{ "instance": { "fisi-10q_20200930.htm": { "axisCustom": 0, "axisStandard": 37, "contextCount": 575, "dts": { "calculationLink": { "local": [ "fisi-20200930_cal.xml" ] }, "definitionLink": { "local": [ "fisi-20200930_def.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-eedm-def-2020-01-31.xml", "http://xbrl.fasb.org/srt/2020/elts/srt-eedm1-def-2020-01-31.xml" ] }, "inline": { "local": [ "fisi-10q_20200930.htm" ] }, "labelLink": { "local": [ "fisi-20200930_lab.xml" ], "remote": [ "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-doc-2020-01-31.xml", "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml" ] }, "presentationLink": { "local": [ "fisi-20200930_pre.xml" ] }, "referenceLink": { "remote": [ "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-ref-2020-01-31.xml", "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml" ] }, "schema": { "local": [ "fisi-20200930.xsd" ], "remote": [ "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/2005/xbrldt-2005.xsd", "https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd", "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd", "https://xbrl.sec.gov/currency/2020/currency-2020-01-31.xsd", "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd", "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd", "https://xbrl.sec.gov/exch/2020/exch-2020-01-31.xsd", "http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd", "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd", "https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd", "https://xbrl.sec.gov/sic/2020/sic-2020-01-31.xsd", "http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.xsd", "http://xbrl.fasb.org/srt/2020/elts/srt-types-2020-01-31.xsd", "http://xbrl.fasb.org/srt/2020/elts/srt-roles-2020-01-31.xsd", "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd", "http://xbrl.fasb.org/us-gaap/2020/elts/us-types-2020-01-31.xsd", "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "http://xbrl.fasb.org/us-gaap/2020/elts/us-parts-codification-2020-01-31.xsd", "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd" ] } }, "elementCount": 745, "entityCount": 1, "hidden": { "http://fasb.org/us-gaap/2020-01-31": 7, "http://xbrl.sec.gov/dei/2019-01-31": 5, "total": 12 }, "keyCustom": 73, "keyStandard": 448, "memberCustom": 30, "memberStandard": 85, "nsprefix": "fisi", "nsuri": "http://www.fiiwarsaw.com/20200930", "report": { "R1": { "firstAnchor": { "ancestors": [ "p", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "100000 - Document - Document And Entity Information", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation", "shortName": "Document And Entity Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "p", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100090 - Disclosure - Restructuring Charges", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringCharges", "shortName": "Restructuring Charges", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100100 - Disclosure - Earnings Per Common Share (\"EPS\")", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPS", "shortName": "Earnings Per Common Share (\"EPS\")", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:EarningsPerShareTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100110 - Disclosure - Investment Securities", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecurities", "shortName": "Investment Securities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100120 - Disclosure - Loans", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoans", "shortName": "Loans", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100130 - Disclosure - Leases", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeases", "shortName": "Leases", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeasesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100140 - Disclosure - Goodwill and Other Intangible Assets", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssets", "shortName": "Goodwill and Other Intangible Assets", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "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": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100150 - Disclosure - Derivative Instruments and Hedging Activities", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivities", "shortName": "Derivative Instruments and Hedging Activities", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100160 - Disclosure - Shareholders' Equity", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquity", "shortName": "Shareholders' Equity", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100170 - Disclosure - Accumulated Other Comprehensive Income (Loss)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLoss", "shortName": "Accumulated Other Comprehensive Income (Loss)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ComprehensiveIncomeNoteTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100180 - Disclosure - Share-Based Compensation Plans", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlans", "shortName": "Share-Based Compensation Plans", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CashAndDueFromBanks", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100010 - Statement - Consolidated Statements of Financial Condition (Unaudited)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "shortName": "Consolidated Statements of Financial Condition (Unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CashAndDueFromBanks", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100190 - Disclosure - Employee Benefit Plans", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlans", "shortName": "Employee Benefit Plans", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100200 - Disclosure - Commitments and Contingencies", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingencies", "shortName": "Commitments and Contingencies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "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": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100210 - Disclosure - Fair Value Measurements", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurements", "shortName": "Fair Value Measurements", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100220 - Disclosure - Segment Reporting", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReporting", "shortName": "Segment Reporting", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SegmentReportingDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "fisi:NatureOfBusinessOperationsPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100230 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies", "shortName": "Basis of Presentation and Summary of Significant Accounting Policies (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "fisi:NatureOfBusinessOperationsPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "fisi:CashFlowReportingPolicyTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100240 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables", "shortName": "Basis of Presentation and Summary of Significant Accounting Policies (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "fisi:CashFlowReportingPolicyTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100250 - Disclosure - Restructuring Charges (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesTables", "shortName": "Restructuring Charges (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R27": { "firstAnchor": { "ancestors": [ "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100260 - Disclosure - Earnings Per Common Share (\"EPS\") (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSTables", "shortName": "Earnings Per Common Share (\"EPS\") (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:UnrealizedGainLossOnInvestmentsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100270 - Disclosure - Investment Securities (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesTables", "shortName": "Investment Securities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:UnrealizedGainLossOnInvestmentsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100280 - Disclosure - Loans (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables", "shortName": "Loans (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLoss", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100020 - Statement - Consolidated Statements of Financial Condition (Unaudited) (Parenthetical)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical", "shortName": "Consolidated Statements of Financial Condition (Unaudited) (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20191231", "decimals": "-3", "lang": null, "name": "us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLoss", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R30": { "firstAnchor": { "ancestors": [ "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "fisi:ScheduleOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100290 - Disclosure - Leases (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesTables", "shortName": "Leases (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "fisi:ScheduleOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100300 - Disclosure - Goodwill and Other Intangible Assets (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables", "shortName": "Goodwill and Other Intangible Assets (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfGoodwillTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100310 - Disclosure - Derivative Instruments and Hedging Activities (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesTables", "shortName": "Derivative Instruments and Hedging Activities (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfStockByClassTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100320 - Disclosure - Shareholders' Equity (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityTables", "shortName": "Shareholders' Equity (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfStockByClassTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100330 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossTables", "shortName": "Accumulated Other Comprehensive Income (Loss) (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfComprehensiveIncomeLossTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "fisi:ScheduleOfShareBasedCompensationRestrictedStockUnitsAndPerformanceShareUnitsActivityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100340 - Disclosure - Share-Based Compensation Plans (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansTables", "shortName": "Share-Based Compensation Plans (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "fisi:ScheduleOfShareBasedCompensationRestrictedStockUnitsAndPerformanceShareUnitsActivityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100350 - Disclosure - Employee Benefit Plans (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansTables", "shortName": "Employee Benefit Plans (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100360 - Disclosure - Commitments and Contingencies (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesTables", "shortName": "Commitments and Contingencies (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueOffBalanceSheetRisksTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100370 - Disclosure - Fair Value Measurements (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsTables", "shortName": "Fair Value Measurements (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "us-gaap:SegmentReportingDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100380 - Disclosure - Segment Reporting (Tables)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingTables", "shortName": "Segment Reporting (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "us-gaap:SegmentReportingDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestAndFeeIncomeLoansAndLeases", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100030 - Statement - Consolidated Statements of Income (Unaudited)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited", "shortName": "Consolidated Statements of Income (Unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestAndFeeIncomeLoansAndLeases", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RetainedEarningsAccumulatedDeficit", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100390 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "shortName": "Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:CreditLossFinancialInstrumentPolicyTextBlock", "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "INF", "lang": null, "name": "fisi:NumberOfIdentifiedPortfolioSegments", "reportCount": 1, "unique": true, "unitRef": "U_fisiSegment", "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock", "fisi:CashFlowReportingPolicyTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestPaidNet", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100400 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Summary of Supplemental Cash Flow Information) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails", "shortName": "Basis of Presentation and Summary of Significant Accounting Policies (Summary of Supplemental Cash Flow Information) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock", "fisi:CashFlowReportingPolicyTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestPaidNet", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "p", "us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200717_20200717", "decimals": "INF", "first": true, "lang": null, "name": "fisi:NumberOfBankBranchClosure", "reportCount": 1, "unique": true, "unitRef": "U_fisiBranch", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100410 - Disclosure - Restructuring Charges (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails", "shortName": "Restructuring Charges (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200717_20200717", "decimals": "INF", "first": true, "lang": null, "name": "fisi:NumberOfBankBranchClosure", "reportCount": 1, "unique": true, "unitRef": "U_fisiBranch", "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RestructuringCosts", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100420 - Disclosure - Restructuring Charges (Summary of Consolidated Statements of Income Classification of Restructuring Charges) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails", "shortName": "Restructuring Charges (Summary of Consolidated Statements of Income Classification of Restructuring Charges) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapIncomeStatementLocationAxis_fisiSalariesAndEmployeeBenefitsMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:SeveranceCosts1", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R44": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:RestructuringCosts", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100430 - Disclosure - Restructuring Charges (Summary of Changes in Restructuring Reserve) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfChangesInRestructuringReserveDetails", "shortName": "Restructuring Charges (Summary of Changes in Restructuring Reserve) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfRestructuringReserveByTypeOfCostTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:PaymentsForRestructuring", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R45": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100440 - Disclosure - Earnings Per Common Share (\"EPS\") (Reconciliation of Earnings and Shares Used in Calculating Basic and Diluted EPS) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails", "shortName": "Earnings Per Common Share (\"EPS\") (Reconciliation of Earnings and Shares Used in Calculating Basic and Diluted EPS) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:WeightedAverageNumberOfSharesIssuedBasic", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" } }, "R46": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100450 - Disclosure - Earnings Per Common Share (\"EPS\") (Shares Excluded from Computation of Diluted EPS) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails", "shortName": "Earnings Per Common Share (\"EPS\") (Shares Excluded from Computation of Diluted EPS) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:EarningsPerShareTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" } }, "R47": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:UnrealizedGainLossOnInvestmentsTableTextBlock", "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100460 - Disclosure - Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "shortName": "Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:UnrealizedGainLossOnInvestmentsTableTextBlock", "us-gaap:InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R48": { "firstAnchor": { "ancestors": [ "p", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-5", "first": true, "lang": null, "name": "fisi:DebtSecuritiesAvailableForSaleAndHeldToMaturityRestricted", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100470 - Disclosure - Investment Securities (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails", "shortName": "Investment Securities (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20191231", "decimals": "-5", "lang": null, "name": "fisi:DebtSecuritiesAvailableForSaleAndHeldToMaturityRestricted", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R49": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:RealizedGainLossOnInvestmentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100480 - Disclosure - Investment Securities (Sales of Securities Available for Sale) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesSalesOfSecuritiesAvailableForSaleDetails", "shortName": "Investment Securities (Sales of Securities Available for Sale) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:RealizedGainLossOnInvestmentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:DebtSecuritiesAvailableForSaleRealizedGain", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100040 - Statement - Consolidated Statements of Comprehensive Income (Unaudited)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited", "shortName": "Consolidated Statements of Comprehensive Income (Unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R50": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100490 - Disclosure - Investment Securities (Scheduled Maturities of Securities Available for Sale and Securities Held to Maturity) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails", "shortName": "Investment Securities (Scheduled Maturities of Securities Available for Sale and Securities Held to Maturity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R51": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100500 - Disclosure - Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "shortName": "Investment Securities (Investments Gross Unrealized Losses and Fair Value) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R52": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableGrossCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100510 - Disclosure - Loans (Loan Portfolio) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "shortName": "Loans (Loan Portfolio) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansAndLeasesReceivableGrossCarryingAmount", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R53": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100520 - Disclosure - Loans (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails", "shortName": "Loans (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "INF", "lang": null, "name": "us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R54": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:PastDueFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableRecordedInvestmentPastDue", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100530 - Disclosure - Loans (Recorded Investment by Loan Class in Current and Nonaccrual Loans) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "shortName": "Loans (Recorded Investment by Loan Class in Current and Nonaccrual Loans) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:PastDueFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:FinancingReceivableRecordedInvestmentCurrent", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R55": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "fisi:CollateralDependentLoansOnBusinessAssets", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100540 - Disclosure - Loans (Summary of Collateral Dependent Loans) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails", "shortName": "Loans (Summary of Collateral Dependent Loans) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "fisi:CollateralDependentLoansOnBusinessAssets", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R56": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:FinancingReceivableCreditQualityIndicatorsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_fisiCommercialAndIndustrialMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100550 - Disclosure - Loans (Commercial Loan Portfolio Categorized by Internally Assigned Asset Classification) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "shortName": "Loans (Commercial Loan Portfolio Categorized by Internally Assigned Asset Classification) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:FinancingReceivableCreditQualityIndicatorsTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_fisiCommercialAndIndustrialMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R57": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaapResidentialMortgageMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100560 - Disclosure - Loans (Retail Loan Portfolio Categorized by Performance Status) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails", "shortName": "Loans (Retail Loan Portfolio Categorized by Performance Status) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaapResidentialMortgageMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R58": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200630", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableAllowanceForCreditLosses", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100570 - Disclosure - Loans (Changes in the Allowance for Credit Losses) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "shortName": "Loans (Changes in the Allowance for Credit Losses) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R59": { "firstAnchor": { "ancestors": [ "p", "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseDescription", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100580 - Disclosure - Leases (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesNarrativeDetails", "shortName": "Leases (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:LesseeOperatingLeaseDescription", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R6": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20181231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100050 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "shortName": "Consolidated Statements of Changes in Shareholders' Equity (Unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapStatementEquityComponentsAxis_us-gaapRetainedEarningsMember_20190101_20190331", "decimals": "-3", "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R60": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "fisi:ScheduleOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesTableTextBlock", "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "fisi:OperatingLeaseRightOfUseAssetGross", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100590 - Disclosure - Leases (Summary of Classification of Right of Use Assets and Lease Liabilities (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails", "shortName": "Leases (Summary of Classification of Right of Use Assets and Lease Liabilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "fisi:ScheduleOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesTableTextBlock", "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "fisi:OperatingLeaseRightOfUseAssetGross", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R61": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "fisi:ScheduleOfLeaseCostsAndOtherLeaseInformationTableTextBlock", "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OperatingLeaseCost", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100600 - Disclosure - Leases (Summary of Lease Costs and Other Lease Information (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails", "shortName": "Leases (Summary of Lease Costs and Other Lease Information (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "fisi:ScheduleOfLeaseCostsAndOtherLeaseInformationTableTextBlock", "us-gaap:LesseeOperatingLeasesTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OperatingLeaseCost", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R62": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100610 - Disclosure - Leases (Summary of Future Minimum Payments Under Non-cancellable Operating Leases (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails", "shortName": "Leases (Summary of Future Minimum Payments Under Non-cancellable Operating Leases (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R63": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfGoodwillTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100630 - Disclosure - Goodwill and Other Intangible Assets (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "shortName": "Goodwill and Other Intangible Assets (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapStatementBusinessSegmentsAxis_fisiBankingSegmentMember_20200701_20200930", "decimals": "INF", "lang": null, "name": "us-gaap:GoodwillImpairmentLoss", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R64": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfGoodwillTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20191231", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100640 - Disclosure - Goodwill and Other Intangible Assets (Changes in Carrying Amount of Goodwill) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "shortName": "Goodwill and Other Intangible Assets (Changes in Carrying Amount of Goodwill) (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R65": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsGross", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100650 - Disclosure - Goodwill and Other Intangible Assets (Gross Carrying Amount Accumulated Amortization and Net Book Value) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails", "shortName": "Goodwill and Other Intangible Assets (Gross Carrying Amount Accumulated Amortization and Net Book Value) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsGross", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R66": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100660 - Disclosure - Goodwill and Other Intangible Assets (Estimated Amortization Expense of Other Intangible Assets) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails", "shortName": "Goodwill and Other Intangible Assets (Estimated Amortization Expense of Other Intangible Assets) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R67": { "firstAnchor": { "ancestors": [ "p", "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100670 - Disclosure - Derivative Instruments and Hedging Activities (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails", "shortName": "Derivative Instruments and Hedging Activities (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R68": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapHedgingDesignationAxis_us-gaapDesignatedAsHedgingInstrumentMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DerivativeNotionalAmount", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100680 - Disclosure - Derivative Instruments and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "shortName": "Derivative Instruments and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapBalanceSheetLocationAxis_us-gaapOtherLiabilitiesMember_us-gaapHedgingDesignationAxis_us-gaapDesignatedAsHedgingInstrumentMember_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:DerivativeFairValueOfDerivativeLiability", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R69": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapDerivativeInstrumentRiskAxis_us-gaapInterestRateSwapMember_us-gaapHedgingDesignationAxis_us-gaapNondesignatedMember_20200930", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100690 - Disclosure - Derivative Instruments and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Parenthetical) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails", "shortName": "Derivative Instruments and Hedging Activities (Fair Values of Derivative Instruments on the Balance Sheet) (Parenthetical) (Details)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapDerivativeInstrumentRiskAxis_us-gaapInterestRateSwapMember_us-gaapHedgingDesignationAxis_us-gaapNondesignatedMember_20200930", "decimals": "-5", "first": true, "lang": null, "name": "us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:CommonStockDividendsPerShareDeclared", "reportCount": 1, "unitRef": "U_iso4217USD_xbrlishares", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100060 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "shortName": "Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200401_20200630", "decimals": "INF", "lang": null, "name": "us-gaap:CommonStockDividendsPerShareDeclared", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD_xbrlishares", "xsiNil": "false" } }, "R70": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DerivativeGainLossOnDerivativeNet", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100700 - Disclosure - Derivative Instruments and Hedging Activities (Effect of Derivative Instruments on the Income Statement) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "shortName": "Derivative Instruments and Hedging Activities (Effect of Derivative Instruments on the Income Statement) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapHedgingDesignationAxis_us-gaapNondesignatedMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:DerivativeGainLossOnDerivativeNet", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R71": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20190630", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:CommonStockSharesOutstanding", "reportCount": 1, "unitRef": "U_xbrlishares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100710 - Disclosure - Shareholders' Equity (Changes in Shares of Common Stock) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "shortName": "Shareholders' Equity (Changes in Shares of Common Stock) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20181231", "decimals": "INF", "lang": null, "name": "us-gaap:CommonStockSharesIssued", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" } }, "R72": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfComprehensiveIncomeLossTableTextBlock", "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100720 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Components of Other Comprehensive Income (Loss)) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails", "shortName": "Accumulated Other Comprehensive Income (Loss) (Components of Other Comprehensive Income (Loss)) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfComprehensiveIncomeLossTableTextBlock", "us-gaap:ComprehensiveIncomeNoteTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R73": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200630", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100730 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss)) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "shortName": "Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss)) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapStatementEquityComponentsAxis_us-gaapAccumulatedGainLossNetCashFlowHedgeParentMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R74": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DebtAndEquitySecuritiesGainLoss", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100740 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Amounts Reclassified Out of Each Component Of Accumulated Other Comprehensive Income (Loss)) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "shortName": "Accumulated Other Comprehensive Income (Loss) (Amounts Reclassified Out of Each Component Of Accumulated Other Comprehensive Income (Loss)) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapStatementEquityComponentsAxis_us-gaapAccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R75": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapAwardTypeAxis_us-gaapRestrictedStockUnitsRSUMember_20200101_20200930", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100750 - Disclosure - Share-Based Compensation Plans (Summary Of Restricted Stock Units And Performance Share Units Activity) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails", "shortName": "Share-Based Compensation Plans (Summary Of Restricted Stock Units And Performance Share Units Activity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapAwardTypeAxis_us-gaapRestrictedStockUnitsRSUMember_20200101_20200930", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" } }, "R76": { "firstAnchor": { "ancestors": [ "p", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100760 - Disclosure - Share-Based Compensation Plans (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "shortName": "Share-Based Compensation Plans (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R77": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapAwardTypeAxis_fisiRestrictedStockAwardsAndRestrictedStockUnitsMember_20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100770 - Disclosure - Share-Based Compensation Plans (Summary of Restricted Stock Awards and Restricted Stock Units Activity) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails", "shortName": "Share-Based Compensation Plans (Summary of Restricted Stock Awards and Restricted Stock Units Activity) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapAwardTypeAxis_fisiRestrictedStockAwardsAndRestrictedStockUnitsMember_20191231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "reportCount": 1, "unique": true, "unitRef": "U_xbrlishares", "xsiNil": "false" } }, "R78": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ShareBasedCompensation", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100780 - Disclosure - Share-Based Compensation Plans (Share-Based Compensation Expense Included In Consolidated Statements Of Income) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails", "shortName": "Share-Based Compensation Plans (Share-Based Compensation Expense Included In Consolidated Statements Of Income) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapIncomeStatementLocationAxis_fisiSalariesAndEmployeeBenefitsMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:ShareBasedCompensation", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R79": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanServiceCost", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100790 - Disclosure - Employee Benefit Plans (Components of Net Periodic Benefit Expense) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails", "shortName": "Employee Benefit Plans (Components of Net Periodic Benefit Expense) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:DefinedBenefitPlanServiceCost", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProfitLoss", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "100070 - Statement - Consolidated Statements of Cash Flows (Unaudited)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited", "shortName": "Consolidated Statements of Cash Flows (Unaudited)", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:ProfitLoss", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R80": { "firstAnchor": { "ancestors": [ "p", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_srtRangeAxis_srtMinimumMember_srtStatementScenarioAxis_srtScenarioForecastMember_20200101_20201231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100800 - Disclosure - Employee Benefit Plans (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "shortName": "Employee Benefit Plans (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_srtRangeAxis_srtMinimumMember_srtStatementScenarioAxis_srtScenarioForecastMember_20200101_20201231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:DefinedContributionPlanEmployerDiscretionaryContributionAmount", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R81": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancialInstrumentAxis_us-gaapCommitmentsToExtendCreditMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CommitmentsAndContingencies", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100810 - Disclosure - Commitments and Contingencies (Off-Balance Sheet Commitments) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails", "shortName": "Commitments and Contingencies (Off-Balance Sheet Commitments) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancialInstrumentAxis_us-gaapCommitmentsToExtendCreditMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:CommitmentsAndContingencies", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R82": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FinancingReceivableAllowanceForCreditLosses", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100820 - Disclosure - Commitments and Contingencies (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "shortName": "Commitments and Contingencies (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_us-gaapUnfundedLoanCommitmentMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "fisi:CreditLossExpense", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R83": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100830 - Disclosure - Fair Value Measurements (Assets Measured at Fair Value on a Recurring and Non-Recurring Basis) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "shortName": "Fair Value Measurements (Assets Measured at Fair Value on a Recurring and Non-Recurring Basis) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFairValueByMeasurementFrequencyAxis_us-gaapFairValueMeasurementsRecurringMember_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:LiabilitiesFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R84": { "firstAnchor": { "ancestors": [ "p", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100840 - Disclosure - Fair Value Measurements (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails", "shortName": "Fair Value Measurements (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:FairValueAssetsLevel1ToLevel2TransfersAmount", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R85": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFairValueByAssetClassAxis_fisiCollateralDependentFinancingReceivableMember_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AssetsFairValueDisclosure", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100850 - Disclosure - Fair Value Measurements (Additional Quantitative Information about Assets Measured at Fair Value on a Recurring and Non-Recurring Basis) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "shortName": "Fair Value Measurements (Additional Quantitative Information about Assets Measured at Fair Value on a Recurring and Non-Recurring Basis) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_srtRangeAxis_srtWeightedAverageMember_us-gaapFairValueByAssetClassAxis_fisiCollateralDependentFinancingReceivableMember_us-gaapMeasurementInputTypeAxis_us-gaapMeasurementInputComparabilityAdjustmentMember_us-gaapValuationTechniqueAxis_fisiValuationTechniqueAppraisalOfCollateralMember_20200101_20200930", "decimals": "3", "lang": null, "name": "fisi:FairValueMeasurementWithUnobservableInputValuePercentage", "reportCount": 1, "unique": true, "unitRef": "U_xbrlipure", "xsiNil": "false" } }, "R86": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:AvailableForSaleSecuritiesDebtSecurities", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100860 - Disclosure - Fair Value Measurements (Carrying Amount, Estimated Fair Value, and Placement in Fair Value Hierarchy of Financial Instruments) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails", "shortName": "Fair Value Measurements (Carrying Amount, Estimated Fair Value, and Placement in Fair Value Hierarchy of Financial Instruments) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "ix:continuation", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapFairValueByFairValueHierarchyLevelAxis_us-gaapFairValueInputsLevel1Member_us-gaapFairValueByMeasurementBasisAxis_us-gaapCarryingReportedAmountFairValueDisclosureMember_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:CashAndCashEquivalentsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R87": { "firstAnchor": { "ancestors": [ "p", "us-gaap:SegmentReportingDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:NumberOfReportableSegments", "reportCount": 1, "unique": true, "unitRef": "U_fisiSegment", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100870 - Disclosure - Segment Reporting (Narrative) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingNarrativeDetails", "shortName": "Segment Reporting (Narrative) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "us-gaap:SegmentReportingDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:NumberOfReportableSegments", "reportCount": 1, "unique": true, "unitRef": "U_fisiSegment", "xsiNil": "false" } }, "R88": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ScheduleOfGoodwillTextBlock", "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100880 - Disclosure - Segment Reporting (Business Segment Assets) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "shortName": "Segment Reporting (Business Segment Assets) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock", "us-gaap:SegmentReportingDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_srtConsolidationItemsAxis_us-gaapOperatingSegmentsMember_us-gaapStatementBusinessSegmentsAxis_fisiBankingSegmentMember_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:Goodwill", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R89": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200701_20200930", "decimals": "-3", "first": true, "lang": null, "name": "us-gaap:InterestIncomeExpenseNet", "reportCount": 1, "unitRef": "U_iso4217USD", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100890 - Disclosure - Segment Reporting (Business Segment Profit (Loss)) (Details)", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "shortName": "Segment Reporting (Business Segment Profit (Loss)) (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "us-gaap:ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock", "us-gaap:SegmentReportingDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_srtConsolidationItemsAxis_us-gaapOperatingSegmentsMember_us-gaapStatementBusinessSegmentsAxis_fisiBankingSegmentMember_20200701_20200930", "decimals": "-3", "lang": null, "name": "us-gaap:InterestIncomeExpenseNet", "reportCount": 1, "unique": true, "unitRef": "U_iso4217USD", "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "100080 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies", "role": "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPolicies", "shortName": "Basis of Presentation and Summary of Significant Accounting Policies", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_20200101_20200930", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R9999": { "firstAnchor": { "ancestors": [ "p", "td", "tr", "table", "div", "ix:continuation", "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "body", "html" ], "baseRef": "fisi-10q_20200930.htm", "contextRef": "C_0000862831_us-gaapStatementEquityComponentsAxis_us-gaapCommonStockMember_20200930", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:CommonStockSharesOutstanding", "reportCount": 1, "unitRef": "U_xbrlishares", "xsiNil": "false" }, "groupType": "", "isDefault": "false", "longName": "Uncategorized Items - fisi-10q_20200930.htm", "role": "http://xbrl.sec.gov/role/uncategorizedFacts", "shortName": "Uncategorized Items - fisi-10q_20200930.htm", "subGroupType": "", "uniqueAnchor": null } }, "segmentCount": 119, "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_CoverAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Cover page.", "label": "Cover [Abstract]" } } }, "localname": "CoverAbstract", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "xbrltype": "stringItemType" }, "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "gMonthDayItemType" }, "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", "verboseLabel": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "dateItemType" }, "dei_DocumentQuarterlyReport": { "auth_ref": [ "r692" ], "lang": { "en-US": { "role": { "documentation": "Boolean flag that is true only for a form used as an quarterly report.", "label": "Document Quarterly Report", "terseLabel": "Document Quarterly Report" } } }, "localname": "DocumentQuarterlyReport", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r693" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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 Line1", "terseLabel": "Entity Address, Address Line One" } } }, "localname": "EntityAddressAddressLine1", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r694" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r694" ], "lang": { "en-US": { "role": { "documentation": "Indicate if registrant meets the emerging growth company criteria.", "label": "Entity Emerging Growth Company", "terseLabel": "Entity Emerging Growth Company" } } }, "localname": "EntityEmergingGrowthCompany", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r694" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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 Country Code", "terseLabel": "Entity Incorporation, State or Country Code" } } }, "localname": "EntityIncorporationStateCountryCode", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r695" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r694" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r694" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r694" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r694" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "employerIdItemType" }, "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_Security12bTitle": { "auth_ref": [ "r690" ], "lang": { "en-US": { "role": { "documentation": "Title of a 12(b) registered security.", "label": "Security12b Title", "terseLabel": "Title of 12(b) Security" } } }, "localname": "Security12bTitle", "nsuri": "http://xbrl.sec.gov/dei/2019-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "securityTitleItemType" }, "dei_SecurityExchangeName": { "auth_ref": [ "r691" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "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://www.fiiwarsaw.com/20200930/taxonomy/role/DocumentDocumentAndEntityInformation" ], "xbrltype": "tradingSymbolItemType" }, "fisi_AllowanceForCreditLossesAmortizedCost": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Allowance for credit losses, amortized cost.", "label": "Allowance For Credit Losses Amortized Cost", "terseLabel": "Allowance for credit losses, Amortized Cost" } } }, "localname": "AllowanceForCreditLossesAmortizedCost", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "fisi_AnticipatesAnnualExpenseSavingsBranchClosures": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Anticipates annual expense savings branch closures.", "label": "Anticipates Annual Expense Savings Branch Closures", "terseLabel": "Anticipates annual expense savings branch closures" } } }, "localname": "AnticipatesAnnualExpenseSavingsBranchClosures", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_AtmAndDebitCard": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10200.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "ATM and debit card", "label": "Atm And Debit Card", "terseLabel": "ATM and debit card" } } }, "localname": "AtmAndDebitCard", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_BankingSegmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Banking Segment [Member]", "label": "Banking Segment [Member]", "terseLabel": "Banking [Member]" } } }, "localname": "BankingSegmentMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "domainItemType" }, "fisi_BelowInvestmentGradeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Below investment grade.", "label": "Below Investment Grade [Member]", "terseLabel": "Below Investment Grade [Member]" } } }, "localname": "BelowInvestmentGradeMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_COVIDNineteenMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "COVID 19.", "label": "C O V I D Nineteen [Member]", "terseLabel": "COVID-19 [Member]" } } }, "localname": "COVIDNineteenMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_CashFlowReportingPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Cash flow reporting.", "label": "Cash Flow Reporting Policy [Text Block]", "terseLabel": "Cash Flow Reporting" } } }, "localname": "CashFlowReportingPolicyTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "fisi_CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Cash paid for amounts included in measurement of lease liabilities.", "label": "Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract]", "terseLabel": "Cash paid for amounts included in the measurement of lease liabilities:" } } }, "localname": "CashPaidForAmountsIncludedInMeasurementOfLeaseLiabilitiesAbstract", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "stringItemType" }, "fisi_CertificateOfDepositPenaltyFeesForWithdrawals": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Certificate of deposit penalty fees for withdrawals.", "label": "Certificate Of Deposit Penalty Fees For Withdrawals", "terseLabel": "Certificate of deposit penalty fees for withdrawals" } } }, "localname": "CertificateOfDepositPenaltyFeesForWithdrawals", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_CollateralDependentFinancingReceivableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Collateral dependent financing receivable.", "label": "Collateral Dependent Financing Receivable [Member]", "terseLabel": "Collateral Dependent Loans [Member]" } } }, "localname": "CollateralDependentFinancingReceivableMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "fisi_CollateralDependentImpairedFinancingReceivableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Collateral dependent impaired financing receivable.", "label": "Collateral Dependent Impaired Financing Receivable [Member]", "terseLabel": "Collateral Dependent Impaired Loans [Member]" } } }, "localname": "CollateralDependentImpairedFinancingReceivableMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "fisi_CollateralDependentLoans": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Collateral dependent loans.", "label": "Collateral Dependent Loans", "totalLabel": "Collateral dependent loans" } } }, "localname": "CollateralDependentLoans", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "monetaryItemType" }, "fisi_CollateralDependentLoansOnBusinessAssets": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails": { "order": 10010.0, "parentTag": "fisi_CollateralDependentLoans", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Collateral dependent loans on business assets.", "label": "Collateral Dependent Loans On Business Assets", "terseLabel": "Collateral dependent loans on business assets" } } }, "localname": "CollateralDependentLoansOnBusinessAssets", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "monetaryItemType" }, "fisi_CollateralDependentLoansOnRealProperty": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails": { "order": 10020.0, "parentTag": "fisi_CollateralDependentLoans", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Collateral dependent loans on real property.", "label": "Collateral Dependent Loans On Real Property", "terseLabel": "Collateral dependent loans on real property" } } }, "localname": "CollateralDependentLoansOnRealProperty", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "monetaryItemType" }, "fisi_CommercialAndIndustrialMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commercial And Industrial [Member]", "label": "Commercial And Industrial [Member]", "terseLabel": "Commercial Business [Member]" } } }, "localname": "CommercialAndIndustrialMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "domainItemType" }, "fisi_CommitmentsAndContingenciesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commitments and contingencies.", "label": "Commitments And Contingencies [Line Items]", "terseLabel": "Commitments And Contingencies [Line Items]" } } }, "localname": "CommitmentsAndContingenciesLineItems", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "fisi_CommitmentsAndContingenciesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Commitments and contingencies.", "label": "Commitments And Contingencies [Table]", "terseLabel": "Commitments And Contingencies [Table]" } } }, "localname": "CommitmentsAndContingenciesTable", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "fisi_ConsumerIndirectMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Consumer Indirect [Member]", "label": "Consumer Indirect [Member]", "terseLabel": "Consumer Indirect [Member]" } } }, "localname": "ConsumerIndirectMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "fisi_ConsumerOverdraftsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Consumer Overdrafts [Member]", "label": "Consumer Overdrafts [Member]", "terseLabel": "Consumer Overdrafts [Member]" } } }, "localname": "ConsumerOverdraftsMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_CoronavirusAidReliefAndEconomicSecurityActMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Coronavirus Aid Relief and Economic Security Act.", "label": "Coronavirus Aid Relief And Economic Security Act [Member]", "terseLabel": "CARES Act [Member]" } } }, "localname": "CoronavirusAidReliefAndEconomicSecurityActMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_CreditLossExpense": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Credit loss expense.", "label": "Credit Loss Expense", "terseLabel": "Credit loss expense" } } }, "localname": "CreditLossExpense", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_DaysPastDueWhenLoansAreGenerallyPlacedOnNonaccrualStatusInDays": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Days Past Due When Loans Are Generally Placed On Nonaccrual Status, In Days", "label": "Days Past Due When Loans Are Generally Placed On Nonaccrual Status In Days", "terseLabel": "Days past due when loans are generally placed on nonaccrual status, in days" } } }, "localname": "DaysPastDueWhenLoansAreGenerallyPlacedOnNonaccrualStatusInDays", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "durationItemType" }, "fisi_DebtSecuritiesAvailableForSaleAndHeldToMaturityRestricted": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Debt securities available for sale and held to maturity restricted.", "label": "Debt Securities Available For Sale And Held To Maturity Restricted", "terseLabel": "Securities pledged as collateral" } } }, "localname": "DebtSecuritiesAvailableForSaleAndHeldToMaturityRestricted", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_DebtSecuritiesAvailableForSaleAndHeldToMaturitySecuritiesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt securities available for sale and held to maturity securities.", "label": "Debt Securities Available For Sale And Held To Maturity Securities [Line Items]", "terseLabel": "Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]" } } }, "localname": "DebtSecuritiesAvailableForSaleAndHeldToMaturitySecuritiesLineItems", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "stringItemType" }, "fisi_DebtSecuritiesAvailableForSaleAndHeldToMaturitySecuritiesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Debt securities available for sale and held to maturity securities.", "label": "Debt Securities Available For Sale And Held To Maturity Securities [Table]", "terseLabel": "Debt Securities Available For Sale And Held To Maturity Securities [Table]" } } }, "localname": "DebtSecuritiesAvailableForSaleAndHeldToMaturitySecuritiesTable", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "stringItemType" }, "fisi_DecreaseIncreaseInNetUnsettledSecurityPurchases": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "(Decrease) increase in net unsettled security purchases.", "label": "Decrease Increase In Net Unsettled Security Purchases", "terseLabel": "Increase in net unsettled security purchases" } } }, "localname": "DecreaseIncreaseInNetUnsettledSecurityPurchases", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "fisi_DerivativeEffectiveDate": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Derivative effective date.", "label": "Derivative Effective Date", "terseLabel": "Derivative effective date" } } }, "localname": "DerivativeEffectiveDate", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "gYearMonthItemType" }, "fisi_DirectorStockIncentivePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Director stock incentive plan.", "label": "Director Stock Incentive Plan [Member]", "terseLabel": "Non-employee Directors Stock Incentive Plan [Member]" } } }, "localname": "DirectorStockIncentivePlanMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_EstimatedAmountOfReliefFund": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Estimated amount of relief fund.", "label": "Estimated Amount Of Relief Fund", "terseLabel": "Estimated amount of relief fund" } } }, "localname": "EstimatedAmountOfReliefFund", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_ExpectedAnnualizedExpenseSavings": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Expected annualized expense savings.", "label": "Expected Annualized Expense Savings", "terseLabel": "Expected annualized expense savings" } } }, "localname": "ExpectedAnnualizedExpenseSavings", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_FairValueMeasurementWithUnobservableInputValuePercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Fair value measurement with unobservable input value percentage.", "label": "Fair Value Measurement With Unobservable Input Value Percentage", "terseLabel": "Unobservable Input Value or Range" } } }, "localname": "FairValueMeasurementWithUnobservableInputValuePercentage", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "percentItemType" }, "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Financing receivable after deferred income offset amount.", "label": "Financing Receivable After Deferred Income Offset Amount", "totalLabel": "Total" } } }, "localname": "FinancingReceivableAfterDeferredIncomeOffsetAmount", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "fisi_FinancingReceivableAllowanceForLoanLossesProvisionCredit": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Financing receivable allowance for loan losses, provision (credit).", "label": "Financing Receivable Allowance For Loan Losses Provision Credit", "terseLabel": "Allowance for loan losses, Provision (credit)" } } }, "localname": "FinancingReceivableAllowanceForLoanLossesProvisionCredit", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "fisi_FinancingReceivablePayableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10060.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Financing receivable (payable) originated five or more years before latest fiscal year.", "label": "Financing Receivable Payable Originated Five Or More Years Before Latest Fiscal Year", "terseLabel": "Prior" } } }, "localname": "FinancingReceivablePayableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "fisi_GainLossOnTaxCreditInvestments": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10290.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "label": "Gain Loss On Tax Credit Investments", "terseLabel": "Loss on tax credit investments" } } }, "localname": "GainLossOnTaxCreditInvestments", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_HeldToMaturitySecuritiesNet": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10190.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Held-to-maturity securities, net.", "label": "Held To Maturity Securities Net", "terseLabel": "Held-to-maturity securities, net , Amortized Cost", "verboseLabel": "Securities held to maturity, at amortized cost (net of allowance for credit losses of $8 and $0, respectively) (fair value of $301,878 and $363,259, respectively)" } } }, "localname": "HeldToMaturitySecuritiesNet", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_IncreaseDecreaseInDeferredTaxAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Increase decrease in deferred tax assets.", "label": "Increase Decrease In Deferred Tax Assets", "terseLabel": "Increase (decrease) in deferred tax assets" } } }, "localname": "IncreaseDecreaseInDeferredTaxAssets", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_IncrementalCommonSharesAttributableToVestingOfRestrictedStockAwards": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "order": 10030.0, "parentTag": "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "Incremental common shares attributable to vesting of restricted stock awards.", "label": "Incremental Common Shares Attributable To Vesting Of Restricted Stock Awards", "terseLabel": "Vesting of restricted stock awards" } } }, "localname": "IncrementalCommonSharesAttributableToVestingOfRestrictedStockAwards", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "fisi_InitialRecognitionOfOperatingLeaseLiabilities": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "label": "Initial Recognition Of Operating Lease Liabilities", "terseLabel": "Initial recognition of operating lease liabilities" } } }, "localname": "InitialRecognitionOfOperatingLeaseLiabilities", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InitialRecognitionOfOperatingLeaseRightOfUseAssets": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "label": "Initial Recognition Of Operating Lease Right Of Use Assets", "terseLabel": "Initial recognition of operating lease right of use assets" } } }, "localname": "InitialRecognitionOfOperatingLeaseRightOfUseAssets", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InternallyRatedHeldToMaturitySecurities": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Internally rated held-to-maturity securities.", "label": "Internally Rated Held To Maturity Securities", "terseLabel": "Internally rated held-to-maturity securities" } } }, "localname": "InternallyRatedHeldToMaturitySecurities", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentGradeInternalCreditRatingExposure": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Investment grade internal credit rating exposure.", "label": "Investment Grade Internal Credit Rating Exposure", "terseLabel": "Investment grade rating exposure" } } }, "localname": "InvestmentGradeInternalCreditRatingExposure", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentGradeInternalCreditRatingExposurePercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Investment grade internal credit rating exposure percentage.", "label": "Investment Grade Internal Credit Rating Exposure Percentage", "terseLabel": "Investment grade rating exposure percentage" } } }, "localname": "InvestmentGradeInternalCreditRatingExposurePercentage", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "percentItemType" }, "fisi_InvestmentSecuritiesAccumulatedUnrecognizedHoldingLoss": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated pre-tax unrealized loss on securities.", "label": "Investment Securities Accumulated Unrecognized Holding Loss", "totalLabel": "Total Securities, Unrealized Losses" } } }, "localname": "InvestmentSecuritiesAccumulatedUnrecognizedHoldingLoss", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10020.0, "parentTag": "fisi_InvestmentSecuritiesAccumulatedUnrecognizedHoldingLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated pre-tax unrealized loss on securities that have been in a loss position for twelve months or longer.", "label": "Investment Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss", "positiveTerseLabel": "Securities, 12 months or longer, Unrealized Losses", "terseLabel": "Total Securities, 12 months or longer, Unrealized Losses" } } }, "localname": "InvestmentSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentSecuritiesContinuousUnrealizedLossPositionFairValue": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the fair value of securities which are in an unrealized loss position.", "label": "Investment Securities Continuous Unrealized Loss Position Fair Value", "totalLabel": "Total Securities, Fair Value" } } }, "localname": "InvestmentSecuritiesContinuousUnrealizedLossPositionFairValue", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10010.0, "parentTag": "fisi_InvestmentSecuritiesAccumulatedUnrecognizedHoldingLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated pre-tax unrealized loss on investments in securities that have been in a loss position for less than twelve months.", "label": "Investment Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss", "positiveVerboseLabel": "Securities, less than 12 months, Unrealized Losses", "terseLabel": "Total Securities, Less than 12 months, Unrealized Losses" } } }, "localname": "InvestmentSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10030.0, "parentTag": "fisi_InvestmentSecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the fair value of securities that have been in a continuous unrealized loss position for less than twelve months.", "label": "Investment Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value", "positiveVerboseLabel": "Securities, less than 12 months, Fair Value", "terseLabel": "Total Securities, Less than 12 months, Fair Value" } } }, "localname": "InvestmentSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10040.0, "parentTag": "fisi_InvestmentSecuritiesContinuousUnrealizedLossPositionFairValue", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "This item represents the fair value of securities that have been in a continuous unrealized loss position for twelve months or longer.", "label": "Investment Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value", "positiveTerseLabel": "Securities, 12 months or longer, Fair Value", "terseLabel": "Total Securities, 12 months or longer, Fair Value" } } }, "localname": "InvestmentSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_InvestmentSecuritiesInUnrealizedLossPositionNumberOfPositions": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of investments in securities measured at fair value with change in fair value and in unrealized loss position.", "label": "Investment Securities In Unrealized Loss Position Number Of Positions", "terseLabel": "Number of security positions, unrealized loss position" } } }, "localname": "InvestmentSecuritiesInUnrealizedLossPositionNumberOfPositions", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_InvestmentSecuritiesInUnrealizedLossPositionsLessThanTwelveMonthsQualitativeDisclosureNumberOfPositions": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired for less than twelve months.", "label": "Investment Securities In Unrealized Loss Positions Less Than Twelve Months Qualitative Disclosure Number Of Positions", "terseLabel": "Number of security positions, unrealized loss position for less than 12 months" } } }, "localname": "InvestmentSecuritiesInUnrealizedLossPositionsLessThanTwelveMonthsQualitativeDisclosureNumberOfPositions", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_InvestmentSecuritiesInUnrealizedLossPositionsTwelveMonthsOrLongerQualitativeDisclosureNumberOfPositions": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired for twelve months or longer.", "label": "Investment Securities In Unrealized Loss Positions Twelve Months Or Longer Qualitative Disclosure Number Of Positions", "terseLabel": "Number of security positions, unrealized loss position for more than 12 months" } } }, "localname": "InvestmentSecuritiesInUnrealizedLossPositionsTwelveMonthsOrLongerQualitativeDisclosureNumberOfPositions", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_LeaseTerminationCostsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Lease termination costs.", "label": "Lease Termination Costs [Member]", "terseLabel": "Lease Termination Costs [Member]" } } }, "localname": "LeaseTerminationCostsMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_LoanServicingRightsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan servicing rights.", "label": "Loan Servicing Rights [Member]", "terseLabel": "Loan Servicing Rights [Member]" } } }, "localname": "LoanServicingRightsMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "fisi_LoansAndLeasesReceivableDeferredLoanFeesCosts": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails": { "order": 10040.0, "parentTag": "us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Loans and leases receivable deferred loan (fees) costs.", "label": "Loans And Leases Receivable Deferred Loan Fees Costs", "negatedLabel": "Net Deferred Loan (Fees) Costs" } } }, "localname": "LoansAndLeasesReceivableDeferredLoanFeesCosts", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails" ], "xbrltype": "monetaryItemType" }, "fisi_LoansHeldForSaleMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loans held for sale.", "label": "Loans Held For Sale [Member]", "terseLabel": "Loans Held For Sale [Member]" } } }, "localname": "LoansHeldForSaleMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "fisi_ManagementStockIncentivePlanMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Management Stock Incentive Plan [Member]", "label": "Management Stock Incentive Plan [Member]", "terseLabel": "Management Stock Incentive Plan [Member]" } } }, "localname": "ManagementStockIncentivePlanMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_NatureOfBusinessOperationsPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Nature Of Business Operations [Policy Text Block]", "label": "Nature Of Business Operations Policy [Text Block]", "terseLabel": "Nature of Operations" } } }, "localname": "NatureOfBusinessOperationsPolicyTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "fisi_NonBankingMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Non-Banking [Member]", "label": "Non Banking [Member]", "terseLabel": "Non-Banking [Member]" } } }, "localname": "NonBankingMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "domainItemType" }, "fisi_NonMaturityDepositsFairValueDisclosure": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Non-Maturity Deposits Fair Value Disclosure", "label": "Non Maturity Deposits Fair Value Disclosure", "terseLabel": "Non-maturity deposits" } } }, "localname": "NonMaturityDepositsFairValueDisclosure", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "fisi_NoninterestIncomeInvestmentsInLimitedPartnerships": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10230.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Noninterest income from investments in limited partnerships.", "label": "Noninterest Income Investments In Limited Partnerships", "terseLabel": "Investments in limited partnerships" } } }, "localname": "NoninterestIncomeInvestmentsInLimitedPartnerships", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_NoninterestIncomeLoanServicing": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10240.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Noninterest income loan servicing.", "label": "Noninterest Income Loan Servicing", "terseLabel": "Loan servicing" } } }, "localname": "NoninterestIncomeLoanServicing", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_NoninterestIncomeServiceChargesOnDeposits": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10180.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Noninterest income service charges on deposits.", "label": "Noninterest Income Service Charges On Deposits", "terseLabel": "Service charges on deposits" } } }, "localname": "NoninterestIncomeServiceChargesOnDeposits", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_NumberOfAdditionalBranchesPlannedToClose": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of additional branches planned to close.", "label": "Number Of Additional Branches Planned To Close", "terseLabel": "Number of additional branches planned to close" } } }, "localname": "NumberOfAdditionalBranchesPlannedToClose", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_NumberOfBankBranchClosure": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of bank branch closure.", "label": "Number Of Bank Branch Closure", "terseLabel": "Number of bank branch closure" } } }, "localname": "NumberOfBankBranchClosure", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_NumberOfBuildingsSubleased": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of buildings subleased.", "label": "Number Of Buildings Subleased", "terseLabel": "Number of buildings subleased" } } }, "localname": "NumberOfBuildingsSubleased", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_NumberOfIdentifiedPortfolioSegments": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of identified portfolio segments.", "label": "Number Of Identified Portfolio Segments", "terseLabel": "Number of identified portfolio segments" } } }, "localname": "NumberOfIdentifiedPortfolioSegments", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_NumberOfMonthsHedgingExposureToVariabilityInFutureCashFlowsForForecastedTransactions": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of months hedging exposure to variability in future cash flows for forecasted transactions.", "label": "Number Of Months Hedging Exposure To Variability In Future Cash Flows For Forecasted Transactions", "terseLabel": "Number of months hedging exposure to variability in future cash flows for forecasted transactions" } } }, "localname": "NumberOfMonthsHedgingExposureToVariabilityInFutureCashFlowsForForecastedTransactions", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "durationItemType" }, "fisi_NumberOfNonEmployeeDirectors": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of non employee directors.", "label": "Number Of Non Employee Directors", "terseLabel": "Grant date fair value" } } }, "localname": "NumberOfNonEmployeeDirectors", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_NumberOfOutstandingForwardStartingInterestRateDerivative": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of outstanding forward starting interest rate derivative.", "label": "Number Of Outstanding Forward Starting Interest Rate Derivative", "terseLabel": "Number of outstanding forward starting interest rate Derivative" } } }, "localname": "NumberOfOutstandingForwardStartingInterestRateDerivative", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "integerItemType" }, "fisi_OfferingUnsecuredPersonalLoansAmount": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Offering unsecured personal loans, amount.", "label": "Offering Unsecured Personal Loans Amount", "terseLabel": "Offering unsecured personal loans, amount" } } }, "localname": "OfferingUnsecuredPersonalLoansAmount", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_OfferingUnsecuredPersonalLoansPercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Offering unsecured personal loans, percentage.", "label": "Offering Unsecured Personal Loans Percentage", "terseLabel": "Offering unsecured personal loans, percentage" } } }, "localname": "OfferingUnsecuredPersonalLoansPercentage", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "percentItemType" }, "fisi_OfferingUnsecuredPersonalLoansPeriod": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Offering unsecured personal loans, period.", "label": "Offering Unsecured Personal Loans Period", "terseLabel": "Offering unsecured personal loans, period" } } }, "localname": "OfferingUnsecuredPersonalLoansPeriod", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "durationItemType" }, "fisi_OperatingAccountingAndReportingConsiderationsRelatedToCovidPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating, accounting and reporting considerations related to covid-19 policy.", "label": "Operating Accounting And Reporting Considerations Related To Covid Policy Policy [Text Block]", "terseLabel": "Operating, Accounting and Reporting Considerations related to COVID-19" } } }, "localname": "OperatingAccountingAndReportingConsiderationsRelatedToCovidPolicyPolicyTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "fisi_OperatingLeaseLiabilitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating lease liabilities.", "label": "Operating Lease Liabilities [Abstract]", "terseLabel": "Operating Lease Liabilities:" } } }, "localname": "OperatingLeaseLiabilitiesAbstract", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "fisi_OperatingLeaseRightOfUseAssetAccumulatedAmortization": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails": { "order": 10020.0, "parentTag": "us-gaap_OperatingLeaseRightOfUseAsset", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Operating lease right of use asset accumulated amortization.", "label": "Operating Lease Right Of Use Asset Accumulated Amortization", "negatedLabel": "Accumulated amortization" } } }, "localname": "OperatingLeaseRightOfUseAssetAccumulatedAmortization", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "fisi_OperatingLeaseRightOfUseAssetGross": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails": { "order": 10010.0, "parentTag": "us-gaap_OperatingLeaseRightOfUseAsset", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Operating lease right of use asset gross.", "label": "Operating Lease Right Of Use Asset Gross", "terseLabel": "Gross carrying amount" } } }, "localname": "OperatingLeaseRightOfUseAssetGross", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "fisi_OperatingLeaseRightOfUseAssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Operating lease right of use assets.", "label": "Operating Lease Right Of Use Assets [Abstract]", "terseLabel": "Operating Lease Right of Use Assets:" } } }, "localname": "OperatingLeaseRightOfUseAssetsAbstract", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "fisi_OtherNoninterestExpensesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other noninterest expenses that are not performance, advisory, custodian, directors' fees, offering costs, commission expenses or printing and fulfillment costs and are not covered in any other noninterest expense category.", "label": "Other Noninterest Expenses [Member]", "terseLabel": "Other Noninterest Expense [Member]" } } }, "localname": "OtherNoninterestExpensesMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails" ], "xbrltype": "domainItemType" }, "fisi_OtherRealEstateOwnedOtherReceivableMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Other real estate owned other receivable.", "label": "Other Real Estate Owned Other Receivable [Member]", "terseLabel": "Other Real Estate Owned [Member]" } } }, "localname": "OtherRealEstateOwnedOtherReceivableMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "fisi_PaycheckProtectionProgramMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Paycheck protection program.", "label": "Paycheck Protection Program [Member]", "terseLabel": "Paycheck Protection Program [Member]" } } }, "localname": "PaycheckProtectionProgramMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_PercentageOfBranchNetwork": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of branch network.", "label": "Percentage Of Branch Network", "terseLabel": "Percentage of branch network" } } }, "localname": "PercentageOfBranchNetwork", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "percentItemType" }, "fisi_PercentageOfBranchNetworkImpact": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage of branch network impact.", "label": "Percentage Of Branch Network Impact", "terseLabel": "Percentage of branch network impact" } } }, "localname": "PercentageOfBranchNetworkImpact", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "percentItemType" }, "fisi_PerformanceShareUnitsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Performance Share Units [Member]", "label": "Performance Share Units [Member]", "terseLabel": "PSUs [Member]" } } }, "localname": "PerformanceShareUnitsMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails" ], "xbrltype": "domainItemType" }, "fisi_PreTaxExpenseRelatedBranchClosures": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Pre tax expense related branch closures.", "label": "Pre Tax Expense Related Branch Closures", "terseLabel": "Pre tax expense related branch closures" } } }, "localname": "PreTaxExpenseRelatedBranchClosures", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_ProceedsFromLoansSoldToOthers": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10150.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Proceeds from loans sold to others.", "label": "Proceeds From Loans Sold To Others", "terseLabel": "Loans sold to others" } } }, "localname": "ProceedsFromLoansSoldToOthers", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_ProvisionForCreditLosses": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails": { "order": 10020.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10220.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Provision for credit losses.", "label": "Provision For Credit Losses", "negatedLabel": "Provision for credit losses", "terseLabel": "Provision for credit losses" } } }, "localname": "ProvisionForCreditLosses", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_RestrictedStockAwardsAndRestrictedStockUnitsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Restricted stock awards and restricted stock units.", "label": "Restricted Stock Awards And Restricted Stock Units [Member]", "terseLabel": "Restricted Stock Awards and Restricted Stock Units [Member]" } } }, "localname": "RestrictedStockAwardsAndRestrictedStockUnitsMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "domainItemType" }, "fisi_RetailLoanPortfolioCategorizedByPaymentStatusTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Retail Loan Portfolio Categorized By Payment Status [Table Text Block]", "label": "Retail Loan Portfolio Categorized By Payment Status Table [Text Block]", "terseLabel": "Retail Loan Portfolio Categorized by Performance Status" } } }, "localname": "RetailLoanPortfolioCategorizedByPaymentStatusTableTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables" ], "xbrltype": "textBlockItemType" }, "fisi_ReturnOnAverageAssetsPerformanceRequirementMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Return on average assets performance requirement.", "label": "Return On Average Assets Performance Requirement [Member]", "terseLabel": "ROAA Performance Requirement [Member]" } } }, "localname": "ReturnOnAverageAssetsPerformanceRequirementMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_ReturnOnAverageEquityMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Return on average equity.", "label": "Return On Average Equity [Member]", "terseLabel": "ROAE Return on Average Equity [Member]" } } }, "localname": "ReturnOnAverageEquityMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_SalariesAndEmployeeBenefitsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Salaries and Employee Benefits [Member]", "label": "Salaries And Employee Benefits [Member]", "terseLabel": "Salaries and Employee Benefits [Member]" } } }, "localname": "SalariesAndEmployeeBenefitsMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails" ], "xbrltype": "domainItemType" }, "fisi_ScheduleOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of classification of right of use assets and lease liabilities.", "label": "Schedule Of Classification Of Right Of Use Assets And Lease Liabilities Table [Text Block]", "terseLabel": "Summary of Classification of Right of Use Assets and Lease Liabilities" } } }, "localname": "ScheduleOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesTableTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesTables" ], "xbrltype": "textBlockItemType" }, "fisi_ScheduleOfCollateralDependentLoansTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of collateral dependent loans.", "label": "Schedule Of Collateral Dependent Loans Table [Text Block]", "terseLabel": "Summary of Collateral Dependent Loans" } } }, "localname": "ScheduleOfCollateralDependentLoansTableTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables" ], "xbrltype": "textBlockItemType" }, "fisi_ScheduleOfLeaseCostsAndOtherLeaseInformationTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of lease costs and other lease information.", "label": "Schedule Of Lease Costs And Other Lease Information Table [Text Block]", "terseLabel": "Summary of Lease Costs and Other Lease Information" } } }, "localname": "ScheduleOfLeaseCostsAndOtherLeaseInformationTableTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesTables" ], "xbrltype": "textBlockItemType" }, "fisi_ScheduleOfShareBasedCompensationRestrictedStockUnitsAndPerformanceShareUnitsActivityTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Schedule of Share-based Compensation, Restricted Stock Units and Performance Share Units Activity [Table Text Block]", "label": "Schedule Of Share Based Compensation Restricted Stock Units And Performance Share Units Activity Table [Text Block]", "terseLabel": "Summary Of Restricted Stock Units And Performance Share Units Activity" } } }, "localname": "ScheduleOfShareBasedCompensationRestrictedStockUnitsAndPerformanceShareUnitsActivityTableTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansTables" ], "xbrltype": "textBlockItemType" }, "fisi_SeriesAThreePercentagePreferredStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Series A Three Percentage Preferred Stock [Member]", "terseLabel": "Series A 3% Preferred Stock [Member]" } } }, "localname": "SeriesAThreePercentagePreferredStockMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "domainItemType" }, "fisi_SeriesB1EightPointFourEightPercentagePreferredStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Series B1 Eight Point Four Eight Percentage Preferred Stock [Member]", "terseLabel": "Series B-1 8.48% Preferred Stock [Member]" } } }, "localname": "SeriesB1EightPointFourEightPercentagePreferredStockMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "domainItemType" }, "fisi_SeveranceCostsAndRealEstateRelatedCharges": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Severance costs and real estate related charges.", "label": "Severance Costs And Real Estate Related Charges", "terseLabel": "Severance costs and real estate related charges" } } }, "localname": "SeveranceCostsAndRealEstateRelatedCharges", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "fisi_ShareholdersEquityLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Shareholders Equity [Line Items]", "label": "Shareholders Equity [Line Items]", "terseLabel": "Shareholders Equity [Line Items]" } } }, "localname": "ShareholdersEquityLineItems", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "stringItemType" }, "fisi_ShareholdersEquityTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Shareholders Equity [Table]", "label": "Shareholders Equity [Table]", "terseLabel": "Shareholders Equity [Table]" } } }, "localname": "ShareholdersEquityTable", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "stringItemType" }, "fisi_SignificantAccountingPoliciesLineItems": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Significant Accounting Policies [Line Items]", "label": "Significant Accounting Policies [Line Items]", "terseLabel": "Significant Accounting Policies [Line Items]" } } }, "localname": "SignificantAccountingPoliciesLineItems", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "fisi_SignificantAccountingPoliciesTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Significant Accounting Policies [Table]", "label": "Significant Accounting Policies [Table]", "terseLabel": "Significant Accounting Policies [Table]" } } }, "localname": "SignificantAccountingPoliciesTable", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "fisi_StockReleasedDuringPeriodSharesRestrictedStockUnits": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock released during period shares restricted stock units.", "label": "Stock Released During Period Shares Restricted Stock Units", "terseLabel": "Restricted stock units released" } } }, "localname": "StockReleasedDuringPeriodSharesRestrictedStockUnits", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "fisi_StockReleasedDuringPeriodValueRestrictedStockUnits": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Stock released during period value restricted stock units.", "label": "Stock Released During Period Value Restricted Stock Units", "terseLabel": "Restricted stock units released" } } }, "localname": "StockReleasedDuringPeriodValueRestrictedStockUnits", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_StockRepurchaseProgramPercentageOfSharesAuthorizedToBeRepurchased": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock repurchase program percentage of shares authorized to be repurchased.", "label": "Stock Repurchase Program Percentage Of Shares Authorized To Be Repurchased", "terseLabel": "Stock repurchase program, percentage of shares authorized to be repurchased" } } }, "localname": "StockRepurchaseProgramPercentageOfSharesAuthorizedToBeRepurchased", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "percentItemType" }, "fisi_StockRepurchaseProgramPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Stock repurchase program.", "label": "Stock Repurchase Program Policy [Text Block]", "terseLabel": "Stock Repurchase Program" } } }, "localname": "StockRepurchaseProgramPolicyTextBlock", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "fisi_SubordinatedNotesDueTwoThousandAndThirtyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Subordinated notes due two thousand and thirty.", "label": "Subordinated Notes Due Two Thousand And Thirty [Member]", "terseLabel": "Subordinated Notes due 2030 [Member]" } } }, "localname": "SubordinatedNotesDueTwoThousandAndThirtyMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_TaxCutsAndJobsActReclassificationFromAociToRetainedEarningsIncomeTaxEffect": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Tax cuts and jobs act reclassification from aoci to retained earnings income tax effect.", "label": "Tax Cuts And Jobs Act Reclassification From Aoci To Retained Earnings Income Tax Effect", "verboseLabel": "Reclassification of income tax effects" } } }, "localname": "TaxCutsAndJobsActReclassificationFromAociToRetainedEarningsIncomeTaxEffect", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "fisi_ValuationAdjustmentsOnBranchFacilitiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Valuation adjustments on branch facilities.", "label": "Valuation Adjustments On Branch Facilities [Member]", "terseLabel": "Valuation Adjustments On Branch Facilities [Member]" } } }, "localname": "ValuationAdjustmentsOnBranchFacilitiesMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_ValuationAdjustmentsOnRestructuringCharges": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails": { "order": 10030.0, "parentTag": "us-gaap_RestructuringCosts", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Valuation adjustments on restructuring charges.", "label": "Valuation Adjustments On Restructuring Charges", "terseLabel": "Valuation adjustments" } } }, "localname": "ValuationAdjustmentsOnRestructuringCharges", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "monetaryItemType" }, "fisi_ValuationTechniqueAppraisalOfCollateralMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Valuation technique appraisal of collateral.", "label": "Valuation Technique Appraisal Of Collateral [Member]", "terseLabel": "Appraisal of Collateral [Member]" } } }, "localname": "ValuationTechniqueAppraisalOfCollateralMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "fisi_VestedAfterCompletionOfOneYearServiceRequirementMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Vested after completion of one year service requirement.", "label": "Vested After Completion Of One Year Service Requirement [Member]", "terseLabel": "Vested After Completion of One-Year Service Requirement [Member]" } } }, "localname": "VestedAfterCompletionOfOneYearServiceRequirementMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "fisi_VestedImmediatelyMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Vested immediately.", "label": "Vested Immediately [Member]", "terseLabel": "Vested Immediately [Member]" } } }, "localname": "VestedImmediatelyMember", "nsuri": "http://www.fiiwarsaw.com/20200930", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_ConsolidationItemsAxis": { "auth_ref": [ "r160", "r173", "r174", "r175", "r176", "r178", "r180", "r184" ], "lang": { "en-US": { "role": { "label": "Consolidation Items [Axis]", "terseLabel": "Consolidation Items" } } }, "localname": "ConsolidationItemsAxis", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "stringItemType" }, "srt_ConsolidationItemsDomain": { "auth_ref": [ "r160", "r173", "r174", "r175", "r176", "r178", "r180", "r184" ], "lang": { "en-US": { "role": { "label": "Consolidation Items [Domain]", "terseLabel": "Consolidation Items" } } }, "localname": "ConsolidationItemsDomain", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "domainItemType" }, "srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember": { "auth_ref": [ "r110", "r117", "r257", "r426", "r427", "r428", "r439", "r440" ], "lang": { "en-US": { "role": { "label": "Cumulative Effect Period Of Adoption Adjusted Balance [Member]", "terseLabel": "Adjusted Balance [Member]" } } }, "localname": "CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember": { "auth_ref": [ "r110", "r117", "r257", "r426", "r427", "r428", "r439", "r440" ], "lang": { "en-US": { "role": { "label": "Cumulative Effect Period Of Adoption Adjustment [Member]", "terseLabel": "Cumulative-Effect Adjustment [Member]" } } }, "localname": "CumulativeEffectPeriodOfAdoptionAdjustmentMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "srt_CumulativeEffectPeriodOfAdoptionAxis": { "auth_ref": [ "r110", "r117", "r257", "r426", "r427", "r428", "r439", "r440" ], "lang": { "en-US": { "role": { "label": "Cumulative Effect Period Of Adoption [Axis]", "terseLabel": "Cumulative Effect, Period of Adoption" } } }, "localname": "CumulativeEffectPeriodOfAdoptionAxis", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "stringItemType" }, "srt_CumulativeEffectPeriodOfAdoptionDomain": { "auth_ref": [ "r110", "r117", "r257", "r426", "r427", "r428", "r439", "r440" ], "lang": { "en-US": { "role": { "label": "Cumulative Effect Period Of Adoption [Domain]", "terseLabel": "Cumulative Effect, Period of Adoption" } } }, "localname": "CumulativeEffectPeriodOfAdoptionDomain", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "srt_DirectorMember": { "auth_ref": [ "r190" ], "lang": { "en-US": { "role": { "label": "Director [Member]", "terseLabel": "Director [Member]" } } }, "localname": "DirectorMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_MaximumMember": { "auth_ref": [ "r401", "r403", "r546", "r547", "r548", "r549", "r550", "r551", "r571", "r654", "r655" ], "lang": { "en-US": { "role": { "label": "Maximum [Member]", "terseLabel": "Maximum [Member]" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [ "r401", "r403", "r546", "r547", "r548", "r549", "r550", "r551", "r571", "r654", "r655" ], "lang": { "en-US": { "role": { "label": "Minimum [Member]", "terseLabel": "Minimum [Member]" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [ "r369", "r401", "r403", "r546", "r547", "r548", "r549", "r550", "r551", "r571", "r654", "r655" ], "lang": { "en-US": { "role": { "label": "Range [Axis]", "terseLabel": "Statistical Measurement" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [ "r369", "r401", "r403", "r546", "r547", "r548", "r549", "r550", "r551", "r571", "r654", "r655" ], "lang": { "en-US": { "role": { "label": "Range [Member]", "terseLabel": "Statistical Measurement" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_ScenarioForecastMember": { "auth_ref": [ "r402" ], "lang": { "en-US": { "role": { "label": "Scenario Forecast [Member]", "terseLabel": "Scenario Forecast [Member]" } } }, "localname": "ScenarioForecastMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_ScenarioUnspecifiedDomain": { "auth_ref": [ "r402" ], "lang": { "en-US": { "role": { "label": "Scenario Unspecified [Domain]", "terseLabel": "Scenario" } } }, "localname": "ScenarioUnspecifiedDomain", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_StatementScenarioAxis": { "auth_ref": [ "r344", "r402", "r539" ], "lang": { "en-US": { "role": { "label": "Statement Scenario [Axis]", "terseLabel": "Scenario" } } }, "localname": "StatementScenarioAxis", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_TitleOfIndividualAxis": { "auth_ref": [ "r190", "r537" ], "lang": { "en-US": { "role": { "label": "Title Of Individual [Axis]", "terseLabel": "Title of Individual" } } }, "localname": "TitleOfIndividualAxis", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "stringItemType" }, "srt_TitleOfIndividualWithRelationshipToEntityDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Title Of Individual With Relationship To Entity [Domain]", "terseLabel": "Title of Individual" } } }, "localname": "TitleOfIndividualWithRelationshipToEntityDomain", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "srt_WeightedAverageMember": { "auth_ref": [ "r546", "r548", "r551" ], "lang": { "en-US": { "role": { "label": "Weighted Average [Member]", "terseLabel": "Weighted Average [Member]" } } }, "localname": "WeightedAverageMember", "nsuri": "http://fasb.org/srt/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accounting Policies [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccountingStandardsUpdate201613Member": { "auth_ref": [ "r253" ], "lang": { "en-US": { "role": { "documentation": "Accounting Standards Update 2016-13 Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.", "label": "Accounting Standards Update201613 [Member]", "verboseLabel": "ASU 2016-13 [Member]" } } }, "localname": "AccountingStandardsUpdate201613Member", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountsNotesAndLoansReceivableLineItems": { "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": "Accounts Notes And Loans Receivable [Line Items]", "terseLabel": "Accounts, Notes, Loans and Financing Receivable [Line Items]" } } }, "localname": "AccountsNotesAndLoansReceivableLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccountsPayableFairValueDisclosure": { "auth_ref": [ "r502" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of liabilities incurred for goods and services received that are used in an entity's business and related party payables.", "label": "Accounts Payable Fair Value Disclosure", "terseLabel": "Accrued interest payable" } } }, "localname": "AccountsPayableFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments": { "auth_ref": [ "r92" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10210.0, "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": "Net amortization of premiums on securities" } } }, "localname": "AccretionAmortizationOfDiscountsAndPremiumsInvestments", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccruedInvestmentIncomeReceivable": { "auth_ref": [ "r14", "r583", "r641" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r43", "r51", "r53", "r456" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to defined benefit plans including the portion attributable to the noncontrolling interest.", "label": "Accumulated Defined Benefit Plans Adjustment Including Portion Attributable To Noncontrolling Interest [Member]", "terseLabel": "Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember": { "auth_ref": [ "r43", "r51", "r53", "r456" ], "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 [Member]", "terseLabel": "Pension And Post-Retirement Obligations [Member]" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r42", "r51", "r53", "r456" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) related to gain (loss) component of defined benefit plans including the portion attributable to the noncontrolling interest.", "label": "Accumulated Defined Benefit Plans Adjustment Net Gain Loss Including Portion Attributable To Noncontrolling Interest [Member]", "terseLabel": "Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentNetGainLossIncludingPortionAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember": { "auth_ref": [ "r45", "r51", "r53", "r456" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to prior service cost (credit) component of defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment Net Prior Service Cost Credit [Member]", "terseLabel": "Prior Service Credit [Member]" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r45", "r51", "r53", "r456" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive (income) loss related to prior service cost (credit) component of defined benefit plans including the portion attributable to the noncontrolling interest.", "label": "Accumulated Defined Benefit Plans Adjustment Net Prior Service Including Portion Attributable To Noncontrolling Interest [Member]", "terseLabel": "Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member]" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceIncludingPortionAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember": { "auth_ref": [ "r42", "r51", "r53", "r456" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) related to gain (loss) component of defined benefit plans attributable to the parent.", "label": "Accumulated Defined Benefit Plans Adjustment Net Unamortized Gain Loss [Member]", "terseLabel": "Net Actuarial Losses [Member]" } } }, "localname": "AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember": { "auth_ref": [ "r51", "r455" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) from gain (loss) of derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, including portion attributable to noncontrolling interest.", "label": "Accumulated Gain Loss Cash Flow Hedge Including Noncontrolling Interest [Member]", "terseLabel": "Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]" } } }, "localname": "AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember": { "auth_ref": [ "r51", "r60", "r455" ], "lang": { "en-US": { "role": { "documentation": "Accumulated other comprehensive income (loss) from gain (loss) of derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.", "label": "Accumulated Gain Loss Net Cash Flow Hedge Parent [Member]", "terseLabel": "Hedging Derivative Instruments [Member]" } } }, "localname": "AccumulatedGainLossNetCashFlowHedgeParentMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember": { "auth_ref": [ "r39", "r40", "r41", "r51", "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), including portion attributable to noncontrolling interest.", "label": "Accumulated Net Investment Gain Loss Including Portion Attributable To Noncontrolling Interest [Member]", "terseLabel": "Securities Available for Sale and Transferred Securities [Member]" } } }, "localname": "AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember": { "auth_ref": [ "r39", "r40", "r41", "r51", "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 Unrealized Investment Gain Loss [Member]", "terseLabel": "Securities Available-For-Sale and Transferred Securities [Member]" } } }, "localname": "AccumulatedNetUnrealizedInvestmentGainLossMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r17", "r47", "r50", "r51", "r638", "r663", "r667" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10070.0, "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" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeLossTable": { "auth_ref": [ "r507", "r508", "r509", "r510", "r511", "r513" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [ "r46", "r51", "r53", "r107", "r108", "r109", "r456", "r658", "r659" ], "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": "Accumulated Other Comprehensive Income [Member]", "terseLabel": "Accumulated Other Comprehensive Loss [Member]", "verboseLabel": "Accumulated Other Comprehensive Income (Loss) [Member]" } } }, "localname": "AccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_AdditionalPaidInCapital": { "auth_ref": [ "r15", "r429" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10050.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.", "label": "Additional Paid In Capital", "terseLabel": "Additional paid-in capital" } } }, "localname": "AdditionalPaidInCapital", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [ "r107", "r108", "r109", "r426", "r427", "r428" ], "lang": { "en-US": { "role": { "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.", "label": "Additional Paid In Capital [Member]", "terseLabel": "Additional Paid-in Capital [Member]" } } }, "localname": "AdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": { "auth_ref": [ "r111", "r112", "r113", "r114", "r254", "r255", "r256", "r257", "r258", "r259", "r422", "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r437", "r438", "r439", "r440", "r574", "r575", "r576", "r656", "r657", "r658", "r659", "r660", "r661", "r662", "r663", "r664", "r665", "r666", "r667" ], "lang": { "en-US": { "role": { "documentation": "Information by amendment to accounting standards.", "label": "Adjustments For New Accounting Pronouncements [Axis]", "terseLabel": "Accounting Standards Update" } } }, "localname": "AdjustmentsForNewAccountingPronouncementsAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": { "auth_ref": [ "r406", "r408", "r431", "r432" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.", "label": "Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value", "terseLabel": "Share-based compensation" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock": { "auth_ref": [ "r198", "r271" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of allowance for credit loss on financing receivable.", "label": "Allowance For Credit Losses On Financing Receivables Table [Text Block]", "terseLabel": "Changes in the Allowance for Loan Losses" } } }, "localname": "AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease": { "auth_ref": [], "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 the allowance for credit losses on loans" } } }, "localname": "AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AmortizationOfIntangibleAssets": { "auth_ref": [ "r91", "r315", "r319" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10150.0, "parentTag": "us-gaap_NoninterestExpense", "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 intangibles", "verboseLabel": "Amortization expense during the year" } } }, "localname": "AmortizationOfIntangibleAssets", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": { "auth_ref": [ "r138" ], "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": "Antidilutive shares excluded from computation of diluted EPS" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis": { "auth_ref": [ "r138" ], "lang": { "en-US": { "role": { "documentation": "Information by type of antidilutive security.", "label": "Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis]", "terseLabel": "Antidilutive Securities" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems": { "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": "Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]", "terseLabel": "Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]" } } }, "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AntidilutiveSecuritiesNameDomain": { "auth_ref": [ "r138" ], "lang": { "en-US": { "role": { "documentation": "Incremental common shares attributable to securities that were not included in diluted earnings per share (EPS) because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.", "label": "Antidilutive Securities Name [Domain]", "terseLabel": "Antidilutive Securities, Name" } } }, "localname": "AntidilutiveSecuritiesNameDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Assets": { "auth_ref": [ "r103", "r168", "r175", "r182", "r252", "r451", "r457", "r505", "r584", "r634" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "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", "terseLabel": "Total assets", "totalLabel": "Total assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Assets [Abstract]", "terseLabel": "ASSETS" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosure": { "auth_ref": [ "r489" ], "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": "Assets at fair value", "verboseLabel": "Assets at fair value" } } }, "localname": "AssetsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": { "auth_ref": [ "r219" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": 10040.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax", "terseLabel": "Securities available for sale, Unrealized Gains" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": { "auth_ref": [ "r220" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": 10050.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax", "terseLabel": "Securities available for sale, Unrealized Losses" } } }, "localname": "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis": { "auth_ref": [ "r216", "r295" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "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": "Available For Sale Debt Securities Amortized Cost Basis", "totalLabel": "Securities available for sale, Amortized Cost" } } }, "localname": "AvailableForSaleDebtSecuritiesAmortizedCostBasis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": { "auth_ref": [ "r224" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10150.0, "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 through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost", "terseLabel": "Debt securities available for sale, Due after five years through ten years, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r221", "r224", "r626" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10110.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value", "terseLabel": "Debt securities available for sale, Due after five years through ten years, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": { "auth_ref": [ "r223" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10140.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost", "terseLabel": "Debt securities available for sale, Due from one to five years, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r221", "r223", "r625" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10100.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities After One Through Five Years Fair Value", "terseLabel": "Debt securities available for sale, Due from one to five years, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": { "auth_ref": [ "r225" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10160.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities After Ten Years Amortized Cost", "terseLabel": "Debt securities available for sale, Due after ten years, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r221", "r225", "r627" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10120.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities After Ten Years Fair Value", "terseLabel": "Debt securities available for sale, Due after ten years, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": { "auth_ref": [ "r222" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10130.0, "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 next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities Within One Year Amortized Cost", "terseLabel": "Debt securities available for sale, Due in one year or less, Amortized Cost" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r221", "r222", "r624" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10090.0, "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 next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Available For Sale Securities Debt Maturities Within One Year Fair Value", "terseLabel": "Debt securities available for sale, Due in one year or less, Fair Value" } } }, "localname": "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableForSaleSecuritiesDebtSecurities": { "auth_ref": [ "r213", "r217", "r295", "r589" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": 10060.0, "parentTag": "us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10180.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "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": "Available For Sale Securities Debt Securities", "terseLabel": "Securities available for sale", "totalLabel": "Debt securities available for sale, Fair Value", "verboseLabel": "Securities available for sale, at fair value" } } }, "localname": "AvailableForSaleSecuritiesDebtSecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_AvailableforsaleSecuritiesMember": { "auth_ref": [ "r249" ], "lang": { "en-US": { "role": { "documentation": "Investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Availableforsale Securities [Member]", "terseLabel": "Available for Sale Securities [Member]" } } }, "localname": "AvailableforsaleSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AwardTypeAxis": { "auth_ref": [ "r409", "r421" ], "lang": { "en-US": { "role": { "documentation": "Information by type of award under share-based payment arrangement.", "label": "Award Type [Axis]", "terseLabel": "Award Type" } } }, "localname": "AwardTypeAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails" ], "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" } } }, "localname": "BalanceSheetLocationAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_BalanceSheetLocationDomain": { "auth_ref": [ "r469", "r474" ], "lang": { "en-US": { "role": { "documentation": "Location in the balance sheet (statement of financial position).", "label": "Balance Sheet Location [Domain]", "terseLabel": "Balance Sheet Location" } } }, "localname": "BalanceSheetLocationDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_BankOwnedLifeInsurance": { "auth_ref": [ "r583" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10220.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.", "label": "Bank Owned Life Insurance", "terseLabel": "Company owned life insurance" } } }, "localname": "BankOwnedLifeInsurance", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_BankOwnedLifeInsuranceIncome": { "auth_ref": [ "r610" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10270.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10220.0, "parentTag": "us-gaap_NoninterestIncome", "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": "Income on company owned life insurance", "terseLabel": "Company owned life insurance" } } }, "localname": "BankOwnedLifeInsuranceIncome", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_BasisOfAccountingPolicyPolicyTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).", "label": "Basis Of Accounting Policy Policy [Text Block]", "terseLabel": "Basis of Presentation" } } }, "localname": "BasisOfAccountingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r106" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for the basis of presentation and significant accounting policies concepts. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Accounting policies describe all significant accounting policies of the reporting entity.", "label": "Basis Of Presentation And Significant Accounting Policies [Text Block]", "terseLabel": "Basis of Presentation and Summary of Significant Accounting Policies" } } }, "localname": "BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_BrokerageCommissionsRevenue": { "auth_ref": [ "r578", "r608" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10210.0, "parentTag": "us-gaap_NoninterestIncome", "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": "Investment advisory" } } }, "localname": "BrokerageCommissionsRevenue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_BusinessExitCosts1": { "auth_ref": [ "r91", "r326", "r332", "r336" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails": { "order": 10020.0, "parentTag": "us-gaap_RestructuringCosts", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.", "label": "Business Exit Costs1", "terseLabel": "Lease termination costs" } } }, "localname": "BusinessExitCosts1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CarryingReportedAmountFairValueDisclosureMember": { "auth_ref": [ "r503", "r504" ], "lang": { "en-US": { "role": { "documentation": "Measured as reported on the statement of financial position (balance sheet).", "label": "Carrying Reported Amount Fair Value Disclosure [Member]", "terseLabel": "Carrying Amount [Member]" } } }, "localname": "CarryingReportedAmountFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashAndCashEquivalentsFairValueDisclosure": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion 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.", "label": "Cash And Cash Equivalents Fair Value Disclosure", "terseLabel": "Cash and cash equivalents" } } }, "localname": "CashAndCashEquivalentsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndDueFromBanks": { "auth_ref": [ "r581" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10170.0, "parentTag": "us-gaap_Assets", "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations": { "auth_ref": [ "r87", "r93", "r99" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, 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 Including Disposal Group And Discontinued Operations", "periodEndLabel": "Cash and cash equivalents, end of period", "periodStartLabel": "Cash and cash equivalents, beginning of period" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": { "auth_ref": [ "r87", "r506" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including 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 Including Exchange Rate Effect", "totalLabel": "Net increase in cash and cash equivalents" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashFlowHedgingMember": { "auth_ref": [ "r466" ], "lang": { "en-US": { "role": { "documentation": "Hedge of the exposure to variability in the cash flows of a recognized asset or liability, or of a forecasted transaction, that is attributable to a particular risk.", "label": "Cash Flow Hedging [Member]", "terseLabel": "Cash Flow Hedging [Member]", "verboseLabel": "Cash Flow Hedge of Interest Rate Risk [Member]" } } }, "localname": "CashFlowHedgingMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]", "terseLabel": "Noncash investing and financing activities:" } } }, "localname": "CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassOfStockDomain": { "auth_ref": [ "r101", "r103", "r127", "r131", "r132", "r135", "r137", "r145", "r146", "r147", "r252", "r505" ], "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" } } }, "localname": "ClassOfStockDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "domainItemType" }, "us-gaap_CollateralizedMortgageObligationsMember": { "auth_ref": [ "r349" ], "lang": { "en-US": { "role": { "documentation": "The category includes multiclass, pay-through securitizations collateralized by mortgages secured by assets, such as automobiles and boats, which are generally structured so that the collections of principal and interest due from the underlying debtors are paid to the holders of the CMO.", "label": "Collateralized Mortgage Obligations [Member]", "terseLabel": "Collateralized Mortgage Obligations [Member]" } } }, "localname": "CollateralizedMortgageObligationsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommercialRealEstateMember": { "auth_ref": [ "r288", "r370" ], "lang": { "en-US": { "role": { "documentation": "Property that is solely used for business purposes.", "label": "Commercial Real Estate [Member]", "terseLabel": "Commercial Mortgage [Member]" } } }, "localname": "CommercialRealEstateMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r27", "r343", "r594", "r643" ], "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", "verboseLabel": "Off-balance sheet commitments" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Commitments And Contingencies Disclosure [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r340", "r341", "r342", "r345" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingencies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommitmentsToExtendCreditMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Loan commitments are legally binding commitments to extend credit to a counterparty under certain terms and conditions.", "label": "Commitments To Extend Credit [Member]", "terseLabel": "Commitments To Extend Credit [Member]" } } }, "localname": "CommitmentsToExtendCreditMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockDividendsPerShareDeclared": { "auth_ref": [ "r361" ], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends declared during the period for each share of common stock outstanding.", "label": "Common Stock Dividends Per Share Declared", "terseLabel": "Cash dividends declared per common share", "verboseLabel": "Common stock dividends per share, declared" } } }, "localname": "CommonStockDividendsPerShareDeclared", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [ "r107", "r108" ], "lang": { "en-US": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]", "terseLabel": "Common Stock [Member]" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r13" ], "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": "Common stock, par value" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r13" ], "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" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r13" ], "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", "periodEndLabel": "Shares issued, ending balance", "periodStartLabel": "Shares issued, beginning balance", "terseLabel": "Common stock, shares issued" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r13", "r354" ], "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": "Shares outstanding, ending balance", "periodStartLabel": "Shares outstanding, beginning balance" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r13" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10040.0, "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", "terseLabel": "Common stock, $0.01 par value; 50,000,000 shares authorized; 16,099,556 shares issued" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_CompensationAndRetirementDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Compensation And Retirement Disclosure [Abstract]" } } }, "localname": "CompensationAndRetirementDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_ComprehensiveIncomeNetOfTax": { "auth_ref": [ "r56", "r58", "r59", "r66", "r601", "r646" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "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 Net Of Tax", "totalLabel": "Comprehensive income" } } }, "localname": "ComprehensiveIncomeNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComprehensiveIncomeNetOfTaxAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Comprehensive Income Net Of Tax [Abstract]", "terseLabel": "Comprehensive income:" } } }, "localname": "ComprehensiveIncomeNetOfTaxAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_ComprehensiveIncomeNoteTextBlock": { "auth_ref": [ "r65", "r74", "r600", "r645" ], "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 Note [Text Block]", "terseLabel": "Accumulated Other Comprehensive Income (Loss)" } } }, "localname": "ComprehensiveIncomeNoteTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLoss" ], "xbrltype": "textBlockItemType" }, "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": "Other Consumer [Member]" } } }, "localname": "ConsumerPortfolioSegmentMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CreditLossFinancialInstrumentPolicyTextBlock": { "auth_ref": [ "r260", "r261", "r262", "r264", "r266", "r272", "r278", "r279", "r280", "r281", "r292", "r293", "r294", "r296", "r297", "r298", "r303" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for credit loss on financial instrument measured at amortized cost basis, net investment in lease, off-balance sheet credit exposure, and available-for-sale debt security. Includes, but is not limited to, methodology used to estimate allowance for credit loss, how writeoff of uncollectible amount is recognized, and determination of past due status and nonaccrual status.", "label": "Credit Loss Financial Instrument Policy [Text Block]", "terseLabel": "Allowance for Credit Losses" } } }, "localname": "CreditLossFinancialInstrumentPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CreditRiskContractMember": { "auth_ref": [ "r370", "r478" ], "lang": { "en-US": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to the creditworthiness or the credit spread of an entity.", "label": "Credit Risk Contract [Member]", "terseLabel": "Credit Contract [Member]" } } }, "localname": "CreditRiskContractMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtAndEquitySecuritiesGainLoss": { "auth_ref": [ "r68", "r69" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails": { "order": 10030.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10290.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10270.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of unrealized and realized gain (loss) on investment in debt and equity securities.", "label": "Debt And Equity Securities Gain Loss", "negatedLabel": "Net gain on investment securities", "terseLabel": "Net gain on investment securities" } } }, "localname": "DebtAndEquitySecuritiesGainLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentAxis": { "auth_ref": [ "r7", "r8", "r9", "r585", "r587", "r632" ], "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" } } }, "localname": "DebtInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Percentage points added to the reference rate to compute the variable rate on the debt instrument.", "label": "Debt Instrument Basis Spread On Variable Rate1", "terseLabel": "Debt instrument, percentage of basis spread on variable rate" } } }, "localname": "DebtInstrumentBasisSpreadOnVariableRate1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentFaceAmount": { "auth_ref": [ "r516", "r518" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Face (par) amount of debt instrument at time of issuance.", "label": "Debt Instrument Face Amount", "terseLabel": "Debt instrument, aggregate principal amount" } } }, "localname": "DebtInstrumentFaceAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentInterestRateStatedPercentage": { "auth_ref": [ "r23" ], "lang": { "en-US": { "role": { "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.", "label": "Debt Instrument Interest Rate Stated Percentage", "terseLabel": "Debt instrument, interest rate" } } }, "localname": "DebtInstrumentInterestRateStatedPercentage", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_DebtInstrumentMaturityDate": { "auth_ref": [ "r24", "r494" ], "lang": { "en-US": { "role": { "documentation": "Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.", "label": "Debt Instrument Maturity Date", "terseLabel": "Debt instrument, maturity date" } } }, "localname": "DebtInstrumentMaturityDate", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "dateItemType" }, "us-gaap_DebtInstrumentNameDomain": { "auth_ref": [ "r26" ], "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" } } }, "localname": "DebtInstrumentNameDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DebtInstrumentPaymentTerms": { "auth_ref": [ "r25", "r631" ], "lang": { "en-US": { "role": { "documentation": "Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.", "label": "Debt Instrument Payment Terms", "terseLabel": "Debt instrument, payment terms" } } }, "localname": "DebtInstrumentPaymentTerms", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss": { "auth_ref": [ "r218", "r295", "r304", "r305" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of allowance for credit 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 Allowance For Credit Loss", "terseLabel": "Available for sale securities, allowance for credit loss" } } }, "localname": "DebtSecuritiesAvailableForSaleAllowanceForCreditLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger": { "auth_ref": [ "r247", "r302", "r307" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10120.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "weight": 1.0 } }, "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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer", "terseLabel": "Securities available for sale, 12 months or longer, Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [ "r247", "r302" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10100.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss", "terseLabel": "Securities available for sale, 12 months or longer, Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months": { "auth_ref": [ "r247", "r302", "r307" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10110.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "weight": 1.0 } }, "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), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months", "terseLabel": "Securities available for sale, Less than 12 months, Fair Value" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [ "r247", "r302" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10090.0, "parentTag": "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss", "terseLabel": "Securities available for sale, Less than 12 months, Unrealized Losses" } } }, "localname": "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleRealizedGain": { "auth_ref": [ "r250" ], "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": "Gross realized gains" } } }, "localname": "DebtSecuritiesAvailableForSaleRealizedGain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesSalesOfSecuritiesAvailableForSaleDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss": { "auth_ref": [ "r250" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesSalesOfSecuritiesAvailableForSaleDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition": { "auth_ref": [ "r244", "r299", "r307" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "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), in unrealized loss position without allowance for credit loss.", "label": "Debt Securities Available For Sale Unrealized Loss Position", "totalLabel": "Securities available for sale, Fair Value, Total" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPosition", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss": { "auth_ref": [ "r245", "r300" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "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 fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.", "label": "Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss", "totalLabel": "Securities available for sale, Unrealized Losses, Total" } } }, "localname": "DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLoss": { "auth_ref": [ "r228", "r263", "r267", "r270" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).", "label": "Debt Securities Held To Maturity Allowance For Credit Loss", "terseLabel": "Securities held to maturity, allowance for credit losses" } } }, "localname": "DebtSecuritiesHeldToMaturityAllowanceForCreditLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredIncomeTaxExpenseBenefit": { "auth_ref": [ "r91", "r104", "r436", "r442", "r443", "r444" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10240.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "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 (benefit) expense" } } }, "localname": "DeferredIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": { "auth_ref": [ "r366", "r382", "r394", "r396", "r397" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails": { "order": 10050.0, "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 Gains Losses", "negatedLabel": "Amortization of unrecognized net actuarial loss" } } }, "localname": "DefinedBenefitPlanAmortizationOfGainsLosses", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit": { "auth_ref": [ "r366", "r383", "r395", "r396", "r397" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails": { "order": 10040.0, "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 unrecognized prior service credit" } } }, "localname": "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets": { "auth_ref": [ "r366", "r381", "r393", "r396", "r397" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails": { "order": 10030.0, "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.", "label": "Defined Benefit Plan Expected Return On Plan Assets", "negatedLabel": "Expected return on plan assets" } } }, "localname": "DefinedBenefitPlanExpectedReturnOnPlanAssets", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanInterestCost": { "auth_ref": [ "r366", "r368", "r380", "r392", "r396", "r397" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails": { "order": 10020.0, "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", "terseLabel": "Interest cost on projected benefit obligation" } } }, "localname": "DefinedBenefitPlanInterestCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": { "auth_ref": [ "r378", "r390", "r396", "r397" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails": { "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", "totalLabel": "Net periodic benefit expense" } } }, "localname": "DefinedBenefitPlanNetPeriodicBenefitCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedBenefitPlanServiceCost": { "auth_ref": [ "r367", "r379", "r391", "r396", "r397" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails": { "order": 10010.0, "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", "terseLabel": "Service cost" } } }, "localname": "DefinedBenefitPlanServiceCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansComponentsOfNetPeriodicBenefitExpenseDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanDisclosureLineItems": { "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 Contribution Plan Disclosure [Line Items]", "terseLabel": "Defined Contribution Plan Disclosure [Line Items]" } } }, "localname": "DefinedContributionPlanDisclosureLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails" ], "xbrltype": "stringItemType" }, "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", "verboseLabel": "Employer contribution" } } }, "localname": "DefinedContributionPlanEmployerDiscretionaryContributionAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DefinedContributionPlanTable": { "auth_ref": [ "r400" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans.", "label": "Defined Contribution Plan [Table]", "terseLabel": "Defined Contribution Plan [Table]" } } }, "localname": "DefinedContributionPlanTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_Deposits": { "auth_ref": [ "r591" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10090.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepositsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Deposits [Abstract]", "terseLabel": "Deposits:" } } }, "localname": "DepositsAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "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": "Time deposits" } } }, "localname": "DepositsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepositsSavingsDeposits": { "auth_ref": [ "r591" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10150.0, "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 and money market" } } }, "localname": "DepositsSavingsDeposits", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DepreciationAndAmortization": { "auth_ref": [ "r91", "r322" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10200.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.", "label": "Depreciation And Amortization", "terseLabel": "Depreciation and amortization" } } }, "localname": "DepreciationAndAmortization", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeAssets": { "auth_ref": [ "r34", "r35", "r502" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value, after the effects of master netting arrangements, of a financial asset or other 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. Includes assets not subject to a master netting arrangement and not elected to be offset.", "label": "Derivative Assets", "terseLabel": "Derivative instruments, assets" } } }, "localname": "DerivativeAssets", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "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 Type [Domain]", "terseLabel": "Derivative Contract" } } }, "localname": "DerivativeContractTypeDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeFairValueOfDerivativeAsset": { "auth_ref": [ "r32", "r36", "r472", "r553" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value, before effects of master netting arrangements, of a financial asset or other 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. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.", "label": "Derivative Fair Value Of Derivative Asset", "terseLabel": "Asset derivatives" } } }, "localname": "DerivativeFairValueOfDerivativeAsset", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeFairValueOfDerivativeLiability": { "auth_ref": [ "r32", "r36", "r472", "r553" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value, before effects of master netting arrangements, of a financial liability 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. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.", "label": "Derivative Fair Value Of Derivative Liability", "terseLabel": "Liability derivatives" } } }, "localname": "DerivativeFairValueOfDerivativeLiability", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeFinancialInstrumentsAssetsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This element represents types of derivative financial instruments which are financial instruments or other contractual arrangements with all three of the following characteristics: (a) it has (1) one or more underlyings and (2) one or more notional amounts or payment provisions or both. Those terms determine the amount of the settlement or settlements, and, in some cases, whether or not a settlement is required; (b) it requires no initial net investment or an initial net investment that is smaller than would be required for other types of contracts that would be expected to have a similar response to changes in market factors; and (c) its terms require or permit net settlement, it can readily be settled net by a means outside the contract, or it provides for delivery of an asset that puts the recipient in a position not substantially different from net settlement. Notwithstanding the above characteristics, loan commitments that relate to the origination of mortgage loans that will be held for sale are accounted for as derivative instruments by the issuer of the loan commitment (that is, the potential lender).", "label": "Derivative Financial Instruments Assets [Member]", "terseLabel": "Derivative Financial Instruments, Assets" } } }, "localname": "DerivativeFinancialInstrumentsAssetsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "This item represents derivative instrument obligations meeting the definition of a liability which are reported as of the balance sheet date. Derivative instrument obligations are generally measured at fair value, and adjustments to the carrying amount of hedged items reflect changes in their fair value (that is, losses) that are attributable to the risk being hedged and that arise while the hedge is in effect.", "label": "Derivative Financial Instruments Liabilities [Member]", "terseLabel": "Derivative Instruments, Liabilities [Member]" } } }, "localname": "DerivativeFinancialInstrumentsLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeGainLossOnDerivativeNet": { "auth_ref": [ "r471" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10250.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.", "label": "Derivative Gain Loss On Derivative Net", "terseLabel": "Income from derivative instruments, net", "verboseLabel": "Gain (loss) recognized in income" } } }, "localname": "DerivativeGainLossOnDerivativeNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeInstrumentRiskAxis": { "auth_ref": [ "r470", "r473", "r476", "r479" ], "lang": { "en-US": { "role": { "documentation": "Information by type of derivative contract.", "label": "Derivative Instrument Risk [Axis]", "terseLabel": "Derivative Instrument" } } }, "localname": "DerivativeInstrumentRiskAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Derivative Instruments And Hedging Activities Disclosure [Abstract]" } } }, "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock": { "auth_ref": [ "r488" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.", "label": "Derivative Instruments And Hedging Activities Disclosure [Text Block]", "terseLabel": "Derivative Instruments and Hedging Activities" } } }, "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivities" ], "xbrltype": "textBlockItemType" }, "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis": { "auth_ref": [ "r467", "r470", "r476" ], "lang": { "en-US": { "role": { "documentation": "Information by type of hedging relationship.", "label": "Derivative Instruments Gain Loss By Hedging Relationship [Axis]", "terseLabel": "Hedging Relationship" } } }, "localname": "DerivativeInstrumentsGainLossByHedgingRelationshipAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable": { "auth_ref": [ "r467", "r470", "r476", "r479", "r480", "r484", "r486" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.", "label": "Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]", "terseLabel": "Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]" } } }, "localname": "DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsGainLossLineItems": { "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": "Derivative Instruments Gain Loss [Line Items]", "terseLabel": "Derivative Instruments, Gain (Loss) [Line Items]" } } }, "localname": "DerivativeInstrumentsGainLossLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeLiabilities": { "auth_ref": [ "r34", "r35", "r502" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value, after the effects of master netting arrangements, of a financial liability 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. Includes liabilities not subject to a master netting arrangement and not elected to be offset.", "label": "Derivative Liabilities", "terseLabel": "Derivative instruments, liabilities" } } }, "localname": "DerivativeLiabilities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset": { "auth_ref": [ "r33", "r461" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.", "label": "Derivative Liability Collateral Right To Reclaim Cash Offset", "terseLabel": "Obligations secured with cash" } } }, "localname": "DerivativeLiabilityCollateralRightToReclaimCashOffset", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLineItems": { "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": "Derivative [Line Items]", "terseLabel": "Derivative [Line Items]" } } }, "localname": "DerivativeLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativeNotionalAmount": { "auth_ref": [ "r463", "r465" ], "lang": { "en-US": { "role": { "documentation": "Nominal or face amount used to calculate payment on derivative.", "label": "Derivative Notional Amount", "terseLabel": "Gross notional amount", "verboseLabel": "Notional amount" } } }, "localname": "DerivativeNotionalAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeTable": { "auth_ref": [ "r462", "r464", "r465", "r467", "r468", "r475", "r476", "r482", "r483", "r486" ], "lang": { "en-US": { "role": { "documentation": "Schedule that describes and identifies a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.", "label": "Derivative [Table]", "terseLabel": "Derivative [Table]" } } }, "localname": "DerivativeTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DerivativesFairValueLineItems": { "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": "Derivatives Fair Value [Line Items]", "terseLabel": "Derivatives, Fair Value [Line Items]" } } }, "localname": "DerivativesFairValueLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DesignatedAsHedgingInstrumentMember": { "auth_ref": [ "r467" ], "lang": { "en-US": { "role": { "documentation": "Derivative instrument designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).", "label": "Designated As Hedging Instrument [Member]", "terseLabel": "Derivatives Designated as Hedging Instruments [Member]" } } }, "localname": "DesignatedAsHedgingInstrumentMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": { "auth_ref": [ "r434" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for share-based payment arrangement.", "label": "Disclosure Of Compensation Related Costs Share Based Payments [Text Block]", "terseLabel": "Share-Based Compensation Plans" } } }, "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlans" ], "xbrltype": "textBlockItemType" }, "us-gaap_DividendsCashAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Dividends Cash [Abstract]", "terseLabel": "Cash dividends declared:" } } }, "localname": "DividendsCashAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_DividendsCommonStockCash": { "auth_ref": [ "r361" ], "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": "Common stock dividends per share" } } }, "localname": "DividendsCommonStockCash", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsPayableCurrentAndNoncurrent": { "auth_ref": [ "r8", "r10", "r586", "r635" ], "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 Current And Noncurrent", "terseLabel": "Accrued and declared unpaid dividends" } } }, "localname": "DividendsPayableCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DividendsPreferredStockCash": { "auth_ref": [ "r361", "r629" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.", "label": "Dividends Preferred Stock Cash", "negatedLabel": "Preferred stock dividends per share" } } }, "localname": "DividendsPreferredStockCash", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_DoubtfulMember": { "auth_ref": [ "r200", "r283" ], "lang": { "en-US": { "role": { "documentation": "A category of financing receivables that have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.", "label": "Doubtful [Member]", "terseLabel": "Doubtful [Member]" } } }, "localname": "DoubtfulMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Earnings Per Share [Abstract]", "terseLabel": "Earnings per common share (Note 3):" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r67", "r115", "r116", "r117", "r118", "r119", "r123", "r127", "r135", "r136", "r137", "r141", "r142", "r602", "r647" ], "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", "verboseLabel": "Basic earnings per common share" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r67", "r115", "r116", "r117", "r118", "r119", "r127", "r135", "r136", "r137", "r141", "r142", "r602", "r647" ], "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": "Diluted earnings per common share" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareTextBlock": { "auth_ref": [ "r138", "r139", "r140", "r143" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for earnings per share.", "label": "Earnings Per Share [Text Block]", "terseLabel": "Earnings Per Common Share (\"EPS\")" } } }, "localname": "EarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPS" ], "xbrltype": "textBlockItemType" }, "us-gaap_EffectOnFutureCashFlowsAmount": { "auth_ref": [ "r334" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The quantified amount of the future effect on cash flows.", "label": "Effect On Future Cash Flows Amount", "terseLabel": "Total costs result in future cash expenditures" } } }, "localname": "EffectOnFutureCashFlowsAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": { "auth_ref": [ "r420" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.", "label": "Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized", "terseLabel": "Unrecognized compensation expense" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": { "auth_ref": [ "r420" ], "lang": { "en-US": { "role": { "documentation": "Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1", "terseLabel": "Expected recognition expense period, weighted average period in years" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions": { "auth_ref": [ "r420" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of cost to be recognized for option under share-based payment arrangement.", "label": "Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options", "terseLabel": "Stock options activity" } } }, "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EmployeeSeveranceMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Termination of an employee associated with exit from or disposal of business activities or restructurings pursuant to a plan.", "label": "Employee Severance [Member]", "terseLabel": "Employee Severance [Member]" } } }, "localname": "EmployeeSeveranceMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r107", "r108", "r109", "r112", "r120", "r122", "r144", "r257", "r354", "r361", "r426", "r427", "r428", "r439", "r440", "r507", "r508", "r509", "r510", "r511", "r513", "r658", "r659", "r660" ], "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" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_EstimateOfFairValueFairValueDisclosureMember": { "auth_ref": [ "r502" ], "lang": { "en-US": { "role": { "documentation": "Measured as an estimate of fair value.", "label": "Estimate Of Fair Value Fair Value Disclosure [Member]", "terseLabel": "Estimated Fair Value [Member]" } } }, "localname": "EstimateOfFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r489", "r490", "r491", "r498" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.", "label": "Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]", "terseLabel": "Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]", "terseLabel": "Fair Value Inputs, Assets, Quantitative Information [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable": { "auth_ref": [ "r492" ], "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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]", "terseLabel": "Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock": { "auth_ref": [ "r492" ], "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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques Table [Text Block]", "terseLabel": "Additional Quantitative Information about Assets Measured at Fair Value on Recurring and Non-Recurring Basis" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsLevel1ToLevel2TransfersAmount": { "auth_ref": [ "r491" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.", "label": "Fair Value Assets Level1 To Level2 Transfers Amount", "terseLabel": "Level 1 to Level 2 transfers, assets amount" } } }, "localname": "FairValueAssetsLevel1ToLevel2TransfersAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueAssetsLevel2ToLevel1TransfersAmount": { "auth_ref": [ "r491" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.", "label": "Fair Value Assets Level2 To Level1 Transfers Amount", "terseLabel": "Level 2 to Level 1 transfers, assets amount" } } }, "localname": "FairValueAssetsLevel2ToLevel1TransfersAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock": { "auth_ref": [ "r489", "r490" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of assets measured at fair value measured on a recurring or nonrecurring basis. Includes, but is 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.", "label": "Fair Value Assets Measured On Recurring And Nonrecurring Basis Table [Text Block]", "terseLabel": "Assets Measured at Fair Value on a Recurring and Non-Recurring Basis" } } }, "localname": "FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain": { "auth_ref": [ "r495" ], "lang": { "en-US": { "role": { "documentation": "Class of asset.", "label": "Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain]", "terseLabel": "Asset Class" } } }, "localname": "FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByAssetClassAxis": { "auth_ref": [ "r489", "r498" ], "lang": { "en-US": { "role": { "documentation": "Information by class of asset.", "label": "Fair Value By Asset Class [Axis]", "terseLabel": "Asset Class" } } }, "localname": "FairValueByAssetClassAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByBalanceSheetGroupingTable": { "auth_ref": [ "r489", "r503", "r504" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByBalanceSheetGroupingTextBlock": { "auth_ref": [ "r489", "r503" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of 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 [Text Block]", "terseLabel": "Carrying Amount, Estimated Fair Value, and Placement in Fair Value Hierarchy of Financial Instruments" } } }, "localname": "FairValueByBalanceSheetGroupingTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r370", "r372", "r373", "r374", "r375", "r376", "r377", "r396", "r490", "r543", "r544", "r545" ], "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 By Fair Value Hierarchy Level [Axis]", "terseLabel": "Fair Value Hierarchy and NAV" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByLiabilityClassAxis": { "auth_ref": [ "r497", "r498" ], "lang": { "en-US": { "role": { "documentation": "Information by class of liability.", "label": "Fair Value By Liability Class [Axis]", "terseLabel": "Liability Class" } } }, "localname": "FairValueByLiabilityClassAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementBasisAxis": { "auth_ref": [ "r489", "r499" ], "lang": { "en-US": { "role": { "documentation": "Information by measurement basis.", "label": "Fair Value By Measurement Basis [Axis]", "terseLabel": "Estimated Fair Value [Member]" } } }, "localname": "FairValueByMeasurementBasisAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r489", "r490", "r493", "r494", "r500" ], "lang": { "en-US": { "role": { "documentation": "Information by measurement frequency.", "label": "Fair Value By Measurement Frequency [Axis]", "terseLabel": "Measurement Frequency" } } }, "localname": "FairValueByMeasurementFrequencyAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "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 Disclosure Item Amounts [Domain]", "terseLabel": "Fair Value Measurement" } } }, "localname": "FairValueDisclosureItemAmountsDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueDisclosuresAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Fair Value Disclosures [Abstract]" } } }, "localname": "FairValueDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r497" ], "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 Measurements" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurements" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r370", "r372", "r377", "r396", "r490", "r543" ], "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 Level1 [Member]", "terseLabel": "Level 1 Inputs [Member]" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel2Member": { "auth_ref": [ "r370", "r372", "r377", "r396", "r490", "r544" ], "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 Level2 [Member]", "terseLabel": "Level 2 Inputs [Member]" } } }, "localname": "FairValueInputsLevel2Member", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r370", "r372", "r373", "r374", "r375", "r376", "r377", "r396", "r490", "r545" ], "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 Level3 [Member]", "terseLabel": "Level 3 Inputs [Member]" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesLevel2ToLevel1TransfersAmount": { "auth_ref": [ "r491" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.", "label": "Fair Value Liabilities Level2 To Level1 Transfers Amount", "terseLabel": "Level 2 to Level 1 transfers, liabilities amount" } } }, "localname": "FairValueLiabilitiesLevel2ToLevel1TransfersAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain": { "auth_ref": [ "r495" ], "lang": { "en-US": { "role": { "documentation": "Represents classes of liabilities measured and disclosed at fair value.", "label": "Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation By Liability Class [Domain]", "terseLabel": "Fair Value by Liability Class" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementFrequencyDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Measurement frequency.", "label": "Fair Value Measurement Frequency [Domain]", "terseLabel": "Measurement Frequency" } } }, "localname": "FairValueMeasurementFrequencyDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue": { "auth_ref": [ "r495" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value of financial instrument classified as an asset 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 Asset Value", "terseLabel": "Assets measured at fair value on recurring basis using significant unobservable inputs" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [ "r370", "r372", "r373", "r374", "r375", "r376", "r377", "r396", "r543", "r544", "r545" ], "lang": { "en-US": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Measurements Fair Value Hierarchy [Domain]", "terseLabel": "Fair Value Hierarchy and NAV" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsNonrecurringMember": { "auth_ref": [ "r489", "r490", "r493", "r494", "r496", "r500" ], "lang": { "en-US": { "role": { "documentation": "Infrequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, not frequently measured at fair value.", "label": "Fair Value Measurements Nonrecurring [Member]", "terseLabel": "Measured On A Nonrecurring Basis [Member]" } } }, "localname": "FairValueMeasurementsNonrecurringMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsRecurringMember": { "auth_ref": [ "r497", "r500" ], "lang": { "en-US": { "role": { "documentation": "Frequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, frequently measured at fair value.", "label": "Fair Value Measurements Recurring [Member]", "terseLabel": "Measured On A Recurring Basis [Member]" } } }, "localname": "FairValueMeasurementsRecurringMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable": { "auth_ref": [ "r469", "r475", "r484" ], "lang": { "en-US": { "role": { "documentation": "Schedule that discloses the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.", "label": "Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]", "terseLabel": "Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]" } } }, "localname": "FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FederalDepositInsuranceCorporationPremiumExpense": { "auth_ref": [ "r612" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10130.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance.", "label": "Federal Deposit Insurance Corporation Premium Expense", "terseLabel": "FDIC assessments" } } }, "localname": "FederalDepositInsuranceCorporationPremiumExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_FederalHomeLoanBankStockAndFederalReserveBankStock": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.", "label": "Federal Home Loan Bank Stock And Federal Reserve Bank Stock", "terseLabel": "FHLB and FRB stock" } } }, "localname": "FederalHomeLoanBankStockAndFederalReserveBankStock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember": { "auth_ref": [ "r592" ], "lang": { "en-US": { "role": { "documentation": "Investments in debentures, bonds and other debt securities issued by the Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac).", "label": "Federal Home Loan Mortgage Corporation Certificates And Obligations F H L M C [Member]", "terseLabel": "Federal Home Loan Mortgage Corporation [Member]" } } }, "localname": "FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember": { "auth_ref": [ "r592" ], "lang": { "en-US": { "role": { "documentation": "Investments in debentures, bonds and other debt securities issued by the Federal National Mortgage Association (FNMA or Fannie Mae).", "label": "Federal National Mortgage Association Certificates And Obligations F N M A [Member]", "terseLabel": "Federal National Mortgage Association [Member]" } } }, "localname": "FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancialInstrumentAxis": { "auth_ref": [ "r235", "r239", "r266", "r271", "r272", "r277", "r283", "r301", "r303", "r306", "r307", "r540", "r541", "r542", "r543", "r544", "r545", "r546", "r547", "r548", "r549", "r550", "r551", "r552", "r554", "r555", "r556", "r557", "r558", "r559", "r560", "r561", "r562", "r563", "r564", "r565", "r566", "r567", "r568", "r569", "r570" ], "lang": { "en-US": { "role": { "documentation": "Information by type of financial instrument.", "label": "Financial Instrument [Axis]", "terseLabel": "Financial Instrument" } } }, "localname": "FinancialInstrumentAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLosses": { "auth_ref": [ "r192", "r263", "r267", "r270", "r590" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.", "label": "Financing Receivable Allowance For Credit Losses", "periodEndLabel": "Allowance for loan losses, Ending balance", "periodStartLabel": "Allowance for loan losses, Beginning balance", "terseLabel": "Allowance for credit loss" } } }, "localname": "FinancingReceivableAllowanceForCreditLosses", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment": { "auth_ref": [ "r196" ], "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": "Allowance for loan losses, Collectively Evaluated for impairment" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1": { "auth_ref": [ "r196" ], "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 Impairment1", "terseLabel": "Allowance for loan losses, Individually Evaluated for impairment" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems": { "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 Allowance For Credit Losses [Line Items]", "terseLabel": "Financing Receivable, Allowance for Credit Losses [Line Items]" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery": { "auth_ref": [ "r195", "r269", "r290" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase in allowance for credit loss on financing receivable from recovery.", "label": "Financing Receivable Allowance For Credit Losses Recovery", "terseLabel": "Allowance for loan losses, Recoveries" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesRecovery", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs": { "auth_ref": [ "r194", "r268", "r290" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of writeoff of financing receivable, charged against allowance for credit loss.", "label": "Financing Receivable Allowance For Credit Losses Write Offs", "negatedLabel": "Allowance for loan losses, Charge-offs" } } }, "localname": "FinancingReceivableAllowanceForCreditLossesWriteOffs", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableChangeInMethodCreditLossExpenseReversal": { "auth_ref": [ "r265" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of credit loss expense (reversal of expense) for financing receivable from change in methodology.", "label": "Financing Receivable Change In Method Credit Loss Expense Reversal", "terseLabel": "Impact of adopting ASC 326" } } }, "localname": "FinancingReceivableChangeInMethodCreditLossExpenseReversal", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment": { "auth_ref": [ "r197" ], "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": "Allowance for loan losses, Collectively Evaluated for impairment" } } }, "localname": "FinancingReceivableCollectivelyEvaluatedForImpairment", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock": { "auth_ref": [ "r200", "r283" ], "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": "Commercial Loan Portfolio Categorized by Internally Assigned Asset Classification" } } }, "localname": "FinancingReceivableCreditQualityIndicatorsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment": { "auth_ref": [ "r197" ], "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": "Allowance for loan losses, Individually Evaluated for impairment" } } }, "localname": "FinancingReceivableIndividuallyEvaluatedForImpairment", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableModificationsNumberOfContracts2": { "auth_ref": [ "r202" ], "lang": { "en-US": { "role": { "documentation": "Number of financing receivables that have been modified by troubled debt restructurings.", "label": "Financing Receivable Modifications Number Of Contracts2", "terseLabel": "Number of loans modified as TDR" } } }, "localname": "FinancingReceivableModificationsNumberOfContracts2", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "integerItemType" }, "us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1": { "auth_ref": [ "r203" ], "lang": { "en-US": { "role": { "documentation": "Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.", "label": "Financing Receivable Modifications Subsequent Default Number Of Contracts1", "terseLabel": "Number of loans modified as TDR that defaulted within the previous 12 months" } } }, "localname": "FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "integerItemType" }, "us-gaap_FinancingReceivableNonaccrualInterestIncome": { "auth_ref": [ "r274" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of interest income on financing receivable on nonaccrual status.", "label": "Financing Receivable Nonaccrual Interest Income", "terseLabel": "Interest income on nonaccrual loans" } } }, "localname": "FinancingReceivableNonaccrualInterestIncome", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableNonaccrualNoAllowance": { "auth_ref": [ "r276" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable on nonaccrual status with no allowance for credit loss.", "label": "Financing Receivable Nonaccrual No Allowance", "terseLabel": "Nonaccrual with no allowance" } } }, "localname": "FinancingReceivableNonaccrualNoAllowance", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10060.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable originated more than five years prior to current fiscal year.", "label": "Financing Receivable Originated Five Or More Years Before Latest Fiscal Year", "terseLabel": "Prior" } } }, "localname": "FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10050.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10050.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable originated four years prior to current fiscal year.", "label": "Financing Receivable Originated Four Years Before Latest Fiscal Year", "terseLabel": "2016" } } }, "localname": "FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10010.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10010.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable originated in current fiscal year.", "label": "Financing Receivable Originated In Current Fiscal Year", "terseLabel": "2020" } } }, "localname": "FinancingReceivableOriginatedInCurrentFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10020.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10020.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable originated in fiscal year prior to current fiscal year.", "label": "Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year", "terseLabel": "2019" } } }, "localname": "FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10040.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10040.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable originated three years prior to current fiscal year.", "label": "Financing Receivable Originated Three Years Before Latest Fiscal Year", "terseLabel": "2017" } } }, "localname": "FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10030.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10030.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable originated two years prior to current fiscal year.", "label": "Financing Receivable Originated Two Years Before Latest Fiscal Year", "terseLabel": "2018" } } }, "localname": "FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing": { "auth_ref": [ "r206", "r275", "r291" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable 90 days or more past due and still accruing.", "label": "Financing Receivable Recorded Investment90 Days Past Due And Still Accruing", "terseLabel": "Past due greater than 90 days and still accruing interest" } } }, "localname": "FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis": { "auth_ref": [ "r201", "r207", "r208", "r272", "r277", "r283", "r286", "r287", "r290", "r291" ], "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": "Financing Receivable Recorded Investment By Class Of Financing Receivable [Axis]", "terseLabel": "Class of Financing Receivable" } } }, "localname": "FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "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": "Financing Receivable Recorded Investment Class Of Financing Receivable [Domain]", "terseLabel": "Class of Financing Receivable" } } }, "localname": "FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentCurrent": { "auth_ref": [ "r208", "r272", "r291" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails": { "order": 10030.0, "parentTag": "us-gaap_NotesReceivableGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable not past due.", "label": "Financing Receivable Recorded Investment Current", "terseLabel": "Current" } } }, "localname": "FinancingReceivableRecordedInvestmentCurrent", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentLineItems": { "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 [Line Items]", "terseLabel": "Financing Receivable Recorded Investment [Line Items]" } } }, "localname": "FinancingReceivableRecordedInvestmentLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus": { "auth_ref": [ "r205", "r273" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails": { "order": 10020.0, "parentTag": "us-gaap_NotesReceivableGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable on nonaccrual status.", "label": "Financing Receivable Recorded Investment Nonaccrual Status", "terseLabel": "Investment securities, nonaccrual" } } }, "localname": "FinancingReceivableRecordedInvestmentNonaccrualStatus", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRecordedInvestmentPastDue": { "auth_ref": [ "r208", "r272", "r291" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails": { "order": 10010.0, "parentTag": "us-gaap_NotesReceivableGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable past due.", "label": "Financing Receivable Recorded Investment Past Due", "terseLabel": "Investment securities, past due", "verboseLabel": "Past Due Loans" } } }, "localname": "FinancingReceivableRecordedInvestmentPastDue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivableRevolving": { "auth_ref": [ "r284", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10070.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10070.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of financing receivable that can be withdrawn, repaid and redrawn.", "label": "Financing Receivable Revolving", "terseLabel": "Revolving Loans Amortized Cost Basis" } } }, "localname": "FinancingReceivableRevolving", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivableRevolvingConvertedToTermLoan": { "auth_ref": [ "r285", "r290" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails": { "order": 10080.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails": { "order": 10080.0, "parentTag": "fisi_FinancingReceivableAfterDeferredIncomeOffsetAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of revolving financing receivable converted to term loan.", "label": "Financing Receivable Revolving Converted To Term Loan", "terseLabel": "Revolving Loans Converted to Term" } } }, "localname": "FinancingReceivableRevolvingConvertedToTermLoan", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FinancingReceivables30To59DaysPastDueMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Financial asset more than 29 days past due but fewer than 60 days past due.", "label": "Financing Receivables30 To59 Days Past Due [Member]", "terseLabel": "30 to 59 Days Past Due [Member]" } } }, "localname": "FinancingReceivables30To59DaysPastDueMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivables60To89DaysPastDueMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Financial asset more than 59 days past due but fewer than 90 days past due.", "label": "Financing Receivables60 To89 Days Past Due [Member]", "terseLabel": "60 to 89 Days Past Due [Member]" } } }, "localname": "FinancingReceivables60To89DaysPastDueMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember": { "auth_ref": [ "r291" ], "lang": { "en-US": { "role": { "documentation": "Financial asset equal to or greater than 90 days past due.", "label": "Financing Receivables Equal To Greater Than90 Days Past Due [Member]", "terseLabel": "Greater than 90 Days [Member]" } } }, "localname": "FinancingReceivablesEqualToGreaterThan90DaysPastDueMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FinancingReceivablesPeriodPastDueAxis": { "auth_ref": [ "r272", "r291" ], "lang": { "en-US": { "role": { "documentation": "Information by time period financial asset is past due.", "label": "Financing Receivables Period Past Due [Axis]", "terseLabel": "Financial Asset, Period Past Due" } } }, "localname": "FinancingReceivablesPeriodPastDueAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FinancingReceivablesPeriodPastDueDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Period in which financial asset is past due. Element name and standard label in Financial Asset, [numeric lower end] to [numeric higher end] [date measure] Past Due [Member] or Financial Asset, Greater Than [low end numeric value] [date measure] Past Due [Member] or Financial Asset, Less Than [high end numeric value] [date measure] Past Due [Member] formats.", "label": "Financing Receivables Period Past Due [Domain]", "terseLabel": "Financial Asset, Period Past Due" } } }, "localname": "FinancingReceivablesPeriodPastDueDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": { "auth_ref": [ "r318" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails": { "order": 10020.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": -1.0 } }, "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", "negatedLabel": "Accumulated amortization" } } }, "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": { "auth_ref": [ "r320" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Finite Lived Intangible Assets Amortization Expense Next Twelve Months", "terseLabel": "2021" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.", "label": "Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year", "terseLabel": "2020 (remainder of year)" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": { "auth_ref": [ "r320" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Finite Lived Intangible Assets Amortization Expense Year Five", "terseLabel": "2025" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": { "auth_ref": [ "r320" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Finite Lived Intangible Assets Amortization Expense Year Four", "terseLabel": "2024" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": { "auth_ref": [ "r320" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Finite Lived Intangible Assets Amortization Expense Year Three", "terseLabel": "2023" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": { "auth_ref": [ "r320" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Finite Lived Intangible Assets Amortization Expense Year Two", "terseLabel": "2022" } } }, "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsEstimatedAmortizationExpenseOfOtherIntangibleAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsGross": { "auth_ref": [ "r318", "r577" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails": { "order": 10010.0, "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.", "label": "Finite Lived Intangible Assets Gross", "terseLabel": "Gross carrying amount" } } }, "localname": "FiniteLivedIntangibleAssetsGross", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FiniteLivedIntangibleAssetsNet": { "auth_ref": [ "r318", "r573" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails": { "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", "totalLabel": "Net book value", "verboseLabel": "Other intangible assets, net" } } }, "localname": "FiniteLivedIntangibleAssetsNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsGrossCarryingAmountAccumulatedAmortizationAndNetBookValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnDerivativeInstrumentsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing gain (loss) on derivative instruments.", "label": "Gain Loss On Derivative Instruments [Member]", "terseLabel": "Income from Derivative Instruments, Net [Member]" } } }, "localname": "GainLossOnDerivativeInstrumentsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_GainLossOnSaleOfOtherAssets": { "auth_ref": [ "r91" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10300.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10280.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of gain (loss) on sale or disposal of other assets.", "label": "Gain Loss On Sale Of Other Assets", "negatedLabel": "Net gain on other assets", "terseLabel": "Net (loss) gain on other assets" } } }, "localname": "GainLossOnSaleOfOtherAssets", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_GainLossOnSalesOfLoansNet": { "auth_ref": [ "r91", "r609", "r652" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10280.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10260.0, "parentTag": "us-gaap_NoninterestIncome", "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": "Net gain on sale of loans held for sale", "terseLabel": "Net gain on sale of loans held for sale" } } }, "localname": "GainLossOnSalesOfLoansNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_Goodwill": { "auth_ref": [ "r308", "r310", "r582" ], "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": "Carrying amount of goodwill" } } }, "localname": "Goodwill", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Goodwill And Intangible Assets Disclosure [Abstract]" } } }, "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock": { "auth_ref": [ "r321" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssets" ], "xbrltype": "textBlockItemType" }, "us-gaap_GoodwillImpairmentLoss": { "auth_ref": [ "r91", "r309", "r311", "r313" ], "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", "terseLabel": "Goodwill impairment" } } }, "localname": "GoodwillImpairmentLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GoodwillLineItems": { "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": "Goodwill [Line Items]", "terseLabel": "Goodwill [Line Items]" } } }, "localname": "GoodwillLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_GoodwillPeriodIncreaseDecrease": { "auth_ref": [ "r312" ], "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) 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 Period Increase Decrease", "terseLabel": "No activity during the period" } } }, "localname": "GoodwillPeriodIncreaseDecrease", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_GovernmentNationalMortgageAssociationCertificatesAndObligationsGNMAMember": { "auth_ref": [ "r595" ], "lang": { "en-US": { "role": { "documentation": "Investments in debentures, bonds and other debt securities issued by the Government National Mortgage Association (GNMA or Ginnie Mae).", "label": "Government National Mortgage Association Certificates And Obligations G N M A [Member]", "terseLabel": "Government National Mortgage Association [Member]" } } }, "localname": "GovernmentNationalMortgageAssociationCertificatesAndObligationsGNMAMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_HedgingDesignationAxis": { "auth_ref": [ "r467", "r480" ], "lang": { "en-US": { "role": { "documentation": "Information by designation of purpose of derivative instrument.", "label": "Hedging Designation [Axis]", "terseLabel": "Hedging Designation" } } }, "localname": "HedgingDesignationAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_HedgingDesignationDomain": { "auth_ref": [ "r467" ], "lang": { "en-US": { "role": { "documentation": "Designation of purpose of derivative instrument.", "label": "Hedging Designation [Domain]", "terseLabel": "Hedging Designation" } } }, "localname": "HedgingDesignationDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_HedgingRelationshipDomain": { "auth_ref": [ "r467" ], "lang": { "en-US": { "role": { "documentation": "Nature or intent of a hedge.", "label": "Hedging Relationship [Domain]", "terseLabel": "Hedging Relationship" } } }, "localname": "HedgingRelationshipDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_HeldToMaturitySecurities": { "auth_ref": [ "r213", "r226", "r589" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "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": "Held To Maturity Securities", "totalLabel": "Securities held to maturity, Amortized Cost", "verboseLabel": "Debt securities, held-to-maturity" } } }, "localname": "HeldToMaturitySecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain": { "auth_ref": [ "r229", "r237" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": 10010.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "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": "Held To Maturity Securities Accumulated Unrecognized Holding Gain", "terseLabel": "Securities held to maturity, Unrealized Gains" } } }, "localname": "HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss": { "auth_ref": [ "r230", "r238" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": 10020.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "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).", "label": "Held To Maturity Securities Accumulated Unrecognized Holding Loss", "terseLabel": "Securities held to maturity, Unrealized Losses", "totalLabel": "Securities held to maturity, Unrealized Losses, Total" } } }, "localname": "HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": { "auth_ref": [ "r245", "r247" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10060.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss", "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": "Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss", "terseLabel": "Securities held to maturity, 12 months or longer, Unrealized Losses" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue": { "auth_ref": [ "r244" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "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": "Held To Maturity Securities Continuous Unrealized Loss Position Fair Value", "totalLabel": "Securities held to maturity, Fair Value, Total" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": { "auth_ref": [ "r245", "r247" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10050.0, "parentTag": "us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss", "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": "Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss", "terseLabel": "Securities held to maturity, Less than 12 months, Unrealized Losses" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": { "auth_ref": [ "r247" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10070.0, "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": "Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value", "terseLabel": "Securities held to maturity, Less than 12 months, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": { "auth_ref": [ "r247" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails": { "order": 10080.0, "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": "Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value", "terseLabel": "Securities held to maturity, 12 months or longer, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": { "auth_ref": [ "r233", "r242", "r622", "r626" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10030.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value", "terseLabel": "Debt securities held to maturity, Due after five years through ten years, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount": { "auth_ref": [ "r233", "r622" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10070.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount", "terseLabel": "Debt securities held to maturity, Due after five years through ten years, Amortized Cost" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": { "auth_ref": [ "r232", "r241", "r621", "r625" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10020.0, "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 second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value", "terseLabel": "Debt securities held to maturity, Due from one to five years, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount": { "auth_ref": [ "r232", "r621" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10060.0, "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 second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount", "terseLabel": "Debt securities held to maturity, Due from one to five years, Amortized Cost" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue": { "auth_ref": [ "r234", "r243", "r623", "r627" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10040.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities After Ten Years Fair Value", "terseLabel": "Debt securities held to maturity, Due after ten years, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount": { "auth_ref": [ "r234", "r623" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10080.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount", "terseLabel": "Debt securities held to maturity, Due after ten years, Amortized Cost" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue": { "auth_ref": [ "r231", "r240", "r620", "r624" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10010.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities Within One Year Fair Value", "terseLabel": "Debt securities held to maturity, Due in one year or less, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount": { "auth_ref": [ "r231", "r620" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "order": 10050.0, "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 current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).", "label": "Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount", "terseLabel": "Debt securities held to maturity, Due in one year or less, Amortized Cost" } } }, "localname": "HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldToMaturitySecuritiesFairValue": { "auth_ref": [ "r227", "r236", "r589" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails": { "order": 10030.0, "parentTag": "us-gaap_HeldToMaturitySecurities", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails": { "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).", "label": "Held To Maturity Securities Fair Value", "terseLabel": "Securities held to maturity, fair value", "totalLabel": "Securities held to maturity, Fair Value" } } }, "localname": "HeldToMaturitySecuritiesFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesScheduledMaturitiesOfSecuritiesAvailableForSaleAndSecuritiesHeldToMaturityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_HeldtomaturitySecuritiesMember": { "auth_ref": [ "r249" ], "lang": { "en-US": { "role": { "documentation": "Investments in debt securities classified as held-to-maturity.", "label": "Heldtomaturity Securities [Member]", "terseLabel": "Held To Maturity Investment Securities [Member]" } } }, "localname": "HeldtomaturitySecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "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 [Member]", "terseLabel": "Residential Real Estate Lines [Member]" } } }, "localname": "HomeEquityMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": { "auth_ref": [ "r63", "r168", "r174", "r178", "r181", "r184", "r579", "r598", "r618", "r649" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10030.0, "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 Extraordinary Items Noncontrolling Interest", "totalLabel": "Income before income taxes" } } }, "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Income Statement [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationAxis": { "auth_ref": [ "r324" ], "lang": { "en-US": { "role": { "documentation": "Information by location in the income statement.", "label": "Income Statement Location [Axis]", "terseLabel": "Income Statement Location" } } }, "localname": "IncomeStatementLocationAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeStatementLocationDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Location in the income statement.", "label": "Income Statement Location [Domain]", "terseLabel": "Income Statement Location" } } }, "localname": "IncomeStatementLocationDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r104", "r121", "r122", "r166", "r435", "r441", "r446", "r650" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10040.0, "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 (expense)", "negatedTerseLabel": "Income tax (expense) benefit", "terseLabel": "Income tax expense" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxesPaidNet": { "auth_ref": [ "r95" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInDeposits": { "auth_ref": [ "r94", "r617" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10040.0, "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 increase in deposits" } } }, "localname": "IncreaseDecreaseInDeposits", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOtherOperatingAssets": { "auth_ref": [ "r90" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10310.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in operating assets classified as other.", "label": "Increase Decrease In Other Operating Assets", "negatedLabel": "Increase in other assets" } } }, "localname": "IncreaseDecreaseInOtherOperatingAssets", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOtherOperatingLiabilities": { "auth_ref": [ "r90" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10320.0, "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": "Increase in other liabilities" } } }, "localname": "IncreaseDecreaseInOtherOperatingLiabilities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements": { "auth_ref": [ "r128", "r129", "r130", "r137" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "order": 10020.0, "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 Share Based Payment Arrangements", "terseLabel": "Exercise of stock options" } } }, "localname": "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_InformationByCategoryOfDebtSecurityAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by category of debt security, either available-for-sale or held-to-maturity.", "label": "Information By Category Of Debt Security [Axis]", "terseLabel": "Debt Security Category" } } }, "localname": "InformationByCategoryOfDebtSecurityAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InformationTechnologyAndDataProcessing": { "auth_ref": [ "r72" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10110.0, "parentTag": "us-gaap_NoninterestExpense", "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": "Computer and data processing" } } }, "localname": "InformationTechnologyAndDataProcessing", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InsuranceServicesRevenue": { "auth_ref": [ "r651" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10190.0, "parentTag": "us-gaap_NoninterestIncome", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Revenue from insurance services, including net premiums earned, gain on sale of insurance block, agency management fees and insurance contract fees and commissions.", "label": "Insurance Services Revenue", "terseLabel": "Insurance income" } } }, "localname": "InsuranceServicesRevenue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_IntangibleAssetsNetIncludingGoodwill": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10240.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.", "label": "Intangible Assets Net Including Goodwill", "terseLabel": "Goodwill and other intangible assets, net" } } }, "localname": "IntangibleAssetsNetIncludingGoodwill", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAndDividendIncomeOperating": { "auth_ref": [ "r604" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10330.0, "parentTag": "us-gaap_InterestIncomeExpenseNet", "weight": 1.0 } }, "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 income" } } }, "localname": "InterestAndDividendIncomeOperating", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAndDividendIncomeOperatingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Interest And Dividend Income Operating [Abstract]", "terseLabel": "Interest income:" } } }, "localname": "InterestAndDividendIncomeOperatingAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_InterestAndDividendIncomeSecurities": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10390.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of operating dividend and interest income, including amortization and accretion of premiums and discounts, on securities.", "label": "Interest And Dividend Income Securities", "terseLabel": "Interest and dividends on investment securities" } } }, "localname": "InterestAndDividendIncomeSecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAndFeeIncomeLoansAndLeases": { "auth_ref": [ "r603" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10380.0, "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": "Interest and fees on loans" } } }, "localname": "InterestAndFeeIncomeLoansAndLeases", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestAndOtherIncome": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10400.0, "parentTag": "us-gaap_InterestAndDividendIncomeOperating", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).", "label": "Interest And Other Income", "terseLabel": "Other interest income" } } }, "localname": "InterestAndOtherIncome", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestBearingDepositLiabilities": { "auth_ref": [ "r591" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10140.0, "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 demand" } } }, "localname": "InterestBearingDepositLiabilities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpense": { "auth_ref": [ "r62", "r162", "r515", "r517", "r616" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10340.0, "parentTag": "us-gaap_InterestIncomeExpenseNet", "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", "totalLabel": "Total interest expense" } } }, "localname": "InterestExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_InterestExpenseDeposits": { "auth_ref": [ "r613" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10350.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseLongTermDebt": { "auth_ref": [ "r615" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10370.0, "parentTag": "us-gaap_InterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Aggregate amount of interest paid or due on all long-term debt.", "label": "Interest Expense Long Term Debt", "terseLabel": "Long-term borrowings" } } }, "localname": "InterestExpenseLongTermDebt", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestExpenseShortTermBorrowings": { "auth_ref": [ "r614" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10360.0, "parentTag": "us-gaap_InterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.", "label": "Interest Expense Short Term Borrowings", "terseLabel": "Short-term borrowings" } } }, "localname": "InterestExpenseShortTermBorrowings", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss": { "auth_ref": [ "r607" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10050.0, "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 credit losses" } } }, "localname": "InterestIncomeExpenseAfterProvisionForLoanLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestIncomeExpenseNet": { "auth_ref": [ "r605" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails": { "order": 10040.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails": { "order": 10010.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10310.0, "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": "Interest income", "totalLabel": "Net interest income", "verboseLabel": "Net interest income (expense)" } } }, "localname": "InterestIncomeExpenseNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestPaidNet": { "auth_ref": [ "r83", "r88", "r95" ], "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 Net", "terseLabel": "Cash paid for interest" } } }, "localname": "InterestPaidNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet": { "auth_ref": [ "r487" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.", "label": "Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net", "terseLabel": "Estimated to be reclassified as an increase to interest expense during next twelve months" } } }, "localname": "InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InterestRateContractMember": { "auth_ref": [ "r370", "r477" ], "lang": { "en-US": { "role": { "documentation": "Derivative instrument whose primary underlying risk is tied to the right to receive or pay a sum of money at a given interest rate.", "label": "Interest Rate Contract [Member]", "terseLabel": "Interest Rate Swaps [Member]", "verboseLabel": "Interest Rate Product [Member]" } } }, "localname": "InterestRateContractMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InterestRateSwapMember": { "auth_ref": [ "r477" ], "lang": { "en-US": { "role": { "documentation": "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period.", "label": "Interest Rate Swap [Member]", "terseLabel": "Interest Rate Swap [Member]" } } }, "localname": "InterestRateSwapMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InterestReceivable": { "auth_ref": [ "r31" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.", "label": "Interest Receivable", "terseLabel": "Accrued interest receivable", "verboseLabel": "Accrued interest receivable" } } }, "localname": "InterestReceivable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InternalCreditAssessmentAxis": { "auth_ref": [ "r200", "r283", "r289", "r290", "r347", "r481" ], "lang": { "en-US": { "role": { "documentation": "Information by entity-defined rating.", "label": "Internal Credit Assessment [Axis]", "terseLabel": "Internal Credit Assessment" } } }, "localname": "InternalCreditAssessmentAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InternalCreditAssessmentDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Entity defined credit risk rating.", "label": "Internal Credit Assessment [Domain]", "terseLabel": "Internal Credit Assessment" } } }, "localname": "InternalCreditAssessmentDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentTypeAxis": { "auth_ref": [ "r673", "r674", "r675", "r676", "r677", "r678", "r679", "r680", "r681", "r682", "r683", "r684", "r685", "r686", "r687" ], "lang": { "en-US": { "role": { "documentation": "Information by type of investments.", "label": "Investment Type [Axis]", "terseLabel": "Investment Type" } } }, "localname": "InvestmentTypeAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentTypeCategorizationMember": { "auth_ref": [ "r673", "r674", "r675", "r676", "r677", "r678", "r679", "r680", "r681", "r682", "r683", "r684", "r685", "r686", "r687" ], "lang": { "en-US": { "role": { "documentation": "Asset obtained to generate income or appreciate in value.", "label": "Investment Type Categorization [Member]", "terseLabel": "Investments" } } }, "localname": "InvestmentTypeCategorizationMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_InvestmentsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Investments [Abstract]" } } }, "localname": "InvestmentsAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "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": "Scheduled Maturities of Securities Available for Sale and Securities Held to Maturity" } } }, "localname": "InvestmentsClassifiedByContractualMaturityDateTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock": { "auth_ref": [ "r251", "r580", "r628", "r688" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for investments in certain debt and equity securities.", "label": "Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block]", "terseLabel": "Investment Securities" } } }, "localname": "InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecurities" ], "xbrltype": "textBlockItemType" }, "us-gaap_LaborAndRelatedExpense": { "auth_ref": [ "r70" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10080.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 } }, "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 employee benefits" } } }, "localname": "LaborAndRelatedExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeaseCost": { "auth_ref": [ "r533", "r535" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails": { "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": "Net lease costs" } } }, "localname": "LeaseCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LeaseCostAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Lease Cost [Abstract]", "terseLabel": "Lease costs:" } } }, "localname": "LeaseCostAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LeasesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Leases [Abstract]" } } }, "localname": "LeasesAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_LesseeOperatingLeaseDescription": { "auth_ref": [ "r524" ], "lang": { "en-US": { "role": { "documentation": "Description of lessee's operating lease.", "label": "Lessee Operating Lease Description", "terseLabel": "Operating leases term description" } } }, "localname": "LesseeOperatingLeaseDescription", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock": { "auth_ref": [ "r534" ], "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": "Summary of Future Minimum Payments Under Non-cancellable Operating Leases" } } }, "localname": "LesseeOperatingLeaseLiabilityMaturityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails2": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease.", "label": "Lessee Operating Lease Liability Payments Due", "totalLabel": "Total future minimum operating lease payments" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": 10060.0, "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 rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.", "label": "Lessee Operating Lease Liability Payments Due After Rolling Year Five", "terseLabel": "Thereafter" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": 10050.0, "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 rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.", "label": "Lessee Operating Lease Liability Payments Due In Rolling Year Five", "terseLabel": "2025" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": 10040.0, "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 rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.", "label": "Lessee Operating Lease Liability Payments Due In Rolling Year Four", "terseLabel": "2024" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": 10030.0, "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 rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.", "label": "Lessee Operating Lease Liability Payments Due In Rolling Year Three", "terseLabel": "2023" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": 10020.0, "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 rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.", "label": "Lessee Operating Lease Liability Payments Due In Rolling Year Two", "terseLabel": "2022" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails": { "order": 10010.0, "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 rolling twelve months following latest statement of financial position date. For interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.", "label": "Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months", "terseLabel": "2021" } } }, "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": { "auth_ref": [ "r534" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails2": { "order": 10010.0, "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": "Amounts representing interest" } } }, "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LesseeOperatingLeasesTextBlock": { "auth_ref": [ "r536" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeases" ], "xbrltype": "textBlockItemType" }, "us-gaap_LesseeOperatingSubleaseOptionToExtend": { "auth_ref": [ "r525" ], "lang": { "en-US": { "role": { "documentation": "Description of terms and conditions of option to extend operating sublease.", "label": "Lessee Operating Sublease Option To Extend", "terseLabel": "Sublease extension terms" } } }, "localname": "LesseeOperatingSubleaseOptionToExtend", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r22", "r103", "r176", "r252", "r452", "r457", "r458", "r505" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10010.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r20", "r103", "r252", "r505", "r588", "r640" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "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 Stockholders Equity", "totalLabel": "Total liabilities and shareholders\u2019 equity" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Liabilities And Stockholders Equity [Abstract]", "terseLabel": "LIABILITIES AND SHAREHOLDERS\u2019 EQUITY" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesFairValueDisclosure": { "auth_ref": [ "r489" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Fair value of financial and nonfinancial obligations.", "label": "Liabilities Fair Value Disclosure", "negatedLabel": "Liabilities at fair value", "verboseLabel": "Liabilities measured at fair value on nonrecurring basis" } } }, "localname": "LiabilitiesFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableAllowance": { "auth_ref": [ "r192", "r196", "r210", "r212" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails": { "order": 10020.0, "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 credit losses - loans", "terseLabel": "Loans, allowance for credit losses", "verboseLabel": "Beginning balance, prior to adoption of ASC 326" } } }, "localname": "LoansAndLeasesReceivableAllowance", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableDisclosureAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Loans And Leases Receivable Disclosure [Abstract]" } } }, "localname": "LoansAndLeasesReceivableDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_LoansAndLeasesReceivableGrossCarryingAmount": { "auth_ref": [ "r191" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails": { "order": 10030.0, "parentTag": "us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome", "weight": 1.0 } }, "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 Carrying Amount", "terseLabel": "Principal Amount Outstanding" } } }, "localname": "LoansAndLeasesReceivableGrossCarryingAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome": { "auth_ref": [ "r191", "r204" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails": { "order": 10010.0, "parentTag": "us-gaap_LoansAndLeasesReceivableNetReportedAmount", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before allowance and after 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.", "label": "Loans And Leases Receivable Net Of Deferred Income", "totalLabel": "Loans, Net" } } }, "localname": "LoansAndLeasesReceivableNetOfDeferredIncome", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansAndLeasesReceivableNetReportedAmount": { "auth_ref": [ "r191", "r596" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10210.0, "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 Reported Amount", "terseLabel": "Loans (net of allowance for credit losses of $49,395 and $30,482, respectively)", "totalLabel": "Total loans, net", "verboseLabel": "Loans" } } }, "localname": "LoansAndLeasesReceivableNetReportedAmount", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansHeldForSaleFairValueDisclosure": { "auth_ref": [], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.", "label": "Loans Held For Sale Fair Value Disclosure", "terseLabel": "Loans held for sale" } } }, "localname": "LoansHeldForSaleFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock": { "auth_ref": [ "r211" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoans" ], "xbrltype": "textBlockItemType" }, "us-gaap_LoansReceivableFairValueDisclosure": { "auth_ref": [ "r211" ], "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" } } }, "localname": "LoansReceivableFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup": { "auth_ref": [ "r191", "r689" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10200.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.", "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebt": { "auth_ref": [ "r9", "r350", "r587", "r637" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10110.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.", "label": "Long Term Debt", "terseLabel": "Long-term borrowings, net of issuance costs of $742 and $727, respectively" } } }, "localname": "LongTermDebt", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_LongTermDebtFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.", "label": "Long Term Debt Fair Value", "terseLabel": "Long-term borrowings" } } }, "localname": "LongTermDebtFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_MarketingAndAdvertisingExpense": { "auth_ref": [ "r71" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10140.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The total expense recognized in the period for promotion, public relations, and brand or product advertising.", "label": "Marketing And Advertising Expense", "terseLabel": "Advertising and promotions" } } }, "localname": "MarketingAndAdvertisingExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_MaterialReconcilingItemsMember": { "auth_ref": [ "r178" ], "lang": { "en-US": { "role": { "documentation": "Items used in reconciling reportable segments' amounts to consolidated amount. Excludes corporate-level activity.", "label": "Material Reconciling Items [Member]", "terseLabel": "Holding Company and Other [Member]" } } }, "localname": "MaterialReconcilingItemsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputComparabilityAdjustmentMember": { "auth_ref": [ "r492" ], "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": "Appraisal Adjustments [Member]" } } }, "localname": "MeasurementInputComparabilityAdjustmentMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputConstantPrepaymentRateMember": { "auth_ref": [ "r492" ], "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 Rate [Member]" } } }, "localname": "MeasurementInputConstantPrepaymentRateMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputDiscountRateMember": { "auth_ref": [ "r492" ], "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 [Member]" } } }, "localname": "MeasurementInputDiscountRateMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputTypeAxis": { "auth_ref": [ "r492" ], "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" } } }, "localname": "MeasurementInputTypeAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "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" } } }, "localname": "MeasurementInputTypeDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember": { "auth_ref": [ "r215", "r370" ], "lang": { "en-US": { "role": { "documentation": "Debt securities collateralized by real estate mortgage loans (mortgages), issued by non-governmental sponsored enterprises.", "label": "Mortgage Backed Securities Issued By Private Enterprises [Member]", "terseLabel": "Privately Issued [Member]" } } }, "localname": "MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MortgageBackedSecuritiesMember": { "auth_ref": [ "r215", "r370", "r372", "r396", "r668" ], "lang": { "en-US": { "role": { "documentation": "Securities collateralized by mortgage loans.", "label": "Mortgage Backed Securities [Member]", "terseLabel": "Mortgage-Backed Securities [Member]" } } }, "localname": "MortgageBackedSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MortgageBankingMember": { "auth_ref": [ "r365" ], "lang": { "en-US": { "role": { "documentation": "Origination or servicing of loan secured by real property.", "label": "Mortgage Banking [Member]", "terseLabel": "Mortgage Banking [Member]" } } }, "localname": "MortgageBankingMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "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": "Mortgage Banking [Member]" } } }, "localname": "MortgagesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MunicipalBondsMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Long-term debt securities issued by state, city or local governments or the agencies operated by state, city or local governments.", "label": "Municipal Bonds [Member]", "terseLabel": "Municipal Bonds [Member]" } } }, "localname": "MunicipalBondsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r87" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10030.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "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 provided by (used in) financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided By Used In Financing Activities [Abstract]", "terseLabel": "Cash flows from financing activities:" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r87" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10020.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "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 (used in) provided by investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided By Used In Investing Activities [Abstract]", "terseLabel": "Cash flows from investing activities:" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r87", "r89", "r92" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10010.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect", "weight": 1.0 } }, "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 provided by operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Net Cash Provided By Used In Operating Activities [Abstract]", "terseLabel": "Cash flows from operating activities:" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r2", "r54", "r57", "r64", "r92", "r103", "r111", "r115", "r116", "r117", "r118", "r121", "r122", "r133", "r168", "r174", "r178", "r181", "r184", "r252", "r505", "r599", "r644" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 10010.0, "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10010.0, "parentTag": "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic", "weight": 1.0 } }, "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", "terseLabel": "Net income", "totalLabel": "Net income" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic": { "auth_ref": [ "r115", "r116", "r117", "r118", "r123", "r124", "r134", "r137", "r168", "r174", "r178", "r181", "r184" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.", "label": "Net Income Loss Available To Common Stockholders Basic", "terseLabel": "Net income available to common shareholders", "totalLabel": "Net income available to common shareholders" } } }, "localname": "NetIncomeLossAvailableToCommonStockholdersBasic", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "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": "Recent Accounting Pronouncements" } } }, "localname": "NewAccountingPronouncementsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_NondesignatedMember": { "auth_ref": [ "r467" ], "lang": { "en-US": { "role": { "documentation": "Derivative instrument not designated as hedging instrument under Generally Accepted Accounting Principles (GAAP).", "label": "Nondesignated [Member]", "terseLabel": "Derivatives Not Designated as Hedging Instruments [Member]" } } }, "localname": "NondesignatedMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesEffectOfDerivativeInstrumentsOnIncomeStatementDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetParentheticalDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NoninterestBearingDepositLiabilities": { "auth_ref": [ "r591" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10130.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NoninterestExpense": { "auth_ref": [ "r612" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails": { "order": 10040.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10070.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Total aggregate amount of all noninterest expense.", "label": "Noninterest Expense", "negatedLabel": "Noninterest expense", "totalLabel": "Total noninterest expense" } } }, "localname": "NoninterestExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NoninterestIncome": { "auth_ref": [ "r610" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails": { "order": 10030.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10060.0, "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest", "weight": 1.0 } }, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_NoninterestIncomeOtherOperatingIncome": { "auth_ref": [ "r61", "r597", "r648" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10300.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_NonperformingFinancingReceivableMember": { "auth_ref": [ "r200", "r283" ], "lang": { "en-US": { "role": { "documentation": "Category status of financial instruments in which payments are past due in accordance with the terms of the contract. Financial instruments include, but are not limited to, financing receivables, loans, debt, and investments.", "label": "Nonperforming Financing Receivable [Member]", "terseLabel": "Non-Performing [Member]" } } }, "localname": "NonperformingFinancingReceivableMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NotesReceivableGross": { "auth_ref": [ "r282", "r290", "r291" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, before allowance for credit loss, of financing receivable.", "label": "Notes Receivable Gross", "terseLabel": "Loans, Ending balance", "totalLabel": "Total Loans" } } }, "localname": "NotesReceivableGross", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NumberOfReportableSegments": { "auth_ref": [ "r156" ], "lang": { "en-US": { "role": { "documentation": "Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.", "label": "Number Of Reportable Segments", "terseLabel": "Number of reportable segments" } } }, "localname": "NumberOfReportableSegments", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingNarrativeDetails" ], "xbrltype": "integerItemType" }, "us-gaap_OccupancyNet": { "auth_ref": [ "r72", "r519", "r611" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10090.0, "parentTag": "us-gaap_NoninterestExpense", "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 and equipment" } } }, "localname": "OccupancyNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseCost": { "auth_ref": [ "r526", "r535" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails": { "order": 10010.0, "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 costs" } } }, "localname": "OperatingLeaseCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiability": { "auth_ref": [ "r521" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails2": { "order": 10020.0, "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": "Right of use lease obligations", "verboseLabel": "Present value of net future minimum operating lease payments" } } }, "localname": "OperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfFutureMinimumPaymentsUnderNonCancellableOperatingLeasesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList": { "auth_ref": [ "r522" ], "lang": { "en-US": { "role": { "documentation": "Indicates line item in statement of financial position that includes operating lease liability.", "label": "Operating Lease Liability Statement Of Financial Position Extensible List", "terseLabel": "Operating Lease, Liability, Statement of Financial Position [Extensible List]" } } }, "localname": "OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "extensibleListItemType" }, "us-gaap_OperatingLeasePayments": { "auth_ref": [ "r523", "r529" ], "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", "terseLabel": "Operating cash flows from operating leases" } } }, "localname": "OperatingLeasePayments", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAsset": { "auth_ref": [ "r520" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of lessee's right to use underlying asset under operating lease.", "label": "Operating Lease Right Of Use Asset", "totalLabel": "Net book value" } } }, "localname": "OperatingLeaseRightOfUseAsset", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList": { "auth_ref": [ "r522" ], "lang": { "en-US": { "role": { "documentation": "Indicates line item in statement of financial position that includes operating lease right-of-use asset.", "label": "Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List", "terseLabel": "Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]" } } }, "localname": "OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfClassificationOfRightOfUseAssetsAndLeaseLiabilitiesDetails" ], "xbrltype": "extensibleListItemType" }, "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": { "auth_ref": [ "r532", "r535" ], "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": "Operating leases, weighted-average discount rate" } } }, "localname": "OperatingLeaseWeightedAverageDiscountRatePercent", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1": { "auth_ref": [ "r531", "r535" ], "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 Term1", "terseLabel": "Operating leases, weighted average remaining lease term" } } }, "localname": "OperatingLeaseWeightedAverageRemainingLeaseTerm1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_OperatingSegmentsMember": { "auth_ref": [ "r173", "r174", "r175", "r176", "r178", "r184" ], "lang": { "en-US": { "role": { "documentation": "Identifies components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.", "label": "Operating Segments [Member]", "terseLabel": "Operating Segment [Member]" } } }, "localname": "OperatingSegmentsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherAssets": { "auth_ref": [ "r5", "r583", "r633" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10250.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherAssetsMember": { "auth_ref": [ "r469", "r484" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other assets.", "label": "Other Assets [Member]", "terseLabel": "Other Assets [Member]" } } }, "localname": "OtherAssetsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax": { "auth_ref": [ "r39", "r40", "r47" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 10030.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax and adjustment, of 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) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.", "label": "Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax", "terseLabel": "Securities available for sale and transferred securities" } } }, "localname": "OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax": { "auth_ref": [ "r51", "r507", "r509", "r513" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": 10050.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax and reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income Loss Before Reclassifications Before Tax", "terseLabel": "Other comprehensive income (loss), before Reclassifications, Pre-tax Amount" } } }, "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax": { "auth_ref": [ "r51", "r60", "r507", "r509", "r513" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": 10010.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount after tax, before reclassification adjustments of other comprehensive income (loss).", "label": "Other Comprehensive Income Loss Before Reclassifications Net Of Tax", "terseLabel": "Other comprehensive income (loss), before Reclassifications, Net-of-tax Amount", "verboseLabel": "Other comprehensive income (loss) before reclassifications" } } }, "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax": { "auth_ref": [ "r48" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": 10030.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossTax", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit) allocated to other comprehensive income (loss) before reclassification adjustment from accumulated other comprehensive income (loss).", "label": "Other Comprehensive Income Loss Before Reclassifications Tax", "terseLabel": "Other comprehensive income (loss), before Reclassifications, Tax Effect" } } }, "localname": "OtherComprehensiveIncomeLossBeforeReclassificationsTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent": { "auth_ref": [ "r449", "r450", "r455" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of other comprehensive income (loss) attributable to parent entity.", "label": "Other Comprehensive Income Loss Before Tax Portion Attributable To Parent", "totalLabel": "Other comprehensive income (loss), Pre-tax Amount" } } }, "localname": "OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax": { "auth_ref": [ "r38", "r47" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 10040.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.", "label": "Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax", "terseLabel": "Hedging derivative instruments" } } }, "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTax": { "auth_ref": [ "r55", "r58", "r60", "r65", "r354", "r507", "r512", "r513", "r600", "r645" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 10020.0, "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, net of tax", "totalLabel": "Total other comprehensive income, net of tax" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]", "terseLabel": "Other comprehensive income (loss), net of tax:" } } }, "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax": { "auth_ref": [ "r44", "r47" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited": { "order": 10050.0, "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 Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax", "negatedLabel": "Pension and post-retirement obligations" } } }, "localname": "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherComprehensiveIncomeLossTax": { "auth_ref": [ "r48", "r65", "r435", "r445", "r447", "r507", "r510", "r513", "r600", "r645" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit) allocated to other comprehensive income (loss).", "label": "Other Comprehensive Income Loss Tax", "totalLabel": "Other comprehensive income (loss), Tax Effect" } } }, "localname": "OtherComprehensiveIncomeLossTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherLiabilities": { "auth_ref": [ "r593" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10120.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherLiabilitiesMember": { "auth_ref": [ "r469", "r484" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption encompassing other liabilities.", "label": "Other Liabilities [Member]", "terseLabel": "Other Liabilities [Member]" } } }, "localname": "OtherLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnBalanceSheetDetails" ], "xbrltype": "domainItemType" }, "us-gaap_OtherNoninterestExpense": { "auth_ref": [ "r612" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10170.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of noninterest expense classified as other.", "label": "Other Noninterest Expense", "terseLabel": "Other" } } }, "localname": "OtherNoninterestExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain": { "auth_ref": [ "r248" ], "lang": { "en-US": { "role": { "documentation": "Provides the categories of debt securities, available-for-sale or held-to-maturity, on which an entity may recognize other than temporary impairments (OTTI) for which a portion related to credit losses has been recognized in earnings and a portion related to all other factors has been recognized in other comprehensive income.", "label": "Other Than Temporary Impairment Credit Losses Recognized In Earnings Categories Of Investments [Domain]", "terseLabel": "Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments" } } }, "localname": "OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PassMember": { "auth_ref": [ "r200", "r283" ], "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": "Uncriticized [Member]" } } }, "localname": "PassMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PastDueFinancingReceivablesTableTextBlock": { "auth_ref": [ "r207", "r208", "r272", "r291" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of aging analysis for financing receivable.", "label": "Past Due Financing Receivables Table [Text Block]", "terseLabel": "Recorded Investment by Loan Class in Current and Nonaccrual Loans" } } }, "localname": "PastDueFinancingReceivablesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale": { "auth_ref": [ "r86" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10260.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The aggregate amount of cash outflow for loans purchased and created with the intention to resell them in the near future.", "label": "Payments For Origination And Purchases Of Loans Held For Sale", "negatedLabel": "Originations of loans held for sale" } } }, "localname": "PaymentsForOriginationAndPurchasesOfLoansHeldForSale", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromLifeInsurancePolicies": { "auth_ref": [ "r105" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10160.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net cash outflow or inflow for net proceeds and payments derived from carrying life insurance policies for which the entity is the beneficiary.", "label": "Payments For Proceeds From Life Insurance Policies", "negatedLabel": "Purchases of company owned life insurance, net of proceeds received" } } }, "localname": "PaymentsForProceedsFromLifeInsurancePolicies", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromLoansAndLeases": { "auth_ref": [ "r105" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10140.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan and lease balances which are not originated or purchased specifically for resale. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both.", "label": "Payments For Proceeds From Loans And Leases", "negatedLabel": "Net loan originations" } } }, "localname": "PaymentsForProceedsFromLoansAndLeases", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForProceedsFromOtherInvestingActivities": { "auth_ref": [ "r77", "r80", "r105" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10170.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash (inflow) outflow from investing activities classified as other.", "label": "Payments For Proceeds From Other Investing Activities", "negatedLabel": "Proceeds from sales of other assets" } } }, "localname": "PaymentsForProceedsFromOtherInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForRepurchaseOfCommonStock": { "auth_ref": [ "r81" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10060.0, "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": "Purchases of common stock for treasury" } } }, "localname": "PaymentsForRepurchaseOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsForRestructuring": { "auth_ref": [ "r84", "r327" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.", "label": "Payments For Restructuring", "negatedLabel": "Cash payments" } } }, "localname": "PaymentsForRestructuring", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfChangesInRestructuringReserveDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsOfDividends": { "auth_ref": [ "r81" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10070.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.", "label": "Payments Of Dividends", "negatedLabel": "Cash dividends paid to common and preferred shareholders" } } }, "localname": "PaymentsOfDividends", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r75", "r78", "r214" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10080.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).", "label": "Payments To Acquire Available For Sale Securities Debt", "negatedLabel": "Purchases of available for sale securities" } } }, "localname": "PaymentsToAcquireAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireHeldToMaturitySecurities": { "auth_ref": [ "r78", "r214" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10090.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of cash outflow through purchase of long-term held-to-maturity securities.", "label": "Payments To Acquire Held To Maturity Securities", "negatedLabel": "Purchases of held to maturity securities" } } }, "localname": "PaymentsToAcquireHeldToMaturitySecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": { "auth_ref": [ "r79" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10180.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": { "auth_ref": [ "r369", "r371", "r377", "r384", "r385", "r386", "r387", "r388", "r389", "r396", "r398", "r399", "r400", "r404" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for retirement benefits.", "label": "Pension And Other Postretirement Benefits Disclosure [Text Block]", "terseLabel": "Employee Benefit Plans" } } }, "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlans" ], "xbrltype": "textBlockItemType" }, "us-gaap_PerformingFinancingReceivableMember": { "auth_ref": [ "r200", "r283" ], "lang": { "en-US": { "role": { "documentation": "Category status of financial instruments in which payments are received or paid on a timely basis in accordance with the terms of the contract. Financial instruments include, but are not limited to, financing receivables, loans, debt instruments, and investments.", "label": "Performing Financing Receivable [Member]", "terseLabel": "Performing [Member]" } } }, "localname": "PerformingFinancingReceivableMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PlanNameAxis": { "auth_ref": [ "r409", "r421" ], "lang": { "en-US": { "role": { "documentation": "Information by plan name for share-based payment arrangement.", "label": "Plan Name [Axis]", "terseLabel": "Plan Name" } } }, "localname": "PlanNameAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_PlanNameDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Plan name for share-based payment arrangement.", "label": "Plan Name [Domain]", "terseLabel": "Plan Name" } } }, "localname": "PlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PortionAtFairValueFairValueDisclosureMember": { "auth_ref": [ "r501" ], "lang": { "en-US": { "role": { "documentation": "Measured at fair value for financial reporting purposes.", "label": "Portion At Fair Value Fair Value Disclosure [Member]", "terseLabel": "Fair Value Disclosure Item Amounts [Default]" } } }, "localname": "PortionAtFairValueFairValueDisclosureMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockDividendRatePercentage": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "The percentage rate used to calculate dividend payments on preferred stock.", "label": "Preferred Stock Dividend Rate Percentage", "terseLabel": "Preferred stock, dividend percentage" } } }, "localname": "PreferredStockDividendRatePercentage", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "percentItemType" }, "us-gaap_PreferredStockDividendsIncomeStatementImpact": { "auth_ref": [], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10020.0, "parentTag": "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.", "label": "Preferred Stock Dividends Income Statement Impact", "terseLabel": "Preferred stock dividends" } } }, "localname": "PreferredStockDividendsIncomeStatementImpact", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PreferredStockDividendsPerShareDeclared": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Aggregate dividends declared during the period for each share of preferred stock outstanding.", "label": "Preferred Stock Dividends Per Share Declared", "terseLabel": "Preferred stock dividends per share, declared" } } }, "localname": "PreferredStockDividendsPerShareDeclared", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Preferred shares may provide a preferential dividend to the dividend on common stock and may take precedence over common stock in the event of a liquidation. Preferred shares typically represent an ownership interest in the company.", "label": "Preferred Stock [Member]", "terseLabel": "Preferred Equity [Member]" } } }, "localname": "PreferredStockMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_PreferredStockParOrStatedValuePerShare": { "auth_ref": [ "r12" ], "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" } } }, "localname": "PreferredStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockSharesAuthorized": { "auth_ref": [ "r12" ], "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" } } }, "localname": "PreferredStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesIssued": { "auth_ref": [ "r12" ], "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" } } }, "localname": "PreferredStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockValue": { "auth_ref": [ "r12" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10030.0, "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", "terseLabel": "Total preferred equity" } } }, "localname": "PreferredStockValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PriorPeriodReclassificationAdjustmentDescription": { "auth_ref": [ "r0" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for reclassification affecting comparability of financial statement. Excludes amendment to accounting standards, other change in accounting principle, and correction of error.", "label": "Prior Period Reclassification Adjustment Description", "terseLabel": "Reclassifications" } } }, "localname": "PriorPeriodReclassificationAdjustmentDescription", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_PrivatePlacementMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "A private placement is a direct offering of securities to a limited number of sophisticated investors such as insurance companies, pension funds, mezzanine funds, stock funds and trusts.", "label": "Private Placement [Member]", "terseLabel": "Private Placement [Member]" } } }, "localname": "PrivatePlacementMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities": { "auth_ref": [ "r75", "r76", "r214" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10100.0, "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 Available For Sale Securities", "terseLabel": "Proceeds from principal payments, maturities and calls on available for sale securities" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities": { "auth_ref": [ "r76", "r214" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10110.0, "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 principal payments, maturities and calls on held to maturity securities" } } }, "localname": "ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromRepaymentsOfShortTermDebt": { "auth_ref": [ "r105" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10050.0, "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 decrease in short-term borrowings" } } }, "localname": "ProceedsFromRepaymentsOfShortTermDebt", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt": { "auth_ref": [ "r75", "r76", "r214" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10120.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "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 Available For Sale Securities Debt", "terseLabel": "Proceeds from sales of securities available for sale", "verboseLabel": "Proceeds from sales" } } }, "localname": "ProceedsFromSaleOfAvailableForSaleSecuritiesDebt", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesSalesOfSecuritiesAvailableForSaleDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfHeldToMaturitySecurities": { "auth_ref": [ "r76", "r214" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10130.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.", "label": "Proceeds From Sale Of Held To Maturity Securities", "terseLabel": "Proceeds from sales of securities held to maturity" } } }, "localname": "ProceedsFromSaleOfHeldToMaturitySecurities", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromSaleOfLoansHeldForSale": { "auth_ref": [ "r82", "r86" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10250.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.", "label": "Proceeds From Sale Of Loans Held For Sale", "terseLabel": "Proceeds from sale of loans held for sale" } } }, "localname": "ProceedsFromSaleOfLoansHeldForSale", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfessionalFees": { "auth_ref": [ "r670", "r671" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10100.0, "parentTag": "us-gaap_NoninterestExpense", "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 services" } } }, "localname": "ProfessionalFees", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfitLoss": { "auth_ref": [ "r2", "r54", "r57", "r85", "r103", "r111", "r121", "r122", "r168", "r174", "r178", "r181", "r184", "r252", "r449", "r453", "r454", "r459", "r460", "r505", "r618" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10190.0, "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": "Profit Loss", "terseLabel": "Net income" } } }, "localname": "ProfitLoss", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_PropertyPlantAndEquipmentNet": { "auth_ref": [ "r3", "r4", "r323", "r642" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10230.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "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" } } }, "localname": "PropertyPlantAndEquipmentNet", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProvisionForLoanLeaseAndOtherLosses": { "auth_ref": [ "r90", "r193", "r606" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10320.0, "parentTag": "us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.", "label": "Provision For Loan Lease And Other Losses", "verboseLabel": "Provision for credit losses" } } }, "localname": "ProvisionForLoanLeaseAndOtherLosses", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_RealizedGainLossOnInvestmentsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of realized gains and losses on investments reported in the statement of income.", "label": "Realized Gain Loss On Investments Table [Text Block]", "terseLabel": "Sales of Securities Available for Sale" } } }, "localname": "RealizedGainLossOnInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems": { "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": "Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]", "terseLabel": "Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]" } } }, "localname": "ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax": { "auth_ref": [ "r51", "r53", "r507", "r511", "r513" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails": { "order": 10010.0, "parentTag": "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "weight": 1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": 10060.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount before tax of reclassification adjustments of other comprehensive income (loss).", "label": "Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax", "negatedLabel": "Reclassification, Pre-tax Amount", "terseLabel": "Reclassification before tax" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": { "auth_ref": [ "r51", "r53", "r60", "r507", "r511", "r513" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails": { "order": null, "parentTag": null, "root": true, "weight": null }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": 10020.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount after tax of reclassification adjustments of other comprehensive income (loss).", "label": "Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax", "negatedLabel": "Amounts reclassified from accumulated other comprehensive income (loss)", "totalLabel": "Total reclassified for the period" } } }, "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationFromAociCurrentPeriodTax": { "auth_ref": [ "r48", "r52" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails": { "order": 10020.0, "parentTag": "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax", "weight": -1.0 }, "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails": { "order": 10040.0, "parentTag": "us-gaap_OtherComprehensiveIncomeLossTax", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss).", "label": "Reclassification From Aoci Current Period Tax", "negatedLabel": "Reclassification, Tax Effect", "negatedTerseLabel": "Reclassification tax" } } }, "localname": "ReclassificationFromAociCurrentPeriodTax", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by item reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification Out Of Accumulated Other Comprehensive Income [Axis]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Item reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification Out Of Accumulated Other Comprehensive Income [Domain]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identifies item reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification Out Of Accumulated Other Comprehensive Income [Member]", "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Member]" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about items reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification Out Of Accumulated Other Comprehensive Income [Table]", "terseLabel": "Reclassification Out Of Accumulated Other Comprehensive Income [Table]" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).", "label": "Reclassification Out Of Accumulated Other Comprehensive Income Table [Text Block]", "terseLabel": "Amounts Reclassified Out Of Each Component Of Accumulated Other Comprehensive Income (Loss)" } } }, "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock": { "auth_ref": [ "r175", "r178" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of all significant reconciling items in the reconciliation of total assets from reportable segments to the entity's consolidated assets.", "label": "Reconciliation Of Assets From Segment To Consolidated [Text Block]", "terseLabel": "Business Segment Assets" } } }, "localname": "ReconciliationOfAssetsFromSegmentToConsolidatedTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock": { "auth_ref": [ "r174", "r178" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment.", "label": "Reconciliation Of Operating Profit Loss From Segments To Consolidated [Text Block]", "terseLabel": "Business Segment Profit (Loss)" } } }, "localname": "ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ResidentialMortgageMember": { "auth_ref": [ "r290" ], "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 Real Estate Loans [Member]" } } }, "localname": "ResidentialMortgageMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestrictedStockMember": { "auth_ref": [ "r138" ], "lang": { "en-US": { "role": { "documentation": "Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met.", "label": "Restricted Stock [Member]", "terseLabel": "Restricted Stock Awards [Member]" } } }, "localname": "RestrictedStockMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "domainItemType" }, "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 R S U [Member]", "terseLabel": "RSUs [Member]" } } }, "localname": "RestrictedStockUnitsRSUMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestructuringAndRelatedActivitiesAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Restructuring And Related Activities [Abstract]" } } }, "localname": "RestructuringAndRelatedActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock": { "auth_ref": [ "r339" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.", "label": "Restructuring And Related Activities Disclosure [Text Block]", "terseLabel": "Restructuring Charges" } } }, "localname": "RestructuringAndRelatedActivitiesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringCharges" ], "xbrltype": "textBlockItemType" }, "us-gaap_RestructuringCharges": { "auth_ref": [ "r91", "r326", "r332", "r336" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10160.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.", "label": "Restructuring Charges", "terseLabel": "Restructuring charges" } } }, "localname": "RestructuringCharges", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestructuringChargesMember": { "auth_ref": [ "r328", "r332", "r337" ], "lang": { "en-US": { "role": { "documentation": "Primary financial statement caption in which the reported facts about restructuring charges have been included.", "label": "Restructuring Charges [Member]", "terseLabel": "Restructuring Charges [Member]" } } }, "localname": "RestructuringChargesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RestructuringCostAndReserveAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of restructuring cost.", "label": "Restructuring Cost And Reserve [Axis]", "terseLabel": "Restructuring Type" } } }, "localname": "RestructuringCostAndReserveAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RestructuringCostAndReserveLineItems": { "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": "Restructuring Cost And Reserve [Line Items]", "terseLabel": "Restructuring Cost And Reserve [Line Items]" } } }, "localname": "RestructuringCostAndReserveLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RestructuringCosts": { "auth_ref": [ "r91" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.", "label": "Restructuring Costs", "terseLabel": "Restructuring charges", "totalLabel": "Total" } } }, "localname": "RestructuringCosts", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfChangesInRestructuringReserveDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RestructuringReserve": { "auth_ref": [ "r327", "r333" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.", "label": "Restructuring Reserve", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance" } } }, "localname": "RestructuringReserve", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfChangesInRestructuringReserveDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r16", "r361", "r429", "r639", "r662", "r667" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10060.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [ "r107", "r108", "r109", "r112", "r120", "r122", "r257", "r426", "r427", "r428", "r439", "r440", "r658", "r660" ], "lang": { "en-US": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Retained Earnings [Member]", "terseLabel": "Retained Earnings [Member]" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": { "auth_ref": [ "r530", "r535" ], "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": "Right of use assets obtained in exchange for new operating lease liabilities" } } }, "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SaleOfStockNameOfTransactionDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.", "label": "Sale Of Stock Name Of Transaction [Domain]", "terseLabel": "Sale of Stock" } } }, "localname": "SaleOfStockNameOfTransactionDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable": { "auth_ref": [ "r30" ], "lang": { "en-US": { "role": { "documentation": "Schedule itemizing specific 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]", "terseLabel": "Schedule Of Accounts Notes Loans And Financing Receivable [Table]" } } }, "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansLoanPortfolioDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock": { "auth_ref": [ "r30" ], "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 [Text Block]", "terseLabel": "Loan Portfolio" } } }, "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r51", "r512", "r513" ], "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 Income (Loss)" } } }, "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable": { "auth_ref": [ "r138" ], "lang": { "en-US": { "role": { "documentation": "Schedule for securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by Antidilutive Securities.", "label": "Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]", "terseLabel": "Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSSharesExcludedFromComputationOfDilutedEPSDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock": { "auth_ref": [ "r138" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.", "label": "Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block]", "terseLabel": "Shares Excluded from Computation of Diluted EPS" } } }, "localname": "ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of supplemental cash flow information for the periods presented.", "label": "Schedule Of Cash Flow Supplemental Disclosures Table [Text Block]", "terseLabel": "Summary of Supplemental Cash Flow Information" } } }, "localname": "ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock": { "auth_ref": [ "r37" ], "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": "Schedule Of Comprehensive Income Loss Table [Text Block]", "terseLabel": "Components of Other Comprehensive Income (Loss)" } } }, "localname": "ScheduleOfComprehensiveIncomeLossTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock": { "auth_ref": [ "r470", "r476", "r480" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments.", "label": "Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance [Text Block]", "terseLabel": "Effect of Derivative Instruments on the Income Statement" } } }, "localname": "ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock": { "auth_ref": [ "r475" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.", "label": "Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block]", "terseLabel": "Fair Values of Derivative Instruments on the Balance Sheet" } } }, "localname": "ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureDerivativeInstrumentsAndHedgingActivitiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": { "auth_ref": [ "r137" ], "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": "Reconciliation of Earnings and Shares Used in Calculating Basic and Diluted EPS" } } }, "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock": { "auth_ref": [ "r408", "r419", "r430" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.", "label": "Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block]", "terseLabel": "Share-Based Compensation Expense Included In Consolidated Statements Of Income" } } }, "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTable": { "auth_ref": [ "r502", "r503" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFairValueOffBalanceSheetRisksTextBlock": { "auth_ref": [ "r502", "r503" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) 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 [Text Block]", "terseLabel": "Off-Balance Sheet Commitments" } } }, "localname": "ScheduleOfFairValueOffBalanceSheetRisksTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable": { "auth_ref": [ "r271" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about allowance for credit loss on financing receivable.", "label": "Schedule Of Financing Receivable Allowance For Credit Losses [Table]", "terseLabel": "Schedule Of Financing Receivable Allowance For Credit Losses [Table]" } } }, "localname": "ScheduleOfFinancingReceivableAllowanceForCreditLossesTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansChangesInAllowanceForCreditLossesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable": { "auth_ref": [ "r283", "r290" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about credit quality indicator for financing receivable.", "label": "Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table]", "terseLabel": "Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table]" } } }, "localname": "ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRetailLoanPortfolioCategorizedByPerformanceStatusDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFinancingReceivablesPastDueTable": { "auth_ref": [ "r272", "r291" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about aging analysis for financing receivable.", "label": "Schedule Of Financing Receivables Past Due [Table]", "terseLabel": "Schedule Of Financing Receivables Past Due [Table]" } } }, "localname": "ScheduleOfFinancingReceivablesPastDueTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansRecordedInvestmentByLoanClassInCurrentAndNonaccrualLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock": { "auth_ref": [ "r316", "r317" ], "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": "Gross Carrying Amount Accumulated Amortization and Net Book Value" } } }, "localname": "ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfGoodwillTable": { "auth_ref": [ "r312", "r314" ], "lang": { "en-US": { "role": { "documentation": "Schedule of goodwill and the changes during the year due to acquisition, sale, impairment or for other reasons.", "label": "Schedule Of Goodwill [Table]", "terseLabel": "Schedule Of Goodwill [Table]" } } }, "localname": "ScheduleOfGoodwillTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfGoodwillTextBlock": { "auth_ref": [ "r312", "r314" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.", "label": "Schedule Of Goodwill [Text Block]", "terseLabel": "Changes in Carrying Amount of Goodwill" } } }, "localname": "ScheduleOfGoodwillTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfImpairedFinancingReceivableTable": { "auth_ref": [ "r199" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansSummaryOfCollateralDependentLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfInvestmentsLineItems": { "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 Investments [Line Items]", "terseLabel": "Schedule Of Investments [Line Items]" } } }, "localname": "ScheduleOfInvestmentsLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfInvestmentsTable": { "auth_ref": [ "r672" ], "lang": { "en-US": { "role": { "documentation": "A container table for all schedule of investment items. It ties in the \"Legal Entity [Axis]\" to all of its contained line items.", "label": "Schedule Of Investments [Table]", "terseLabel": "Schedule Of Investments [Table]" } } }, "localname": "ScheduleOfInvestmentsTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock": { "auth_ref": [ "r378" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.", "label": "Schedule Of Net Benefit Costs Table [Text Block]", "terseLabel": "Components of Net Periodic Benefit Expense" } } }, "localname": "ScheduleOfNetBenefitCostsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEmployeeBenefitPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRestructuringAndRelatedCostsTable": { "auth_ref": [ "r330", "r331", "r334" ], "lang": { "en-US": { "role": { "documentation": "Table presenting the description of the restructuring costs, such as the expected cost; the costs incurred during the period; the cumulative costs incurred as of the balance sheet date; the income statement caption within which the restructuring charges recognized for the period are included; and the amount of and periodic changes to an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost by type of restructuring.", "label": "Schedule Of Restructuring And Related Costs [Table]", "terseLabel": "Schedule Of Restructuring And Related Costs [Table]" } } }, "localname": "ScheduleOfRestructuringAndRelatedCostsTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock": { "auth_ref": [ "r330", "r331", "r334" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets.", "label": "Schedule Of Restructuring And Related Costs [Text Block]", "terseLabel": "Summary of Consolidated Statements of Income Classification of Restructuring Charges" } } }, "localname": "ScheduleOfRestructuringAndRelatedCostsTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock": { "auth_ref": [ "r327", "r335" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period.", "label": "Schedule Of Restructuring Reserve By Type Of Cost [Text Block]", "terseLabel": "Summary of Changes in Restructuring Reserve" } } }, "localname": "ScheduleOfRestructuringReserveByTypeOfCostTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable": { "auth_ref": [ "r168", "r171", "r177", "r312" ], "lang": { "en-US": { "role": { "documentation": "A table disclosing the profit or loss and total assets for each reportable segment of the entity. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.", "label": "Schedule Of Segment Reporting Information By Segment [Table]", "terseLabel": "Schedule Of Segment Reporting Information By Segment [Table]" } } }, "localname": "ScheduleOfSegmentReportingInformationBySegmentTable", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": { "auth_ref": [ "r409", "r421" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of information about share-based payment arrangement.", "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock": { "auth_ref": [ "r412" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.", "label": "Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block]", "terseLabel": "Summary of Restricted Stock Awards and Restricted Stock Units Activity" } } }, "localname": "ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfStockByClassTextBlock": { "auth_ref": [ "r11", "r12", "r13", "r351", "r352", "r353", "r355", "r356", "r357", "r358", "r359", "r360", "r361" ], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. 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. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.", "label": "Schedule Of Stock By Class [Text Block]", "terseLabel": "Changes in Shares of Common Stock" } } }, "localname": "ScheduleOfStockByClassTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock": { "auth_ref": [ "r246" ], "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": "Investments Gross Unrealized Losses and Fair Value" } } }, "localname": "ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": { "auth_ref": [ "r317" ], "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": "Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block]", "terseLabel": "Estimated Amortization Expense of Other Intangible Assets" } } }, "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember": { "auth_ref": [ "r485" ], "lang": { "en-US": { "role": { "documentation": "Fixed rate on U.S. dollar, constant-notional interest rate swap that has its variable-rate leg referenced to Secured Overnight Financing Rate (SOFR) with no additional spread over SOFR on variable-rate leg.", "label": "Secured Overnight Financing Rate Sofr Overnight Index Swap Rate [Member]", "terseLabel": "Secured Overnight Financing Rate (\u201cSOFR\u201d) [Member]" } } }, "localname": "SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentDomain": { "auth_ref": [ "r155", "r159", "r160", "r161", "r162", "r163", "r164", "r165", "r166", "r167", "r168", "r169", "r170", "r173", "r174", "r175", "r176", "r178", "r179", "r180", "r181", "r182", "r184", "r188", "r653" ], "lang": { "en-US": { "role": { "documentation": "Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.", "label": "Segment [Domain]", "terseLabel": "Segments" } } }, "localname": "SegmentDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SegmentReportingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Segment Reporting [Abstract]" } } }, "localname": "SegmentReportingAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_SegmentReportingDisclosureTextBlock": { "auth_ref": [ "r155", "r157", "r158", "r168", "r172", "r178", "r182", "r183", "r184", "r185", "r186", "r187", "r188", "r189" ], "lang": { "en-US": { "role": { "documentation": "The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.", "label": "Segment Reporting Disclosure [Text Block]", "terseLabel": "Segment Reporting" } } }, "localname": "SegmentReportingDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReporting" ], "xbrltype": "textBlockItemType" }, "us-gaap_SegmentReportingInformationLineItems": { "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": "Segment Reporting Information [Line Items]", "terseLabel": "Segment Reporting Information [Line Items]" } } }, "localname": "SegmentReportingInformationLineItems", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SeveranceCosts1": { "auth_ref": [ "r91", "r326", "r332", "r336" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails": { "order": 10010.0, "parentTag": "us-gaap_RestructuringCosts", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.", "label": "Severance Costs1", "terseLabel": "Severance costs" } } }, "localname": "SeveranceCosts1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesSummaryOfConsolidatedStatementsOfIncomeClassificationOfRestructuringChargesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensation": { "auth_ref": [ "r90" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited": { "order": 10230.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Amount of noncash expense for share-based payment arrangement.", "label": "Share Based Compensation", "terseLabel": "Share-based compensation", "verboseLabel": "Total share-based compensation expense" } } }, "localname": "ShareBasedCompensation", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShareBasedCompensationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Share Based Compensation [Abstract]", "terseLabel": "Share-based compensation plans:" } } }, "localname": "ShareBasedCompensationAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1": { "auth_ref": [ "r410" ], "lang": { "en-US": { "role": { "documentation": "Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, 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 Award Requisite Service Period1", "terseLabel": "Required service period" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "durationItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights": { "auth_ref": [ "r410" ], "lang": { "en-US": { "role": { "documentation": "Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.", "label": "Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights", "terseLabel": "Share-based vesting description" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod": { "auth_ref": [ "r414" ], "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": "Forfeited, number of shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue": { "auth_ref": [ "r418" ], "lang": { "en-US": { "role": { "documentation": "Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.", "label": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value", "terseLabel": "Forfeited, Weighted Average Market Price at Grant Date" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod": { "auth_ref": [ "r416" ], "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": "Granted, Number of Shares", "verboseLabel": "Restricted shares of common stock awarded" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r416" ], "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": "Granted, Weighted Average Market Price at Grant Date" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": { "auth_ref": [ "r415" ], "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": "Outstanding at end of period, Number of Shares", "periodStartLabel": "Outstanding at beginning of year, Number of Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue": { "auth_ref": [ "r415" ], "lang": { "en-US": { "role": { "documentation": "Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.", "label": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value", "periodEndLabel": "Outstanding at end of period, Weighted Average Market Price at Grant Date", "periodStartLabel": "Outstanding at beginning of year, Weighted Average Market Price at Grant Date" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": { "auth_ref": [ "r417" ], "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", "negatedLabel": "Vested, Number of Shares" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": { "auth_ref": [ "r417" ], "lang": { "en-US": { "role": { "documentation": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.", "label": "Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value", "terseLabel": "Vested, Weighted Average Market Price at Grant Date" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "perShareItemType" }, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansShareBasedCompensationExpenseIncludedInConsolidatedStatementsOfIncomeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails" ], "xbrltype": "stringItemType" }, "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": "Stock options awarded" } } }, "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": { "auth_ref": [ "r407", "r411" ], "lang": { "en-US": { "role": { "documentation": "Award under share-based payment arrangement.", "label": "Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]", "terseLabel": "Award Type" } } }, "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockAwardsAndRestrictedStockUnitsActivityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage": { "auth_ref": [ "r410" ], "lang": { "en-US": { "role": { "documentation": "Percentage of vesting of award under share-based payment arrangement.", "label": "Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage", "terseLabel": "Vesting percentage upon achievement of targets" } } }, "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "percentItemType" }, "us-gaap_ShortTermBorrowings": { "auth_ref": [ "r6", "r585", "r636" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10100.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.", "label": "Short Term Borrowings", "terseLabel": "Short-term borrowings" } } }, "localname": "ShortTermBorrowings", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_ShorttermDebtFairValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.", "label": "Shortterm Debt Fair Value", "terseLabel": "Short-term borrowings" } } }, "localname": "ShorttermDebtFairValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsCarryingAmountEstimatedFairValueAndPlacementInFairValueHierarchyOfFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SpecialMentionMember": { "auth_ref": [ "r200", "r283" ], "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 [Member]" } } }, "localname": "SpecialMentionMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_StandbyLettersOfCreditMember": { "auth_ref": [ "r346", "r348", "r448", "r669" ], "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 [Member]" } } }, "localname": "StandbyLettersOfCreditMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_StatementBusinessSegmentsAxis": { "auth_ref": [ "r1", "r155", "r159", "r160", "r161", "r162", "r163", "r164", "r165", "r166", "r167", "r168", "r169", "r170", "r173", "r174", "r175", "r176", "r178", "r179", "r180", "r181", "r182", "r184", "r188", "r312", "r325", "r329", "r338", "r653" ], "lang": { "en-US": { "role": { "documentation": "Information by business segments.", "label": "Statement Business Segments [Axis]", "terseLabel": "Segments" } } }, "localname": "StatementBusinessSegmentsAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsChangesInCarryingAmountOfGoodwillDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentAssetsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureSegmentReportingBusinessSegmentProfitLossDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r11", "r12", "r13", "r101", "r103", "r127", "r131", "r132", "r135", "r137", "r145", "r146", "r147", "r252", "r354", "r505" ], "lang": { "en-US": { "role": { "documentation": "Information by the different classes of stock of the entity.", "label": "Statement Class Of Stock [Axis]", "terseLabel": "Class of Stock" } } }, "localname": "StatementClassOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r29", "r107", "r108", "r109", "r112", "r120", "r122", "r144", "r257", "r354", "r361", "r426", "r427", "r428", "r439", "r440", "r507", "r508", "r509", "r510", "r511", "r513", "r658", "r659", "r660" ], "lang": { "en-US": { "role": { "documentation": "Information by component of equity.", "label": "Statement Equity Components [Axis]", "terseLabel": "Equity Components" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossAmountsReclassifiedOutOfEachComponentOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_StatementOfCashFlowsAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement Of Cash Flows [Abstract]" } } }, "localname": "StatementOfCashFlowsAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement Of Financial Position [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement Of Income And Comprehensive Income [Abstract]" } } }, "localname": "StatementOfIncomeAndComprehensiveIncomeAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Statement Of Stockholders Equity [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [ "r107", "r108", "r109", "r144", "r572" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansSummaryOfRestrictedStockUnitsAndPerformanceShareUnitsActivityDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation": { "auth_ref": [ "r405", "r433" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Value, after forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).", "label": "Stock Granted During Period Value Sharebased Compensation", "terseLabel": "Stock awards" } } }, "localname": "StockGrantedDuringPeriodValueSharebasedCompensation", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssued1": { "auth_ref": [ "r96", "r97", "r98" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "The fair value of stock issued in noncash financing activities.", "label": "Stock Issued1", "terseLabel": "Common stock issued for Courier Capital contingent earn-out" } } }, "localname": "StockIssued1", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodSharesAcquisitions": { "auth_ref": [ "r12", "r13", "r361" ], "lang": { "en-US": { "role": { "documentation": "Number of shares of stock issued during the period pursuant to acquisitions.", "label": "Stock Issued During Period Shares Acquisitions", "terseLabel": "Common stock issued for Courier Capital contingent earn-out" } } }, "localname": "StockIssuedDuringPeriodSharesAcquisitions", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesIssuedForServices": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.", "label": "Stock Issued During Period Shares Issued For Services", "terseLabel": "Shares issued in lieu of cash" } } }, "localname": "StockIssuedDuringPeriodSharesIssuedForServices", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareBasedCompensationPlansNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited": { "auth_ref": [ "r12", "r13", "r354", "r361" ], "lang": { "en-US": { "role": { "documentation": "Number of shares related to Restricted Stock Award forfeited during the period.", "label": "Stock Issued During Period Shares Restricted Stock Award Forfeited", "negatedLabel": "Restricted stock awards forfeited" } } }, "localname": "StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross": { "auth_ref": [ "r354", "r361" ], "lang": { "en-US": { "role": { "documentation": "Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.", "label": "Stock Issued During Period Shares Restricted Stock Award Gross", "terseLabel": "Restricted stock awards issued" } } }, "localname": "StockIssuedDuringPeriodSharesRestrictedStockAwardGross", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised": { "auth_ref": [ "r12", "r13", "r354", "r361", "r413" ], "lang": { "en-US": { "role": { "documentation": "Number of share options (or share units) exercised during the current period.", "label": "Stock Issued During Period Shares Stock Options Exercised", "terseLabel": "Stock options exercised" } } }, "localname": "StockIssuedDuringPeriodSharesStockOptionsExercised", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued": { "auth_ref": [ "r13", "r354", "r361" ], "lang": { "en-US": { "role": { "documentation": "Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.", "label": "Stock Issued During Period Shares Treasury Stock Reissued", "terseLabel": "Stock awards" } } }, "localname": "StockIssuedDuringPeriodSharesTreasuryStockReissued", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueNewIssues": { "auth_ref": [ "r12", "r13", "r354", "r361" ], "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": "Common stock issued" } } }, "localname": "StockIssuedDuringPeriodValueNewIssues", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross": { "auth_ref": [ "r12", "r13", "r354", "r361" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Aggregate value of stock related to Restricted Stock Awards issued during the period.", "label": "Stock Issued During Period Value Restricted Stock Award Gross", "terseLabel": "Restricted stock awards issued" } } }, "localname": "StockIssuedDuringPeriodValueRestrictedStockAwardGross", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "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": "Stock repurchase program, number of shares authorized to be repurchased" } } }, "localname": "StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r13", "r18", "r19", "r103", "r209", "r252", "r505" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10020.0, "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", "periodEndLabel": "Balance", "periodStartLabel": "Balance", "totalLabel": "Total shareholders\u2019 equity" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Stockholders Equity [Abstract]", "terseLabel": "Shareholders\u2019 equity:" } } }, "localname": "StockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityNoteAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Stockholders Equity Note [Abstract]" } } }, "localname": "StockholdersEquityNoteAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityNoteDisclosureTextBlock": { "auth_ref": [ "r102", "r361", "r364" ], "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquity" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubleaseIncome": { "auth_ref": [ "r528", "r535" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails": { "order": 10030.0, "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/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_SubsequentEventMember": { "auth_ref": [ "r514", "r538" ], "lang": { "en-US": { "role": { "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event [Member]", "terseLabel": "Subsequent Event [Member]" } } }, "localname": "SubsequentEventMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventTypeAxis": { "auth_ref": [ "r514", "r538" ], "lang": { "en-US": { "role": { "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Axis]", "terseLabel": "Subsequent Event Type" } } }, "localname": "SubsequentEventTypeAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventTypeDomain": { "auth_ref": [ "r514", "r538" ], "lang": { "en-US": { "role": { "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.", "label": "Subsequent Event Type [Domain]", "terseLabel": "Subsequent Event Type" } } }, "localname": "SubsequentEventTypeDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SubsequentEventsPolicyPolicyTextBlock": { "auth_ref": [ "r100" ], "lang": { "en-US": { "role": { "documentation": "Disclosure of accounting policy for reporting subsequent events.", "label": "Subsequent Events Policy Policy [Text Block]", "terseLabel": "Subsequent Events" } } }, "localname": "SubsequentEventsPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsidiarySaleOfStockAxis": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Information by type of sale of the entity's stock.", "label": "Subsidiary Sale Of Stock [Axis]", "terseLabel": "Sale of Stock" } } }, "localname": "SubsidiarySaleOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubstandardMember": { "auth_ref": [ "r200", "r283" ], "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 [Member]" } } }, "localname": "SubstandardMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansCommercialLoanPortfolioCategorizedByInternallyAssignedAssetClassificationDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SupplementalCashFlowInformationAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Supplemental Cash Flow Information [Abstract]", "terseLabel": "Supplemental information:" } } }, "localname": "SupplementalCashFlowInformationAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SuppliesAndPostageExpense": { "auth_ref": [ "r612" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited": { "order": 10120.0, "parentTag": "us-gaap_NoninterestExpense", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The aggregate amount of expenses directly related to the supplies and postage.", "label": "Supplies And Postage Expense", "terseLabel": "Supplies and postage" } } }, "localname": "SuppliesAndPostageExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfIncomeUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect": { "auth_ref": [ "r49" ], "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act.", "label": "Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect", "terseLabel": "Reclassification of income tax effects to retained earnings" } } }, "localname": "TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TimeDeposits": { "auth_ref": [ "r591", "r630" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10160.0, "parentTag": "us-gaap_Deposits", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-US": { "role": { "documentation": "Amount of time deposit liabilities, including certificates of deposit.", "label": "Time Deposits", "terseLabel": "Time deposits" } } }, "localname": "TimeDeposits", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_TransferToOtherRealEstate": { "auth_ref": [ "r96", "r97", "r98" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.", "label": "Transfer To Other Real Estate", "terseLabel": "Real estate and other assets acquired in settlement of loans" } } }, "localname": "TransferToOtherRealEstate", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesSummaryOfSupplementalCashFlowInformationDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": { "auth_ref": [ "r235", "r239", "r540", "r541", "r542", "r543", "r544", "r545", "r546", "r547", "r548", "r549", "r550", "r551", "r552", "r554", "r555", "r556", "r557", "r558", "r559", "r560", "r561", "r562", "r563", "r564", "r565", "r566", "r567", "r568", "r569", "r570" ], "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": "Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain]", "terseLabel": "Financial Instruments" } } }, "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesOffBalanceSheetCommitmentsDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TreasuryStockMember": { "auth_ref": [ "r28", "r362" ], "lang": { "en-US": { "role": { "documentation": "Shares of an entity that have been repurchased by the entity. This stock has no voting rights and receives no dividends. Note that treasury stock may be recorded at its total cost or separately as par (or stated) value and additional paid in capital. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer.", "label": "Treasury Stock [Member]", "terseLabel": "Treasury Stock [Member]" } } }, "localname": "TreasuryStockMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "domainItemType" }, "us-gaap_TreasuryStockShares": { "auth_ref": [ "r28", "r362" ], "lang": { "en-US": { "role": { "documentation": "Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.", "label": "Treasury Stock Shares", "periodEndLabel": "Treasury stock, ending balance", "periodStartLabel": "Treasury stock, beginning balance", "terseLabel": "Treasury stock, shares" } } }, "localname": "TreasuryStockShares", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "sharesItemType" }, "us-gaap_TreasuryStockSharesAcquired": { "auth_ref": [ "r13", "r354", "r361" ], "lang": { "en-US": { "role": { "documentation": "Number of shares that have been repurchased during the period and are being held in treasury.", "label": "Treasury Stock Shares Acquired", "terseLabel": "Treasury stock purchases" } } }, "localname": "TreasuryStockSharesAcquired", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureShareholdersEquityChangesInSharesOfCommonStockDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TreasuryStockValue": { "auth_ref": [ "r28", "r362", "r363" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited": { "order": 10080.0, "parentTag": "us-gaap_StockholdersEquity", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.", "label": "Treasury Stock Value", "negatedLabel": "Treasury stock, at cost \u2013 61,971 and 96,657 shares, respectively" } } }, "localname": "TreasuryStockValue", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_TreasuryStockValueAcquiredCostMethod": { "auth_ref": [ "r354", "r361", "r362" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.", "label": "Treasury Stock Value Acquired Cost Method", "negatedLabel": "Purchases of common stock for treasury" } } }, "localname": "TreasuryStockValueAcquiredCostMethod", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" ], "xbrltype": "monetaryItemType" }, "us-gaap_TypeOfAdoptionMember": { "auth_ref": [ "r111", "r112", "r113", "r114", "r254", "r255", "r256", "r257", "r258", "r259", "r422", "r423", "r424", "r425", "r426", "r427", "r428", "r429", "r437", "r438", "r439", "r440", "r574", "r575", "r576", "r656", "r657", "r658", "r659", "r660", "r661", "r662", "r663", "r664", "r665", "r666", "r667" ], "lang": { "en-US": { "role": { "documentation": "Amendment to accounting standards.", "label": "Type Of Adoption [Member]", "terseLabel": "Accounting Standards Update" } } }, "localname": "TypeOfAdoptionMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_TypeOfRestructuringDomain": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Identification of the types of restructuring costs.", "label": "Type Of Restructuring [Domain]", "terseLabel": "Type of Restructuring" } } }, "localname": "TypeOfRestructuringDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureRestructuringChargesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember": { "auth_ref": [ "r370", "r619" ], "lang": { "en-US": { "role": { "documentation": "Debentures, bonds and other debt securities issued by US government sponsored entities (GSEs), for example, but not limited to, Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac), Federal National Mortgage Association (FNMA or Fannie Mae), and the Federal Home Loan Bank (FHLB). Excludes debt issued by the Government National Mortgage Association (GNMA or Ginnie Mae).", "label": "U S Government Sponsored Enterprises Debt Securities [Member]", "terseLabel": "U.S. Government Agency And Government Sponsored Enterprises [Member]" } } }, "localname": "USGovernmentSponsoredEnterprisesDebtSecuritiesMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_USStatesAndPoliticalSubdivisionsMember": { "auth_ref": [ "r370", "r668" ], "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": "U S States And Political Subdivisions [Member]", "terseLabel": "State And Political Subdivisions [Member]" } } }, "localname": "USStatesAndPoliticalSubdivisionsMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesAmortizedCostAndFairValueOfInvestmentSecuritiesDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesInvestmentsGrossUnrealizedLossesAndFairValueDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UnamortizedDebtIssuanceExpense": { "auth_ref": [ "r21" ], "crdr": "debit", "lang": { "en-US": { "role": { "documentation": "The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.", "label": "Unamortized Debt Issuance Expense", "terseLabel": "Debt issuance costs" } } }, "localname": "UnamortizedDebtIssuanceExpense", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/StatementConsolidatedStatementsOfFinancialConditionUnauditedParenthetical" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnfundedLoanCommitmentMember": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Undisbursed funds of a credit facility in which the borrower may draw upon.", "label": "Unfunded Loan Commitment [Member]", "terseLabel": "Unfunded Commitments [Member]" } } }, "localname": "UnfundedLoanCommitmentMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UnrealizedGainLossOnInvestmentsTableTextBlock": { "auth_ref": [], "lang": { "en-US": { "role": { "documentation": "Tabular disclosure of unrealized gains and losses on investments.", "label": "Unrealized Gain Loss On Investments Table [Text Block]", "terseLabel": "Amortized Cost and Fair Value of Investment Securities" } } }, "localname": "UnrealizedGainLossOnInvestmentsTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureInvestmentSecuritiesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_UnusualOrInfrequentItemAxis": { "auth_ref": [ "r73" ], "lang": { "en-US": { "role": { "documentation": "Information by an event or transaction that is unusual in nature or infrequent in occurrence, or both.", "label": "Unusual Or Infrequent Item [Axis]", "terseLabel": "Unusual or Infrequent Item, or Both" } } }, "localname": "UnusualOrInfrequentItemAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "stringItemType" }, "us-gaap_UnusualOrInfrequentItemDomain": { "auth_ref": [ "r73" ], "lang": { "en-US": { "role": { "documentation": "Event or transaction that is unusual in nature or infrequent in occurrence, or both.", "label": "Unusual Or Infrequent Item [Domain]", "terseLabel": "Unusual or Infrequent Item, or Both" } } }, "localname": "UnusualOrInfrequentItemDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails", "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLoansNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r148", "r149", "r150", "r151", "r152", "r153", "r154" ], "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", "terseLabel": "Use of Estimates" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ValuationTechniqueAxis": { "auth_ref": [ "r492" ], "lang": { "en-US": { "role": { "documentation": "Information by valuation approach and technique.", "label": "Valuation Technique [Axis]", "terseLabel": "Valuation Approach and Technique" } } }, "localname": "ValuationTechniqueAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ValuationTechniqueDiscountedCashFlowMember": { "auth_ref": [ "r492" ], "lang": { "en-US": { "role": { "documentation": "Valuation technique calculating present value of future cash flows.", "label": "Valuation Technique Discounted Cash Flow [Member]", "terseLabel": "Discounted Cash Flow [Member]" } } }, "localname": "ValuationTechniqueDiscountedCashFlowMember", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ValuationTechniqueDomain": { "auth_ref": [ "r492" ], "lang": { "en-US": { "role": { "documentation": "Valuation approach and technique.", "label": "Valuation Technique [Domain]", "terseLabel": "Valuation Approach and Technique" } } }, "localname": "ValuationTechniqueDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureFairValueMeasurementsAdditionalQuantitativeInformationAboutAssetsMeasuredAtFairValueOnRecurringAndNonRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_VariableLeaseCost": { "auth_ref": [ "r527", "r535" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails": { "order": 10020.0, "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 costs" } } }, "localname": "VariableLeaseCost", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureLeasesSummaryOfLeaseCostsAndOtherLeaseInformationDetails" ], "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" } } }, "localname": "VariableRateAxis", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "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" } } }, "localname": "VariableRateDomain", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails" ], "xbrltype": "domainItemType" }, "us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract]", "terseLabel": "Incremental shares from assumed:" } } }, "localname": "WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r126", "r137" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "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 Diluted Shares Outstanding", "totalLabel": "Total diluted weighted average common shares outstanding" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesIssuedBasic": { "auth_ref": [ "r123", "r125" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "order": 10040.0, "parentTag": "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic", "weight": 1.0 } }, "lang": { "en-US": { "role": { "documentation": "This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).", "label": "Weighted Average Number Of Shares Issued Basic", "terseLabel": "Total shares issued" } } }, "localname": "WeightedAverageNumberOfSharesIssuedBasic", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": { "auth_ref": [], "lang": { "en-US": { "role": { "label": "Weighted Average Number Of Shares Outstanding [Abstract]", "terseLabel": "Weighted average common shares outstanding:" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingAbstract", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r123", "r137" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "order": 10010.0, "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", "totalLabel": "Total basic weighted average common shares outstanding" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesRestrictedStock": { "auth_ref": [ "r125" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "order": 10050.0, "parentTag": "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends.", "label": "Weighted Average Number Of Shares Restricted Stock", "negatedLabel": "Unvested restricted stock awards" } } }, "localname": "WeightedAverageNumberOfSharesRestrictedStock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesTreasuryStock": { "auth_ref": [ "r123" ], "calculation": { "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails": { "order": 10060.0, "parentTag": "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic", "weight": -1.0 } }, "lang": { "en-US": { "role": { "documentation": "Number of shares of treasury stock determined by relating the portion of time within a reporting period that treasury shares have been outstanding to the total time in that period. Treasury stock is stock that the Entity has issued but subsequently reacquired.", "label": "Weighted Average Number Of Shares Treasury Stock", "negatedLabel": "Treasury shares" } } }, "localname": "WeightedAverageNumberOfSharesTreasuryStock", "nsuri": "http://fasb.org/us-gaap/2020-01-31", "presentation": [ "http://www.fiiwarsaw.com/20200930/taxonomy/role/DisclosureEarningsPerCommonShareEPSReconciliationOfEarningsAndSharesUsedInCalculatingBasicAndDilutedEPSDetails" ], "xbrltype": "sharesItemType" } }, "unitCount": 11 } }, "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": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760" }, "r10": { "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=120391452&loc=d3e13212-122682" }, "r100": { "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" }, "r101": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(d))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r102": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(e)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r103": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(g)(1)(ii))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r104": { "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=120395691&loc=d3e23780-122690" }, "r105": { "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=120395691&loc=d3e24072-122690" }, "r106": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21914-107793" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21930-107793" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21711-107793" }, "r11": { "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=120391452&loc=d3e13212-122682" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21728-107793" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794" }, "r112": { "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" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(4)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794" }, "r117": { "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" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794" }, "r12": { "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=120391452&loc=d3e13212-122682" }, "r120": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794" }, "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=121326447&loc=d3e1448-109256" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1377-109256" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e2646-109256" }, "r126": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1505-109256" }, "r127": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1252-109256" }, "r128": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1707-109256" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1757-109256" }, "r13": { "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=120391452&loc=d3e13212-122682" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "28A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1500-109256" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1278-109256" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "55", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e2626-109256" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256" }, "r137": { "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" }, "r138": { "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" }, "r139": { "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" }, "r14": { "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=120391452&loc=d3e13212-122682" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=120380238&loc=d3e3842-109258" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258" }, "r143": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "260", "URI": "http://asc.fasb.org/topic&trid=2144383" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70229-108054" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055" }, "r148": { "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" }, "r149": { "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" }, "r15": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r150": { "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" }, "r151": { "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" }, "r152": { "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" }, "r153": { "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" }, "r154": { "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" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r16": { "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=120391452&loc=d3e13212-122682" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(j)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599" }, "r17": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(30)(a)(4))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "26", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599" }, "r175": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599" }, "r177": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "31", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599" }, "r18": { "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=120391452&loc=d3e13212-122682" }, "r180": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599" }, "r181": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599" }, "r182": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599" }, "r183": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599" }, "r184": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599" }, "r185": { "Name": "Accounting Standards Codification", "Paragraph": "34", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "40", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "41", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599" }, "r188": { "Name": "Accounting Standards Codification", "Paragraph": "42", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599" }, "r189": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "280", "URI": "http://asc.fasb.org/topic&trid=2134510" }, "r19": { "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=120391452&loc=d3e13212-122682" }, "r190": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4647-111522" }, "r191": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522" }, "r192": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r193": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r194": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r195": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(4)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "11B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524" }, "r2": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "205", "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760" }, "r20": { "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=120391452&loc=d3e13212-122682" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "29", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953659-111524" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5066-111524" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "34", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=SL6953401-111524" }, "r209": { "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" }, "r21": { "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=120391452&loc=d3e13212-122682" }, "r210": { "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" }, "r211": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/subtopic&trid=2196772" }, "r212": { "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=121614798&loc=d3e15032-111544" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121553693&loc=d3e26853-111562" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL6283291-111563" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aaa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563" }, "r22": { "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=120391452&loc=d3e13212-122682" }, "r220": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563" }, "r221": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r227": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r228": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(aaa)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r229": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r23": { "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=120391452&loc=d3e13212-122682" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r232": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(3)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)(4)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563" }, "r24": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(2))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269825-111563" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269825-111563" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269825-111563" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269825-111563" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563" }, "r247": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27337-111563" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27340-111563" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "8B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL6284393-111563" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.22(a)(3))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563" }, "r251": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "320", "URI": "http://asc.fasb.org/topic&trid=2196928" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571" }, "r253": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL82887624-210437" }, "r254": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437" }, "r255": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(3)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)(4)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437" }, "r26": { "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=120391452&loc=d3e13212-122682" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "30", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647444&loc=SL120269210-210444" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "5A", "Publisher": "FASB", "Section": "30", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647444&loc=SL120254536-210444" }, "r262": { "Name": "Accounting Standards Codification", "Paragraph": "8A", "Publisher": "FASB", "Section": "35", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121648281&loc=SL120267834-210445" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599878&loc=SL120267845-210446" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919244-210447" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919244-210447" }, "r267": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447" }, "r268": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447" }, "r269": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447" }, "r27": { "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=120391452&loc=d3e13212-122682" }, "r270": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(f)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447" }, "r271": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447" }, "r272": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919253-210447" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447" }, "r278": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919260-210447" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919272-210447" }, "r28": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.29,30)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "3C", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL120267966-210447" }, "r281": { "Name": "Accounting Standards Codification", "Paragraph": "3D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL120267969-210447" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL120270059-210447" }, "r286": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647567&loc=SL82921833-210448" }, "r287": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647567&loc=SL82921835-210448" }, "r288": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Subparagraph": "(d)(2)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647567&loc=SL82921835-210448" }, "r289": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647567&loc=SL82921842-210448" }, "r29": { "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=120391452&loc=d3e13212-122682" }, "r290": { "Name": "Accounting Standards Codification", "Paragraph": "79", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448" }, "r291": { "Name": "Accounting Standards Codification", "Paragraph": "80", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121647567&loc=SL82922355-210448" }, "r292": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "30", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121614247&loc=SL120267897-210452" }, "r293": { "Name": "Accounting Standards Codification", "Paragraph": "13A", "Publisher": "FASB", "Section": "35", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121565518&loc=SL120267917-210453" }, "r294": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "35", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121565518&loc=SL120269220-210453" }, "r295": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL120267853-210455" }, "r297": { "Name": "Accounting Standards Codification", "Paragraph": "3C", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL120267859-210455" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "3D", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL120267862-210455" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(1)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455" }, "r3": { "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=120391452&loc=d3e13212-122682" }, "r30": { "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=120391452&loc=d3e13212-122682" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)(2)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922890-210455" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922895-210455" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(i)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "30", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456" }, "r308": { "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" }, "r309": { "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" }, "r31": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.8)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r310": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975" }, "r311": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267" }, "r312": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267" }, "r313": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267" }, "r314": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "350", "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267" }, "r315": { "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" }, "r316": { "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" }, "r317": { "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" }, "r318": { "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" }, "r319": { "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" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r320": { "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" }, "r321": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "350", "URI": "http://asc.fasb.org/topic&trid=2144416" }, "r322": { "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" }, "r323": { "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" }, "r324": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "360", "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r330": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 5.P.3)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.3)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 5.P.4(b))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 5.P.4)", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r335": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(b)(2))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(b))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(c))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 5.P.4(d))", "Topic": "420", "URI": "http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747" }, "r339": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "420", "URI": "http://asc.fasb.org/topic&trid=2175745" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312" }, "r340": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308" }, "r341": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308" }, "r342": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r343": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349" }, "r344": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "450", "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349" }, "r345": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r346": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=121555522&loc=d3e12021-110248" }, "r347": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248" }, "r348": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "460", "URI": "http://asc.fasb.org/extlink&oid=121596127&loc=d3e12803-110250" }, "r349": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=99376301&loc=d3e1398-112600" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870" }, "r351": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764" }, "r352": { "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" }, "r353": { "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" }, "r354": { "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" }, "r355": { "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" }, "r356": { "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" }, "r357": { "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" }, "r358": { "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" }, "r359": { "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" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313" }, "r360": { "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" }, "r361": { "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=120397183&loc=d3e187085-122770" }, "r362": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655" }, "r363": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656" }, "r364": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "505", "URI": "http://asc.fasb.org/topic&trid=2208762" }, "r365": { "Name": "Accounting Standards Codification", "Paragraph": "91", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "606", "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046" }, "r366": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=109237824&loc=SL108413299-114919" }, "r367": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r368": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r369": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e526-108580" }, "r370": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r371": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r372": { "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=118255775&loc=d3e1928-114920" }, "r373": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r374": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(A)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r375": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(B)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r376": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(02)(C)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r377": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(iv)(03)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r378": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r379": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r380": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r381": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r382": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r383": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(h)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r384": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(l)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r385": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(o)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r386": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(p)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r387": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(q)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r388": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(r)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r389": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(r)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920" }, "r39": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r390": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r391": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r392": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(2)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r393": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r394": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(4)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r395": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(5)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920" }, "r396": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921" }, "r397": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921" }, "r398": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802" }, "r399": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "60", "Subparagraph": "(c)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964" }, "r4": { "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=120391452&loc=d3e13212-122682" }, "r40": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r400": { "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" }, "r401": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(d)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947" }, "r402": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(f)(3)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947" }, "r403": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "55", "SubTopic": "80", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948" }, "r404": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "715", "URI": "http://asc.fasb.org/topic&trid=2235017" }, "r405": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "30", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121321822&loc=d3e3913-113898" }, "r406": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121326096&loc=d3e4534-113899" }, "r407": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901" }, "r408": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901" }, "r409": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901" }, "r41": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r410": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r411": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(g)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r412": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r413": { "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=120381028&loc=d3e5070-113901" }, "r414": { "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=120381028&loc=d3e5070-113901" }, "r415": { "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=120381028&loc=d3e5070-113901" }, "r416": { "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=120381028&loc=d3e5070-113901" }, "r417": { "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=120381028&loc=d3e5070-113901" }, "r418": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)(iii)(3)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r419": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r420": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r421": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901" }, "r422": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r423": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r424": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r425": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r426": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r427": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(1)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r428": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "r429": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(g)(2)", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333" }, "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=121641772&loc=SL7669646-108580" }, "r430": { "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" }, "r431": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120383193&loc=d3e11149-113907" }, "r432": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=120383193&loc=d3e11178-113907" }, "r433": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "35", "SubTopic": "30", "Topic": "718", "URI": "http://asc.fasb.org/extlink&oid=121323062&loc=d3e15009-113911" }, "r434": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "718", "URI": "http://asc.fasb.org/topic&trid=2228938" }, "r435": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319" }, "r436": { "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" }, "r437": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740" }, "r438": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740" }, "r439": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "740" }, "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=121641772&loc=SL7669646-108580" }, "r440": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(3)", "Topic": "740" }, "r441": { "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=116825942&loc=d3e330036-122817" }, "r442": { "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=116825942&loc=d3e330036-122817" }, "r443": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.Fact.1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817" }, "r444": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.Fact.2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817" }, "r445": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=120385591&loc=d3e39076-109324" }, "r446": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=120385591&loc=d3e38679-109324" }, "r447": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=120385591&loc=d3e38679-109324" }, "r448": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "15", "SubTopic": "10", "Subparagraph": "(f)(2)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116873149&loc=d3e923-111674" }, "r449": { "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" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(j)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r450": { "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" }, "r451": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988" }, "r452": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988" }, "r453": { "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" }, "r454": { "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" }, "r455": { "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" }, "r456": { "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" }, "r457": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685" }, "r458": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685" }, "r459": { "Name": "Accounting Standards Codification", "Paragraph": "4J", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=120409616&loc=SL4591551-111686" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "10A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580" }, "r460": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=120409616&loc=SL4591552-111686" }, "r461": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958" }, "r462": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5579240-113959" }, "r463": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959" }, "r464": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959" }, "r465": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959" }, "r466": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)(ii)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41620-113959" }, "r467": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41620-113959" }, "r468": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41638-113959" }, "r469": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580" }, "r470": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959" }, "r471": { "Name": "Accounting Standards Codification", "Paragraph": "4A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959" }, "r472": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a),(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959" }, "r473": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959" }, "r474": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959" }, "r475": { "Name": "Accounting Standards Codification", "Paragraph": "4B", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959" }, "r476": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959" }, "r477": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(1)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959" }, "r478": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(5)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959" }, "r479": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624177-113959" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e640-108580" }, "r480": { "Name": "Accounting Standards Codification", "Paragraph": "4E", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624181-113959" }, "r481": { "Name": "Accounting Standards Codification", "Paragraph": "4K", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5708775-113959" }, "r482": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41641-113959" }, "r483": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=d3e41678-113959" }, "r484": { "Name": "Accounting Standards Codification", "Paragraph": "182", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121582272&loc=SL5629052-113961" }, "r485": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "25", "SubTopic": "20", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121607252&loc=SL5864739-113975" }, "r486": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "25", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986" }, "r487": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994" }, "r488": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "815", "URI": "http://asc.fasb.org/topic&trid=2229140" }, "r489": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "12A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL116659650-108580" }, "r490": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r491": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r492": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r493": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r494": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r495": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r496": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r497": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258" }, "r498": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258" }, "r499": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=SL6742756-110258" }, "r5": { "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=120391452&loc=d3e13212-122682" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e681-108580" }, "r500": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=SL6742756-110258" }, "r501": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=116690757&loc=d3e13220-108610" }, "r502": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611" }, "r503": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611" }, "r504": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=121572278&loc=d3e13476-108611" }, "r505": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612" }, "r506": { "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" }, "r507": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900" }, "r508": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r509": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(b)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "14A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580" }, "r510": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(c)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r511": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Subparagraph": "(d)", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r512": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900" }, "r513": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901" }, "r514": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901" }, "r515": { "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" }, "r516": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399" }, "r517": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "835", "URI": "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399" }, "r518": { "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" }, "r519": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Topic": "840", "URI": "http://asc.fasb.org/extlink&oid=121616839&loc=d3e45280-112737" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "17A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL34724391-108580" }, "r520": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977" }, "r521": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977" }, "r522": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918631-209977" }, "r523": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977" }, "r524": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(1)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980" }, "r525": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(a)(3)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980" }, "r526": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r527": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r528": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(e)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r529": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(1)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "17B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL34724394-108580" }, "r530": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(2)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r531": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(3)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r532": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(g)(4)", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r533": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980" }, "r534": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980" }, "r535": { "Name": "Accounting Standards Codification", "Paragraph": "53", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971" }, "r536": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "20", "Topic": "842", "URI": "http://asc.fasb.org/subtopic&trid=77888251" }, "r537": { "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" }, "r538": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662" }, "r539": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580" }, "r540": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r541": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)(ii)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r542": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r543": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r544": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r545": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(bb)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r546": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r547": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r548": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719" }, "r549": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580" }, "r550": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r551": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r552": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719" }, "r553": { "Name": "Accounting Standards Codification", "Paragraph": "4D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719" }, "r554": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "30", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728" }, "r555": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729" }, "r556": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746" }, "r557": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746" }, "r558": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746" }, "r559": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)(i)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580" }, "r560": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r561": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r562": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r563": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(4)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r564": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(5)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r565": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(6)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r566": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(a)(7)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r567": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(b)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r568": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(1)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r569": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(2)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r57": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580" }, "r570": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "50", "Subparagraph": "(e)(3)", "Topic": "860", "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746" }, "r571": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "910", "URI": "http://asc.fasb.org/extlink&oid=119991564&loc=SL119991595-234733" }, "r572": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.L)", "Topic": "924", "URI": "http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856" }, "r573": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959" }, "r574": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r575": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r576": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "926", "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079" }, "r577": { "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" }, "r578": { "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" }, "r579": { "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" }, "r58": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580" }, "r580": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "940", "URI": "http://asc.fasb.org/subtopic&trid=2176304" }, "r581": { "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=120398452&loc=d3e534808-122878" }, "r582": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(10)(1))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r583": { "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=120398452&loc=d3e534808-122878" }, "r584": { "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=120398452&loc=d3e534808-122878" }, "r585": { "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=120398452&loc=d3e534808-122878" }, "r586": { "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=120398452&loc=d3e534808-122878" }, "r587": { "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=120398452&loc=d3e534808-122878" }, "r588": { "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=120398452&loc=d3e534808-122878" }, "r589": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(6))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r59": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e557-108580" }, "r590": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03(7)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r591": { "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=120398452&loc=d3e534808-122878" }, "r592": { "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=120398452&loc=d3e534808-122878" }, "r593": { "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=120398452&loc=d3e534808-122878" }, "r594": { "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=120398452&loc=d3e534808-122878" }, "r595": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.9-03.7(a)(3))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878" }, "r596": { "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=120398452&loc=d3e534808-122878" }, "r597": { "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=120399700&loc=SL114874048-224260" }, "r598": { "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=120399700&loc=SL114874048-224260" }, "r599": { "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=120399700&loc=SL114874048-224260" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(19)(a))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&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=121640130&loc=d3e1436-108581" }, "r600": { "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=120399700&loc=SL114874048-224260" }, "r601": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(26))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r602": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04(27))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r603": { "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=120399700&loc=SL114874048-224260" }, "r604": { "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=120399700&loc=SL114874048-224260" }, "r605": { "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=120399700&loc=SL114874048-224260" }, "r606": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.11)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r607": { "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=120399700&loc=SL114874048-224260" }, "r608": { "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=120399700&loc=SL114874048-224260" }, "r609": { "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=120399700&loc=SL114874048-224260" }, "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=120395209&loc=SL114868656-224227" }, "r610": { "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=120399700&loc=SL114874048-224260" }, "r611": { "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=120399700&loc=SL114874048-224260" }, "r612": { "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=120399700&loc=SL114874048-224260" }, "r613": { "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=120399700&loc=SL114874048-224260" }, "r614": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.9-04.7)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260" }, "r615": { "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=120399700&loc=SL114874048-224260" }, "r616": { "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=120399700&loc=SL114874048-224260" }, "r617": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=121551529&loc=d3e60009-112784" }, "r618": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "235", "Subparagraph": "(SX 210.9-05(b)(2))", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884" }, "r619": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62557-112803" }, "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=120395209&loc=SL114868664-224227" }, "r620": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62586-112803" }, "r621": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62586-112803" }, "r622": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62586-112803" }, "r623": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(d)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=d3e62586-112803" }, "r624": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(a)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803" }, "r625": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(b)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803" }, "r626": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803" }, "r627": { "Name": "Accounting Standards Codification", "Paragraph": "3A", "Publisher": "FASB", "Section": "50", "SubTopic": "320", "Subparagraph": "(d)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=120252992&loc=SL120269850-112803" }, "r628": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "942", "URI": "http://asc.fasb.org/subtopic&trid=2209399" }, "r629": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "405", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817" }, "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=120395209&loc=SL114868664-224227" }, "r630": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "405", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818" }, "r631": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "470", "Subparagraph": "(c)", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823" }, "r632": { "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=120400017&loc=d3e572229-122910" }, "r633": { "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=120400017&loc=d3e572229-122910" }, "r634": { "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=120400017&loc=d3e572229-122910" }, "r635": { "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=120400017&loc=d3e572229-122910" }, "r636": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16)(a)(1))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r637": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(16))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r638": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r639": { "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=120400017&loc=d3e572229-122910" }, "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=120395209&loc=SL114868664-224227" }, "r640": { "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=120400017&loc=d3e572229-122910" }, "r641": { "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=120400017&loc=d3e572229-122910" }, "r642": { "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=120400017&loc=d3e572229-122910" }, "r643": { "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=120400017&loc=d3e572229-122910" }, "r644": { "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=120400993&loc=SL114874131-224263" }, "r645": { "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=120400993&loc=SL114874131-224263" }, "r646": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(22))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r647": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(23))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r648": { "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=120400993&loc=SL114874131-224263" }, "r649": { "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=120400993&loc=SL114874131-224263" }, "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=120395209&loc=SL114868664-224227" }, "r650": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(9))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r651": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04.1,4)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r652": { "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=120400993&loc=SL114874131-224263" }, "r653": { "Name": "Accounting Standards Codification", "Paragraph": "4H", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438" }, "r654": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(d)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121643868&loc=SL117782755-158439" }, "r655": { "Name": "Accounting Standards Codification", "Paragraph": "29F", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121639165&loc=SL117819544-158441" }, "r656": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(a)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r657": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(b)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r658": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r659": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(24))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227" }, "r660": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r661": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r662": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(i)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r663": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(ii)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r664": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(iii)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r665": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(g)(2)(iv)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r666": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r667": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641" }, "r668": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "80", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=121641442&loc=d3e19393-158473" }, "r669": { "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" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(25))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227" }, "r670": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "220", "Subparagraph": "(k)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=118262090&loc=SL114874205-224268" }, "r671": { "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=120401555&loc=SL114874292-224272" }, "r672": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611133-123010" }, "r673": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r674": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r675": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column B)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r676": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r677": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r678": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column C)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r679": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 1))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(7)(c))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227" }, "r680": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 6))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r681": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-12B(Column D)(Footnote 7))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611197-123010" }, "r682": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column B)(Footnote 2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=SL120429264-123010" }, "r683": { "Name": "Accounting Standards Codification", "Paragraph": "5D", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-13D(Column C)(Footnote 2))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=SL120429264-123010" }, "r684": { "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=120401592&loc=d3e611379-123010" }, "r685": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column B))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010" }, "r686": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column C))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010" }, "r687": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "S99", "SubTopic": "320", "Subparagraph": "(SX 210.12-15(Column D))", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=120401592&loc=d3e611379-123010" }, "r688": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "SubTopic": "320", "Topic": "946", "URI": "http://asc.fasb.org/subtopic&trid=2324412" }, "r689": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "310", "Topic": "948", "URI": "http://asc.fasb.org/extlink&oid=120238483&loc=d3e48678-111004" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03(9)(a))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227" }, "r690": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b" }, "r691": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "d1-1" }, "r692": { "Name": "Form 10-Q", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-13" }, "r693": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1-" }, "r694": { "Name": "Regulation 12B", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r695": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405" }, "r7": { "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=120391452&loc=d3e13212-122682" }, "r70": { "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=120395209&loc=SL114868664-224227" }, "r71": { "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=120395209&loc=SL114868664-224227" }, "r72": { "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=120395209&loc=SL114868664-224227" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=114868883&loc=SL114871943-224233" }, "r74": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "220", "URI": "http://asc.fasb.org/topic&trid=2134417" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3151-108585" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585" }, "r8": { "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=120391452&loc=d3e13212-122682" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3337-108585" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3000-108585" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3461-108585" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585" }, "r9": { "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=120391452&loc=d3e13212-122682" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3044-108585" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3095-108585" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4297-108586" }, "r96": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586" }, "r97": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4313-108586" }, "r98": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586" }, "r99": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=SL98516268-108586" } }, "version": "2.1" }