } }, "localname": "CashAcquiredFromAcquisition", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValue": { "auth_ref": [ "r1", "r24", "r97" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.", "label": "Cash and Cash Equivalents, at Carrying Value", "terseLabel": "Cash and cash equivalents", "totalLabel": "Cash and cash equivalents" } } }, "localname": "CashAndCashEquivalentsAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsPolicyTextBlock": { "auth_ref": [ "r4", "r99", "r106", "r151" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.", "label": "Cash and Cash Equivalents, Policy [Policy Text Block]", "terseLabel": "Cash and Cash Equivalents" } } }, "localname": "CashAndCashEquivalentsPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CashAndDueFromBanks": { "auth_ref": [ "r518" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_CashAndCashEquivalentsAtCarryingValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.", "label": "Cash and Due from Banks", "terseLabel": "Cash and due from banks" } } }, "localname": "CashAndDueFromBanks", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": { "auth_ref": [ "r89", "r97", "r104" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents", "periodEndLabel": "Cash and cash equivalents at end of year", "periodStartLabel": "Cash and cash equivalents at beginning of year" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect": { "auth_ref": [ "r89", "r458" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect", "totalLabel": "Net change in cash and cash equivalents" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]", "terseLabel": "Supplemental disclosure of noncash activities" } } }, "localname": "CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_CashSurrenderValueOfLifeInsurance": { "auth_ref": [ "r2", "r29" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 13.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.", "label": "Cash Surrender Value of Life Insurance", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "terseLabel": "Cash value of life insurance", "verboseLabel": "Cash values of the insurance policies purchased to fund deferred compensation obligations" } } }, "localname": "CashSurrenderValueOfLifeInsurance", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]", "terseLabel": "Change in accretable yield:" } } }, "localname": "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansChangeinAccretableYieldforPCIDetail" ], "xbrltype": "stringItemType" }, "us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield": { "auth_ref": [ "r188", "r189" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.", "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield", "periodEndLabel": "Balance at end of period", "periodStartLabel": "Balance at beginning of period" } } }, "localname": "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansChangeinAccretableYieldforPCIDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion": { "auth_ref": [ "r188", "r189" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accretion recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality.", "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion", "negatedLabel": "Accretion to interest income" } } }, "localname": "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansChangeinAccretableYieldforPCIDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference": { "auth_ref": [ "r188", "r189" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of reclassification (to) from nonaccretable difference (from) to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.", "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference", "terseLabel": "Reclassification (to) from nonaccretable difference" } } }, "localname": "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansChangeinAccretableYieldforPCIDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ClassOfStockDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.", "label": "Class of Stock [Domain]", "terseLabel": "Class of Stock [Domain]" } } }, "localname": "ClassOfStockDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfStockLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Class of Stock [Line Items]", "terseLabel": "Class of Stock [Line Items]" } } }, "localname": "ClassOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_CollateralAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by category of collateral or no collateral.", "label": "Collateral [Axis]", "terseLabel": "Collateral [Axis]" } } }, "localname": "CollateralAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_CollateralDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Pledge or no pledge of specific property to serve as protection against default.", "label": "Collateral [Domain]", "terseLabel": "Collateral [Domain]" } } }, "localname": "CollateralDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialLoanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A loan, whether secured or unsecured, to a company for purposes such as seasonal working capital needs, inventory financing, equipment purchases and acquisitions.", "label": "Commercial Loan [Member]", "terseLabel": "Commercial" } } }, "localname": "CommercialLoanMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialPortfolioSegmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Portfolio segment of the company's total financing receivables related to commercial receivables.", "label": "Commercial Portfolio Segment [Member]", "terseLabel": "Commercial" } } }, "localname": "CommercialPortfolioSegmentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialRealEstateMember": { "auth_ref": [ "r305" ], "lang": { "en-US": { "role": { "documentation": "Property that is solely used for business purposes.", "label": "Commercial Real Estate [Member]", "terseLabel": "Commercial Real Estate" } } }, "localname": "CommercialRealEstateMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r34", "r256", "r534", "r598" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.", "label": "Commitments and Contingencies", "terseLabel": "Commitments and contingencies", "verboseLabel": "Commitments to extend credit" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Commitments and Contingencies Disclosure [Abstract]", "terseLabel": "Commitments and Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r255", "r264" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for commitments and contingencies.", "label": "Commitments and Contingencies Disclosure [Text Block]", "terseLabel": "Commitments and Contingencies" } } }, "localname": "CommitmentsAndContingenciesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommitmentsAndContingenciesPolicyTextBlock": { "auth_ref": [ "r106", "r270", "r620", "r621" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for commitments and contingencies, which may include policies for recognizing and measuring loss and gain contingencies.", "label": "Commitments and Contingencies, Policy [Policy Text Block]", "terseLabel": "Reserve for Unfunded Commitments" } } }, "localname": "CommitmentsAndContingenciesPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommitmentsMember": { "auth_ref": [ "r12", "r254", "r525", "r588" ], "lang": { "en-US": { "role": { "documentation": "This element represents significant arrangements with third parties, which includes operating lease arrangements and arrangements in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services, and operating lease arrangements.", "label": "Commitments [Member]", "terseLabel": "Commitments" } } }, "localname": "CommitmentsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommonClassAMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Classification of common stock representing ownership interest in a corporation.", "label": "Common Class A [Member]", "terseLabel": "Common Class A" } } }, "localname": "CommonClassAMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommonClassBMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Classification of common stock that has different rights than Common Class A, representing ownership interest in a corporation.", "label": "Common Class B [Member]", "terseLabel": "Common Class B" } } }, "localname": "CommonClassBMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommonEquityTierOneCapital": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of Common Equity Tier One Risk-based Capital, as defined by regulatory framework.", "label": "Common Equity Tier One Capital", "terseLabel": "Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Amount" } } }, "localname": "CommonEquityTierOneCapital", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommonEquityTierOneCapitalRatio": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of Common Equity Tier One Risk-based Capital to total risk-weighted assets, as defined by regulatory framework.", "label": "Common Equity Tier One Capital Ratio", "terseLabel": "Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio" } } }, "localname": "CommonEquityTierOneCapitalRatio", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_CommonEquityTierOneCapitalRequiredForCapitalAdequacy": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as adequately capitalized under regulatory framework for prompt corrective action.", "label": "Common Equity Tier One Capital Required for Capital Adequacy", "terseLabel": "Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount" } } }, "localname": "CommonEquityTierOneCapitalRequiredForCapitalAdequacy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommonEquityTierOneCapitalRequiredToBeWellCapitalized": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as well-capitalized under regulatory framework for prompt corrective action.", "label": "Common Equity Tier One Capital Required to be Well-Capitalized", "terseLabel": "Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount" } } }, "localname": "CommonEquityTierOneCapitalRequiredToBeWellCapitalized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommonStockDividendsPerShareCashPaid": { "auth_ref": [ "r285" ], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends paid during the period for each share of common stock outstanding.", "label": "Common Stock, Dividends, Per Share, Cash Paid", "terseLabel": "Dividends", "verboseLabel": "Dividends paid, per share" } } }, "localname": "CommonStockDividendsPerShareCashPaid", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common Stock" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockNoParValue": { "auth_ref": [ "r17" ], "lang": { "en-US": { "role": { "documentation": "Face amount per share of no-par value common stock.", "label": "Common Stock, No Par Value", "terseLabel": "Common stock, no par value (in dollars per share)", "verboseLabel": "Common stock, par value (in dollars per share)" } } }, "localname": "CommonStockNoParValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r17" ], "lang": { "en-US": { "role": { "documentation": "Face amount or stated value per share of common stock.", "label": "Common Stock, Par or Stated Value Per Share", "terseLabel": "The value of the Class A shares" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r17" ], "lang": { "en-US": { "role": { "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.", "label": "Common Stock, Shares Authorized", "terseLabel": "Common stock, shares authorized (in shares)" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r17" ], "lang": { "en-US": { "role": { "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.", "label": "Common Stock, Shares, Issued", "terseLabel": "Common stock, shares issued (in shares)" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r17", "r278" ], "lang": { "en-US": { "role": { "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.", "label": "Common Stock, Shares, Outstanding", "periodEndLabel": "Ending balance, shares", "periodStartLabel": "Beginning balance, shares", "terseLabel": "Common stock, shares outstanding (in shares)", "verboseLabel": "Common stock, shares outstanding (in shares)" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r17" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Common Stock, Value, Issued", "terseLabel": "Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 30,523,824 and 30,417,223 at December\u00a031, 2019 and 2018, respectively", "verboseLabel": "Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 30,417,223 and 22,955,963 shares at December 31, 2018 and 2017, respectively" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_Communication": { "auth_ref": [ "r70" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 5.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of expense incurred in the period for communication, which is the exchange of information by several methods.", "label": "Communication", "terseLabel": "Telecommunications" } } }, "localname": "Communication", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CompensationAndRetirementDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Retirement Benefits [Abstract]", "terseLabel": "Retirement Benefits [Abstract]" } } }, "localname": "CompensationAndRetirementDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r56", "r58", "r59" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.", "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent", "terseLabel": "Comprehensive income", "totalLabel": "Comprehensive income" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNoteTextBlock": { "auth_ref": [ "r72" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.", "label": "Comprehensive Income (Loss) Note [Text Block]", "terseLabel": "Comprehensive Income" } } }, "localname": "ComprehensiveIncomeNoteTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncome" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConcentrationRiskCreditRisk": { "auth_ref": [ "r140", "r584" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for credit risk.", "label": "Concentration Risk, Credit Risk, Policy [Policy Text Block]", "terseLabel": "Segment and Significant Group Concentration of Credit Risk" } } }, "localname": "ConcentrationRiskCreditRisk", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock": { "auth_ref": [ "r420", "r559" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.", "label": "Condensed Financial Information of Parent Company Only Disclosure [Text Block]", "terseLabel": "TriCo Bancshares Condensed Financial Statements (Parent Only)" } } }, "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnly" ], "xbrltype": "textBlockItemType" }, "us-gaap_ConstructionInProgressGross": { "auth_ref": [ "r249" ], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 2.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.", "label": "Construction in Progress, Gross", "terseLabel": "Construction in progress" } } }, "localname": "ConstructionInProgressGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ConstructionLoansMember": { "auth_ref": [ "r619" ], "lang": { "en-US": { "role": { "documentation": "A borrowing arrangement which provides the entity constructing a facility (such as a building and a landfill) with funds to effect construction, generally on a draw down, or as needed, basis.", "label": "Construction Loans [Member]", "terseLabel": "Real estate construction loans" } } }, "localname": "ConstructionLoansMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ConsumerLoanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan or extension of credit for personal, family, or household use excluding real estate.", "label": "Consumer Loan [Member]", "terseLabel": "Consumer loans" } } }, "localname": "ConsumerLoanMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ConsumerPortfolioSegmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Portfolio segment of the company's total financing receivables related to consumer receivables.", "label": "Consumer Portfolio Segment [Member]", "terseLabel": "Consumer" } } }, "localname": "ConsumerPortfolioSegmentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets": { "auth_ref": [ "r494" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability.", "label": "Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset", "terseLabel": "Contractually specified servicing fees, late fees and ancillary fees earned" } } }, "localname": "ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ConversionOfStockLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Conversion of Stock [Line Items]", "terseLabel": "Conversion of Stock [Line Items]" } } }, "localname": "ConversionOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ConversionOfStockTable": { "auth_ref": [ "r101", "r102", "r103" ], "lang": { "en-US": { "role": { "documentation": "This table may be used to disclose all the information related to converting stock into another financial instrument(s) in a noncash (or part noncash) transaction. It may include a description sufficient information to understand the nature and purpose of the conversion, as well as the financial instruments converted from and to (for example, preferred, common, treasury, etc.) the amounts converted, the new shares issued, and the value of the new shares issued, if applicable. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.", "label": "Conversion of Stock [Table]", "terseLabel": "Conversion of Stock [Table]" } } }, "localname": "ConversionOfStockTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_CoreDepositsMember": { "auth_ref": [ "r569" ], "lang": { "en-US": { "role": { "documentation": "Entity's long-term relationships with depositors, commonly known as core deposit intangibles, which are separate from the financial instruments themselves.", "label": "Core Deposits [Member]", "terseLabel": "Core Deposit Intangibles" } } }, "localname": "CoreDepositsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CreditAndDebitCardMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Card issued to user to facilitate payment for purchase of product and service paid directly to merchant by issuer, or from user's checking account.", "label": "Credit and Debit Card [Member]", "terseLabel": "ATM and interchange fees" } } }, "localname": "CreditAndDebitCardMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CreditLossStatusAxis": { "auth_ref": [ "r191" ], "lang": { "en-US": { "role": { "documentation": "Information by credit loss status of financial asset.", "label": "Credit Loss Status [Axis]", "terseLabel": "Credit Loss Status [Axis]" } } }, "localname": "CreditLossStatusAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_CreditLossStatusDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Credit loss status of financial asset.", "label": "Credit Loss Status [Domain]", "terseLabel": "Credit Loss Status [Domain]" } } }, "localname": "CreditLossStatusDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_CumulativeEffectOnRetainedEarningsNetOfTax1": { "auth_ref": [ "r122" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of the cumulative effect on retained earnings net of related income tax effect.", "label": "Cumulative Effect on Retained Earnings, Net of Tax", "terseLabel": "Adoption of ASU" } } }, "localname": "CumulativeEffectOnRetainedEarningsNetOfTax1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentFederalTaxExpenseBenefit": { "auth_ref": [ "r108", "r393", "r397" ], "calculation": { "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": 1.0, "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current Federal Tax Expense (Benefit)", "terseLabel": "Federal" } } }, "localname": "CurrentFederalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentIncomeTaxExpenseBenefit": { "auth_ref": [ "r108", "r393", "r397" ], "calculation": { "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": 1.0, "parentTag": "us-gaap_IncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.", "label": "Current Income Tax Expense (Benefit)", "totalLabel": "Current tax expense, Total" } } }, "localname": "CurrentIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Current Income Tax Expense (Benefit), Continuing Operations [Abstract]", "terseLabel": "Current tax expense" } } }, "localname": "CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "stringItemType" }, "us-gaap_CurrentStateAndLocalTaxExpenseBenefit": { "auth_ref": [ "r108", "r393", "r397" ], "calculation": { "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": 2.0, "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current State and Local Tax Expense (Benefit)", "terseLabel": "State" } } }, "localname": "CurrentStateAndLocalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Debt Disclosure [Abstract]", "terseLabel": "Debt Disclosure [Abstract]" } } }, "localname": "DebtDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentAxis": { "auth_ref": [ "r8", "r9", "r10", "r521", "r524", "r587" ], "lang": { "en-US": { "role": { "documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities.", "label": "Debt Instrument [Axis]", "terseLabel": "Debt Instrument [Axis]" } } }, "localname": "DebtInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail", "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentFaceAmount": { "auth_ref": [ "r461", "r463" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Face (par) amount of debt instrument at time of issuance.", "label": "Debt Instrument, Face Amount", "terseLabel": "Face Value" } } }, "localname": "DebtInstrumentFaceAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentInterestRateEffectivePercentage": { "auth_ref": [ "r32", "r274", "r461" ], "lang": { "en-US": { "role": { "documentation": "Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.", "label": "Debt Instrument, Interest Rate, Effective Percentage", "terseLabel": "Current Coupon Rate" } } }, "localname": "DebtInstrumentInterestRateEffectivePercentage", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Debt Instrument [Line Items]", "terseLabel": "Debt Instrument [Line Items]" } } }, "localname": "DebtInstrumentLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentNameDomain": { "auth_ref": [ "r33" ], "lang": { "en-US": { "role": { "documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.", "label": "Debt Instrument, Name [Domain]", "terseLabel": "Debt Instrument, Name [Domain]" } } }, "localname": "DebtInstrumentNameDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail", "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail" ], "xbrltype": "domainItemType" }, "us-gaap_DebtInstrumentTable": { "auth_ref": [ "r33", "r111", "r279", "r282", "r283", "r284", "r460", "r461", "r463", "r571" ], "lang": { "en-US": { "role": { "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Schedule of Long-term Debt Instruments [Table]", "terseLabel": "Schedule of Long-term Debt Instruments [Table]" } } }, "localname": "DebtInstrumentTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleGainLoss": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Gain (Loss)", "terseLabel": "Gain (loss) on available for sale security" } } }, "localname": "DebtSecuritiesAvailableForSaleGainLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleRealizedGain": { "auth_ref": [ "r222" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Realized Gain", "terseLabel": "Realized gain" } } }, "localname": "DebtSecuritiesAvailableForSaleRealizedGain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss": { "auth_ref": [ "r222" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Debt Securities, Available-for-sale, Realized Loss", "terseLabel": "Gross realized losses" } } }, "localname": "DebtSecuritiesAvailableForSaleRealizedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesTradingRealizedGain": { "auth_ref": [ "r225" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in net income (trading).", "label": "Debt Securities, Trading, Realized Gain", "negatedLabel": "Realized gains on debt securities" } } }, "localname": "DebtSecuritiesTradingRealizedGain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredCompensationArrangementWithIndividualDisclosurePostretirementBenefitsTextBlock": { "auth_ref": [ "r293", "r294", "r295" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of pension and other postretirement benefit arrangements with individual employees, which are generally based on employment contracts between the entity and one or more selected officers or key employees, and which contain a promise by the employer to pay certain amounts at designated future dates, usually including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period and the carrying amount as of the balance sheet date of the related liability.", "label": "Deferred Compensation Arrangement with Individual Disclosure, Postretirement Benefits [Table Text Block]", "terseLabel": "Schedule of Deferred Compensation Earnings Credits Included in Noninterest Expense" } } }, "localname": "DeferredCompensationArrangementWithIndividualDisclosurePostretirementBenefitsTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.", "label": "Deferred Compensation Liability, Current and Noncurrent", "terseLabel": "Deferred compensation obligations" } } }, "localname": "DeferredCompensationLiabilityCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredFederalIncomeTaxExpenseBenefit": { "auth_ref": [ "r108", "r394", "r397" ], "calculation": { "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": 1.0, "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Federal Income Tax Expense (Benefit)", "terseLabel": "Federal" } } }, "localname": "DeferredFederalIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxAssetsNet": { "auth_ref": [ "r388" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.", "label": "Deferred Income Tax Assets, Net", "totalLabel": "Net deferred tax asset" } } }, "localname": "DeferredIncomeTaxAssetsNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefit": { "auth_ref": [ "r95", "r108", "r394", "r397" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": 2.0, "parentTag": "us-gaap_IncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred Income Tax Expense (Benefit)", "terseLabel": "Deferred income tax expense", "totalLabel": "Deferred tax benefit, Total" } } }, "localname": "DeferredIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]", "terseLabel": "Deferred tax expense" } } }, "localname": "DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DeferredIncomeTaxLiabilities": { "auth_ref": [ "r13", "r14", "r386", "r522", "r585" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 2.0, "parentTag": "us-gaap_DeferredIncomeTaxAssetsNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences.", "label": "Deferred Tax Liabilities, Gross", "negatedTotalLabel": "Total deferred tax liability" } } }, "localname": "DeferredIncomeTaxLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit": { "auth_ref": [ "r108", "r394", "r397" ], "calculation": { "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": 2.0, "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred State and Local Income Tax Expense (Benefit)", "terseLabel": "State" } } }, "localname": "DeferredStateAndLocalIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsGross": { "auth_ref": [ "r387" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 1.0, "parentTag": "us-gaap_DeferredIncomeTaxAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.", "label": "Deferred Tax Assets, Gross", "totalLabel": "Total deferred tax assets" } } }, "localname": "DeferredTaxAssetsGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Tax Assets, Net [Abstract]", "terseLabel": "Deferred tax assets:" } } }, "localname": "DeferredTaxAssetsNetAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": { "auth_ref": [ "r376", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 12.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.", "label": "Deferred Tax Assets, Operating Loss Carryforwards", "terseLabel": "Tax credit related to operating losses" } } }, "localname": "DeferredTaxAssetsOperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsOther": { "auth_ref": [ "r377", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 13.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.", "label": "Deferred Tax Assets, Other", "terseLabel": "Other" } } }, "localname": "DeferredTaxAssetsOther", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsStateTaxes": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 6.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes.", "label": "Deferred Tax Assets, State Taxes", "terseLabel": "State taxes" } } }, "localname": "DeferredTaxAssetsStateTaxes", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxCreditCarryforwards": { "auth_ref": [ "r390", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 11.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.", "label": "Deferred Tax Assets, Tax Credit Carryforwards", "terseLabel": "Tax credits" } } }, "localname": "DeferredTaxAssetsTaxCreditCarryforwards", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail", "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation": { "auth_ref": [ "r376", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 2.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.", "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation", "terseLabel": "Deferred compensation" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions": { "auth_ref": [ "r391" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 3.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.", "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions", "terseLabel": "Accrued pension liability" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost": { "auth_ref": [ "r376", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 7.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.", "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost", "terseLabel": "Share based compensation" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves": { "auth_ref": [ "r376", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 1.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loss reserves other than estimated credit losses.", "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves", "terseLabel": "Allowance for losses and reserve for unfunded commitments" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther": { "auth_ref": [ "r376", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 4.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.", "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other", "terseLabel": "Other accrued expenses" } } }, "localname": "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross": { "auth_ref": [ "r377", "r391" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 10.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities.", "label": "Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross", "terseLabel": "Unrealized loss on securities" } } }, "localname": "DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets": { "auth_ref": [ "r377", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 2.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill.", "label": "Deferred Tax Liabilities, Goodwill and Intangible Assets", "negatedLabel": "Core deposit intangible" } } }, "localname": "DeferredTaxLiabilitiesGoodwillAndIntangibleAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesMortgageServicingRights": { "auth_ref": [ "r377", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 3.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from mortgage servicing rights.", "label": "Deferred Tax Liabilities, Mortgage Servicing Rights", "negatedLabel": "Mortgage servicing rights valuation" } } }, "localname": "DeferredTaxLiabilitiesMortgageServicingRights", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesNetAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deferred Tax Liabilities, Net [Abstract]", "terseLabel": "Deferred tax liabilities:" } } }, "localname": "DeferredTaxLiabilitiesNetAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DeferredTaxLiabilitiesPrepaidExpenses": { "auth_ref": [], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 5.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.", "label": "Deferred Tax Liabilities, Prepaid Expenses", "negatedLabel": "Prepaid expenses and other" } } }, "localname": "DeferredTaxLiabilitiesPrepaidExpenses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment": { "auth_ref": [ "r377", "r391", "r392" ], "calculation": { "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail": { "order": 9.0, "parentTag": "us-gaap_DeferredIncomeTaxLiabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.", "label": "Deferred Tax Liabilities, Property, Plant and Equipment", "negatedLabel": "Depreciation" } } }, "localname": "DeferredTaxLiabilitiesPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesCompanysNetDeferredTaxAssetRecordedinOtherAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation": { "auth_ref": [ "r307" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.", "label": "Defined Benefit Plan, Accumulated Benefit Obligation", "negatedLabel": "Accumulated benefit obligation" } } }, "localname": "DefinedBenefitPlanAccumulatedBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax": { "auth_ref": [ "r44", "r50" ], "calculation": { "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail": { "order": 1.0, "parentTag": "us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).", "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax", "negatedLabel": "Unfunded status of the supplemental retirement plans", "totalLabel": "Amount included in accumulated other comprehensive loss" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax": { "auth_ref": [ "r50", "r317" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.", "label": "Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax", "terseLabel": "Accumulated other comprehensive loss" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax": { "auth_ref": [ "r50", "r317" ], "calculation": { "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail": { "order": 3.0, "parentTag": "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.", "label": "Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax", "negatedLabel": "Net actuarial loss" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax": { "auth_ref": [ "r50", "r317" ], "calculation": { "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).", "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax", "terseLabel": "Prior service cost" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTax": { "auth_ref": [ "r45", "r50", "r317" ], "calculation": { "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of accumulated other comprehensive income (loss) for transition asset (obligation) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.", "label": "Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Transition Asset (Obligation), before Tax", "negatedLabel": "Transition obligation" } } }, "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansDefinedBenefitPensionPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanActuarialGainLoss": { "auth_ref": [ "r300" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.", "label": "Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)", "terseLabel": "Actuarial (loss)/gain" } } }, "localname": "DefinedBenefitPlanActuarialGainLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": { "auth_ref": [ "r313", "r329", "r332" ], "calculation": { "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail": { "order": 5.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Gain (Loss)", "negatedLabel": "Recognized net actuarial loss" } } }, "localname": "DefinedBenefitPlanAmortizationOfGainsLosses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit": { "auth_ref": [ "r314", "r330", "r332" ], "calculation": { "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail": { "order": 4.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Prior Service Cost (Credit)", "terseLabel": "Amortization of prior service cost" } } }, "localname": "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfTransitionAssetObligation": { "auth_ref": [ "r315", "r331" ], "calculation": { "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail": { "order": 3.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transition asset (obligation) recognized in net periodic benefit (cost) credit of defined benefit plan.", "label": "Defined Benefit Plan, Amortization of Transition Asset (Obligation)", "negatedLabel": "Amortization of net obligation at transition" } } }, "localname": "DefinedBenefitPlanAmortizationOfTransitionAssetObligation", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet": { "auth_ref": [ "r296", "r304" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.", "label": "Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position", "terseLabel": "Accrued benefit cost" } } }, "localname": "DefinedBenefitPlanAmountsRecognizedInBalanceSheet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate": { "auth_ref": [ "r319" ], "lang": { "en-US": { "role": { "documentation": "Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate", "terseLabel": "Discount rate used to calculate benefit obligation" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate": { "auth_ref": [ "r319" ], "lang": { "en-US": { "role": { "documentation": "Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate", "terseLabel": "Discount rate used to calculate net periodic pension cost" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease": { "auth_ref": [ "r320" ], "lang": { "en-US": { "role": { "documentation": "Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.", "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase", "terseLabel": "Average annual increase in compensation" } } }, "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedBenefitPlanBenefitObligation": { "auth_ref": [ "r297" ], "calculation": { "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanFundedStatusOfPlan", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.", "label": "Defined Benefit Plan, Benefit Obligation", "negatedPeriodEndLabel": "Benefit obligation at end of year", "negatedPeriodStartLabel": "Benefit obligation at beginning of year" } } }, "localname": "DefinedBenefitPlanBenefitObligation", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid": { "auth_ref": [ "r301", "r333" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.", "label": "Defined Benefit Plan, Benefit Obligation, Benefits Paid", "terseLabel": "Benefits paid" } } }, "localname": "DefinedBenefitPlanBenefitObligationBenefitsPaid", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]", "terseLabel": "Change in benefit obligation:" } } }, "localname": "DefinedBenefitPlanChangeInBenefitObligationRollForward", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]", "terseLabel": "Change in plan assets:" } } }, "localname": "DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanDisclosureLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Defined Benefit Plan Disclosure [Line Items]", "terseLabel": "Defined Benefit Plan Disclosure [Line Items]" } } }, "localname": "DefinedBenefitPlanDisclosureLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail", "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter", "terseLabel": "Expected Benefit Payments to Participants, 2025-2029" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months", "terseLabel": "Expected Benefit Payments to Participants, 2020" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Five", "terseLabel": "Expected Benefit Payments to Participants, 2024" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Four", "terseLabel": "Expected Benefit Payments to Participants, 2023" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Three", "terseLabel": "Expected Benefit Payments to Participants, 2022" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo": { "auth_ref": [ "r308" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Two", "terseLabel": "Expected Benefit Payments to Participants, 2021" } } }, "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear": { "auth_ref": [ "r309" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.", "label": "Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year", "terseLabel": "Estimated Company Contributions, 2020" } } }, "localname": "DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansExpectedBenefitPaymentstoParticipantsandEstimatedContributionstobeMadebyCompanyDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets": { "auth_ref": [ "r303", "r305", "r306", "r332" ], "calculation": { "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanFundedStatusOfPlan", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.", "label": "Defined Benefit Plan, Plan Assets, Amount", "periodEndLabel": "Fair value of plan assets at end of year", "periodStartLabel": "Fair value of plan assets at beginning of year" } } }, "localname": "DefinedBenefitPlanFairValueOfPlanAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanFundedStatusOfPlan": { "auth_ref": [ "r296", "r304" ], "calculation": { "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.", "label": "Defined Benefit Plan, Funded (Unfunded) Status of Plan", "totalLabel": "Funded status" } } }, "localname": "DefinedBenefitPlanFundedStatusOfPlan", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanInterestCost": { "auth_ref": [ "r299", "r312", "r328", "r332" ], "calculation": { "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail": { "order": 2.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost recognized for passage of time related to defined benefit plan.", "label": "Defined Benefit Plan, Interest Cost", "negatedLabel": "Interest cost", "terseLabel": "Interest cost on projected benefit obligation" } } }, "localname": "DefinedBenefitPlanInterestCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail", "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": { "auth_ref": [ "r310", "r326", "r332" ], "calculation": { "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of net periodic benefit cost (credit) for defined benefit plan.", "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)", "totalLabel": "Net periodic pension cost" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanPlanAmendments": { "auth_ref": [ "r302" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.", "label": "Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment", "terseLabel": "Plan amendments" } } }, "localname": "DefinedBenefitPlanPlanAmendments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanServiceCost": { "auth_ref": [ "r298", "r311", "r327", "r332" ], "calculation": { "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail": { "order": 1.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.", "label": "Defined Benefit Plan, Service Cost", "negatedLabel": "Service cost", "terseLabel": "Service cost-benefits earned during the period" } } }, "localname": "DefinedBenefitPlanServiceCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansInformationPertainingtoActivityinSupplementalRetirementPlansDetail", "http://tcbk.com/role/RetirementPlansNetPeriodicBenefitCostRecognizedforSupplementalRetirementPlansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanCostRecognized": { "auth_ref": [ "r334" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost for defined contribution plan.", "label": "Defined Contribution Plan, Cost", "terseLabel": "401(k) Plan benefits expense" } } }, "localname": "DefinedContributionPlanCostRecognized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanDisclosuresTableTextBlock": { "auth_ref": [ "r334" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans.", "label": "Defined Contribution Plan Disclosures [Table Text Block]", "terseLabel": "Summary of 401(k) Contribution Plan" } } }, "localname": "DefinedContributionPlanDisclosuresTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of discretionary contributions made by an employer to a defined contribution plan.", "label": "Defined Contribution Plan, Employer Discretionary Contribution Amount", "terseLabel": "401(k) Plan contributions made by the Company" } } }, "localname": "DefinedContributionPlanEmployerDiscretionaryContributionAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.", "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay", "terseLabel": "Discretionary matching contribution maximum percentage of eligible compensation" } } }, "localname": "DefinedContributionPlanEmployerMatchingContributionPercent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "percentItemType" }, "us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage employer matches of the employee's percentage contribution matched.", "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Match", "terseLabel": "Discretionary matching contribution equal to percentage of participant's contribution" } } }, "localname": "DefinedContributionPlanEmployerMatchingContributionPercentOfMatch", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail" ], "xbrltype": "percentItemType" }, "us-gaap_DepositAccountMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Bank account at depository institution allowing money to be withdrawn or deposited by account holder.", "label": "Deposit Account [Member]", "terseLabel": "Service charges on deposit accounts" } } }, "localname": "DepositAccountMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "domainItemType" }, "us-gaap_DepositLiabilitiesDisclosuresTextBlock": { "auth_ref": [ "r529", "r567" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for deposit liabilities including data and tables. It may include a description of the entity's deposit liabilities, the aggregate amount of time deposits (including certificates of deposit) in denominations of $100,000 or more at the balance sheet date; the aggregate amount of any demand deposits that have been reclassified as loan balances, such as overdrafts, at the balance sheet date; deposits that are received on terms other than those in the normal course of business, the amount of accrued interest on deposit liabilities; securities, mortgage loans or other financial instruments that serve as collateral for deposits; for time deposits having a remaining term of more than one year, the aggregate amount of maturities for each of the five years following the balance sheet date; and the weighted average interest rate for all deposit liabilities held by the entity.", "label": "Deposit Liabilities Disclosures [Text Block]", "terseLabel": "Deposits" } } }, "localname": "DepositLiabilitiesDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/Deposits" ], "xbrltype": "textBlockItemType" }, "us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1": { "auth_ref": [ "r566" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.", "label": "Deposit Liabilities Reclassified as Loans Receivable", "terseLabel": "Deposit Liabilities Reclassified as Loans Receivable" } } }, "localname": "DepositLiabilitiesReclassifiedAsLoansReceivable1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepositLiabilitiesTypeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of type of deposit liability.", "label": "Deposit Liabilities, Type [Table Text Block]", "terseLabel": "Summary of Balances of Deposits" } } }, "localname": "DepositLiabilitiesTypeTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_Deposits": { "auth_ref": [ "r529" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.", "label": "Deposits", "totalLabel": "Total deposits" } } }, "localname": "Deposits", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepositsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deposits [Abstract]", "terseLabel": "Deposits [Abstract]" } } }, "localname": "DepositsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DepositsFairValueDisclosure": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.", "label": "Deposits, Fair Value Disclosure", "terseLabel": "Deposits" } } }, "localname": "DepositsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepositsInterestBearingAndNoninterestBearingAlternativeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deposits, Interest-bearing and Noninterest-bearing, Alternative [Abstract]", "terseLabel": "Deposits" } } }, "localname": "DepositsInterestBearingAndNoninterestBearingAlternativeAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_DepositsSavingsDeposits": { "auth_ref": [ "r529" ], "calculation": { "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail": { "order": 3.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).", "label": "Deposits, Savings Deposits", "terseLabel": "Savings" } } }, "localname": "DepositsSavingsDeposits", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepreciationAmortizationAndAccretionNet": { "auth_ref": [ "r95" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 17.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.", "label": "Depreciation, Amortization and Accretion, Net", "terseLabel": "Depreciation of premises and equipment, and amortization" } } }, "localname": "DepreciationAmortizationAndAccretionNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepreciationNonproduction": { "auth_ref": [ "r95", "r248" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives.", "label": "Depreciation, Nonproduction", "terseLabel": "Depreciation expense for premises and equipment" } } }, "localname": "DepreciationNonproduction", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeContractTypeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financial instrument or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.", "label": "Derivative Contract [Domain]", "terseLabel": "Derivative Contract [Domain]" } } }, "localname": "DerivativeContractTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeInstrumentRiskAxis": { "auth_ref": [ "r431", "r432", "r434", "r435" ], "lang": { "en-US": { "role": { "documentation": "Information by type of derivative contract.", "label": "Derivative Instrument [Axis]", "terseLabel": "Derivative Instrument [Axis]" } } }, "localname": "DerivativeInstrumentRiskAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "stringItemType" }, "us-gaap_DirectorMember": { "auth_ref": [ "r482" ], "lang": { "en-US": { "role": { "documentation": "Person serving on the board of directors (who collectively have responsibility for governing the entity).", "label": "Director [Member]", "terseLabel": "Director Compensation" } } }, "localname": "DirectorMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": { "auth_ref": [ "r286", "r373" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.", "label": "Disclosure of Compensation Related Costs, Share-based Payments [Text Block]", "terseLabel": "Stock Options and Other Equity-Based Incentive Instruments" } } }, "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstruments" ], "xbrltype": "textBlockItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Disclosure of Compensation Related Costs, Share-based Payments [Abstract]", "terseLabel": "Disclosure of Compensation Related Costs, Share-based Payments [Abstract]" } } }, "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_DividendIncomeOperating": { "auth_ref": [ "r553" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 4.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of operating dividend income on securities.", "label": "Dividend Income, Operating", "terseLabel": "Dividends" } } }, "localname": "DividendIncomeOperating", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsCommonStockCash": { "auth_ref": [ "r285" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.", "label": "Dividends, Common Stock, Cash", "negatedLabel": "Dividends paid" } } }, "localname": "DividendsCommonStockCash", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsPayableCurrentAndNoncurrent": { "auth_ref": [ "r9", "r11", "r523", "r591" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.", "label": "Dividends Payable", "terseLabel": "Amount available to dividend to holding company" } } }, "localname": "DividendsPayableCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_DomesticCountryMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Designated tax department of the government that is entitled to levy and collect income taxes from the entity in its country of domicile.", "label": "Domestic Tax Authority [Member]", "terseLabel": "Federal" } } }, "localname": "DomesticCountryMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share [Abstract]", "terseLabel": "Earnings per share", "verboseLabel": "Per common share:" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r65", "r119", "r125", "r127", "r128", "r129", "r133", "r542", "r601" ], "lang": { "en-US": { "role": { "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.", "label": "Earnings Per Share, Basic", "terseLabel": "Basic" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r65", "r119", "r125", "r127", "r128", "r129", "r133", "r542", "r601" ], "lang": { "en-US": { "role": { "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.", "label": "Earnings Per Share, Diluted", "terseLabel": "Diluted", "verboseLabel": "Net income (diluted)" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerSharePolicyTextBlock": { "auth_ref": [ "r106", "r130", "r131", "r132" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.", "label": "Earnings Per Share, Policy [Policy Text Block]", "terseLabel": "Earnings per Share" } } }, "localname": "EarningsPerSharePolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r134" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for earnings per share.", "label": "Earnings Per Share [Text Block]", "terseLabel": "Earnings Per Share" } } }, "localname": "EarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/EarningsPerShare" ], "xbrltype": "textBlockItemType" }, "us-gaap_EffectiveIncomeTaxRateContinuingOperations": { "auth_ref": [ "r112", "r381", "r382" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Effective Income Tax Rate Reconciliation, Percent", "totalLabel": "Effective Tax Rate" } } }, "localname": "EffectiveIncomeTaxRateContinuingOperations", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": { "auth_ref": [ "r381", "r382", "r396" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 1.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).", "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent", "terseLabel": "Federal corporate tax rate", "verboseLabel": "Federal statutory income tax rate" } } }, "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail", "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost": { "auth_ref": [ "r381", "r382", "r396" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 8.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity-based compensation costs.", "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent", "negatedLabel": "Equity compensation" } } }, "localname": "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments": { "auth_ref": [ "r381", "r382", "r396" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 10.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.", "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Percent", "terseLabel": "Other" } } }, "localname": "EffectiveIncomeTaxRateReconciliationOtherAdjustments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount": { "auth_ref": [ "r381" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.", "label": "Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount", "terseLabel": "Excess tax benefit recognized in income Service condition vesting RSUs" } } }, "localname": "EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes": { "auth_ref": [ "r381", "r382", "r396" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 2.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).", "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent", "terseLabel": "State income taxes, net of federal tax benefit" } } }, "localname": "EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits": { "auth_ref": [ "r381", "r382", "r396" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 6.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.", "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Percent", "negatedLabel": "Low income housing tax credits" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxCredits", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationTaxExemptIncome": { "auth_ref": [ "r381", "r382", "r396" ], "calculation": { "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail": { "order": 4.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes.", "label": "Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent", "negatedLabel": "Tax-exempt interest on municipal obligations" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTaxExemptIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesReconciliationofEffectiveTaxRateandStatutoryFederalIncomeTaxRateDetail" ], "xbrltype": "percentItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions": { "auth_ref": [ "r356" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.", "label": "Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options", "terseLabel": "Pre-tax compensation costs" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense": { "auth_ref": [ "r355" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.", "label": "Employee Service Share-based Compensation, Tax Benefit from Compensation Expense", "terseLabel": "Excess tax benefit recognized in income" } } }, "localname": "EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeStockOptionMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "An arrangement whereby an employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. Although there are variations, normally, after vesting, when an option is exercised, the employee-holder pays the strike value in cash to the issuing employer-entity and receives equity shares. The equity shares can be sold into the market for cash at the current market price without restriction. Options may be used to attract, retain and incentivize employees, in addition to their regular salary and other benefits.", "label": "Employee Stock Option [Member]", "terseLabel": "Stock options" } } }, "localname": "EmployeeStockOptionMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_EmployeeStockOwnershipPlanESOPCashContributionsToESOP": { "auth_ref": [ "r370" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the amount of cash contributions during the period made by the entity to the Employee Stock Ownership Plan (ESOP).", "label": "Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP", "terseLabel": "ESOP contributions made by the Company" } } }, "localname": "EmployeeStockOwnershipPlanESOPCashContributionsToESOP", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansSummaryofESOPActivitiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense": { "auth_ref": [ "r371" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of plan compensation cost recognized during the period.", "label": "Employee Stock Ownership Plan (ESOP), Compensation Expense", "terseLabel": "ESOP benefits expense" } } }, "localname": "EmployeeStockOwnershipPlanESOPCompensationExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansSummaryofESOPActivitiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquipmentExpense": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 10.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with the entity's accounting policy. This item may also include furniture expenses.", "label": "Equipment Expense", "terseLabel": "Equipment" } } }, "localname": "EquipmentExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Equity [Abstract]", "terseLabel": "Equity [Abstract]" } } }, "localname": "EquityAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r278" ], "lang": { "en-US": { "role": { "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.", "label": "Equity Component [Domain]", "terseLabel": "Equity Component [Domain]" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_EquityMethodInvestmentAggregateCost": { "auth_ref": [ "r25" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This element represents the aggregate cost of investments accounted for under the equity method of accounting.", "label": "Equity Method Investment, Aggregate Cost", "terseLabel": "Company's investments in the trusts" } } }, "localname": "EquityMethodInvestmentAggregateCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquitySecuritiesFvNi": { "auth_ref": [ "r452" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).", "label": "Equity Securities, FV-NI", "terseLabel": "Marketable equity securities", "verboseLabel": "Marketable securities recorded" } } }, "localname": "EquitySecuritiesFvNi", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EquitySecuritiesFvNiRestricted": { "auth_ref": [ "r492" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of restricted investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).", "label": "Equity Securities, FV-NI, Restricted", "terseLabel": "Restricted equity securities", "verboseLabel": "Transfers between any fair value levels" } } }, "localname": "EquitySecuritiesFvNiRestricted", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAdditionalInformationDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_EstimateOfFairValueFairValueDisclosureMember": { "auth_ref": [ "r454" ], "lang": { "en-US": { "role": { "documentation": "Measured as an estimate of fair value.", "label": "Estimate of Fair Value Measurement [Member]", "terseLabel": "Fair Value" } } }, "localname": "EstimateOfFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ExecutiveOfficerMember": { "auth_ref": [ "r482" ], "lang": { "en-US": { "role": { "documentation": "One of the ranking officers of the entity, appointed to the position by the board of directors.", "label": "Executive Officer [Member]", "terseLabel": "Executive Compensation" } } }, "localname": "ExecutiveOfficerMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]", "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r438", "r439", "r440", "r441", "r448", "r449" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.", "label": "Fair Value Measurements, Recurring and Nonrecurring [Table]", "terseLabel": "Fair Value Measurements, Recurring and Nonrecurring [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value Measurement Inputs and Valuation Techniques [Line Items]", "terseLabel": "Fair Value Measurement Inputs and Valuation Techniques [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.", "label": "Fair Value Measurement Inputs and Valuation Techniques [Table]", "terseLabel": "Fair Value Measurement Inputs and Valuation Techniques [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.", "label": "Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]", "terseLabel": "Quantitative Information about Recurring Level 3 Fair Value Measurements" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock": { "auth_ref": [ "r438", "r439", "r440", "r442" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3).", "label": "Fair Value Measurements, Nonrecurring [Table Text Block]", "terseLabel": "Assets and Liabilities Measured at Fair Value on Nonrecurring Basis" } } }, "localname": "FairValueAssetsMeasuredOnNonrecurringBasisTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain": { "auth_ref": [ "r444", "r449" ], "lang": { "en-US": { "role": { "documentation": "Class of asset.", "label": "Asset Class [Domain]", "terseLabel": "Asset Class [Domain]" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]", "terseLabel": "Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]" } } }, "localname": "FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByAssetClassAxis": { "auth_ref": [ "r439", "r449" ], "lang": { "en-US": { "role": { "documentation": "Information by class of asset.", "label": "Asset Class [Axis]", "terseLabel": "Asset Class [Axis]" } } }, "localname": "FairValueByAssetClassAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByBalanceSheetGroupingTable": { "auth_ref": [ "r439", "r455", "r456" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.", "label": "Fair Value, by Balance Sheet Grouping [Table]", "terseLabel": "Fair Value, by Balance Sheet Grouping [Table]" } } }, "localname": "FairValueByBalanceSheetGroupingTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r305", "r306", "r332", "r440", "r488" ], "lang": { "en-US": { "role": { "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.", "label": "Fair Value Hierarchy and NAV [Axis]", "terseLabel": "Fair Value Hierarchy and NAV [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByLiabilityClassAxis": { "auth_ref": [ "r447", "r449" ], "lang": { "en-US": { "role": { "documentation": "Information by class of liability.", "label": "Liability Class [Axis]", "terseLabel": "Liability Class [Axis]" } } }, "localname": "FairValueByLiabilityClassAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementBasisAxis": { "auth_ref": [ "r439", "r450" ], "lang": { "en-US": { "role": { "documentation": "Information by measurement basis.", "label": "Measurement Basis [Axis]", "terseLabel": "Measurement Basis [Axis]" } } }, "localname": "FairValueByMeasurementBasisAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r438" ], "lang": { "en-US": { "role": { "documentation": "Information by measurement frequency.", "label": "Measurement Frequency [Axis]", "terseLabel": "Measurement Frequency [Axis]" } } }, "localname": "FairValueByMeasurementFrequencyAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosureItemAmountsDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Measurement basis, for example, but not limited to, reported value, fair value, portion at fair value, portion at other than fair value.", "label": "Fair Value Measurement [Domain]", "terseLabel": "Fair Value Measurement [Domain]" } } }, "localname": "FairValueDisclosureItemAmountsDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability": { "auth_ref": [ "r454" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.", "label": "Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability", "terseLabel": "Fair value, Off-balance sheet" } } }, "localname": "FairValueDisclosureOffbalanceSheetRisksAmountLiability", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.", "label": "Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability", "terseLabel": "Contract amount, Off-balance sheet" } } }, "localname": "FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Fair Value Disclosures [Abstract]", "terseLabel": "Fair Value Disclosures [Abstract]" } } }, "localname": "FairValueDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r451" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.", "label": "Fair Value Disclosures [Text Block]", "terseLabel": "Fair Value Measurement" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurement" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r305", "r306", "r332", "r440", "r489" ], "lang": { "en-US": { "role": { "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.", "label": "Fair Value, Inputs, Level 1 [Member]", "terseLabel": "Level\u00a01" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r305", "r306", "r332", "r440", "r490" ], "lang": { "en-US": { "role": { "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.", "label": "Fair Value, Inputs, Level 2 [Member]", "terseLabel": "Level\u00a02" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r305", "r306", "r332", "r440", "r491" ], "lang": { "en-US": { "role": { "documentation": "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Inputs, Level 3 [Member]", "terseLabel": "Level\u00a03" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain": { "auth_ref": [ "r444", "r449" ], "lang": { "en-US": { "role": { "documentation": "Represents classes of liabilities measured and disclosed at fair value.", "label": "Fair Value by Liability Class [Domain]", "terseLabel": "Fair Value by Liability Class [Domain]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]", "terseLabel": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable": { "auth_ref": [ "r444", "r449" ], "lang": { "en-US": { "role": { "documentation": "Schedule of information required and determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of liabilities using significant unobservable inputs (level 3). Separately presenting changes during the period, attributable to: (1) total gains or losses for the period (realized and unrealized) and location reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); (3) transfers in and/or out of Level 3.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]", "terseLabel": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock": { "auth_ref": [ "r444", "r449" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]", "terseLabel": "Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueMeasurementFrequencyDomain": { "auth_ref": [ "r438", "r447" ], "lang": { "en-US": { "role": { "documentation": "Provides the general categories used to describe the frequency with which financial assets and liabilities (as defined) are measured at fair value (on a recurring or nonrecurring basis).", "label": "Fair Value, Measurement Frequency [Domain]", "terseLabel": "Fair Value, Measurement Frequency [Domain]" } } }, "localname": "FairValueMeasurementFrequencyDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings": { "auth_ref": [ "r445" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings", "terseLabel": "Change Included in\u00a0Earnings" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues": { "auth_ref": [ "r446" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances", "terseLabel": "Issuances" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net", "terseLabel": "Transfers into\u00a0(out\u00a0of) Level\u00a03" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue": { "auth_ref": [ "r444" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value", "periodEndLabel": "Ending Balance", "periodStartLabel": "Beginning Balance" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Hierarchy and NAV [Domain]", "terseLabel": "Fair Value Hierarchy and NAV [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsNonrecurringMember": { "auth_ref": [ "r438", "r447" ], "lang": { "en-US": { "role": { "documentation": "This item represents a description of the frequency with which certain items are measured at fair value. Items measured at fair value on a nonrecurring basis generally include those items for which measurement inputs are not readily available and which are measured at fair value infrequently (for example, impaired assets).", "label": "Fair Value, Measurements, Nonrecurring [Member]", "terseLabel": "Fair Value Nonrecurring Basis" } } }, "localname": "FairValueMeasurementsNonrecurringMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementAssetsandLiabilitiesMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsRecurringMember": { "auth_ref": [ "r438", "r447" ], "lang": { "en-US": { "role": { "documentation": "This item represents a description of the frequency with which certain items are measured at fair value. Items measured at fair value on a recurring basis generally include those items for which measurement inputs are readily available and which are measured at fair value at successive reporting periods.", "label": "Fair Value, Measurements, Recurring [Member]", "terseLabel": "Fair Value Measurements on Recurring Basis" } } }, "localname": "FairValueMeasurementsRecurringMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueOfAssetsAcquired": { "auth_ref": [ "r101", "r102", "r103" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The fair value of assets acquired in noncash investing or financing activities.", "label": "Fair Value of Assets Acquired", "terseLabel": "Assets acquired in acquisition and goodwill, net" } } }, "localname": "FairValueOfAssetsAcquired", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueOffBalanceSheetRisksDisclosureInformationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]", "terseLabel": "Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]" } } }, "localname": "FairValueOffBalanceSheetRisksDisclosureInformationLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd": { "auth_ref": [ "r530" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The maximum balance outstanding at any month end during the period as of the Balance Sheet date.", "label": "Federal Home Loan Bank, Advances, Activity for Year, Maximum Outstanding at any Month End", "terseLabel": "FHLB collateral line of credit, outstanding balance" } } }, "localname": "FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate": { "auth_ref": [ "r568", "r570" ], "lang": { "en-US": { "role": { "documentation": "Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.", "label": "Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate", "terseLabel": "Collateralized borrowing, fixed rate" } } }, "localname": "FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsNonprintingDetail" ], "xbrltype": "percentItemType" }, "us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds": { "auth_ref": [ "r31", "r530", "r568" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).", "label": "Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds", "terseLabel": "Unused correspondent banking lines of credit from commercial banks for federal funds" } } }, "localname": "FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable": { "auth_ref": [ "r31", "r530", "r568" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).", "label": "Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available", "terseLabel": "FHLB collateral line of credit, maximum borrowings capacity" } } }, "localname": "FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinanceLoanAndLeaseReceivablesHeldForInvestmentsForeclosedAssetsPolicy": { "auth_ref": [ "r106", "r184" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for foreclosed assets or repossessions.", "label": "Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block]", "terseLabel": "Foreclosed Assets" } } }, "localname": "FinanceLoanAndLeaseReceivablesHeldForInvestmentsForeclosedAssetsPolicy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_FinanceLoanAndLeaseReceivablesHeldForSalePolicy": { "auth_ref": [ "r106", "r155", "r168", "r175", "r180", "r186" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for those finance, loan and lease receivables classified as held for sale. This disclosure may include how the entity determines when to classify a loan or receivable as held for sale, the basis at which such receivables are carried in the entity's statements of financial position, how such receivables are valued, the method used to determine the lower of cost or fair value (that is, on an aggregate or individual asset basis), the treatment of commitment and other fees and origination costs, and how transfers to and from the held for investment portfolio are accounted for.", "label": "Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block]", "terseLabel": "Loans Held for Sale" } } }, "localname": "FinanceLoanAndLeaseReceivablesHeldForSalePolicy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember": { "auth_ref": [ "r191" ], "lang": { "en-US": { "role": { "documentation": "Financial asset acquired with deteriorated credit quality.", "label": "Financial Asset Acquired with Credit Deterioration [Member]", "terseLabel": "Financial Asset Acquired with Credit Deterioration" } } }, "localname": "FinancialAssetAcquiredWithCreditDeteriorationMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialAssetOriginatedMember": { "auth_ref": [ "r191" ], "lang": { "en-US": { "role": { "documentation": "Financial asset originated, with deteriorated credit quality and without deteriorated credit quality.", "label": "Financial Asset Originated [Member]", "terseLabel": "Originated" } } }, "localname": "FinancialAssetOriginatedMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialInstrumentAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of financial instrument.", "label": "Financial Instrument [Axis]", "terseLabel": "Financial Instrument [Axis]" } } }, "localname": "FinancialInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]", "terseLabel": "Financial assets:" } } }, "localname": "FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]", "terseLabel": "Financial liabilities:" } } }, "localname": "FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancialServiceOtherMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Financial assistance, including, but not limited to, management and maintenance of depositor account, credit card, merchant discount, trust, investment and insurance, classified as other.", "label": "Financial Service, Other [Member]", "terseLabel": "Other service fees" } } }, "localname": "FinancialServiceOtherMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLosses": { "auth_ref": [ "r156" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail": { "order": 3.0, "parentTag": "us-gaap_LoansAndLeasesReceivableAllowance", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "A valuation allowance for financing receivables that are expected to be uncollectible.", "label": "Financing Receivable, Allowance for Credit Losses", "terseLabel": "Loans\u00a0acquired with\u00a0deteriorated credit quality" } } }, "localname": "FinancingReceivableAllowanceForCreditLosses", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment": { "auth_ref": [ "r159" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail": { "order": 1.0, "parentTag": "us-gaap_LoansAndLeasesReceivableAllowance", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.", "label": "Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment", "terseLabel": "Loans\u00a0pooled for\u00a0evaluation" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1": { "auth_ref": [ "r159" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail": { "order": 2.0, "parentTag": "us-gaap_LoansAndLeasesReceivableAllowance", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.", "label": "Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment", "terseLabel": "Individually evaluated\u00a0for impairment" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment": { "auth_ref": [ "r160" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The balance of financing receivables that were collectively evaluated for impairment.", "label": "Financing Receivable, Collectively Evaluated for Impairment", "terseLabel": "Loans\u00a0pooled for\u00a0evaluation" } } }, "localname": "FinancingReceivableCollectivelyEvaluatedForImpairment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock": { "auth_ref": [ "r169", "r181" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics.", "label": "Financing Receivable Credit Quality Indicators [Table Text Block]", "terseLabel": "Schedule Credit Quality Indicators" } } }, "localname": "FinancingReceivableCreditQualityIndicatorsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FinancingReceivableImpairedLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Financing Receivable, Impaired [Line Items]", "terseLabel": "Financing Receivable, Impaired [Line Items]" } } }, "localname": "FinancingReceivableImpairedLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment": { "auth_ref": [ "r160" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The balance of financing receivables that were individually evaluated for impairment.", "label": "Financing Receivable, Individually Evaluated for Impairment", "terseLabel": "Individually evaluated\u00a0for impairment" } } }, "localname": "FinancingReceivableIndividuallyEvaluatedForImpairment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableModificationsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Financing Receivable, Modifications [Line Items]", "terseLabel": "Financing Receivable, Modifications [Line Items]" } } }, "localname": "FinancingReceivableModificationsLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableModificationsNumberOfContracts2": { "auth_ref": [ "r171" ], "lang": { "en-US": { "role": { "documentation": "Number of financing receivables that have been modified by troubled debt restructurings.", "label": "Financing Receivable, Modifications, Number of Contracts", "terseLabel": "Number" } } }, "localname": "FinancingReceivableModificationsNumberOfContracts2", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "integerItemType" }, "us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2": { "auth_ref": [ "r171" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Post-modification amount of investment in financing receivables modified by troubled debt restructurings.", "label": "Financing Receivable, Modifications, Post-Modification Recorded Investment", "terseLabel": "Post-mod outstanding principal balance" } } }, "localname": "FinancingReceivableModificationsPostModificationRecordedInvestment2", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2": { "auth_ref": [ "r171" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.", "label": "Financing Receivable, Modifications, Pre-Modification Recorded Investment", "terseLabel": "Pre-mod outstanding principal balance" } } }, "localname": "FinancingReceivableModificationsPreModificationRecordedInvestment2", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableModificationsRecordedInvestment": { "auth_ref": [ "r193" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.", "label": "Financing Receivable, Modifications, Recorded Investment", "terseLabel": "Impaired TDR Loans" } } }, "localname": "FinancingReceivableModificationsRecordedInvestment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1": { "auth_ref": [ "r172" ], "lang": { "en-US": { "role": { "documentation": "Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.", "label": "Financing Receivable, Modifications, Subsequent Default, Number of Contracts", "terseLabel": "Number\u00a0that defaulted\u00a0during the period" } } }, "localname": "FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "integerItemType" }, "us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1": { "auth_ref": [ "r172" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.", "label": "Financing Receivable, Modifications, Subsequent Default, Recorded Investment", "terseLabel": "Recorded investment\u00a0of TDRs that defaulted\u00a0during the period" } } }, "localname": "FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivablePortfolioSegmentAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by the level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses.", "label": "Financing Receivable Portfolio Segment [Axis]", "terseLabel": "Financing Receivable Portfolio Segment [Axis]" } } }, "localname": "FinancingReceivablePortfolioSegmentAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivablePortfolioSegmentDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Level at which an entity develops and documents a systematic methodology to determine its allowance for credit losses.", "label": "Financing Receivable Portfolio Segment [Domain]", "terseLabel": "Financing Receivable Portfolio Segment [Domain]" } } }, "localname": "FinancingReceivablePortfolioSegmentDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing": { "auth_ref": [ "r177" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Recorded investment in financing receivables that are 90 days or more past due and still accruing.", "label": "Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing", "terseLabel": "Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing" } } }, "localname": "FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis": { "auth_ref": [ "r178", "r179" ], "lang": { "en-US": { "role": { "documentation": "Information by class of financing receivable determined on the basis of initial measurement attribute, risk characteristics and method of monitoring and assessing credit risk.", "label": "Class of Financing Receivable, Type [Axis]", "terseLabel": "Class of Financing Receivable, Type [Axis]" } } }, "localname": "FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financing receivables determined on the basis of initial measurement attribute, risk characteristics and method of monitoring and assessing credit risk.", "label": "Class of Financing Receivable, Type [Domain]", "terseLabel": "Class of Financing Receivable, Type [Domain]" } } }, "localname": "FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentCurrent": { "auth_ref": [ "r179" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail": { "order": 2.0, "parentTag": "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Financing receivables that are current.", "label": "Financing Receivable, Recorded Investment, Current", "terseLabel": "Financing Receivable, Recorded Investment, Current" } } }, "localname": "FinancingReceivableRecordedInvestmentCurrent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus": { "auth_ref": [ "r176" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.", "label": "Financing Receivable, Recorded Investment, Nonaccrual Status", "terseLabel": "Nonaccrual loans" } } }, "localname": "FinancingReceivableRecordedInvestmentNonaccrualStatus", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentPastDue": { "auth_ref": [ "r179" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail": { "order": 1.0, "parentTag": "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Recorded Investment in financing receivables that are past due at the balance sheet date.", "label": "Financing Receivable, Recorded Investment, Past Due", "terseLabel": "Financing Receivable, Recorded Investment, Past Due" } } }, "localname": "FinancingReceivableRecordedInvestmentPastDue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Financing Receivable, Recorded Investment, Past Due [Line Items]", "terseLabel": "Financing Receivable, Recorded Investment, Past Due [Line Items]" } } }, "localname": "FinancingReceivableRecordedInvestmentPastDueLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivables30To59DaysPastDueMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financing receivables that are more than 29 days past due but fewer than 60 days past due.", "label": "Financing Receivables, 30 to 59 Days Past Due [Member]", "terseLabel": "Financing Receivables, 30 to 59 Days Past Due" } } }, "localname": "FinancingReceivables30To59DaysPastDueMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivables60To89DaysPastDueMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financing receivables that are more than 59 days past due but fewer than 90 days past due.", "label": "Financing Receivables, 60 to 89 Days Past Due [Member]", "terseLabel": "Financing Receivables, 60 to 89 Days Past Due" } } }, "localname": "FinancingReceivables60To89DaysPastDueMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Financing receivables that are equal to or greater than 90 days past due.", "label": "Financing Receivables, Equal to Greater than 90 Days Past Due [Member]", "terseLabel": "Financing Receivables, Equal to Greater than 90 Days Past Due" } } }, "localname": "FinancingReceivablesEqualToGreaterThan90DaysPastDueMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivablesPeriodPastDueAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by period in which financing receivables are past due. Element name and standard label in Financing Receivables, [numeric lower end] to [numeric higher end] [date measure] Past Due [Member] or Financing Receivables, Greater Than [low end numeric value] [date measure] Past Due [Member] or Financing Receivables, Less Than [high end numeric value] [date measure] Past Due [Member] formats.", "label": "Financing Receivables, Period Past Due [Axis]", "terseLabel": "Financing Receivables, Period Past Due [Axis]" } } }, "localname": "FinancingReceivablesPeriodPastDueAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivablesPeriodPastDueDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Period in which financing receivables are past due. Element name and standard label in Financing Receivables, [numeric lower end] to [numeric higher end] [date measure] Past Due [Member] or Financing Receivables, Greater Than [low end numeric value] [date measure] Past Due [Member] or Financing Receivables, Less Than [high end numeric value] [date measure] Past Due [Member] formats.", "label": "Financing Receivables, Period Past Due [Domain]", "terseLabel": "Financing Receivables, Period Past Due [Domain]" } } }, "localname": "FinancingReceivablesPeriodPastDueDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FiniteLivedCoreDepositsGross": { "auth_ref": [ "r241" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Bank deposits belonging to an acquired bank that can be counted on as a stable source of lending funds. These deposits have the following attributes: predictable costs and low sensitivity to interest rates. This intangible asset is usually amortized over its estimated useful life.", "label": "Finite-Lived Core Deposits, Gross", "periodEndLabel": "Core deposit intangibles, Ending balance", "periodStartLabel": "Core deposit intangibles, Beginning balance" } } }, "localname": "FiniteLivedCoreDepositsGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetUsefulLife": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Finite-Lived Intangible Asset, Useful Life", "terseLabel": "Finite lived intangible asset estimated useful life" } } }, "localname": "FiniteLivedIntangibleAssetUsefulLife", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": { "auth_ref": [ "r242" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Finite-Lived Intangible Assets, Accumulated Amortization", "negatedPeriodEndLabel": "Accumulated amortization, Ending balance", "negatedPeriodStartLabel": "Accumulated amortization, Beginning balance" } } }, "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive": { "auth_ref": [], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": 6.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Finite-Lived Intangible Assets, Amortization Expense, after Year Five", "terseLabel": "Thereafter" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": { "auth_ref": [ "r244" ], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": 5.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months", "terseLabel": "2020" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": { "auth_ref": [ "r244" ], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": 4.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Finite-Lived Intangible Assets, Amortization Expense, Year Five", "terseLabel": "2024" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": { "auth_ref": [ "r244" ], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": 3.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Finite-Lived Intangible Assets, Amortization Expense, Year Four", "terseLabel": "2023" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": { "auth_ref": [ "r244" ], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": 1.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Finite-Lived Intangible Assets, Amortization Expense, Year Three", "terseLabel": "2022" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": { "auth_ref": [ "r244" ], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": 2.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Finite-Lived Intangible Assets, Amortization Expense, Year Two", "terseLabel": "2021" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis": { "auth_ref": [ "r239", "r240", "r242", "r245", "r499" ], "lang": { "en-US": { "role": { "documentation": "Information by major type or class of finite-lived intangible assets.", "label": "Finite-Lived Intangible Assets by Major Class [Axis]", "terseLabel": "Finite-Lived Intangible Assets by Major Class [Axis]" } } }, "localname": "FiniteLivedIntangibleAssetsByMajorClassAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FiniteLivedIntangibleAssetsLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Finite-Lived Intangible Assets [Line Items]", "terseLabel": "Finite-Lived Intangible Assets [Line Items]" } } }, "localname": "FiniteLivedIntangibleAssetsLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain": { "auth_ref": [ "r239", "r241" ], "lang": { "en-US": { "role": { "documentation": "The major class of finite-lived intangible asset (for example, patents, trademarks, copyrights, etc.) A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.", "label": "Finite-Lived Intangible Assets, Major Class Name [Domain]", "terseLabel": "Finite-Lived Intangible Assets, Major Class Name [Domain]" } } }, "localname": "FiniteLivedIntangibleAssetsMajorClassNameDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_FiniteLivedIntangibleAssetsNet": { "auth_ref": [ "r242" ], "calculation": { "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Finite-Lived Intangible Assets, Net", "periodEndLabel": "Core deposit intangibles, net, Ending balance", "periodStartLabel": "Core deposit intangibles, net, Beginning balance", "totalLabel": "Total" } } }, "localname": "FiniteLivedIntangibleAssetsNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsPurchaseAccountingAdjustments": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for purchase accounting adjustments.", "label": "Finite-Lived Intangible Assets, Purchase Accounting Adjustments", "terseLabel": "Core deposit intangible" } } }, "localname": "FiniteLivedIntangibleAssetsPurchaseAccountingAdjustments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ForeclosedAssets": { "auth_ref": [ "r153", "r154" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.", "label": "Repossessed Assets", "periodEndLabel": "Ending balance, net", "periodStartLabel": "Beginning balance, net", "terseLabel": "Foreclosed assets" } } }, "localname": "ForeclosedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail", "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_FurnitureAndFixturesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.", "label": "Furniture and Fixtures [Member]", "terseLabel": "Furniture and Equipment" } } }, "localname": "FurnitureAndFixturesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_GainLossOnDispositionOfAssets": { "auth_ref": [ "r95", "r247", "r252" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 19.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.", "label": "Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property", "negatedLabel": "Loss on disposal of fixed assets" } } }, "localname": "GainLossOnDispositionOfAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnSalesOfLoansNet": { "auth_ref": [ "r95", "r548", "r605" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 4.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 6.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.", "label": "Gain (Loss) on Sales of Loans, Net", "negatedLabel": "Gain on sale of loans", "terseLabel": "Gain on sale of loans" } } }, "localname": "GainLossOnSalesOfLoansNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainOnSaleOfInvestments": { "auth_ref": [ "r67", "r68", "r95", "r539", "r602" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 13.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 5.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 3.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.", "label": "Gain on Sale of Investments", "negatedLabel": "Gain on sale of investment securities", "terseLabel": "Gain on sale of investment securities" } } }, "localname": "GainOnSaleOfInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainsLossesOnSalesOfOtherRealEstate": { "auth_ref": [ "r551" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 4.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.", "label": "Gains (Losses) on Sales of Other Real Estate", "negatedTerseLabel": "Gain on sale of real estate owned", "terseLabel": "Gains (Losses) on Sales of Other Real Estate" } } }, "localname": "GainsLossesOnSalesOfOtherRealEstate", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail", "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_GeneralAndAdministrativeExpense": { "auth_ref": [ "r69" ], "calculation": { "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.", "label": "General and Administrative Expense", "negatedLabel": "Administration expense" } } }, "localname": "GeneralAndAdministrativeExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_Goodwill": { "auth_ref": [ "r229", "r231" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill", "periodEndLabel": "Goodwill, Ending Balance", "periodStartLabel": "Goodwill, Beginning Balance", "terseLabel": "Goodwill", "verboseLabel": "Goodwill recognized" } } }, "localname": "Goodwill", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofGoodwillIntangibleDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillAcquiredDuringPeriod": { "auth_ref": [ "r232" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.", "label": "Goodwill, Acquired During Period", "terseLabel": "Goodwill, Additions" } } }, "localname": "GoodwillAcquiredDuringPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofGoodwillIntangibleDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Goodwill and Intangible Assets Disclosure [Abstract]", "terseLabel": "Goodwill and Intangible Assets Disclosure [Abstract]" } } }, "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock": { "auth_ref": [ "r246" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for goodwill and intangible assets.", "label": "Goodwill and Intangible Assets Disclosure [Text Block]", "terseLabel": "Goodwill and Other Intangible Assets" } } }, "localname": "GoodwillAndIntangibleAssetsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssets" ], "xbrltype": "textBlockItemType" }, "us-gaap_GoodwillImpairmentLoss": { "auth_ref": [ "r95", "r230", "r233", "r236" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill, Impairment Loss", "verboseLabel": "Impairment charges" } } }, "localname": "GoodwillImpairmentLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillPurchaseAccountingAdjustments": { "auth_ref": [ "r234", "r402" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.", "label": "Goodwill, Purchase Accounting Adjustments", "terseLabel": "Loans" } } }, "localname": "GoodwillPurchaseAccountingAdjustments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecurities": { "auth_ref": [ "r195", "r207" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at amortized cost (held-to-maturity).", "label": "Debt Securities, Held-to-maturity", "terseLabel": "Held to maturity debt securities", "totalLabel": "Totals, Amortized Cost, Held to Maturity", "verboseLabel": "Securities held to maturity" } } }, "localname": "HeldToMaturitySecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain": { "auth_ref": [ "r209" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": 1.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).", "label": "Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain", "terseLabel": "Debt Securities Held to Maturity, Gross Unrealized Gains" } } }, "localname": "HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss": { "auth_ref": [ "r210" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": 2.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).", "label": "Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss", "negatedLabel": "Debt Securities Held to Maturity, Gross Unrealized Losses" } } }, "localname": "HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment": { "auth_ref": [], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before other-than-temporary impairment (OTTI) accretion, of investment in debt securities measured at amortized cost (held-to-maturity).", "label": "Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment", "totalLabel": "Debt Securities Held to Maturity, Amortized Cost" } } }, "localname": "HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [ "r217", "r220" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 2.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.", "label": "Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss", "negatedLabel": "Debt Securities Held to Maturity, 12 months or more, Unrealized Loss" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r217" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.", "label": "Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss", "negatedTotalLabel": "Debt Securities Held to Maturity, Unrealized Loss" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue": { "auth_ref": [ "r216" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.", "label": "Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value", "totalLabel": "Debt Securities Held to Maturity, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [ "r217", "r220" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 1.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.", "label": "Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss", "negatedLabel": "Debt Securities Held to Maturity, Less than 12 months, Unrealized Loss" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": { "auth_ref": [ "r220" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 1.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.", "label": "Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value", "terseLabel": "Debt Securities Held to Maturity, Less than 12 months, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": { "auth_ref": [ "r220" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail": { "order": 2.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.", "label": "Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value", "terseLabel": "Debt Securities Held to Maturity, 12 months or more, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r213", "r563" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 3.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value", "terseLabel": "Due after five years through ten years, Estimated Fair Value, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount": { "auth_ref": [ "r213", "r563" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 3.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost", "terseLabel": "Due after five years through ten years, Amortized Cost, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r212", "r562" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 2.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value", "terseLabel": "Due after one year through five years, Estimated Fair Value, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount": { "auth_ref": [ "r212", "r562" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 2.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost", "terseLabel": "Due after one year through five years, Amortized Cost, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r214", "r564" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 4.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value", "terseLabel": "Due after ten years, Estimated Fair Value, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount": { "auth_ref": [ "r214", "r564" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 4.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security, measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost", "terseLabel": "Due after ten years, Amortized Cost, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r211", "r561" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 1.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value", "terseLabel": "Due in one year, Estimated Fair Value, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount": { "auth_ref": [ "r211", "r561" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": 1.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.", "label": "Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost", "terseLabel": "Due in one year, Amortized Cost, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesFairValue": { "auth_ref": [ "r208" ], "calculation": { "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail": { "order": 3.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of investment in debt security measured at amortized cost (held-to-maturity).", "label": "Debt Securities, Held-to-maturity, Fair Value", "terseLabel": "Debt Securities Held to Maturity, Estimated Fair Value", "totalLabel": "Estimated Fair Value, Held to Maturity" } } }, "localname": "HeldToMaturitySecuritiesFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValueofDebtSecuritiesbyContractualMaturityDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_HomeEquityLoanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan based on the equity of the borrower's residential property in which the borrower receives the loan amount upfront. Excludes home equity lines of credit.", "label": "Home Equity Loan [Member]", "terseLabel": "Home equity loans" } } }, "localname": "HomeEquityLoanMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_HomeEquityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Revolving, open-end loan extended under a line of credit and secured by the borrower's residential property.", "label": "Home Equity Line of Credit [Member]", "terseLabel": "Home equity lines of credit" } } }, "localname": "HomeEquityMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ImpairedFinancingReceivableRecordedInvestment": { "auth_ref": [ "r161" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.", "label": "Impaired Financing Receivable, Recorded Investment", "totalLabel": "Total\u00a0recorded investment" } } }, "localname": "ImpairedFinancingReceivableRecordedInvestment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivableRelatedAllowance": { "auth_ref": [ "r162" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of allowance for credit losses related to recorded investment.", "label": "Impaired Financing Receivable, Related Allowance", "terseLabel": "Related allowance" } } }, "localname": "ImpairedFinancingReceivableRelatedAllowance", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance": { "auth_ref": [ "r163" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.", "label": "Impaired Financing Receivable, Unpaid Principal Balance", "terseLabel": "Unpaid principal balance" } } }, "localname": "ImpairedFinancingReceivableUnpaidPrincipalBalance", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment": { "auth_ref": [ "r161" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail": { "order": 1.0, "parentTag": "us-gaap_ImpairedFinancingReceivableRecordedInvestment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.", "label": "Impaired Financing Receivable, with No Related Allowance, Recorded Investment", "terseLabel": "Recorded investment\u00a0with no related allowance" } } }, "localname": "ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment": { "auth_ref": [ "r164", "r167" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.", "label": "Impaired Financing Receivable, with Related Allowance, Average Recorded Investment", "terseLabel": "Average recorded investment" } } }, "localname": "ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod": { "auth_ref": [ "r165" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.", "label": "Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method", "terseLabel": "Interest\u00a0income recognized" } } }, "localname": "ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment": { "auth_ref": [ "r161" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail": { "order": 2.0, "parentTag": "us-gaap_ImpairedFinancingReceivableRecordedInvestment", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.", "label": "Impaired Financing Receivable, with Related Allowance, Recorded Investment", "terseLabel": "Recorded investment\u00a0with related allowance" } } }, "localname": "ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ImpairedFinancingReceivablesTableTextBlock": { "auth_ref": [ "r166" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of impaired financing receivables.", "label": "Impaired Financing Receivables [Table Text Block]", "terseLabel": "Impaired Loans" } } }, "localname": "ImpairedFinancingReceivablesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": { "auth_ref": [ "r63", "r119", "r516", "r540", "r604" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.", "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest", "totalLabel": "Income before income taxes" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributionsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income (Loss) from Equity Method Investments, Net of Dividends or Distributions [Abstract]", "terseLabel": "Equity in net income of Tri Counties Bank:" } } }, "localname": "IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributionsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Statement [Abstract]", "terseLabel": "Income Statement [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxAuthorityAxis": { "auth_ref": [ "r383" ], "lang": { "en-US": { "role": { "documentation": "Information by tax jurisdiction.", "label": "Income Tax Authority [Axis]", "terseLabel": "Income Tax Authority [Axis]" } } }, "localname": "IncomeTaxAuthorityAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxAuthorityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.", "label": "Income Tax Authority [Domain]", "terseLabel": "Income Tax Authority [Domain]" } } }, "localname": "IncomeTaxAuthorityDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeTaxDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Tax Disclosure [Abstract]", "terseLabel": "Income Tax Disclosure [Abstract]" } } }, "localname": "IncomeTaxDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureTextBlock": { "auth_ref": [ "r400" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.", "label": "Income Tax Disclosure [Text Block]", "terseLabel": "Income Taxes" } } }, "localname": "IncomeTaxDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxes" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r108", "r147", "r398" ], "calculation": { "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": 4.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Income Tax Expense (Benefit)", "negatedLabel": "Income tax benefit", "terseLabel": "Income tax expense", "totalLabel": "Total tax expense", "verboseLabel": "Provision for income taxes" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/IncomeTaxesComponentsofConsolidatedIncomeTaxExpenseDetail", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxPolicyTextBlock": { "auth_ref": [ "r106", "r378", "r379", "r384", "r385", "r389", "r399", "r622" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.", "label": "Income Tax, Policy [Policy Text Block]", "terseLabel": "Income Taxes" } } }, "localname": "IncomeTaxPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxesPaidNet": { "auth_ref": [ "r100" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.", "label": "Income Taxes Paid, Net", "terseLabel": "Cash paid for income taxes" } } }, "localname": "IncomeTaxesPaidNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet": { "auth_ref": [ "r94" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in the amount due from borrowers for interest payments.", "label": "Increase (Decrease) in Accrued Interest Receivable, Net", "negatedLabel": "Interest receivable" } } }, "localname": "IncreaseDecreaseInAccruedInterestReceivableNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInDeposits": { "auth_ref": [ "r98", "r558" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances.", "label": "Increase (Decrease) in Deposits", "terseLabel": "Net change in deposits" } } }, "localname": "IncreaseDecreaseInDeposits", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInInsuranceLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Increase (Decrease) in Insurance Liabilities [Abstract]", "terseLabel": "Increase (Decrease) in Insurance Liabilities [Abstract]" } } }, "localname": "IncreaseDecreaseInInsuranceLiabilitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInInterestPayableNet": { "auth_ref": [ "r94" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity.", "label": "Increase (Decrease) in Interest Payable, Net", "terseLabel": "Interest payable" } } }, "localname": "IncreaseDecreaseInInterestPayableNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Increase (Decrease) in Operating Liabilities [Abstract]", "terseLabel": "Change in" } } }, "localname": "IncreaseDecreaseInOperatingLiabilitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet": { "auth_ref": [ "r94" ], "calculation": { "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.", "label": "Increase (Decrease) in Other Operating Assets and Liabilities, Net", "negatedLabel": "Net change in other assets and liabilities" } } }, "localname": "IncreaseDecreaseInOtherOperatingCapitalNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOtherOperatingLiabilities": { "auth_ref": [ "r94" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 15.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in operating liabilities classified as other.", "label": "Increase (Decrease) in Other Operating Liabilities", "terseLabel": "Other assets and liabilities, net" } } }, "localname": "IncreaseDecreaseInOtherOperatingLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements": { "auth_ref": [ "r126", "r131" ], "calculation": { "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail": { "order": 2.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.", "label": "Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements", "terseLabel": "Effect of dilutive stock options and restricted stock (in shares)" } } }, "localname": "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_InformationTechnologyAndDataProcessing": { "auth_ref": [ "r70" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 7.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of expenses incurred in the period for information technology and data processing products and services.", "label": "Information Technology and Data Processing", "terseLabel": "Data processing and software" } } }, "localname": "InformationTechnologyAndDataProcessing", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InsuredEventGainLoss": { "auth_ref": [ "r263" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event.", "label": "Insured Event, Gain (Loss)", "terseLabel": "Gain on death benefit" } } }, "localname": "InsuredEventGainLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsuranceSummaryofActivityinBalanceofCashValueofLifeInsuranceDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAndDividendIncomeOperating": { "auth_ref": [ "r544" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_InterestIncomeExpenseNet", "weight": 1.0 }, "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.", "label": "Interest and Dividend Income, Operating", "totalLabel": "Total interest and dividend income" } } }, "localname": "InterestAndDividendIncomeOperating", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAndDividendIncomeOperatingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Interest and Dividend Income, Operating [Abstract]", "terseLabel": "Interest and dividend income" } } }, "localname": "InterestAndDividendIncomeOperatingAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "stringItemType" }, "us-gaap_InterestAndDividendIncomeSecuritiesByTaxableStatusAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Interest and Dividend Income, Securities, by Taxable Status [Abstract]", "terseLabel": "Investments" } } }, "localname": "InterestAndDividendIncomeSecuritiesByTaxableStatusAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "stringItemType" }, "us-gaap_InterestAndFeeIncomeLoansAndLeases": { "auth_ref": [ "r543" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 }, "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail": { "order": 1.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.", "label": "Interest and Fee Income, Loans and Leases", "terseLabel": "Loans, including fees", "totalLabel": "Total loan interest income" } } }, "localname": "InterestAndFeeIncomeLoansAndLeases", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestBearingDepositLiabilities": { "auth_ref": [ "r529" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate of all domestic and foreign interest-bearing deposit liabilities.", "label": "Interest-bearing Deposit Liabilities", "terseLabel": "Interest-bearing" } } }, "localname": "InterestBearingDepositLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestBearingDomesticDepositDemand": { "auth_ref": [ "r529" ], "calculation": { "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail": { "order": 2.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of money in interest-bearing domestic accounts that entitle the depositor to withdraw funds at any time without prior notice, also known as demand deposits.", "label": "Interest-bearing Domestic Deposit, Demand", "terseLabel": "Interest-bearing demand" } } }, "localname": "InterestBearingDomesticDepositDemand", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpense": { "auth_ref": [ "r62", "r146", "r459", "r462", "r557" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_InterestIncomeExpenseNet", "weight": -1.0 }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.", "label": "Interest Expense", "negatedLabel": "Interest expense", "terseLabel": "Interest expense", "totalLabel": "Total interest expense" } } }, "localname": "InterestExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Interest Expense [Abstract]", "terseLabel": "Interest expense" } } }, "localname": "InterestExpenseAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "stringItemType" }, "us-gaap_InterestExpenseDeposits": { "auth_ref": [ "r555" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_InterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Aggregate amount of interest expense on all deposits.", "label": "Interest Expense, Deposits", "terseLabel": "Deposits" } } }, "localname": "InterestExpenseDeposits", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseJuniorSubordinatedDebentures": { "auth_ref": [ "r556" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 3.0, "parentTag": "us-gaap_InterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Interest expense incurred during the reporting period on junior subordinated debentures. Includes amortization of expenses incurred in the issuance of subordinated notes and debentures.", "label": "Interest Expense, Junior Subordinated Debentures", "terseLabel": "Junior subordinated debt" } } }, "localname": "InterestExpenseJuniorSubordinatedDebentures", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseOtherLongTermDebt": { "auth_ref": [ "r556" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_InterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of interest expense incurred on long-term debt classified as other, including, but not limited to, interest on long-term notes and amortization of issuance costs.", "label": "Interest Expense, Other Long-term Debt", "terseLabel": "Other borrowings" } } }, "localname": "InterestExpenseOtherLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss": { "auth_ref": [ "r546" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.", "label": "Interest Income (Expense), after Provision for Loan Loss", "totalLabel": "Net interest income after provision for (benefit from) loan losses" } } }, "localname": "InterestIncomeExpenseAfterProvisionForLoanLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeExpenseNet": { "auth_ref": [ "r545" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net amount of operating interest income (expense).", "label": "Interest Income (Expense), Net", "terseLabel": "Net interest income", "totalLabel": "Net interest income" } } }, "localname": "InterestIncomeExpenseNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell": { "auth_ref": [ "r554" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 5.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate interest income earned from (1) the lending of excess federal funds to another commercial bank requiring such for its legal reserve requirements and (2) securities purchased under agreements to resell.", "label": "Interest Income, Federal Funds Sold and Securities Purchased under Agreements to Resell", "terseLabel": "Interest bearing cash at Federal Reserve and other banks" } } }, "localname": "InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeSecuritiesTaxExempt": { "auth_ref": [ "r553" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 3.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of operating interest income, including amortization and accretion of premiums and discounts, on securities exempt from state, federal and other income tax.", "label": "Interest Income, Securities, Operating, Tax Exempt", "terseLabel": "Tax exempt securities" } } }, "localname": "InterestIncomeSecuritiesTaxExempt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeSecuritiesTaxable": { "auth_ref": [ "r553" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of operating interest income, including amortization and accretion of premiums and discounts, on securities subject to state, federal and other income tax.", "label": "Interest Income, Securities, Operating, Taxable", "terseLabel": "Taxable securities" } } }, "localname": "InterestIncomeSecuritiesTaxable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPaidNet": { "auth_ref": [ "r85", "r91", "r100" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.", "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities", "terseLabel": "Cash paid for interest expense" } } }, "localname": "InterestPaidNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPayableCurrentAndNoncurrent": { "auth_ref": [ "r532", "r599" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest payable on debt, including, but not limited to, trade payables.", "label": "Interest Payable", "terseLabel": "Accrued interest payable" } } }, "localname": "InterestPayableCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_InternalCreditAssessmentAxis": { "auth_ref": [ "r169", "r269", "r437" ], "lang": { "en-US": { "role": { "documentation": "Information by entity-defined rating.", "label": "Internal Credit Assessment [Axis]", "terseLabel": "Internal Credit Assessment [Axis]" } } }, "localname": "InternalCreditAssessmentAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_InternalCreditAssessmentDomain": { "auth_ref": [ "r169", "r268", "r436" ], "lang": { "en-US": { "role": { "documentation": "Entity defined credit risk rating.", "label": "Internal Credit Assessment [Domain]", "terseLabel": "Internal Credit Assessment [Domain]" } } }, "localname": "InternalCreditAssessmentDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentHoldingsScheduleOfInvestmentsTextBlock": { "auth_ref": [ "r615" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for investment holdings. This includes the information required in the supplementary schedule applicable to management investment companies listing holdings of unaffiliated investments.", "label": "Investment Holdings, Schedule of Investments [Text Block]", "terseLabel": "Investment Securities" } } }, "localname": "InvestmentHoldingsScheduleOfInvestmentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecurities" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r611", "r612", "r613", "r614" ], "lang": { "en-US": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type [Axis]" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r611", "r612", "r613", "r614" ], "lang": { "en-US": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investments [Domain]", "terseLabel": "Investments [Domain]" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.", "label": "Investments Classified by Contractual Maturity Date [Table Text Block]", "terseLabel": "Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity" } } }, "localname": "InvestmentsClassifiedByContractualMaturityDateTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investments, Debt and Equity Securities [Abstract]", "terseLabel": "Investment securities" } } }, "localname": "InvestmentsDebtAndEquitySecuritiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures": { "auth_ref": [ "r25" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of investment in equity method investee and investment in and advance to affiliate.", "label": "Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures", "terseLabel": "Investment in Tri Counties Bank" } } }, "localname": "InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_JuniorSubordinatedNotes": { "auth_ref": [ "r10", "r524", "r586" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.", "label": "Junior Subordinated Notes", "terseLabel": "Junior subordinated debt", "verboseLabel": "Recorded Book Value" } } }, "localname": "JuniorSubordinatedNotes", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LaborAndRelatedExpense": { "auth_ref": [ "r66" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.", "label": "Labor and Related Expense", "terseLabel": "Salaries and related benefits", "totalLabel": "Total salaries and benefits expense" } } }, "localname": "LaborAndRelatedExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LandAndBuildingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Real estate held for productive use and structures used in the conduct of business, including but not limited to, office, production, storage and distribution facilities.", "label": "Land and Building [Member]", "terseLabel": "Land Improvements and Buildings" } } }, "localname": "LandAndBuildingMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_LandAndLandImprovements": { "auth_ref": [ "r3", "r38" ], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 1.0, "parentTag": "us-gaap_PropertyPlantAndEquipmentGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale.", "label": "Land and Land Improvements", "terseLabel": "Land\u00a0and land improvements" } } }, "localname": "LandAndLandImprovements", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeaseAndRentalExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.", "label": "Operating Leases, Rent Expense", "terseLabel": "Rent expense under operating leases" } } }, "localname": "LeaseAndRentalExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail", "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeaseCost": { "auth_ref": [ "r476", "r478" ], "calculation": { "http://tcbk.com/role/ComponentsofLeaseExpenseDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of lease cost recognized by lessee for lease contract.", "label": "Lease, Cost", "totalLabel": "Total lease cost" } } }, "localname": "LeaseCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeaseCostTableTextBlock": { "auth_ref": [ "r476" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.", "label": "Lease, Cost [Table Text Block]", "terseLabel": "Components of Lease Expense", "verboseLabel": "Supplemental Cash Flow Information" } } }, "localname": "LeaseCostTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LeasesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_LeasesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Leases [Abstract]", "terseLabel": "Leases [Abstract]" } } }, "localname": "LeasesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock": { "auth_ref": [ "r477" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.", "label": "Lessee, Operating Lease, Liability, Maturity [Table Text Block]", "terseLabel": "Expected Future Operating Lease Payments" } } }, "localname": "LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LeasesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails_1": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease.", "label": "Lessee, Operating Lease, Liability, Payments, Due", "totalLabel": "Total" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": 6.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.", "label": "Lessee, Operating Lease, Liability, Payments, Due after Year Five", "terseLabel": "Thereafter" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": 1.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.", "label": "Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months", "terseLabel": "2020" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": 3.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.", "label": "Lessee, Operating Lease, Liability, Payments, Due Year Five", "terseLabel": "2024" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": 2.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.", "label": "Lessee, Operating Lease, Liability, Payments, Due Year Four", "terseLabel": "2023" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFour", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": 5.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.", "label": "Lessee, Operating Lease, Liability, Payments, Due Year Three", "terseLabel": "2022" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearThree", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails": { "order": 4.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.", "label": "Lessee, Operating Lease, Liability, Payments, Due Year Two", "terseLabel": "2021" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": { "auth_ref": [ "r477" ], "calculation": { "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails_1": { "order": 1.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.", "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount", "negatedLabel": "Discount for present value of expected cash flows" } } }, "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeasesTextBlock": { "auth_ref": [ "r479" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability.", "label": "Lessee, Operating Leases [Text Block]", "terseLabel": "Leases" } } }, "localname": "LesseeOperatingLeasesTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/Leases" ], "xbrltype": "textBlockItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r30" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.", "label": "Liabilities", "totalLabel": "Total liabilities" } } }, "localname": "Liabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities [Abstract]", "terseLabel": "Liabilities" } } }, "localname": "LiabilitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r22", "r526", "r594" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.", "label": "Liabilities and Equity", "totalLabel": "Total liabilities and shareholders\u2019 equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities and Equity [Abstract]", "terseLabel": "Liabilities and shareholders' equity", "verboseLabel": "Liabilities and Shareholders' Equity" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_LifeInsuranceCorporateOrBankOwnedTextBlock": { "auth_ref": [ "r228" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for corporate (COLI) or bank (BOLI) owned life insurance including the amount of cash surrender value that could be received as of the date of the statement of financial position, any restrictions on the company's ability to obtain the value of the life insurance policy on surrender, or any other additional information desired to be disclosed.", "label": "Life Insurance, Corporate or Bank Owned [Text Block]", "terseLabel": "Cash Value of Life Insurance" } } }, "localname": "LifeInsuranceCorporateOrBankOwnedTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CashValueofLifeInsurance" ], "xbrltype": "textBlockItemType" }, "us-gaap_LoansAndLeasesReceivableAllowance": { "auth_ref": [ "r156", "r159", "r183", "r190", "r536" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LoansAndLeasesReceivableNetReportedAmount", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.", "label": "Loans and Leases Receivable, Allowance", "negatedLabel": "Allowance for loan losses", "periodEndLabel": "Ending\u00a0Balance", "periodStartLabel": "Beginning Balance", "terseLabel": "Allowance of loan losses", "totalLabel": "Total\u00a0allowance for loan losses" } } }, "localname": "LoansAndLeasesReceivableAllowance", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicy": { "auth_ref": [ "r106", "r180" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for estimating the allowance for losses on loans and lease receivables. The disclosure may include (a) how the entity determines each element of the allowance, (b) which loans are evaluated individually and which loans are evaluated as a group, (c) how the entity determines both the allocated and unallocated portions of the allowance, (d) how the entity determines the loss factors applied to graded loans in order to develop a general allowance, and (e) what self-correcting mechanism the entity uses to reduce differences between estimated and actual losses.", "label": "Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]", "terseLabel": "Loans and Allowance for Loan Losses" } } }, "localname": "LoansAndLeasesReceivableAllowanceForLoanLossesPolicy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_LoansAndLeasesReceivableBeforeFeesGross": { "auth_ref": [ "r152" ], "calculation": { "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail": { "order": 1.0, "parentTag": "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.", "label": "Loans and Leases Receivable, before Fees, Gross", "terseLabel": "Total principal balance of loans owed, net of charge-offs" } } }, "localname": "LoansAndLeasesReceivableBeforeFeesGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableDeferredIncome": { "auth_ref": [ "r174", "r187", "r465", "r538" ], "calculation": { "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail": { "order": 2.0, "parentTag": "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.", "label": "Loans and Leases Receivable, Deferred Income", "negatedLabel": "Unamortized net deferred loan fees" } } }, "localname": "LoansAndLeasesReceivableDeferredIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableDisclosureLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Loans and Leases Receivable Disclosure [Line Items]", "terseLabel": "Loans and Leases Receivable Disclosure [Line Items]" } } }, "localname": "LoansAndLeasesReceivableDisclosureLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_LoansAndLeasesReceivableDisclosureTable": { "auth_ref": [ "r152" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about loans and leases receivable.", "label": "Loans and Leases Receivable Disclosure [Table]", "terseLabel": "Loans and Leases Receivable Disclosure [Table]" } } }, "localname": "LoansAndLeasesReceivableDisclosureTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount": { "auth_ref": [ "r152" ], "calculation": { "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_LoansAndLeasesReceivableNetReportedAmount", "weight": 1.0 }, "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.", "label": "Loans and Leases Receivable, Gross", "terseLabel": "Loans", "totalLabel": "Total", "verboseLabel": "Total loans, net of unamortized deferred loan fees and discounts" } } }, "localname": "LoansAndLeasesReceivableGrossCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans": { "auth_ref": [ "r192" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).", "label": "Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans", "terseLabel": "Interest income on non accrual loans" } } }, "localname": "LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableMortgageBankingActivitiesPolicy": { "auth_ref": [ "r106", "r618" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for the lending, securitization, sales, transfers and servicing practices for mortgage banking activities.", "label": "Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block]", "terseLabel": "Mortgage Servicing Rights" } } }, "localname": "LoansAndLeasesReceivableMortgageBankingActivitiesPolicy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_LoansAndLeasesReceivableNetReportedAmount": { "auth_ref": [ "r152", "r538" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 4.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.", "label": "Loans and Leases Receivable, Net Amount", "totalLabel": "Total loans, net" } } }, "localname": "LoansAndLeasesReceivableNetReportedAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableRelatedParties": { "auth_ref": [ "r480", "r537" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.", "label": "Loans and Leases Receivable, Related Parties", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance" } } }, "localname": "LoansAndLeasesReceivableRelatedParties", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableRelatedPartiesAdditions": { "auth_ref": [ "r480", "r537" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Reflects the amount of new advances made to related parties in the form of loan and lease receivables.", "label": "Loans and Leases Receivable, Related Parties, Additions", "terseLabel": "Advances/new loans" } } }, "localname": "LoansAndLeasesReceivableRelatedPartiesAdditions", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableRelatedPartiesProceeds": { "auth_ref": [ "r74", "r527" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties.", "label": "Loans and Leases Receivable, Related Parties, Proceeds", "negatedLabel": "Removed/payments" } } }, "localname": "LoansAndLeasesReceivableRelatedPartiesProceeds", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansMember": { "auth_ref": [ "r184" ], "lang": { "en-US": { "role": { "documentation": "When a lender gives money or property over other debt securities sold by the issuer. In the event the issuer goes bankrupt, senior debt holders receive priority for [must receive] repayment [prior] relative to junior and unsecured (general) creditors.", "label": "Loans [Member]", "terseLabel": "Loans" } } }, "localname": "LoansMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock": { "auth_ref": [ "r18", "r23", "r154", "r170", "r174", "r528", "r596", "r608" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.", "label": "Loans, Notes, Trade and Other Receivables Disclosure [Text Block]", "terseLabel": "Loans" } } }, "localname": "LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/Loans" ], "xbrltype": "textBlockItemType" }, "us-gaap_LoansReceivableFairValueDisclosure": { "auth_ref": [ "r184" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.", "label": "Loans Receivable, Fair Value Disclosure", "terseLabel": "Loans, net" } } }, "localname": "LoansReceivableFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup": { "auth_ref": [ "r152" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 8.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.", "label": "Loans Receivable Held-for-sale, Net, Not Part of Disposal Group", "terseLabel": "Loans held for sale" } } }, "localname": "LoansReceivableHeldForSaleNetNotPartOfDisposalGroup", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_LondonInterbankOfferedRateLIBORMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Interest rate at which a bank borrows funds from other banks in the London interbank market.", "label": "London Interbank Offered Rate (LIBOR) [Member]", "terseLabel": "LIBOR PLUS" } } }, "localname": "LondonInterbankOfferedRateLIBORMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "us-gaap_LongtermDebtTypeAxis": { "auth_ref": [ "r33" ], "lang": { "en-US": { "role": { "documentation": "Information by type of long-term debt.", "label": "Long-term Debt, Type [Axis]", "terseLabel": "Long-term Debt, Type [Axis]" } } }, "localname": "LongtermDebtTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_LongtermDebtTypeDomain": { "auth_ref": [ "r33", "r273" ], "lang": { "en-US": { "role": { "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.", "label": "Long-term Debt, Type [Domain]", "terseLabel": "Long-term Debt, Type [Domain]" } } }, "localname": "LongtermDebtTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_LossContingenciesByNatureOfContingencyAxis": { "auth_ref": [ "r256", "r257", "r258", "r259", "r260", "r261", "r262", "r266", "r267" ], "lang": { "en-US": { "role": { "documentation": "Information by type of existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur.", "label": "Loss Contingency Nature [Axis]", "terseLabel": "Loss Contingency Nature [Axis]" } } }, "localname": "LossContingenciesByNatureOfContingencyAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_LossContingencyNatureDomain": { "auth_ref": [ "r256", "r257", "r258", "r259", "r260", "r261", "r262", "r266", "r267" ], "lang": { "en-US": { "role": { "documentation": "An existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur. Resolution of the uncertainty may confirm the incurrence of a loss or impairment of an asset or the incurrence of a liability.", "label": "Loss Contingency, Nature [Domain]", "terseLabel": "Loss Contingency, Nature [Domain]" } } }, "localname": "LossContingencyNatureDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MarketApproachValuationTechniqueMember": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Valuation approach using price and other relevant information generated by market transaction involving identical or comparable asset, liability, or group of assets and liabilities.", "label": "Valuation, Market Approach [Member]", "terseLabel": "Sales Comparison Approach" } } }, "localname": "MarketApproachValuationTechniqueMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MarketableSecuritiesGainLoss": { "auth_ref": [], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 2.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).", "label": "Marketable Securities, Gain (Loss)", "terseLabel": "Gain (loss) on marketable equity securities" } } }, "localname": "MarketableSecuritiesGainLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_MeasurementInputComparabilityAdjustmentMember": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Measurement input using adjustment to observed price for similar asset or liability when identical transaction does not exist.", "label": "Measurement Input, Comparability Adjustment [Member]", "terseLabel": "Adjustment for differences between comparable sales" } } }, "localname": "MeasurementInputComparabilityAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputConstantPrepaymentRateMember": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Measurement input using principal prepayment as proportion of outstanding loan principal at constant rate.", "label": "Measurement Input, Constant Prepayment Rate [Member]", "terseLabel": "Constant prepayment\u00a0rate" } } }, "localname": "MeasurementInputConstantPrepaymentRateMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputDiscountRateMember": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Measurement input using interest rate to determine present value of future cash flows.", "label": "Measurement Input, Discount Rate [Member]", "terseLabel": "Discount rate" } } }, "localname": "MeasurementInputDiscountRateMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputTypeAxis": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Information by type of measurement input used to determine value of asset and liability.", "label": "Measurement Input Type [Axis]", "terseLabel": "Measurement Input Type [Axis]" } } }, "localname": "MeasurementInputTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_MeasurementInputTypeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Measurement input used to determine value of asset and liability.", "label": "Measurement Input Type [Domain]", "terseLabel": "Measurement Input Type [Domain]" } } }, "localname": "MeasurementInputTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MortgageBankingMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Origination or servicing of loan secured by real property.", "label": "Mortgage Banking [Member]", "terseLabel": "Mortgage banking service fees" } } }, "localname": "MortgageBankingMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "domainItemType" }, "us-gaap_MortgageLoansInProcessOfForeclosureAmount": { "auth_ref": [ "r173" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.", "label": "Mortgage Loans in Process of Foreclosure, Amount", "terseLabel": "Formal foreclosure proceedings" } } }, "localname": "MortgageLoansInProcessOfForeclosureAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_MortgagesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A loan to finance the purchase of real estate where the lender has a lien on the property as collateral for the loan.", "label": "Mortgages [Member]", "terseLabel": "Real estate mortgage loans" } } }, "localname": "MortgagesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r89" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.", "label": "Net Cash Provided by (Used in) Financing Activities", "totalLabel": "Net cash from financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]", "terseLabel": "Financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r89" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.", "label": "Net Cash Provided by (Used in) Investing Activities", "totalLabel": "Net cash from investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]", "terseLabel": "Investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r89", "r93", "r96" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "weight": 1.0 }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.", "label": "Net Cash Provided by (Used in) Operating Activities", "totalLabel": "Net cash from operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]", "terseLabel": "Operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r54", "r57", "r64", "r96", "r131", "r541", "r600" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome": { "order": 1.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.", "label": "Net Income (Loss) Attributable to Parent", "terseLabel": "Net income", "totalLabel": "Net income" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1": { "auth_ref": [ "r117", "r120", "r121" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.", "label": "New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets", "terseLabel": "New accounting pronouncement or change in accounting principle cumulative effect of change on equity or net assets" } } }, "localname": "NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.", "label": "New Accounting Pronouncements, Policy [Policy Text Block]", "terseLabel": "Accounting Standards Adopted in 2019" } } }, "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_NoncashMergerRelatedCosts": { "auth_ref": [ "r95" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 12.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense (income) related to the increase (decrease) in reserve for business combination costs. Includes, but is not limited to, legal, accounting, and other costs incurred to consummate the merger.", "label": "Noncash Merger Related Costs", "terseLabel": "Merger and acquisition expense" } } }, "localname": "NoncashMergerRelatedCosts", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoninterestBearingDepositLiabilities": { "auth_ref": [ "r529" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 }, "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail": { "order": 1.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.", "label": "Noninterest-bearing Deposit Liabilities", "terseLabel": "Noninterest-bearing demand" } } }, "localname": "NoninterestBearingDepositLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoninterestExpense": { "auth_ref": [ "r552" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 3.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Total aggregate amount of all noninterest expense.", "label": "Noninterest Expense", "terseLabel": "Noninterest expense", "totalLabel": "Total noninterest expense", "verboseLabel": "Total noninterest expense" } } }, "localname": "NoninterestExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoninterestExpenseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Noninterest Expense [Abstract]", "terseLabel": "Noninterest expense" } } }, "localname": "NoninterestExpenseAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "stringItemType" }, "us-gaap_NoninterestIncome": { "auth_ref": [ "r549" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 2.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.", "label": "Noninterest Income", "terseLabel": "Noninterest income", "totalLabel": "Total noninterest income" } } }, "localname": "NoninterestIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail", "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsUnauditedResultsofOperationsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoninterestIncomeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Noninterest Income [Abstract]", "terseLabel": "Noninterest income" } } }, "localname": "NoninterestIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "stringItemType" }, "us-gaap_NoninterestIncomeOther": { "auth_ref": [ "r549" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 4.0, "parentTag": "tcbk_NoninterestIncomeExcludingServiceChargesAndFees", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Represents the total of noninterest income derived from certain activities and assets including (for example): (1) venture capital investments; (2) bank owned life insurance; (3) foreign currency transactions; and (4) mortgage servicing rights.", "label": "Noninterest Income, Other", "verboseLabel": "Other" } } }, "localname": "NoninterestIncomeOther", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoninterestIncomeOtherOperatingIncome": { "auth_ref": [ "r61", "r539", "r603" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 6.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of revenue earned, classified as other, excluding interest income.", "label": "Noninterest Income, Other Operating Income", "terseLabel": "Other" } } }, "localname": "NoninterestIncomeOtherOperatingIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome" ], "xbrltype": "monetaryItemType" }, "us-gaap_NumberOfOperatingSegments": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.", "label": "Number of Operating Segments", "terseLabel": "Number of business segment" } } }, "localname": "NumberOfOperatingSegments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "integerItemType" }, "us-gaap_OccupancyNet": { "auth_ref": [ "r70", "r464", "r550" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 14.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.", "label": "Occupancy, Net", "terseLabel": "Occupancy" } } }, "localname": "OccupancyNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OffBalanceSheetCreditExposurePolicyPolicyTextBlock": { "auth_ref": [ "r106", "r180" ], "lang": { "en-US": { "role": { "documentation": "Description of accounting policies and methodologies used to estimate the entity's liability for off-balance sheet credit exposures and related charges for those credit exposures.", "label": "Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block]", "terseLabel": "Off-Balance Sheet Credit Related Financial Instruments" } } }, "localname": "OffBalanceSheetCreditExposurePolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_OperatingLeaseCost": { "auth_ref": [ "r468", "r478" ], "calculation": { "http://tcbk.com/role/ComponentsofLeaseExpenseDetails": { "order": 3.0, "parentTag": "us-gaap_LeaseCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.", "label": "Operating Lease, Cost", "terseLabel": "Operating lease cost" } } }, "localname": "OperatingLeaseCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiability": { "auth_ref": [ "r466" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 5.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 }, "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails_1": { "order": 2.0, "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.", "label": "Operating Lease, Liability", "terseLabel": "Operating lease liability", "verboseLabel": "Lease liability at December 31, 2019" } } }, "localname": "OperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/FutureExpectedOperatingLeasePaymentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeasePayments": { "auth_ref": [ "r467", "r472" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 23.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.", "label": "Operating Lease, Payments", "negatedLabel": "Operating lease payments", "terseLabel": "Operating cash flows for operating leases" } } }, "localname": "OperatingLeasePayments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/SupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": { "auth_ref": [ "r475", "r478" ], "lang": { "en-US": { "role": { "documentation": "Weighted average discount rate for operating lease calculated at point in time.", "label": "Operating Lease, Weighted Average Discount Rate, Percent", "terseLabel": "Weighted-average discount rate" } } }, "localname": "OperatingLeaseWeightedAverageDiscountRatePercent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LeaseTermandDiscountRateDetails" ], "xbrltype": "percentItemType" }, "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1": { "auth_ref": [ "r474", "r478" ], "lang": { "en-US": { "role": { "documentation": "Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Operating Lease, Weighted Average Remaining Lease Term", "terseLabel": "Weighted-average remaining lease term" } } }, "localname": "OperatingLeaseWeightedAverageRemainingLeaseTerm1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LeaseTermandDiscountRateDetails" ], "xbrltype": "durationItemType" }, "us-gaap_OperatingLossCarryforwards": { "auth_ref": [ "r390" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.", "label": "Operating Loss Carryforwards", "terseLabel": "Net operating loss carryforwards" } } }, "localname": "OperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherAssets": { "auth_ref": [ "r7", "r519", "r589" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 10.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of assets classified as other.", "label": "Other Assets", "terseLabel": "Other assets" } } }, "localname": "OtherAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherBorrowings": { "auth_ref": [ "r531" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.", "label": "Other Borrowings", "terseLabel": "Other borrowings", "verboseLabel": "Total other borrowings" } } }, "localname": "OtherBorrowings", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax [Abstract]", "terseLabel": "Amounts reclassified out of accumulated other comprehensive income:" } } }, "localname": "OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentBeforeTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax": { "auth_ref": [ "r47", "r51", "r52", "r316" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax", "terseLabel": "Amortization of prior service cost" } } }, "localname": "OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax": { "auth_ref": [ "r40" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.", "label": "Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax", "terseLabel": "Unrealized holding gains (losses) on available for sale securities after reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax": { "auth_ref": [ "r40" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 }, "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.", "label": "Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax", "terseLabel": "Increase (decrease) in unrealized gains on available for sale securities arising during the period", "totalLabel": "Unrealized holding gains (losses) on available for sale securities, net of tax", "verboseLabel": "Unrealized gains (losses) on available for sale securities arising during the period, after reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax": { "auth_ref": [ "r40", "r48" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.", "label": "Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax", "negatedLabel": "Tax effect" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r55", "r58", "r60", "r278" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome": { "order": 2.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income (Loss), Net of Tax", "terseLabel": "Other comprehensive income (loss)", "totalLabel": "Other comprehensive income (loss)" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]", "terseLabel": "Other comprehensive income (loss), net of tax:", "verboseLabel": "Other comprehensive income (loss), net of tax:" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent": { "auth_ref": [ "r55", "r58", "r421", "r422", "r425" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of other comprehensive income (loss) attributable to parent entity.", "label": "Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent", "terseLabel": "Other comprehensive income (loss)" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax": { "auth_ref": [ "r44", "r47" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax", "negatedLabel": "Change in unfunded status of the supplemental retirement plans before reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax": { "auth_ref": [ "r44", "r47" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 1.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax", "negatedTotalLabel": "Change in unfunded status of the supplemental retirement plans after reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax": { "auth_ref": [ "r44", "r47" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 }, "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax", "negatedLabel": "Change in minimum pension liability", "negatedTerseLabel": "Change in minimum pension liability, after reclassifications", "negatedTotalLabel": "Change in unfunded status of the supplemental retirement plans, net of tax" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofComprehensiveIncome", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofComprehensiveIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax": { "auth_ref": [ "r44", "r48", "r421" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax", "terseLabel": "Tax effect" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax": { "auth_ref": [ "r47", "r51", "r52", "r224" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.", "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax", "terseLabel": "Total amounts reclassified out of accumulated other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax": { "auth_ref": [ "r47", "r51", "r52" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net period benefit cost (credit) of defined benefit plan.", "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax", "totalLabel": "Total amounts reclassified out of accumulated other comprehensive income" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTaxAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax [Abstract]", "terseLabel": "Amounts reclassified out of accumulated other comprehensive income:" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax": { "auth_ref": [ "r47", "r51", "r52", "r316" ], "calculation": { "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail": { "order": 2.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.", "label": "Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax", "negatedLabel": "Amortization of actuarial losses" } } }, "localname": "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax": { "auth_ref": [ "r40", "r47", "r224" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.", "label": "Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax", "terseLabel": "Unrealized holding gains (losses) on available for sale securities before reclassifications" } } }, "localname": "OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherIncomeAndExpensesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Income and Expenses [Abstract]", "terseLabel": "Other Income and Expenses [Abstract]" } } }, "localname": "OtherIncomeAndExpensesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock": { "auth_ref": [ "r292", "r375" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions.", "label": "Other Income and Other Expense Disclosure [Text Block]", "terseLabel": "Noninterest Income and Expense" } } }, "localname": "OtherIncomeAndOtherExpenseDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpense" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherLiabilities": { "auth_ref": [ "r533" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 6.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of liabilities classified as other.", "label": "Other Liabilities", "terseLabel": "Other liabilities" } } }, "localname": "OtherLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherNoninterestExpense": { "auth_ref": [ "r552" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 6.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of noninterest expense classified as other.", "label": "Other Noninterest Expense", "verboseLabel": "Other miscellaneous expense" } } }, "localname": "OtherNoninterestExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherRealEstateDisposals": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Disposals of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.", "label": "Other Real Estate, Disposals", "negatedLabel": "Dispositions/sales" } } }, "localname": "OtherRealEstateDisposals", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherRealEstateValuationAdjustments": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Valuation adjustments made to other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.", "label": "Other Real Estate, Valuation Adjustments", "negatedLabel": "Valuation adjustments" } } }, "localname": "OtherRealEstateValuationAdjustments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherSecuredFinancings": { "auth_ref": [ "r429" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Secured financing other than securities sold under agreements to repurchase and securities loaned.", "label": "Other Secured Financings", "terseLabel": "Other Secured Financings", "verboseLabel": "Other collateralized borrowings" } } }, "localname": "OtherSecuredFinancings", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/OtherBorrowingsAdditionalInformationDetail", "http://tcbk.com/role/OtherBorrowingsSummaryofBalancesofOtherBorrowingsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.", "label": "Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net", "terseLabel": "Recognized OTTI losses" } } }, "localname": "OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PassMember": { "auth_ref": [ "r169" ], "lang": { "en-US": { "role": { "documentation": "A category of financing receivables not considered to be special mention, substandard, doubtful, and loss receivables.", "label": "Pass [Member]", "terseLabel": "Pass" } } }, "localname": "PassMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_PastDueFinancingReceivablesTableTextBlock": { "auth_ref": [ "r178", "r179" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status.", "label": "Past Due Financing Receivables [Table Text Block]", "terseLabel": "Analysis of Past Due Loans" } } }, "localname": "PastDueFinancingReceivablesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_PaymentsForOriginationOfMortgageLoansHeldForSale": { "auth_ref": [ "r92" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 16.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of cash paid for the origination of mortgages that are held for sale.", "label": "Payments for Origination of Mortgage Loans Held-for-sale", "negatedLabel": "Originations of loans for resale" } } }, "localname": "PaymentsForOriginationOfMortgageLoansHeldForSale", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForRepurchaseOfCommonStock": { "auth_ref": [ "r83" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow to reacquire common stock during the period.", "label": "Payments for Repurchase of Common Stock", "negatedLabel": "Repurchase of common stock, net" } } }, "localname": "PaymentsForRepurchaseOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividendsCommonStock": { "auth_ref": [ "r83" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.", "label": "Payments of Ordinary Dividends, Common Stock", "negatedLabel": "Cash dividends paid \u2014 common", "negatedTerseLabel": "Dividends paid" } } }, "localname": "PaymentsOfDividendsCommonStock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecurities": { "auth_ref": [ "r79", "r196" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 9.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.", "label": "Payments to Acquire Available-for-sale Securities", "negatedLabel": "Purchases of securities available for sale" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireBusinessesGross": { "auth_ref": [ "r80", "r416" ], "calculation": { "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail": { "order": 2.0, "parentTag": "us-gaap_BusinessCombinationConsiderationTransferred1", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.", "label": "Payments to Acquire Businesses, Gross", "terseLabel": "Cash consideration" } } }, "localname": "PaymentsToAcquireBusinessesGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r81" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.", "label": "Payments to Acquire Property, Plant, and Equipment", "negatedLabel": "Purchases of premises and equipment" } } }, "localname": "PaymentsToAcquirePropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": { "auth_ref": [ "r335" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for pension and other postretirement benefits.", "label": "Pension and Other Postretirement Benefits Disclosure [Text Block]", "terseLabel": "Retirement Plans" } } }, "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlans" ], "xbrltype": "textBlockItemType" }, "us-gaap_PlanNameAxis": { "auth_ref": [ "r338", "r357" ], "lang": { "en-US": { "role": { "documentation": "Information by plan name pertaining to equity-based compensation arrangements.", "label": "Plan Name [Axis]", "terseLabel": "Plan Name [Axis]" } } }, "localname": "PlanNameAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_PlanNameDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the equity-based compensation arrangement plan.", "label": "Plan Name [Domain]", "terseLabel": "Plan Name [Domain]" } } }, "localname": "PlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_PortionAtFairValueFairValueDisclosureMember": { "auth_ref": [ "r453" ], "lang": { "en-US": { "role": { "documentation": "Measured at fair value for financial reporting purposes.", "label": "Portion at Fair Value Measurement [Member]", "terseLabel": "Portion at Fair Value Measurement" } } }, "localname": "PortionAtFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_PostageExpense": { "auth_ref": [ "r552" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 3.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense associated with postage.", "label": "Postage Expense", "terseLabel": "Postage" } } }, "localname": "PostageExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PreferredStockNoParValue": { "auth_ref": [ "r16" ], "lang": { "en-US": { "role": { "documentation": "Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.", "label": "Preferred Stock, No Par Value", "terseLabel": "Preferred stock, no par value (in dollars per share)" } } }, "localname": "PreferredStockNoParValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockParOrStatedValuePerShare": { "auth_ref": [ "r16" ], "lang": { "en-US": { "role": { "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.", "label": "Preferred Stock, Par or Stated Value Per Share", "terseLabel": "Preferred stock, par value (in dollars per share)" } } }, "localname": "PreferredStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockSharesAuthorized": { "auth_ref": [ "r16" ], "lang": { "en-US": { "role": { "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.", "label": "Preferred Stock, Shares Authorized", "terseLabel": "Preferred stock, shares authorized (in shares)" } } }, "localname": "PreferredStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesIssued": { "auth_ref": [ "r16" ], "lang": { "en-US": { "role": { "documentation": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.", "label": "Preferred Stock, Shares Issued", "terseLabel": "Preferred stock, shares issued (in shares)" } } }, "localname": "PreferredStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesOutstanding": { "auth_ref": [ "r16" ], "lang": { "en-US": { "role": { "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.", "label": "Preferred Stock, Shares Outstanding", "terseLabel": "Preferred stock, shares outstanding (in shares)" } } }, "localname": "PreferredStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsNonprintingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockValue": { "auth_ref": [ "r16" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Preferred Stock, Value, Issued", "terseLabel": "Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at December 31, 2018 and 2017", "verboseLabel": "Preferred stock, no par value: 1,000,000 shares authorized; zero issued and outstanding at December\u00a031, 2019 and 2018" } } }, "localname": "PreferredStockValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PriorPeriodReclassificationAdjustmentDescription": { "auth_ref": [ "r0" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements.", "label": "Reclassification, Policy [Policy Text Block]", "terseLabel": "Reclassifications" } } }, "localname": "PriorPeriodReclassificationAdjustmentDescription", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ProceedsFromDividendsReceived": { "auth_ref": [ "r84" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Dividends received on equity and other investments during the current period.", "label": "Proceeds from Dividends Received", "terseLabel": "Cash dividends received" } } }, "localname": "ProceedsFromDividendsReceived", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromLifeInsurancePolicies": { "auth_ref": [ "r78", "r88" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.", "label": "Proceeds from Life Insurance Policy", "terseLabel": "Life insurance proceeds" } } }, "localname": "ProceedsFromLifeInsurancePolicies", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities": { "auth_ref": [ "r73", "r74", "r196" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale", "terseLabel": "Proceeds from maturities of securities available for sale" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities": { "auth_ref": [ "r74", "r196" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 11.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.", "label": "Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities", "terseLabel": "Proceeds from maturities of securities held to maturity" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromRepaymentsOfShortTermDebt": { "auth_ref": [ "r115" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.", "label": "Proceeds from (Repayments of) Short-term Debt", "terseLabel": "Net change in other borrowings" } } }, "localname": "ProceedsFromRepaymentsOfShortTermDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities": { "auth_ref": [ "r75", "r196" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.", "label": "Proceeds from Sale of Available-for-sale Securities", "terseLabel": "Proceeds from sale of available for sale securities" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r73", "r74", "r196" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Proceeds from Sale of Debt Securities, Available-for-sale", "terseLabel": "Proceeds from sales of debt securities" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfForeclosedAssets": { "auth_ref": [ "r78" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.", "label": "Proceeds from Sale of Foreclosed Assets", "terseLabel": "Proceeds from sale of real estate owned" } } }, "localname": "ProceedsFromSaleOfForeclosedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/RealEstateOwnedSummaryofActivityinBalanceofForeclosedAssetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfMortgageLoansHeldForSale": { "auth_ref": [ "r87", "r90" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 10.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.", "label": "Proceeds from Sale of Mortgage Loans Held-for-sale", "terseLabel": "Proceeds from sale of loans originated for resale" } } }, "localname": "ProceedsFromSaleOfMortgageLoansHeldForSale", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment": { "auth_ref": [ "r77" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.", "label": "Proceeds from Sale of Property, Plant, and Equipment", "terseLabel": "Proceeds from sale of premises and equipment" } } }, "localname": "ProceedsFromSaleOfPropertyPlantAndEquipment", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromStockOptionsExercised": { "auth_ref": [ "r82", "r358" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.", "label": "Proceeds from Stock Options Exercised", "terseLabel": "Exercise of stock options", "verboseLabel": "Issuance of common stock through option exercise" } } }, "localname": "ProceedsFromStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfessionalFees": { "auth_ref": [ "r609", "r610" ], "calculation": { "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail": { "order": 8.0, "parentTag": "tcbk_NoninterestExpenseExcludingLaborAndRelatedExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.", "label": "Professional Fees", "terseLabel": "Professional fees" } } }, "localname": "ProfessionalFees", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofNoninterestExpenseDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfitLoss": { "auth_ref": [ "r54", "r57", "r86", "r148", "r149", "r421", "r423", "r424", "r427", "r428" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.", "label": "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest", "terseLabel": "Net income" } } }, "localname": "ProfitLoss", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Property, Plant and Equipment [Abstract]", "terseLabel": "Property, Plant and Equipment [Abstract]" } } }, "localname": "PropertyPlantAndEquipmentAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentByTypeAxis": { "auth_ref": [ "r28", "r251" ], "lang": { "en-US": { "role": { "documentation": "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.", "label": "Property, Plant and Equipment, Type [Axis]", "terseLabel": "Property, Plant and Equipment, Type [Axis]" } } }, "localname": "PropertyPlantAndEquipmentByTypeAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": { "auth_ref": [ "r253" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.", "label": "Property, Plant and Equipment Disclosure [Text Block]", "terseLabel": "Premises and Equipment" } } }, "localname": "PropertyPlantAndEquipmentDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipment" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentGross": { "auth_ref": [ "r27", "r249" ], "calculation": { "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": 1.0, "parentTag": "tcbk_PropertyPlantAndEquipmentLessDepreciationGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Gross", "totalLabel": "Premises and equipment, gross" } } }, "localname": "PropertyPlantAndEquipmentGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentGrossPeriodIncreaseDecrease": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.", "label": "Property, Plant and Equipment, Gross, Period Increase (Decrease)", "terseLabel": "Premises and Equipment" } } }, "localname": "PropertyPlantAndEquipmentGrossPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r5", "r6", "r251", "r597" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 12.0, "parentTag": "us-gaap_Assets", "weight": 1.0 }, "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.", "label": "Property, Plant and Equipment, Net", "terseLabel": "Premises and equipment, net", "totalLabel": "Total premises and equipment" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/PremisesandEquipmentSummaryofPremisesandEquipmentDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Property, Plant and Equipment, Net, by Type [Abstract]", "terseLabel": "Property, Plant and Equipment, Net, by Type [Abstract]" } } }, "localname": "PropertyPlantAndEquipmentNetByTypeAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": { "auth_ref": [ "r26", "r106", "r251" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, basis of assets, depreciation and depletion methods used, including composite deprecation, estimated useful lives, capitalization policy, accounting treatment for costs incurred for repairs and maintenance, capitalized interest and the method it is calculated, disposals and impairments.", "label": "Property, Plant and Equipment, Policy [Policy Text Block]", "terseLabel": "Premises and Equipment" } } }, "localname": "PropertyPlantAndEquipmentPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentTextBlock": { "auth_ref": [ "r5", "r251" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.", "label": "Property, Plant and Equipment [Table Text Block]", "terseLabel": "Summary of Premises and Equipment" } } }, "localname": "PropertyPlantAndEquipmentTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/PremisesandEquipmentTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_PropertyPlantAndEquipmentTypeDomain": { "auth_ref": [ "r5", "r249" ], "lang": { "en-US": { "role": { "documentation": "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.", "label": "Property, Plant and Equipment, Type [Domain]", "terseLabel": "Property, Plant and Equipment, Type [Domain]" } } }, "localname": "PropertyPlantAndEquipmentTypeDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_PropertyPlantAndEquipmentUsefulLife": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.", "label": "Property, Plant and Equipment, Useful Life", "terseLabel": "Estimated useful lives of the related assets or lease terms" } } }, "localname": "PropertyPlantAndEquipmentUsefulLife", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "us-gaap_QuarterlyFinancialInformationDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Quarterly Financial Information Disclosure [Abstract]", "terseLabel": "Quarterly Financial Information Disclosure [Abstract]" } } }, "localname": "QuarterlyFinancialInformationDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_QuarterlyFinancialInformationTextBlock": { "auth_ref": [ "r137" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.", "label": "Quarterly Financial Information [Text Block]", "terseLabel": "Summary of Quarterly Results of Operations (unaudited)" } } }, "localname": "QuarterlyFinancialInformationTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsunaudited" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReceivablesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Receivables [Abstract]", "terseLabel": "Receivables [Abstract]" } } }, "localname": "ReceivablesAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_RegulatedOperationsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Regulated Operations [Abstract]", "terseLabel": "Regulated Operations [Abstract]" } } }, "localname": "RegulatedOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAgencyAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by name of regulatory agency.", "label": "Regulatory Agency [Axis]", "terseLabel": "Regulatory Agency [Axis]" } } }, "localname": "RegulatoryAgencyAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "stringItemType" }, "us-gaap_RegulatoryAgencyDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Organization that establishes and ensures compliance with rules or regulations.", "label": "Regulatory Agency [Domain]", "terseLabel": "Regulatory Agency [Domain]" } } }, "localname": "RegulatoryAgencyDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "domainItemType" }, "us-gaap_RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock": { "auth_ref": [ "r573", "r574", "r575", "r576", "r577", "r578", "r579", "r580", "r583" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable. The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time.", "label": "Regulatory Capital Requirements under Banking Regulations [Text Block]", "terseLabel": "Regulatory Matters" } } }, "localname": "RegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMatters" ], "xbrltype": "textBlockItemType" }, "us-gaap_RelatedPartyDepositLiabilities": { "auth_ref": [ "r113" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of deposits held by the entity for a related party (entity, shareholder, employee).", "label": "Related Party Deposit Liabilities", "terseLabel": "Bank deposits of directors, officers and other related parties" } } }, "localname": "RelatedPartyDepositLiabilities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_RelatedPartyDomain": { "auth_ref": [ "r487" ], "lang": { "en-US": { "role": { "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Domain]", "terseLabel": "Related Party [Domain]" } } }, "localname": "RelatedPartyDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_RelatedPartyTransactionDueFromToRelatedPartyNoncurrentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Related Party Transaction, Due from (to) Related Party, Noncurrent [Abstract]", "terseLabel": "Related Party Transaction, Due from (to) Related Party, Noncurrent [Abstract]" } } }, "localname": "RelatedPartyTransactionDueFromToRelatedPartyNoncurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Related Party Transaction [Line Items]", "terseLabel": "Related Party Transaction [Line Items]" } } }, "localname": "RelatedPartyTransactionLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Related Party Transactions [Abstract]", "terseLabel": "Related Party Transactions [Abstract]" } } }, "localname": "RelatedPartyTransactionsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": { "auth_ref": [ "r321", "r481", "r483", "r500", "r501", "r502", "r503", "r504", "r505", "r506", "r507", "r509", "r510", "r512", "r513" ], "lang": { "en-US": { "role": { "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Axis]", "terseLabel": "Related Party [Axis]" } } }, "localname": "RelatedPartyTransactionsByRelatedPartyAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": { "auth_ref": [ "r487" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Related Party Transactions Disclosure [Text Block]", "terseLabel": "Related Party Transactions" } } }, "localname": "RelatedPartyTransactionsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactions" ], "xbrltype": "textBlockItemType" }, "us-gaap_RentalIncomeNonoperating": { "auth_ref": [ "r71" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.", "label": "Rental Income, Nonoperating", "terseLabel": "Rent expense offset by rent income" } } }, "localname": "RentalIncomeNonoperating", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail", "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ResidentialMortgageMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan to purchase or refinance residential real estate for example, but not limited to, a home, in which the real estate itself serves as collateral for the loan.", "label": "Residential Mortgage [Member]", "terseLabel": "Residential" } } }, "localname": "ResidentialMortgageMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ResidentialRealEstateMember": { "auth_ref": [ "r305" ], "lang": { "en-US": { "role": { "documentation": "Property that is used as a home.", "label": "Residential Real Estate [Member]", "terseLabel": "Residential Real Estate" } } }, "localname": "ResidentialRealEstateMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail", "http://tcbk.com/role/RealEstateOwnedAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedCashAndCashEquivalents": { "auth_ref": [ "r4", "r97", "r104", "r517", "r592" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Restricted Cash and Cash Equivalents", "terseLabel": "Reserves to satisfy Federal regulatory requirements" } } }, "localname": "RestrictedCashAndCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestrictedInvestments": { "auth_ref": [], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 11.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.", "label": "Restricted Investments", "terseLabel": "Restricted equity securities" } } }, "localname": "RestrictedInvestments", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestrictedStockExpense": { "auth_ref": [ "r95" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.", "label": "Restricted Stock or Unit Expense", "terseLabel": "Total compensation costs for RSUs recognized in income" } } }, "localname": "RestrictedStockExpense", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestrictedStockUnitsRSUMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.", "label": "Restricted Stock Units (RSUs) [Member]", "terseLabel": "Restricted Stock Units (RSUs)" } } }, "localname": "RestrictedStockUnitsRSUMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "domainItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r19", "r285", "r593" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 3.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings (Accumulated Deficit)", "terseLabel": "Retained earnings" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Retained Earnings" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax": { "auth_ref": [ "r288", "r289", "r290" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofIncome": { "order": 1.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 }, "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail": { "order": 1.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.", "label": "Revenue from Contract with Customer, Including Assessed Tax", "terseLabel": "Service charges and fees", "verboseLabel": "Total service charges and fees" } } }, "localname": "RevenueFromContractWithCustomerIncludingAssessedTax", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofIncome", "http://tcbk.com/role/NoninterestIncomeandExpenseComponentsofOtherNoninterestIncomeDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_RevenueRecognitionPolicyTextBlock": { "auth_ref": [ "r105", "r106", "r107" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.", "label": "Revenue Recognition, Policy [Policy Text Block]", "terseLabel": "Revenue Recognition" } } }, "localname": "RevenueRecognitionPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": { "auth_ref": [ "r473", "r478" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.", "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability", "terseLabel": "ROUA obtained in exchange for operating lease liabilities" } } }, "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ScenarioForecastMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The reporting scenario used to indicate financial results forecast for a future period.", "label": "Scenario, Forecast [Member]", "terseLabel": "Scenario, Forecast" } } }, "localname": "ScenarioForecastMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ScenarioUnspecifiedDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Any scenario, that is, the particular reporting scenario is left unspecified. Scenarios distinguish among different kinds of business reporting facts, as for example actual versus budgeted figures.", "label": "Scenario, Unspecified [Domain]", "terseLabel": "Scenario, Unspecified [Domain]" } } }, "localname": "ScenarioUnspecifiedDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock": { "auth_ref": [ "r37" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.", "label": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]", "terseLabel": "Summary of Loan Balances" } } }, "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r50" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of accumulated other comprehensive income (loss).", "label": "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Components of Accumulated Other Comprehensive Loss" } } }, "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfActivityInAffordableHousingProgramObligationTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the activity in the Affordable Housing Program (AHP) obligation.", "label": "Activity in Affordable Housing Program Obligation [Table Text Block]", "terseLabel": "Schedule of Components of Investments in Qualified Affordable Housing Projects" } } }, "localname": "ScheduleOfActivityInAffordableHousingProgramObligationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r316" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost.", "label": "Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Components of Other Comprehensive Income (Loss) and Related Tax Effects" } } }, "localname": "ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAssumptionsUsedTableTextBlock": { "auth_ref": [ "r318" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets.", "label": "Schedule of Assumptions Used [Table Text Block]", "terseLabel": "Assumptions Used in Accounting for Plans" } } }, "localname": "ScheduleOfAssumptionsUsedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Debt Securities, Available-for-sale [Line Items]", "terseLabel": "Debt Securities, Available-for-sale [Line Items]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.", "label": "Schedule of Available-for-sale Securities Reconciliation [Table Text Block]", "terseLabel": "Amortized Cost and Estimated Fair Values of Investments Securities" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAvailableForSaleSecuritiesTable": { "auth_ref": [ "r201", "r206", "r219", "r220", "r221", "r223", "r560", "r565" ], "lang": { "en-US": { "role": { "documentation": "Schedule of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.", "label": "Schedule of Available-for-sale Securities [Table]", "terseLabel": "Schedule of Available-for-sale Securities [Table]" } } }, "localname": "ScheduleOfAvailableForSaleSecuritiesTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": { "auth_ref": [ "r407", "r408" ], "lang": { "en-US": { "role": { "documentation": "Schedule reflecting each material business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.", "label": "Schedule of Business Acquisitions, by Acquisition [Table]", "terseLabel": "Schedule of Business Acquisitions, by Acquisition [Table]" } } }, "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsAdditionalInformationDetail", "http://tcbk.com/role/BusinessCombinationsScheduleofFairValueofConsiderationTransferredIdentifiableNetAssetsAcquiredandResultingGoodwillDetail", "http://tcbk.com/role/BusinessCombinationsSummaryofEstimatedFairValueAdjustmentsResultinginGoodwillDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock": { "auth_ref": [ "r407", "r408" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts.", "label": "Schedule of Business Acquisitions, by Acquisition [Table Text Block]", "terseLabel": "Schedule of Fair Value of Consideration Transferred, Identifiable Net Assets Acquired and Resulting Goodwill" } } }, "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/BusinessCombinationsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCapitalizationLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Schedule of Capitalization [Line Items]", "terseLabel": "Schedule of Capitalization [Line Items]" } } }, "localname": "ScheduleOfCapitalizationLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfCapitalizationTable": { "auth_ref": [ "r136" ], "lang": { "en-US": { "role": { "documentation": "Summarization of information required and determined to be disclosed concerning the capitalization of the entity which is comprised of its long-term debt and equity instruments. The table may be detailed by subsidiary (legal entity) and include information by type of debt or equity detailed by instrument.", "label": "Schedule of Capitalization [Table]", "terseLabel": "Schedule of Capitalization [Table]" } } }, "localname": "ScheduleOfCapitalizationTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock": { "auth_ref": [ "r354" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits.", "label": "Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]", "terseLabel": "Summary of Compensation Costs and Excess Tax Benefits for RSUs" } } }, "localname": "ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock": { "auth_ref": [ "r572", "r575", "r580", "r582" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity.", "label": "Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]", "terseLabel": "Actual and Required Capital Ratios of Bank" } } }, "localname": "ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": { "auth_ref": [ "r395" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.", "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]", "terseLabel": "Components of Consolidated Income Tax Expense" } } }, "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r39" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans.", "label": "Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Condensed Statements of Comprehensive Income" } } }, "localname": "ScheduleOfComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock": { "auth_ref": [ "r322" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost.", "label": "Schedule of Costs of Retirement Plans [Table Text Block]", "terseLabel": "Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans" } } }, "localname": "ScheduleOfCostsOfRetirementPlansTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": { "auth_ref": [ "r388" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.", "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]", "terseLabel": "Company's Net Deferred Tax Asset Recorded in Other Assets" } } }, "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period.", "label": "Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]", "terseLabel": "Defined Benefit Pension Plans" } } }, "localname": "ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable": { "auth_ref": [ "r322", "r323", "r324", "r325", "r332" ], "lang": { "en-US": { "role": { "documentation": "Disclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan. It may be appropriate to group certain similar plans. Also includes schedule for fair value of plan assets by major categories of plan assets by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), Significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Defined Benefit Plans Disclosures [Table]", "terseLabel": "Schedule of Defined Benefit Plans Disclosures [Table]" } } }, "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAdditionalInformationDetail", "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail", "http://tcbk.com/role/RetirementPlansSummaryof401kContributionPlanDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": { "auth_ref": [ "r131" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.", "label": "Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]", "terseLabel": "Computation of Earnings Per Share" } } }, "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/EarningsPerShareTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": { "auth_ref": [ "r381" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.", "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]", "terseLabel": "Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate" } } }, "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/IncomeTaxesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock": { "auth_ref": [ "r372" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the details pertaining to each employee stock ownership plan.", "label": "Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block]", "terseLabel": "Summary of ESOP Activities" } } }, "localname": "ScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock": { "auth_ref": [ "r308" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.", "label": "Schedule of Expected Benefit Payments [Table Text Block]", "terseLabel": "Expected Benefit Payments to Participants and Estimated Contributions to be Made by Company" } } }, "localname": "ScheduleOfExpectedBenefitPaymentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r438" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]", "terseLabel": "Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable": { "auth_ref": [ "r454", "r455" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing the information required and determined to be disclosed regarding the fair value of financial assets and financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.", "label": "Schedule of Fair Value, Off-balance Sheet Risks [Table]", "terseLabel": "Schedule of Fair Value, Off-balance Sheet Risks [Table]" } } }, "localname": "ScheduleOfFairValueOffBalanceSheetRisksTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable": { "auth_ref": [ "r171", "r172" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing information related to troubled debt restructurings by status of troubled debt restructuring with further disaggregation by class of financing receivable and portfolio segment.", "label": "Schedule of Financing Receivable, Troubled Debt Restructurings [Table]", "terseLabel": "Schedule of Financing Receivable, Troubled Debt Restructurings [Table]" } } }, "localname": "ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFinancingReceivablesPastDueTable": { "auth_ref": [ "r178", "r179" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing the recorded investment in financing receivables that are past due but not impaired and financing receivables that are 90 days past due and still accruing. The schedule also includes financing receivables on nonaccrual status.", "label": "Schedule of Financing Receivables Past Due [Table]", "terseLabel": "Schedule of Financing Receivables Past Due [Table]" } } }, "localname": "ScheduleOfFinancingReceivablesPastDueTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable": { "auth_ref": [ "r239", "r241" ], "lang": { "en-US": { "role": { "documentation": "Schedule of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Schedule of Finite-Lived Intangible Assets [Table]", "terseLabel": "Schedule of Finite-Lived Intangible Assets [Table]" } } }, "localname": "ScheduleOfFiniteLivedIntangibleAssetsTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsRemainingEstimatedCoreDepositIntangibleAmortizationDetail", "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsSummaryofCoreDepositIntangiblesDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock": { "auth_ref": [ "r239", "r241" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.", "label": "Schedule of Finite-Lived Intangible Assets [Table Text Block]", "terseLabel": "Summary of Core Deposit Intangibles" } } }, "localname": "ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfGoodwillTextBlock": { "auth_ref": [ "r235", "r237" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.", "label": "Schedule of Goodwill [Table Text Block]", "terseLabel": "Summary of Goodwill Intangible" } } }, "localname": "ScheduleOfGoodwillTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfImpairedFinancingReceivableTable": { "auth_ref": [ "r166" ], "lang": { "en-US": { "role": { "documentation": "Schedule of the recorded investment, unpaid principal balance, associated allowance, average recorded investment, accounting policies, and interest income recognized on the accrual and cash basis for impaired financing receivables by class of financing receivable.", "label": "Schedule of Impaired Financing Receivable [Table]", "terseLabel": "Schedule of Impaired Financing Receivable [Table]" } } }, "localname": "ScheduleOfImpairedFinancingReceivableTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock": { "auth_ref": [ "r135" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.", "label": "Quarterly Financial Information [Table Text Block]", "terseLabel": "Results of Operations" } } }, "localname": "ScheduleOfQuarterlyFinancialInformationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofQuarterlyResultsofOperationsunauditedTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": { "auth_ref": [ "r109", "r481", "r483", "r484", "r485", "r486" ], "lang": { "en-US": { "role": { "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Schedule of Related Party Transactions, by Related Party [Table]", "terseLabel": "Schedule of Related Party Transactions, by Related Party [Table]" } } }, "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsSummaryofActivityinLendingTransactionsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates.", "label": "Schedule of Related Party Transactions [Table Text Block]", "terseLabel": "Summary of Activity in Lending Transactions" } } }, "localname": "ScheduleOfRelatedPartyTransactionsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RelatedPartyTransactionsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfServicingAssetsAtFairValueTextBlock": { "auth_ref": [ "r495" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the activity in the balance of servicing assets (including a description of where changes in fair value are reported in the statement of income for each period for which results of operations are presented), including but not limited to, the following: beginning and ending balances, additions (for instance, through purchases of servicing assets), disposals, changes in fair value during the period resulting from changes in inputs or assumptions used in the valuation model, other changes in fair value along with a description of those changes, and other changes that affect the balance along with a description of those changes.", "label": "Schedule of Servicing Assets at Fair Value [Table Text Block]", "terseLabel": "Fair Value of Mortgage Servicing Rights" } } }, "localname": "ScheduleOfServicingAssetsAtFairValueTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": { "auth_ref": [ "r338", "r357" ], "lang": { "en-US": { "role": { "documentation": "Components of an equity-based arrangement under which compensation is awarded to employees, typically comprised of compensation expense; changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan; and cash flow effects resulting from the equity-based payment arrangement. Component disclosures are by type of award and plan name.", "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]", "terseLabel": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]" } } }, "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable": { "auth_ref": [ "r357" ], "lang": { "en-US": { "role": { "documentation": "Details comprising a table providing supplementary information on outstanding and exercisable share awards as of the balance sheet date which stratifies outstanding options by ranges of exercise prices.", "label": "Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]", "terseLabel": "Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]" } } }, "localname": "ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock": { "auth_ref": [ "r341", "r350", "r352" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.", "label": "Share-based Compensation, Stock Options, Activity [Table Text Block]", "terseLabel": "Stock Option Activity" } } }, "localname": "ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.", "label": "Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]", "terseLabel": "Restricted Stock Unit (RSU) Activity" } } }, "localname": "ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfStockByClassTable": { "auth_ref": [ "r35", "r110", "r275", "r276", "r277", "r279", "r280", "r281", "r282", "r283", "r284", "r285" ], "lang": { "en-US": { "role": { "documentation": "Schedule detailing information related to equity by class of stock. Class of stock includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. It also includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity.", "label": "Schedule of Stock by Class [Table]", "terseLabel": "Schedule of Stock by Class [Table]" } } }, "localname": "ScheduleOfStockByClassTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtAdditionalInformationDetail", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfSubordinatedBorrowingTextBlock": { "auth_ref": [ "r568" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of borrowings under subordinated debt agreements that qualify as available in computing net capital under SEC uniform net capital rules for broker-dealers, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total.", "label": "Schedule of Subordinated Borrowing [Table Text Block]", "terseLabel": "Summary of Terms and Recorded Balance of Subordinated Debenture" } } }, "localname": "ScheduleOfSubordinatedBorrowingTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock": { "auth_ref": [ "r219" ], "lang": { "en-US": { "role": { "documentation": "For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).", "label": "Schedule of Unrealized Loss on Investments [Table Text Block]", "terseLabel": "Gross Unrealized Losses on Investment Securities" } } }, "localname": "ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": { "auth_ref": [ "r241" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.", "label": "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]", "terseLabel": "Remaining Estimated Core Deposit Intangible Amortization" } } }, "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/GoodwillandOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ServicingAssetAtFairValueAdditions": { "auth_ref": [ "r497" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.", "label": "Servicing Asset at Fair Value, Additions", "terseLabel": "Additions" } } }, "localname": "ServicingAssetAtFairValueAdditions", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ServicingAssetAtFairValueAmount": { "auth_ref": [ "r493", "r496" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.", "label": "Servicing Asset at Fair Value, Amount", "periodEndLabel": "Balance at end of period", "periodStartLabel": "Balance at beginning of period", "terseLabel": "Fair Value" } } }, "localname": "ServicingAssetAtFairValueAmount", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ServicingAssetAtFairValuePeriodIncreaseDecrease": { "auth_ref": [ "r495" ], "lang": { "en-US": { "role": { "documentation": "The increase (decrease) in the fair value of servicing assets that are subsequently measured at fair value.", "label": "Servicing Asset at Fair Value, Period Increase (Decrease)", "terseLabel": "Change in fair value" } } }, "localname": "ServicingAssetAtFairValuePeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ServicingAssetMeasurementInput": { "auth_ref": [ "r443" ], "lang": { "en-US": { "role": { "documentation": "Value of input used to measure servicing asset.", "label": "Servicing Asset, Measurement Input", "terseLabel": "Fair Value Of Mortgage Servicing Rights Weighted Average" } } }, "localname": "ServicingAssetMeasurementInput", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "decimalItemType" }, "us-gaap_ServicingAssetsAtFairValueLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Servicing Assets at Fair Value [Line Items]", "terseLabel": "Servicing Assets at Fair Value [Line Items]" } } }, "localname": "ServicingAssetsAtFairValueLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ServicingAssetsAtFairValueTable": { "auth_ref": [ "r495" ], "lang": { "en-US": { "role": { "documentation": "Activity in the balance of servicing assets subsequently measured at fair value (including a description of where changes in fair value are reported in the statement of income for each period for which results of operations are presented), including but not limited to, the following: beginning and ending balances, additions (through purchases of servicing assets and servicing assets that result from transfers of financial assets), disposals, changes in fair value during the period resulting from changes in valuations inputs or assumptions used in the valuation model, other changes in fair value along with a description of those changes, and other changes that affect the balance along with a description of those changes.", "label": "Schedule of Servicing Assets at Fair Value [Table]", "terseLabel": "Schedule of Servicing Assets at Fair Value [Table]" } } }, "localname": "ServicingAssetsAtFairValueTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensation": { "auth_ref": [ "r94" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 20.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.", "label": "Share-based Compensation", "terseLabel": "Equity compensation vesting expense" } } }, "localname": "ShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedStatementsofCashFlowsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod": { "auth_ref": [ "r346" ], "lang": { "en-US": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period", "negatedLabel": "RSUs forfeited/expired, Number of RSUs" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": { "auth_ref": [ "r348" ], "lang": { "en-US": { "role": { "documentation": "The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period", "terseLabel": "RSUs granted, Number of RSUs" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r348" ], "lang": { "en-US": { "role": { "documentation": "The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value", "terseLabel": "RSUs granted, Weighted Average Fair Value on Date of Grant (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": { "auth_ref": [ "r347" ], "lang": { "en-US": { "role": { "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number", "periodEndLabel": "RSUs outstanding, Number of RSUs, ending balance", "periodStartLabel": "RSUs outstanding, Number of RSUs, beginning balance", "terseLabel": "Number of units outstanding expected to vest" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms": { "auth_ref": [ "r353" ], "lang": { "en-US": { "role": { "documentation": "Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms", "terseLabel": "Weighted-average remaining contractual term" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "durationItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": { "auth_ref": [ "r349" ], "lang": { "en-US": { "role": { "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period", "terseLabel": "Additional market plus service condition RSUs vested, Number of RSUs" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]", "terseLabel": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber": { "auth_ref": [ "r342", "r344" ], "lang": { "en-US": { "role": { "documentation": "Number of equity instruments other than options outstanding, including both vested and non-vested instruments.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number", "terseLabel": "RSUs outstanding" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant": { "auth_ref": [ "r357" ], "lang": { "en-US": { "role": { "documentation": "The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant", "terseLabel": "Options available for grant under the plan" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]", "terseLabel": "Information about Options" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue": { "auth_ref": [ "r351" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value", "terseLabel": "Intrinsic value of options exercised" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod": { "auth_ref": [ "r346" ], "lang": { "en-US": { "role": { "documentation": "The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period", "negatedLabel": "Options forfeited, Number of Shares (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Gross number of share options (or share units) granted during the period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross", "terseLabel": "Options granted, Number of Shares (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue": { "auth_ref": [ "r357" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value", "terseLabel": "Intrinsic value (in thousands)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber": { "auth_ref": [ "r343", "r357" ], "lang": { "en-US": { "role": { "documentation": "Number of options outstanding, including both vested and non-vested options.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number", "periodEndLabel": "Options outstanding, Number of Shares, ending balance (in shares)", "periodStartLabel": "Options outstanding, Number of Shares, beginning balance (in shares)", "terseLabel": "Number of options (in shares)", "verboseLabel": "Outstanding options under the plan (in shares)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice": { "auth_ref": [ "r342" ], "lang": { "en-US": { "role": { "documentation": "Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price", "periodEndLabel": "Options outstanding, Weighted Average Exercise Price, ending balance (in dollars per share)", "periodStartLabel": "Options outstanding, Weighted Average Exercise Price, beginning balance (in dollars per share)", "terseLabel": "Weighted average exercise price (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAndExercisableTableTextBlock": { "auth_ref": [ "r352" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding and exercisable options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]", "terseLabel": "Summary of Options Outstanding" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAndExercisableTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": { "auth_ref": [ "r336", "r339" ], "lang": { "en-US": { "role": { "documentation": "Equity-based compensation award.", "label": "Equity Award [Domain]", "terseLabel": "Equity Award [Domain]" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail" ], "xbrltype": "domainItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Weighted average price at which option holders acquired shares when converting their stock options into shares.", "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price", "terseLabel": "Options exercised, Weighted Average Exercise Price (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.", "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price", "terseLabel": "Options forfeited, Weighted Average Exercise Price (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.", "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price", "terseLabel": "Options granted, Weighted Average Exercise Price (in dollars per share)" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]", "terseLabel": "Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]" } } }, "localname": "ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ShareRepurchaseProgramAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by share repurchase program.", "label": "Share Repurchase Program [Axis]", "terseLabel": "Share Repurchase Program [Axis]" } } }, "localname": "ShareRepurchaseProgramAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ShareRepurchaseProgramDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Name of the share repurchase program.", "label": "Share Repurchase Program [Domain]", "terseLabel": "Share Repurchase Program [Domain]" } } }, "localname": "ShareRepurchaseProgramDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2": { "auth_ref": [ "r353" ], "lang": { "en-US": { "role": { "documentation": "Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term", "terseLabel": "Weighted average remaining contractual term (yrs.)" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofOptionsOutstandingDetail" ], "xbrltype": "durationItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1": { "auth_ref": [ "r340" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value", "terseLabel": "Fair value of options that vested" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShortTermLeaseCost": { "auth_ref": [ "r469", "r478" ], "calculation": { "http://tcbk.com/role/ComponentsofLeaseExpenseDetails": { "order": 1.0, "parentTag": "us-gaap_LeaseCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of short-term lease cost, excluding expense for lease with term of one month or less.", "label": "Short-term Lease, Cost", "terseLabel": "Short-term lease cost" } } }, "localname": "ShortTermLeaseCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r116" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for all significant accounting policies of the reporting entity.", "label": "Significant Accounting Policies [Text Block]", "terseLabel": "Summary of Significant Accounting Policies" } } }, "localname": "SignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_SpecialMentionMember": { "auth_ref": [ "r169" ], "lang": { "en-US": { "role": { "documentation": "A category of financing receivables considered to have potential weaknesses that deserve management's close attention. If left uncorrected, those potential weaknesses may result in a deterioration of the repayment prospects for the asset or of the creditor's position at some future date.", "label": "Special Mention [Member]", "terseLabel": "Special Mention" } } }, "localname": "SpecialMentionMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_StandbyLettersOfCreditMember": { "auth_ref": [ "r265", "r271", "r419", "r607" ], "lang": { "en-US": { "role": { "documentation": "An irrevocable undertaking (typically by a financial institution) to guarantee payment of a specified financial obligation.", "label": "Standby Letters of Credit [Member]", "terseLabel": "Standby letters of credit" } } }, "localname": "StandbyLettersOfCreditMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r15", "r16", "r17", "r278" ], "lang": { "en-US": { "role": { "documentation": "Information by the different classes of stock of the entity.", "label": "Class of Stock [Axis]", "terseLabel": "Class of Stock [Axis]" } } }, "localname": "StatementClassOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/CommitmentsandContingenciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r36", "r278" ], "lang": { "en-US": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]", "terseLabel": "Equity Components [Axis]" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofAccumulatedOtherComprehensiveLossDetail", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_StatementLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Statement [Line Items]", "terseLabel": "Statement [Line Items]" } } }, "localname": "StatementLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "stringItemType" }, "us-gaap_StatementOfCashFlowsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Cash Flows [Abstract]", "terseLabel": "Statement of Cash Flows [Abstract]" } } }, "localname": "StatementOfCashFlowsAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Financial Position [Abstract]", "terseLabel": "Statement of Financial Position [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Comprehensive Income [Abstract]", "terseLabel": "Statement of Comprehensive Income [Abstract]" } } }, "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement of Stockholders' Equity [Abstract]", "terseLabel": "Statement of Stockholders' Equity [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementScenarioAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by scenario to be reported. Scenarios distinguish among different kinds of business reporting facts, as for example actual versus budgeted figures.", "label": "Scenario [Axis]", "terseLabel": "Scenario [Axis]" } } }, "localname": "StatementScenarioAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.", "label": "Statement [Table]", "terseLabel": "Statement [Table]" } } }, "localname": "StatementTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "stringItemType" }, "us-gaap_StockIssuedDuringPeriodSharesNewIssues": { "auth_ref": [ "r16", "r17", "r278", "r285" ], "lang": { "en-US": { "role": { "documentation": "Number of new stock issued during the period.", "label": "Stock Issued During Period, Shares, New Issues", "terseLabel": "Issuance of common stock, shares" } } }, "localname": "StockIssuedDuringPeriodSharesNewIssues", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised": { "auth_ref": [ "r16", "r17", "r278", "r285", "r345" ], "lang": { "en-US": { "role": { "documentation": "Number of share options (or share units) exercised during the current period.", "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period", "negatedLabel": "Options exercised, Number of Shares (in shares)", "terseLabel": "Stock options exercised, shares" } } }, "localname": "StockIssuedDuringPeriodSharesStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsStockOptionActivityDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueNewIssues": { "auth_ref": [ "r16", "r17", "r278", "r285" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.", "label": "Stock Issued During Period, Value, New Issues", "terseLabel": "Issuance of common stock" } } }, "localname": "StockIssuedDuringPeriodValueNewIssues", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised": { "auth_ref": [ "r36", "r278", "r285" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Value of stock issued as a result of the exercise of stock options.", "label": "Stock Issued During Period, Value, Stock Options Exercised", "terseLabel": "Stock options exercised" } } }, "localname": "StockIssuedDuringPeriodValueStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.", "label": "Stock Repurchase Program, Number of Shares Authorized to be Repurchased", "terseLabel": "Repurchase of common stock (in shares)" } } }, "localname": "StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_StockRepurchasedDuringPeriodShares": { "auth_ref": [ "r16", "r17", "r278", "r285" ], "lang": { "en-US": { "role": { "documentation": "Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.", "label": "Stock Repurchased During Period, Shares", "negatedLabel": "Repurchase of common stock, shares", "terseLabel": "Stock repurchase plan, number of shares repurchased (in shares)" } } }, "localname": "StockRepurchasedDuringPeriodShares", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/ShareholdersEquityAdditionalInformationDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_StockRepurchasedDuringPeriodValue": { "auth_ref": [ "r16", "r17", "r278", "r285" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.", "label": "Stock Repurchased During Period, Value", "negatedLabel": "Repurchase of common stock" } } }, "localname": "StockRepurchasedDuringPeriodValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r17", "r20", "r21", "r182" ], "calculation": { "http://tcbk.com/role/ConsolidatedBalanceSheets": { "order": 2.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.", "label": "Stockholders' Equity Attributable to Parent", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "totalLabel": "Total shareholders\u2019 equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Stockholders' Equity Attributable to Parent [Abstract]", "terseLabel": "Shareholders' equity" } } }, "localname": "StockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedBalanceSheets", "http://tcbk.com/role/TriCoBancsharesCondensedFinancialStatementsParentOnlyCondensedBalanceSheetsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityNoteDisclosureTextBlock": { "auth_ref": [ "r287" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.", "label": "Stockholders' Equity Note Disclosure [Text Block]", "terseLabel": "Shareholders' Equity" } } }, "localname": "StockholdersEquityNoteDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ShareholdersEquity" ], "xbrltype": "textBlockItemType" }, "us-gaap_StockholdersEquityPeriodIncreaseDecrease": { "auth_ref": [ "r278", "r285" ], "lang": { "en-US": { "role": { "documentation": "The increase (decrease) in stockholders' equity during the period.", "label": "Stockholders' Equity, Period Increase (Decrease)", "terseLabel": "Decline in equity, net of tax" } } }, "localname": "StockholdersEquityPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_SubleaseIncome": { "auth_ref": [ "r471", "r478" ], "calculation": { "http://tcbk.com/role/ComponentsofLeaseExpenseDetails": { "order": 2.0, "parentTag": "us-gaap_LeaseCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of sublease income excluding finance and operating lease expense.", "label": "Sublease Income", "negatedLabel": "Sublease income" } } }, "localname": "SubleaseIncome", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SubordinatedBorrowingDueDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Date the payments are due on subordinated debt, in CCYY-MM-DD format.", "label": "Subordinated Borrowing, Due Date", "terseLabel": "Maturity Date" } } }, "localname": "SubordinatedBorrowingDueDate", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "dateItemType" }, "us-gaap_SubordinatedBorrowingLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Subordinated Borrowing [Line Items]", "terseLabel": "Subordinated Borrowing [Line Items]" } } }, "localname": "SubordinatedBorrowingLineItems", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "stringItemType" }, "us-gaap_SubordinatedBorrowingTable": { "auth_ref": [ "r568" ], "lang": { "en-US": { "role": { "documentation": "Schedule of borrowings under subordinated debt agreements that qualify as available in computing net capital under SEC's uniform net capital rule, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total.", "label": "Subordinated Borrowing [Table]", "terseLabel": "Subordinated Borrowing [Table]" } } }, "localname": "SubordinatedBorrowingTable", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "stringItemType" }, "us-gaap_SubstandardMember": { "auth_ref": [ "r169" ], "lang": { "en-US": { "role": { "documentation": "A category of financing receivables that are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the creditor will sustain some loss if the deficiencies are not corrected.", "label": "Substandard [Member]", "terseLabel": "Substandard" } } }, "localname": "SubstandardMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_SupplementalCashFlowInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Supplemental Cash Flow Information [Abstract]", "terseLabel": "Supplemental disclosure of cash flow activity" } } }, "localname": "SupplementalCashFlowInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_TierOneLeverageCapital": { "auth_ref": [ "r572", "r582" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.", "label": "Tier One Leverage Capital", "terseLabel": "Tier 1 Capital (to Average Assets), Actual, Amount" } } }, "localname": "TierOneLeverageCapital", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy": { "auth_ref": [ "r572", "r582" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.", "label": "Tier One Leverage Capital Required for Capital Adequacy", "terseLabel": "Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount" } } }, "localname": "TierOneLeverageCapitalRequiredForCapitalAdequacy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets": { "auth_ref": [ "r572", "r575", "r582" ], "lang": { "en-US": { "role": { "documentation": "The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.", "label": "Tier One Leverage Capital Required for Capital Adequacy to Average Assets", "terseLabel": "Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio" } } }, "localname": "TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized": { "auth_ref": [ "r572" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.", "label": "Tier One Leverage Capital Required to be Well Capitalized", "terseLabel": "Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount" } } }, "localname": "TierOneLeverageCapitalRequiredToBeWellCapitalized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets": { "auth_ref": [ "r572" ], "lang": { "en-US": { "role": { "documentation": "The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.", "label": "Tier One Leverage Capital Required to be Well Capitalized to Average Assets", "terseLabel": "Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio" } } }, "localname": "TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_TierOneLeverageCapitalToAverageAssets": { "auth_ref": [ "r572", "r582" ], "lang": { "en-US": { "role": { "documentation": "Tier 1 Leverage Capital divided by average assets as defined in the regulations.", "label": "Tier One Leverage Capital to Average Assets", "terseLabel": "Tier 1 Capital (to Average Assets), Actual, Ratio" } } }, "localname": "TierOneLeverageCapitalToAverageAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_TierOneRiskBasedCapital": { "auth_ref": [ "r572", "r582" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Tier 1 Risk Based Capital as defined in the regulations.", "label": "Tier One Risk Based Capital", "terseLabel": "Tier 1 Capital (to Risk Weighted Assets), Actual, Amount" } } }, "localname": "TierOneRiskBasedCapital", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy": { "auth_ref": [ "r572", "r582" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The minimum amount of Tier 1 Risk Based Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.", "label": "Tier One Risk Based Capital Required for Capital Adequacy", "terseLabel": "Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount" } } }, "localname": "TierOneRiskBasedCapitalRequiredForCapitalAdequacy", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets": { "auth_ref": [ "r572", "r575", "r582" ], "lang": { "en-US": { "role": { "documentation": "The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.", "label": "Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets", "verboseLabel": "Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio" } } }, "localname": "TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized": { "auth_ref": [ "r572" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.", "label": "Tier One Risk Based Capital Required to be Well Capitalized", "terseLabel": "Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount" } } }, "localname": "TierOneRiskBasedCapitalRequiredToBeWellCapitalized", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": { "auth_ref": [ "r572" ], "lang": { "en-US": { "role": { "documentation": "The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as \"well capitalized\" under the regulatory framework for prompt corrective action.", "label": "Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets", "terseLabel": "Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio" } } }, "localname": "TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets": { "auth_ref": [ "r572", "r582" ], "lang": { "en-US": { "role": { "documentation": "Tier 1 capital divided by risk weighted assets as defined by regulations.", "label": "Tier One Risk Based Capital to Risk Weighted Assets", "terseLabel": "Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio" } } }, "localname": "TierOneRiskBasedCapitalToRiskWeightedAssets", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RegulatoryMattersActualandRequiredCapitalRatiosofBankDetail" ], "xbrltype": "percentItemType" }, "us-gaap_TimeDepositMaturitiesAfterYearFive": { "auth_ref": [ "r272" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": 6.0, "parentTag": "us-gaap_TimeDeposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposits maturing after the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Time Deposit Maturities, after Year Five", "terseLabel": "Thereafter" } } }, "localname": "TimeDepositMaturitiesAfterYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDepositMaturitiesTableTextBlock": { "auth_ref": [ "r272" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of time deposit liability maturities.", "label": "Time Deposit Maturities [Table Text Block]", "terseLabel": "Schedule of Maturities of Time Deposits" } } }, "localname": "TimeDepositMaturitiesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_TimeDepositMaturitiesYearFive": { "auth_ref": [ "r272" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": 5.0, "parentTag": "us-gaap_TimeDeposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposits maturing in the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Time Deposit Maturities, Year Five", "terseLabel": "2024" } } }, "localname": "TimeDepositMaturitiesYearFive", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDepositMaturitiesYearFour": { "auth_ref": [ "r272" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": 4.0, "parentTag": "us-gaap_TimeDeposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposits maturing in the fourth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Time Deposit Maturities, Year Four", "terseLabel": "2023" } } }, "localname": "TimeDepositMaturitiesYearFour", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDepositMaturitiesYearOne": { "auth_ref": [ "r272" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": 1.0, "parentTag": "us-gaap_TimeDeposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposits maturing in the next fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Time Deposit Maturities, Next Twelve Months", "terseLabel": "2020" } } }, "localname": "TimeDepositMaturitiesYearOne", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDepositMaturitiesYearThree": { "auth_ref": [ "r272" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": 3.0, "parentTag": "us-gaap_TimeDeposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposits maturing in the third fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Time Deposit Maturities, Year Three", "terseLabel": "2022" } } }, "localname": "TimeDepositMaturitiesYearThree", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDepositMaturitiesYearTwo": { "auth_ref": [ "r272" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": 2.0, "parentTag": "us-gaap_TimeDeposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposits maturing in the second fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.", "label": "Time Deposit Maturities, Year Two", "terseLabel": "2021" } } }, "localname": "TimeDepositMaturitiesYearTwo", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDeposits": { "auth_ref": [ "r529", "r567" ], "calculation": { "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposit liabilities, including certificates of deposit.", "label": "Time Deposits", "totalLabel": "Total" } } }, "localname": "TimeDeposits", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDeposits100000OrMore": { "auth_ref": [ "r629" ], "calculation": { "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail": { "order": 4.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.", "label": "Time Deposits, $100,000 or More", "terseLabel": "Time certificates, $250,000 and over" } } }, "localname": "TimeDeposits100000OrMore", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsSummaryofBalancesofDepositsDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDepositsByMaturityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Time Deposits, Fiscal Year Maturity [Abstract]", "terseLabel": "Summary of maturities of time deposits [Abstract]" } } }, "localname": "TimeDepositsByMaturityAbstract", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/DepositsScheduleofMaturitiesofTimeDepositsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_TitleOfIndividualAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by title of individual or nature of relationship to individual or group of individuals.", "label": "Title of Individual [Axis]", "terseLabel": "Title of Individual [Axis]" } } }, "localname": "TitleOfIndividualAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "stringItemType" }, "us-gaap_TitleOfIndividualWithRelationshipToEntityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Title of individual, or nature of relationship to individual or group of individuals.", "label": "Relationship to Entity [Domain]", "terseLabel": "Relationship to Entity [Domain]" } } }, "localname": "TitleOfIndividualWithRelationshipToEntityDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/RetirementPlansAssumptionsUsedinAccountingforPlansDetail" ], "xbrltype": "domainItemType" }, "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": { "auth_ref": [ "r498" ], "lang": { "en-US": { "role": { "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.", "label": "Financial Instruments [Domain]", "terseLabel": "Financial Instruments [Domain]" } } }, "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesAnalysisofPastDueandNonaccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesImpairedLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleCreditQualityIndicatorsDetail", "http://tcbk.com/role/AllowanceforLoanLossesScheduleofNonAccrualLoansDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesDetail", "http://tcbk.com/role/AllowanceforLoanLossesSummaryofActivityinAllowanceforLoanLossesNetofUnearnedFeesforPeriodsIndicatedDetail", "http://tcbk.com/role/AllowanceforLoanLossesTroubledDebtRestructuringsDetail", "http://tcbk.com/role/CommitmentsandContingenciesSummaryofBanksCommitmentsandContingentLiabilitiesDetail", "http://tcbk.com/role/FairValueMeasurementEstimatedFairValuesofFinancialInstrumentsthatareReportedatAmortizedCostinConsolidatedBalanceSheetsDetail", "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutRecurringFairValueMeasurementsDetail", "http://tcbk.com/role/FairValueMeasurementReconciliationofAssetsandLiabilitiesMeasuredatFairValueUsingSignificantUnobservableInputsonRecurringBasisDetail", "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail", "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail", "http://tcbk.com/role/MortgageServicingRightsFairValueofMortgageServicingRightsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock": { "auth_ref": [ "r171", "r172" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of financing receivables and troubled debt restructurings.", "label": "Troubled Debt Restructurings on Financing Receivables [Table Text Block]", "terseLabel": "Troubled Debt Restructurings" } } }, "localname": "TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/AllowanceforLoanLossesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_TypeOfAdoptionMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Adoption and early adoption of sources of change to generally accepted accounting principles (GAAP) in the United States. The FASB released the FASB Accounting Standards Codification as the authoritative source of literature effective for interim and annual periods ending after September 15, 2009. As part of the Codification process, the FASB issues Accounting Standards Updates to amend the Codification but otherwise the Accounting Standards Updates are not authoritative in their own right. All previous accounting standards (such as FASB Statements of Financial Accounting Standards, FASB Interpretations, FASB Staff Positions, Emerging Issues Task Force Consensuses, other pronouncements of the FASB or other designated bodies, or other forms of GAAP are considered accounting pronouncements) were superseded upon the adoption of the Codification. For an interim period, references to the superseded standards are included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.", "label": "Type of Adoption [Domain]", "terseLabel": "Type of Adoption [Domain]" } } }, "localname": "TypeOfAdoptionMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComprehensiveIncomeComponentsofOtherComprehensiveIncomeLossandRelatedTaxEffectsDetail", "http://tcbk.com/role/ConsolidatedStatementsofChangesinShareholdersEquity", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsInformationaboutOptionsDetail", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "domainItemType" }, "us-gaap_USGovernmentAgenciesSecuritiesAtCarryingValue": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Debt securities issued by a United States government agency such as Government National Mortgage Association (Ginnie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac), and Federal National Mortgage Association (Fannie Mae), which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.", "label": "US Government Agencies Securities, at Carrying Value", "terseLabel": "Residential real estate mortgage-backed securities" } } }, "localname": "USGovernmentAgenciesSecuritiesAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember": { "auth_ref": [ "r535" ], "lang": { "en-US": { "role": { "documentation": "This category includes information about debt issued by US Government Corporations and Agencies. Investments in such US Government Corporations may include debt securities issued by the Government National Mortgage Association (Ginnie Mae) and by the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac).", "label": "US Government Corporations and Agencies Securities [Member]", "terseLabel": "Obligations of U.S. government agencies" } } }, "localname": "USGovernmentCorporationsAndAgenciesSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_USStatesAndPoliticalSubdivisionsMember": { "auth_ref": [ "r305" ], "lang": { "en-US": { "role": { "documentation": "Bonds or similar securities issued by state, city, or local US governments or the agencies operated by state, city, or local governments. Debt securities issued by state governments may include bond issuances of US state authorities including, for example, but not limited to, housing authorities, dormitory authorities, and general obligations while debt securities issued by political subdivisions of US states would include, for example, debt issuances by county, borough, city, or municipal governments.", "label": "US States and Political Subdivisions Debt Securities [Member]", "terseLabel": "Obligations of states and political subdivisions" } } }, "localname": "USStatesAndPoliticalSubdivisionsMember", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementRecordedAmountofAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetail", "http://tcbk.com/role/InvestmentSecuritiesAdditionalInformationDetail", "http://tcbk.com/role/InvestmentSecuritiesAmortizedCostandEstimatedFairValuesofInvestmentsSecuritiesDetail", "http://tcbk.com/role/InvestmentSecuritiesGrossUnrealizedLossesonInvestmentSecuritiesDetail" ], "xbrltype": "domainItemType" }, "us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums": { "auth_ref": [ "r185" ], "calculation": { "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail": { "order": 3.0, "parentTag": "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.", "label": "Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums", "terseLabel": "Discounts to principal balance of loans owed, net of charge-offs" } } }, "localname": "UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/LoansSummaryofLoanBalancesDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrealizedGainLossOnSecurities": { "auth_ref": [ "r95" ], "calculation": { "http://tcbk.com/role/ConsolidatedStatementsofCashFlows": { "order": 22.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of unrealized gain (loss) recognized in the income statement on unsold other securities.", "label": "Unrealized Gain (Loss) on Securities", "negatedLabel": "(Gain) loss on marketable equity securities", "terseLabel": "Unrealized gains (losses) recognized in condensed consolidated statements of income" } } }, "localname": "UnrealizedGainLossOnSecurities", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ConsolidatedStatementsofCashFlows", "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" ], "xbrltype": "monetaryItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r138", "r139", "r141", "r142", "r143", "r144", "r145" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.", "label": "Use of Estimates, Policy [Policy Text Block]", "terseLabel": "Use of Estimates in the Preparation of Financial Statements" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/SummaryofSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ValuationTechniqueAxis": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Information by valuation approach and technique.", "label": "Valuation Approach and Technique [Axis]", "terseLabel": "Valuation Approach and Technique [Axis]" } } }, "localname": "ValuationTechniqueAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "stringItemType" }, "us-gaap_ValuationTechniqueDomain": { "auth_ref": [ "r442" ], "lang": { "en-US": { "role": { "documentation": "Valuation approach and technique.", "label": "Valuation Approach and Technique [Domain]", "terseLabel": "Valuation Approach and Technique [Domain]" } } }, "localname": "ValuationTechniqueDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/FairValueMeasurementQuantitativeInformationaboutFairValueMeasurementsforFinancialInstrumentsMeasuredatFairValueonNonrecurringBasisDetail" ], "xbrltype": "domainItemType" }, "us-gaap_VariableLeaseCost": { "auth_ref": [ "r470", "r478" ], "calculation": { "http://tcbk.com/role/ComponentsofLeaseExpenseDetails": { "order": 4.0, "parentTag": "us-gaap_LeaseCost", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.", "label": "Variable Lease, Cost", "terseLabel": "Variable lease cost" } } }, "localname": "VariableLeaseCost", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/ComponentsofLeaseExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_VariableRateAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of variable rate.", "label": "Variable Rate [Axis]", "terseLabel": "Variable Rate [Axis]" } } }, "localname": "VariableRateAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "stringItemType" }, "us-gaap_VariableRateDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.", "label": "Variable Rate [Domain]", "terseLabel": "Variable Rate [Domain]" } } }, "localname": "VariableRateDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/JuniorSubordinatedDebtSummaryofTermsandRecordedBalanceofSubordinatedDebentureDetail" ], "xbrltype": "domainItemType" }, "us-gaap_VestingAxis": { "auth_ref": [ "r357" ], "lang": { "en-US": { "role": { "documentation": "Information by vesting schedule for share-based compensation.", "label": "Vesting [Axis]", "terseLabel": "Vesting [Axis]" } } }, "localname": "VestingAxis", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "stringItemType" }, "us-gaap_VestingDomain": { "auth_ref": [ "r357" ], "lang": { "en-US": { "role": { "documentation": "Vesting schedule for share-based compensation.", "label": "Vesting [Domain]", "terseLabel": "Vesting [Domain]" } } }, "localname": "VestingDomain", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsAdditionalInformationDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsRestrictedStockUnitRSUActivityDetail", "http://tcbk.com/role/StockOptionsandOtherEquityBasedIncentiveInstrumentsSummaryofCompensationCostsandExcessTaxBenefitsforRSUsDetail" ], "xbrltype": "domainItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r124", "r129" ], "calculation": { "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-US": { "role": { "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.", "label": "Weighted Average Number of Shares Outstanding, Diluted", "totalLabel": "Average number of common shares outstanding used to calculate diluted earnings per share (in shares)" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r123", "r129" ], "calculation": { "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail": { "order": 1.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.", "label": "Weighted Average Number of Shares Outstanding, Basic", "terseLabel": "Average number of common shares outstanding (in shares)" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2018-01-31", "presentation": [ "http://tcbk.com/role/EarningsPerShareComputationofEarningsPerShareDetail" ], "xbrltype": "sharesItemType" } }, "unitCount": 16 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=6359566&loc=d3e326-107755" }, "r1": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765" }, "r10": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(22))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586" }, "r104": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586" }, "r105": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18726-107790" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(k))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r11": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(24))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(d),(e))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(e),(f))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(h)(2))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(k))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08.(m)(1)(i)(A))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.12-04(a))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690" }, "r116": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r117": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794" }, "r12": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(25))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22580-107794" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794" }, "r123": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1448-109256" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1505-109256" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1252-109256" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "28A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1500-109256" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r13": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(26)(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109256448&loc=d3e4984-109258" }, "r134": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "260", "URI": "http://asc.fasb.org/topic&trid=2144383" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(a)(5)", "Topic": "270", "URI": "http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699" }, "r137": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "270", "URI": "http://asc.fasb.org/topic&trid=2126967" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r14": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(26)(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599" }, "r15": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(27))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r150": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=115929826&loc=d3e9031-108599" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "10", "Topic": "305", "URI": "http://asc.fasb.org/extlink&oid=6375392&loc=d3e26790-107797" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82891408&loc=d3e4437-111522" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5162-111524" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(4)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524" }, "r16": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(28))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(3)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5033-111524" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "29", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524" }, "r17": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(29))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5066-111524" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "34", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "35", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL49126937-111524" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5093-111524" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524" }, "r18": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84173941&loc=d3e5144-111524" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82894031&loc=SL6953803-111525" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 4.E)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.L.1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707" }, "r184": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/subtopic&trid=2196772" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10133-111534" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "15", "SubTopic": "30", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538" }, "r189": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(2)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544" }, "r19": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r190": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(1)(ii)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544" }, "r191": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "30", "Topic": "310", "URI": "http://asc.fasb.org/subtopic&trid=2196854" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82895541&loc=d3e18794-111554" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554" }, "r194": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "310", "URI": "http://asc.fasb.org/topic&trid=2196771" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=109979856&loc=d3e26853-111562" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765" }, "r20": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r21": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(31))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(3)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(4)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563" }, "r22": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(32))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27340-111563" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)-(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "740", "Subparagraph": "(a)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114775393&loc=SL49122993-202985" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "740", "Subparagraph": "(c)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114775393&loc=SL49122993-202985" }, "r228": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "325", "URI": "http://asc.fasb.org/topic&trid=2197064" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266" }, "r23": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(4))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r24": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.1)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(1)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(2)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(3)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275" }, "r246": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "350", "URI": "http://asc.fasb.org/topic&trid=2144416" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.12)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r251": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r253": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "360", "URI": "http://asc.fasb.org/topic&trid=2155823" }, "r254": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=77929361&loc=d3e25218-109307" }, "r255": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14615-108349" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14394-108349" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349" }, "r26": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14453-108349" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14472-108349" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355" }, "r264": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=115931803&loc=d3e12021-110248" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=115931803&loc=d3e12021-110248" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=115931803&loc=d3e12053-110248" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248" }, "r27": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.13)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=82913499&loc=d3e12803-110250" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(CFRR 211.02)", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21553-112644" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644" }, "r28": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.14)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21484-112644" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.3-04)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770" }, "r286": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "50", "Topic": "505", "URI": "http://asc.fasb.org/subtopic&trid=2208855" }, "r287": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "505", "URI": "http://asc.fasb.org/topic&trid=2208762" }, "r288": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045" }, "r29": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.17)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=108792157&loc=SL49130690-203046-203046" }, "r292": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "610", "URI": "http://asc.fasb.org/topic&trid=49130413" }, "r293": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "710", "URI": "http://asc.fasb.org/extlink&oid=6409733&loc=d3e19512-108361" }, "r294": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "30", "SubTopic": "10", "Topic": "710", "URI": "http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "710", "URI": "http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r3": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765" }, "r30": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19-26)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(7)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(01)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r309": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r31": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22 (b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r310": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r316": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r317": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(j)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r318": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r319": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(k)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r321": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(n)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r322": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920" }, "r323": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2410-114920" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2417-114920" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2439-114920" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(6)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "70", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942" }, "r335": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "715", "URI": "http://asc.fasb.org/topic&trid=2235017" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901" }, "r339": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.25)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r342": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(i)-(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r345": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)(iv)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(i)-(ii)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.28,29)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r352": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r353": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r354": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r355": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r356": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r357": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901" }, "r358": { "Name": "Accounting Standards Codification", "Paragraph": "2A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109197908&loc=SL79508275-113901" }, "r359": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79507997-165333" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29-31)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r360": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79507997-165333" }, "r361": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508013-165333" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508013-165333" }, "r363": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508029-165333" }, "r364": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508029-165333" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508043-165333" }, "r366": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508043-165333" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508057-165333" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109253770&loc=SL79508057-165333" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 14.F)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.3,4)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(c)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929" }, "r372": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929" }, "r373": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "718", "URI": "http://asc.fasb.org/topic&trid=2228938" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "35", "Subparagraph": "(b)", "Topic": "720", "URI": "http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848" }, "r375": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "720", "URI": "http://asc.fasb.org/topic&trid=2122503" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84176650&loc=d3e32247-109318" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84176650&loc=d3e32280-109318" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84176650&loc=d3e31917-109318" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319" }, "r383": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319" }, "r385": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32847-109319" }, "r39": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e526-108580" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319" }, "r392": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 6.I)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.7)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "05", "SubTopic": "30", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=65884525&loc=d3e40913-109327" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r40": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r400": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "740", "URI": "http://asc.fasb.org/topic&trid=2144680" }, "r401": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "05", "SubTopic": "10", "Subparagraph": "(a)-(d)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=6909625&loc=d3e227-128457" }, "r402": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460" }, "r404": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)(1)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(2)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(3)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463" }, "r409": { "Name": "Accounting Standards Codification", "Paragraph": "37", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464" }, "r41": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r410": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472" }, "r411": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472" }, "r412": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472" }, "r413": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477" }, "r414": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477" }, "r415": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r416": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(1)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r417": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(4)", "Topic": "805", "URI": "http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479" }, "r418": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "805", "URI": "http://asc.fasb.org/topic&trid=2303972" }, "r419": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=66022390&loc=d3e923-111674" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r420": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=d3e5283-111683" }, "r421": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683" }, "r422": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683" }, "r423": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r424": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r425": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c),(3)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "4J", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "83", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109257184&loc=d3e34841-113949" }, "r43": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i),(j),(k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r430": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959" }, "r433": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959" }, "r434": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959" }, "r436": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=109980867&loc=SL5708775-113959" }, "r438": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r44": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i-k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r441": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r442": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r443": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r444": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r445": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r446": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r447": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258" }, "r448": { "Name": "Accounting Standards Codification", "Paragraph": "2C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=SL7498348-110258" }, "r449": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(k)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r450": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=99377789&loc=SL6742756-110258" }, "r451": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "820", "URI": "http://asc.fasb.org/topic&trid=2155941" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740" }, "r453": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610" }, "r454": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611" }, "r455": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611" }, "r456": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=109250915&loc=d3e13476-108611" }, "r457": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=75032774&loc=SL75039408-165497" }, "r458": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906" }, "r459": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580" }, "r460": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399" }, "r461": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399" }, "r462": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399" }, "r463": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400" }, "r464": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737" }, "r465": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(4)", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738" }, "r466": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977" }, "r467": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977" }, "r468": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r469": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580" }, "r470": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r471": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r472": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(1)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r473": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(2)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r474": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(3)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r475": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(4)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980" }, "r477": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980" }, "r478": { "Name": "Accounting Standards Codification", "Paragraph": "53", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971" }, "r479": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/subtopic&trid=77888251" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e640-108580" }, "r480": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r481": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r482": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864" }, "r483": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864" }, "r484": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864" }, "r485": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864" }, "r486": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864" }, "r487": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "850", "URI": "http://asc.fasb.org/topic&trid=2122745" }, "r488": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r489": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e681-108580" }, "r490": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r491": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719" }, "r492": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(b)(1)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729" }, "r493": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "50", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745" }, "r494": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(c)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=68078379&loc=d3e122596-111746" }, "r495": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746" }, "r496": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746" }, "r497": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746" }, "r498": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746" }, "r499": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "340", "Topic": "928", "URI": "http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(13))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580" }, "r500": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447" }, "r501": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447" }, "r502": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447" }, "r503": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447" }, "r504": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447" }, "r505": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447" }, "r506": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447" }, "r507": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447" }, "r508": { "Name": "Accounting Standards Codification", "Paragraph": "35", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(h)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447" }, "r509": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e689-108580" }, "r510": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447" }, "r511": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447" }, "r512": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(1)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447" }, "r513": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(2)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447" }, "r514": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "55", "SubTopic": "235", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=34713648&loc=d3e63123-109448" }, "r515": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "05", "SubTopic": "20", "Topic": "940", "URI": "http://asc.fasb.org/extlink&oid=68070981&loc=d3e40544-110947" }, "r516": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "20", "Topic": "940", "URI": "http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953" }, "r517": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(1)(a))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r518": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(1))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r519": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(10))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "17A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL34724391-108580" }, "r520": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(11))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r521": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(13))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r522": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(15)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r523": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(15)(5))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r524": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(16))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r525": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(17))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r526": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r527": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(7)(e)(1)(i))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r528": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(7))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r529": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.12)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "17B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL34724394-108580" }, "r530": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.13(3)(a))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r531": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.13,16)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r532": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.15(5))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r533": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.15)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r534": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.17)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r535": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.6(a)(1))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r536": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.7(d))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r537": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.7(e))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r538": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.7)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878" }, "r539": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(13))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580" }, "r540": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(15))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r541": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(22))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r542": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(23))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r543": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.1)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r544": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.1-5)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r545": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.10)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r546": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.12)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r547": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.13(a),(b))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r548": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.13(h))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r549": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.13)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580" }, "r550": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.14(b))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r551": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.14(d))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r552": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.14)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r553": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.2)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r554": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.4)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r555": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.6)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r556": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.8)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r557": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.9)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260" }, "r558": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6477933&loc=d3e60009-112784" }, "r559": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.9-06)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6882215&loc=d3e537971-122884" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580" }, "r560": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62557-112803" }, "r561": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r562": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r563": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r564": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(d)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r565": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803" }, "r566": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "405", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=50488274&loc=d3e64164-112818" }, "r567": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "405", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=50488274&loc=d3e64164-112818" }, "r568": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822" }, "r569": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64684-112823" }, "r57": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580" }, "r570": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823" }, "r571": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823" }, "r572": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Subparagraph": "(c)(1)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826" }, "r573": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826" }, "r574": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958569-112826" }, "r575": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826" }, "r576": { "Name": "Accounting Standards Codification", "Paragraph": "1C", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958572-112826" }, "r577": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958573-112826" }, "r578": { "Name": "Accounting Standards Codification", "Paragraph": "1E", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958574-112826" }, "r579": { "Name": "Accounting Standards Codification", "Paragraph": "1F", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958575-112826" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580" }, "r580": { "Name": "Accounting Standards Codification", "Paragraph": "1G", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826" }, "r581": { "Name": "Accounting Standards Codification", "Paragraph": "1H", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Subparagraph": "(c)(1)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826" }, "r582": { "Name": "Accounting Standards Codification", "Paragraph": "1H", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Subparagraph": "(c)(2)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826" }, "r583": { "Name": "Accounting Standards Codification", "Paragraph": "1H", "Publisher": "FASB", "Section": "50", "SubTopic": "505", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826" }, "r584": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "825", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=108315417&loc=d3e61044-112788" }, "r585": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(15)(b)(2))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r586": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(16)(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r587": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r588": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r589": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(10))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114867106&loc=d3e557-108580" }, "r590": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(12))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r591": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(15)(5))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r592": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(2))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r593": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r594": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(25))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r595": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r596": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(5))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r597": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r598": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.(a),19)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r599": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.15(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(14))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=109228884&loc=d3e1436-108581" }, "r600": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(18))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r601": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(19))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r602": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(3)(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r603": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(4))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r604": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(8))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r605": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.3(a))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263" }, "r606": { "Name": "Accounting Standards Codification", "Paragraph": "4H", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=99384497&loc=SL65671331-158438" }, "r607": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=66023616&loc=SL35737432-115832" }, "r608": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.6-04(6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996" }, "r609": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "220", "Subparagraph": "(k)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=114873831&loc=SL114874205-224268" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(1)(e))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868656-224227" }, "r610": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.6-07.2(a),(b),(c),(d))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=114873854&loc=SL114874292-224272" }, "r611": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12(2)(i))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010" }, "r612": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12C(1)(a))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010" }, "r613": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13(1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010" }, "r614": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column A))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=50485924&loc=d3e611379-123010" }, "r615": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "946", "URI": "http://asc.fasb.org/subtopic&trid=2324412" }, "r616": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "948", "URI": "http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998" }, "r617": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "948", "URI": "http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998" }, "r618": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Topic": "948", "URI": "http://asc.fasb.org/extlink&oid=82921678&loc=d3e48700-111005" }, "r619": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "310", "Subparagraph": "(SX 210.12-29(Footnote 4))", "Topic": "948", "URI": "http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014" }, "r62": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(210.5-03(11))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r620": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "450", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6049-115624" }, "r621": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "450", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6052-115624" }, "r622": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "740", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650" }, "r623": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "360", "Subparagraph": "(SX 210.12-28(Footnote 4))", "Topic": "970", "URI": "http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024" }, "r624": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b" }, "r625": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "d1-1" }, "r626": { "Name": "Form 20-F", "Publisher": "SEC", "Section": "Item 18", "Subsection": "Instruction 2" }, "r627": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1-" }, "r628": { "Name": "Forms 10-K, 20-F, 40-F", "Number": "240", "Publisher": "SEC", "Section": "15", "Subsection": "d-1" }, "r629": { "Name": "Industry Guide", "Number": "3", "Paragraph": "D-E", "Publisher": "SEC", "Section": "V" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(10))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r630": { "Name": "Regulation 12B", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r631": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405" }, "r632": { "Footnote": "4", "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "12", "Subsection": "28" }, "r633": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "a", "Publisher": "SEC", "Section": "12", "Subsection": "04" }, "r634": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "i", "Publisher": "SEC", "Section": "3", "Subsection": "10" }, "r635": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "c", "Publisher": "SEC", "Section": "5", "Subparagraph": "Schedule I", "Subsection": "04" }, "r636": { "Name": "Regulation S-X (SX)", "Number": "210", "Paragraph": "c", "Publisher": "SEC", "Section": "7", "Subparagraph": "Schedule II", "Subsection": "05" }, "r637": { "Name": "Regulation S-X (SX)", "Number": "210", "Publisher": "SEC", "Section": "9", "Subsection": "06" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(20))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r65": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(21))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(b)(4))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(b)(7)(c))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(b)(9)(a))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.4)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(17))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.6)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227" }, "r72": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "220", "URI": "http://asc.fasb.org/topic&trid=2134417" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3151-108585" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a),(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a),(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r8": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3337-108585" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3000-108585" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3461-108585" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "21C", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=SL94080552-108585" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(20))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3044-108585" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=109223946&loc=d3e3095-108585" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=98513485&loc=d3e4273-108586" } }, "version": "2.1" }