{ "instance": { "brhc10035299_10k.htm": { "axisCustom": 0, "axisStandard": 12, "contextCount": 96, "dts": { "calculationLink": { "local": [ "rvac-20211231_cal.xml" ] }, "definitionLink": { "local": [ "rvac-20211231_def.xml" ] }, "inline": { "local": [ "brhc10035299_10k.htm" ] }, "labelLink": { "local": [ "rvac-20211231_lab.xml" ] }, "presentationLink": { "local": [ "rvac-20211231_pre.xml" ] }, "schema": { "local": [ "rvac-20211231.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/2004/ref-2004-08-10.xsd", "http://www.xbrl.org/2005/xbrldt-2005.xsd", "http://www.xbrl.org/2006/ref-2006-02-27.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", "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd", "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd", "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-roles-2021-01-31.xsd", "https://xbrl.fasb.org/srt/2021/elts/srt-types-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd", "https://xbrl.fasb.org/us-gaap/2021/elts/us-types-2021-01-31.xsd", "https://xbrl.sec.gov/country/2021/country-2021.xsd", "https://xbrl.sec.gov/currency/2021/currency-2021.xsd", "https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd", "https://xbrl.sec.gov/exch/2021/exch-2021.xsd", "https://xbrl.sec.gov/naics/2021/naics-2021.xsd", "https://xbrl.sec.gov/sic/2021/sic-2021.xsd", "https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd" ] } }, "elementCount": 372, "entityCount": 1, "hidden": { "http://riverview.com/20211231": 2, "http://xbrl.sec.gov/dei/2021q4": 5, "total": 7 }, "keyCustom": 58, "keyStandard": 180, "memberCustom": 13, "memberStandard": 20, "nsprefix": "rvac", "nsuri": "http://riverview.com/20211231", "report": { "R1": { "firstAnchor": { "ancestors": [ "div", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "document", "isDefault": "true", "longName": "000100 - Document - Document and Entity Information", "role": "http://riverview.com/role/DocumentAndEntityInformation", "shortName": "Document and Entity Information", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "dei:DocumentType", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R10": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "rvac:InitialPublicOfferingTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060300 - Disclosure - INITIAL PUBLIC OFFERING", "role": "http://riverview.com/role/InitialPublicOffering", "shortName": "INITIAL PUBLIC OFFERING", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "rvac:InitialPublicOfferingTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R11": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "rvac:PrivatePlacementTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060400 - Disclosure - PRIVATE PLACEMENT", "role": "http://riverview.com/role/PrivatePlacement", "shortName": "PRIVATE PLACEMENT", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "rvac:PrivatePlacementTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R12": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060500 - Disclosure - RELATED PARTY TRANSACTIONS", "role": "http://riverview.com/role/RelatedPartyTransactions", "shortName": "RELATED PARTY TRANSACTIONS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R13": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060600 - Disclosure - COMMITMENTS", "role": "http://riverview.com/role/Commitments", "shortName": "COMMITMENTS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R14": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DerivativesAndFairValueTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060700 - Disclosure - WARRANT LIABILITIES", "role": "http://riverview.com/role/WarrantLiabilities", "shortName": "WARRANT LIABILITIES", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:DerivativesAndFairValueTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R15": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060800 - Disclosure - STOCKHOLDERS' EQUITY", "role": "http://riverview.com/role/StockholdersEquity", "shortName": "STOCKHOLDERS' EQUITY", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R16": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060900 - Disclosure - INCOME TAX", "role": "http://riverview.com/role/IncomeTax", "shortName": "INCOME TAX", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:IncomeTaxDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R17": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "061000 - Disclosure - FAIR VALUE MEASUREMENTS", "role": "http://riverview.com/role/FairValueMeasurements", "shortName": "FAIR VALUE MEASUREMENTS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:FairValueDisclosuresTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R18": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SubsequentEventsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "061100 - Disclosure - SUBSEQUENT EVENTS", "role": "http://riverview.com/role/SubsequentEvents", "shortName": "SUBSEQUENT EVENTS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:SubsequentEventsTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R19": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "070200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)", "subGroupType": "policies", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfAccountingPolicyPolicyTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R2": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:Cash", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "010000 - Statement - BALANCE SHEET", "role": "http://riverview.com/role/BalanceSheet", "shortName": "BALANCE SHEET", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "lang": null, "name": "us-gaap:PrepaidExpenseCurrent", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R20": { "firstAnchor": { "ancestors": [ "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:TemporaryEquityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "080200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesTables", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:TemporaryEquityTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R21": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "080900 - Disclosure - INCOME TAX (Tables)", "role": "http://riverview.com/role/IncomeTaxTables", "shortName": "INCOME TAX (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R22": { "firstAnchor": { "ancestors": [ "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "081000 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)", "role": "http://riverview.com/role/FairValueMeasurementsTables", "shortName": "FAIR VALUE MEASUREMENTS (Tables)", "subGroupType": "tables", "uniqueAnchor": { "ancestors": [ "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R23": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ProceedsFromIssuanceInitialPublicOffering", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090100 - Disclosure - DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details)", "role": "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "shortName": "DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810to20210810", "decimals": "0", "lang": null, "name": "us-gaap:PaymentsToAcquireMarketableSecurities", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R24": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:CashEquivalentsAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Cash and Cash Equivalents (Details)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Cash and Cash Equivalents (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:CashEquivalentsAtCarryingValue", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R25": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ProceedsFromIssuanceInitialPublicOffering", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Class A ordinary shares subject to possible redemption (Details)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Class A ordinary shares subject to possible redemption (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231_SubsidiarySaleOfStockAxis_IPOMember", "decimals": "0", "lang": null, "name": "us-gaap:TemporaryEquityAccretionToRedemptionValue", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R26": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_SubsidiarySaleOfStockAxis_IPOMember", "decimals": "0", "first": true, "lang": null, "name": "rvac:OfferingCosts", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090204 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Offering Costs (Details)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Offering Costs (Details)", "subGroupType": "details", "uniqueAnchor": null }, "R27": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:UnrecognizedTaxBenefits", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090206 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Income Taxes (Details)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Income Taxes (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:UnrecognizedTaxBenefits", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R28": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_StatementClassOfStockAxis_CommonClassAMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights", "reportCount": 1, "unique": true, "unitRef": "U002", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090208 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Net Loss Per Common Share (Details)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Net Loss Per Common Share (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_StatementClassOfStockAxis_CommonClassAMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights", "reportCount": 1, "unique": true, "unitRef": "U002", "xsiNil": "false" } }, "R29": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090210 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Derivative Financial Instruments (Details)", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Derivative Financial Instruments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "ix:continuation", "div", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231_SubsidiarySaleOfStockAxis_OverAllotmentOptionMember", "decimals": "0", "lang": null, "name": "us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R3": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "INF", "first": true, "lang": null, "name": "us-gaap:PreferredStockParOrStatedValuePerShare", "reportCount": 1, "unitRef": "U003", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "010100 - Statement - BALANCE SHEET (Parenthetical)", "role": "http://riverview.com/role/BalanceSheetParenthetical", "shortName": "BALANCE SHEET (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R30": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810to20210810_ClassOfWarrantOrRightAxis_PublicSharesMember_SubsidiarySaleOfStockAxis_IPOMember", "decimals": "0", "first": true, "lang": null, "name": "rvac:UnitsIssuedDuringPeriodSharesNewIssues", "reportCount": 1, "unitRef": "U002", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090300 - Disclosure - INITIAL PUBLIC OFFERING (Details)", "role": "http://riverview.com/role/InitialPublicOfferingDetails", "shortName": "INITIAL PUBLIC OFFERING (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810_ClassOfWarrantOrRightAxis_RedeemableWarrantsMember_SubsidiarySaleOfStockAxis_IPOMember", "decimals": "2", "lang": null, "name": "us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1", "reportCount": 1, "unique": true, "unitRef": "U003", "xsiNil": "false" } }, "R31": { "firstAnchor": { "ancestors": [ "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090400 - Disclosure - PRIVATE PLACEMENT (Details)", "role": "http://riverview.com/role/PrivatePlacementDetails", "shortName": "PRIVATE PLACEMENT (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810to20210810_ClassOfWarrantOrRightAxis_PrivatePlacementWarrantsMember_SubsidiarySaleOfStockAxis_PrivatePlacementMember", "decimals": "0", "lang": null, "name": "us-gaap:ProceedsFromIssuanceOfWarrants", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R32": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:ProceedsFromIssuanceOfCommonStock", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090500 - Disclosure - RELATED PARTY TRANSACTIONS, Founder Shares (Details)", "role": "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "shortName": "RELATED PARTY TRANSACTIONS, Founder Shares (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210407to20210407_RelatedPartyTransactionsByRelatedPartyAxis_InvestorMember", "decimals": "0", "lang": null, "name": "us-gaap:CommonStockDividendsShares", "reportCount": 1, "unique": true, "unitRef": "U002", "xsiNil": "false" } }, "R33": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231_RelatedPartyTransactionAxis_AdministrativeSupportAgreementMember_RelatedPartyTransactionsByRelatedPartyAxis_InvestorMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090502 - Disclosure - RELATED PARTY TRANSACTIONS, Administrative Support Agreement (Details)", "role": "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "shortName": "RELATED PARTY TRANSACTIONS, Administrative Support Agreement (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231_RelatedPartyTransactionAxis_AdministrativeSupportAgreementMember_RelatedPartyTransactionsByRelatedPartyAxis_InvestorMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R34": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:RepaymentsOfRelatedPartyDebt", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090504 - Disclosure - RELATED PARTY TRANSACTIONS, Promissory Note (Details)", "role": "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "shortName": "RELATED PARTY TRANSACTIONS, Promissory Note (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810_RelatedPartyTransactionAxis_PromissoryNoteMember_RelatedPartyTransactionsByRelatedPartyAxis_InvestorMember", "decimals": "0", "lang": null, "name": "us-gaap:NotesPayableRelatedPartiesClassifiedCurrent", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R35": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_RelatedPartyTransactionAxis_WorkingCapitalLoansMember_RelatedPartyTransactionsByRelatedPartyAxis_SponsorAffiliateOfSponsorOrCertainCompanyOfficersAndDirectorsMember", "decimals": "0", "first": true, "lang": null, "name": "rvac:ConvertibleDebtMaximumBorrowingCapacity", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090506 - Disclosure - RELATED PARTY TRANSACTIONS, Related Party Loans (Details)", "role": "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails", "shortName": "RELATED PARTY TRANSACTIONS, Related Party Loans (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_RelatedPartyTransactionAxis_WorkingCapitalLoansMember_RelatedPartyTransactionsByRelatedPartyAxis_SponsorAffiliateOfSponsorOrCertainCompanyOfficersAndDirectorsMember", "decimals": "0", "first": true, "lang": null, "name": "rvac:ConvertibleDebtMaximumBorrowingCapacity", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R36": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "INF", "first": true, "lang": null, "name": "rvac:NumberOfDemandsEligibleSecurityHolderCanMake", "reportCount": 1, "unique": true, "unitRef": "U006", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090600 - Disclosure - COMMITMENTS, Registration Rights and Warrant Amendments (Details)", "role": "http://riverview.com/role/CommitmentsRegistrationRightsAndWarrantAmendmentsDetails", "shortName": "COMMITMENTS, Registration Rights and Warrant Amendments (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "INF", "first": true, "lang": null, "name": "rvac:NumberOfDemandsEligibleSecurityHolderCanMake", "reportCount": 1, "unique": true, "unitRef": "U006", "xsiNil": "false" } }, "R37": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810to20210810", "decimals": "2", "first": true, "lang": null, "name": "rvac:UnderwritingDiscountFee", "reportCount": 1, "unique": true, "unitRef": "U003", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090602 - Disclosure - COMMITMENTS, Underwriting Agreement (Details)", "role": "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "shortName": "COMMITMENTS, Underwriting Agreement (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810to20210810", "decimals": "2", "first": true, "lang": null, "name": "rvac:UnderwritingDiscountFee", "reportCount": 1, "unique": true, "unitRef": "U003", "xsiNil": "false" } }, "R38": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "rvac:PeriodToExerciseWarrantsAfterBusinessCombination", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090700 - Disclosure - WARRANT LIABILITIES (Details)", "role": "http://riverview.com/role/WarrantLiabilitiesDetails", "shortName": "WARRANT LIABILITIES (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "rvac:PeriodToExerciseWarrantsAfterBusinessCombination", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R39": { "firstAnchor": { "ancestors": [ "span", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:PreferredStockSharesAuthorized", "reportCount": 1, "unitRef": "U002", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090800 - Disclosure - STOCKHOLDERS' EQUITY (Details)", "role": "http://riverview.com/role/StockholdersEquityDetails", "shortName": "STOCKHOLDERS' EQUITY (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "INF", "lang": null, "name": "rvac:StockConversionRatio", "reportCount": 1, "unique": true, "unitRef": "U005", "xsiNil": "false" } }, "R4": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:OperatingExpenses", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "020000 - Statement - STATEMENT OF OPERATIONS", "role": "http://riverview.com/role/StatementOfOperations", "shortName": "STATEMENT OF OPERATIONS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:OperatingExpenses", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R40": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:DeferredTaxAssetsOperatingLossCarryforwards", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "090900 - Disclosure - INCOME TAX (Details)", "role": "http://riverview.com/role/IncomeTaxDetails", "shortName": "INCOME TAX (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:DeferredTaxAssetsOperatingLossCarryforwards", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R41": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_FairValueByMeasurementFrequencyAxis_FairValueMeasurementsRecurringMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:InvestmentsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "091000 - Disclosure - FAIR VALUE MEASUREMENTS, Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)", "role": "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "shortName": "FAIR VALUE MEASUREMENTS, Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231_FairValueByFairValueHierarchyLevelAxis_FairValueInputsLevel1Member_FairValueByMeasurementFrequencyAxis_FairValueMeasurementsRecurringMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:InvestmentsFairValueDisclosure", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R42": { "firstAnchor": { "ancestors": [ "div", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:WarrantsAndRightsOutstandingTerm", "reportCount": 1, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "091002 - Disclosure - FAIR VALUE MEASUREMENTS, Level 3 Fair Value Measurement (Details)", "role": "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails", "shortName": "FAIR VALUE MEASUREMENTS, Level 3 Fair Value Measurement (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210810_ClassOfWarrantOrRightAxis_PublicAndPrivatePlacementWarrantsMember", "decimals": null, "lang": "en-US", "name": "us-gaap:WarrantsAndRightsOutstandingTerm", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R43": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210203_FairValueByLiabilityClassAxis_DerivativeFinancialInstrumentsLiabilitiesMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "091004 - Disclosure - FAIR VALUE MEASUREMENTS, Changes in Fair Value of Level 3 Warrant Liabilities (Details)", "role": "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails", "shortName": "FAIR VALUE MEASUREMENTS, Changes in Fair Value of Level 3 Warrant Liabilities (Details)", "subGroupType": "details", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "ix:continuation", "ix:continuation", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210203_FairValueByLiabilityClassAxis_DerivativeFinancialInstrumentsLiabilitiesMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R5": { "firstAnchor": { "ancestors": [ "link:footnote", "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231_StatementClassOfStockAxis_CommonClassBMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationForfeited", "reportCount": 1, "unitRef": "U002", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "020100 - Statement - STATEMENT OF OPERATIONS (Parenthetical)", "role": "http://riverview.com/role/StatementOfOperationsParenthetical", "shortName": "STATEMENT OF OPERATIONS (Parenthetical)", "subGroupType": "parenthetical", "uniqueAnchor": null }, "R6": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210203_StatementClassOfStockAxis_CommonClassAMember_StatementEquityComponentsAxis_CommonStockMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "030000 - Statement - STATEMENT OF CHANGES IN SHAREHOLDERS' DEFICIT", "role": "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "shortName": "STATEMENT OF CHANGES IN SHAREHOLDERS' DEFICIT", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210203_StatementClassOfStockAxis_CommonClassAMember_StatementEquityComponentsAxis_CommonStockMember", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:StockholdersEquity", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R7": { "firstAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "first": true, "lang": null, "name": "us-gaap:NetIncomeLoss", "reportCount": 1, "unitRef": "U001", "xsiNil": "false" }, "groupType": "statement", "isDefault": "false", "longName": "040000 - Statement - STATEMENT OF CASH FLOWS", "role": "http://riverview.com/role/StatementOfCashFlows", "shortName": "STATEMENT OF CASH FLOWS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "td", "tr", "table", "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210204to20211231", "decimals": "0", "lang": null, "name": "us-gaap:FairValueAdjustmentOfWarrants", "reportCount": 1, "unique": true, "unitRef": "U001", "xsiNil": "false" } }, "R8": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060100 - Disclosure - DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS", "role": "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperations", "shortName": "DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } }, "R9": { "firstAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" }, "groupType": "disclosure", "isDefault": "false", "longName": "060200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES", "role": "http://riverview.com/role/SummaryOfSignificantAccountingPolicies", "shortName": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES", "subGroupType": "", "uniqueAnchor": { "ancestors": [ "div", "div", "div", "body", "html" ], "baseRef": "brhc10035299_10k.htm", "contextRef": "c20210101to20211231", "decimals": null, "first": true, "lang": "en-US", "name": "us-gaap:BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "reportCount": 1, "unique": true, "unitRef": null, "xsiNil": "false" } } }, "segmentCount": 36, "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" } } }, "localname": "AmendmentFlag", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_AuditorFirmId": { "auth_ref": [ "r342", "r343", "r344" ], "lang": { "en-us": { "role": { "documentation": "PCAOB issued Audit Firm Identifier", "label": "Auditor Firm ID" } } }, "localname": "AuditorFirmId", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "nonemptySequenceNumberItemType" }, "dei_AuditorLocation": { "auth_ref": [ "r342", "r343", "r344" ], "lang": { "en-us": { "role": { "label": "Auditor Location" } } }, "localname": "AuditorLocation", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "internationalNameItemType" }, "dei_AuditorName": { "auth_ref": [ "r342", "r343", "r344" ], "lang": { "en-us": { "role": { "label": "Auditor Name" } } }, "localname": "AuditorName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "internationalNameItemType" }, "dei_CityAreaCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Area code of city", "label": "City Area Code" } } }, "localname": "CityAreaCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_CoverAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Cover page.", "label": "Cover [Abstract]" } } }, "localname": "CoverAbstract", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "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" } } }, "localname": "CurrentFiscalYearEndDate", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "gMonthDayItemType" }, "dei_DocumentAnnualReport": { "auth_ref": [ "r342", "r343", "r344" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as an annual report.", "label": "Document Annual Report" } } }, "localname": "DocumentAnnualReport", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_DocumentFiscalPeriodFocus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.", "label": "Document Fiscal Period Focus" } } }, "localname": "DocumentFiscalPeriodFocus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "fiscalPeriodItemType" }, "dei_DocumentFiscalYearFocus": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "This is focus fiscal year of the document report in YYYY 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" } } }, "localname": "DocumentFiscalYearFocus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "gYearItemType" }, "dei_DocumentPeriodEndDate": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.", "label": "Document Period End Date" } } }, "localname": "DocumentPeriodEndDate", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "dateItemType" }, "dei_DocumentTransitionReport": { "auth_ref": [ "r345" ], "lang": { "en-us": { "role": { "documentation": "Boolean flag that is true only for a form used as a transition report.", "label": "Document Transition Report" } } }, "localname": "DocumentTransitionReport", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "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" } } }, "localname": "DocumentType", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "submissionTypeItemType" }, "dei_EntityAddressAddressLine1": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Address Line 1 such as Attn, Building Name, Street Name", "label": "Entity Address, Address Line One" } } }, "localname": "EntityAddressAddressLine1", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressAddressLine2": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Address Line 2 such as Street or Suite number", "label": "Entity Address, Address Line Two" } } }, "localname": "EntityAddressAddressLine2", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressCityOrTown": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the City or Town", "label": "Entity Address, City or Town" } } }, "localname": "EntityAddressCityOrTown", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressPostalZipCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Code for the postal or zip code", "label": "Entity Address, Postal Zip Code" } } }, "localname": "EntityAddressPostalZipCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityAddressStateOrProvince": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the state or province.", "label": "Entity Address, State or Province" } } }, "localname": "EntityAddressStateOrProvince", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "stateOrProvinceItemType" }, "dei_EntityCentralIndexKey": { "auth_ref": [ "r340" ], "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" } } }, "localname": "EntityCentralIndexKey", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "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" } } }, "localname": "EntityCommonStockSharesOutstanding", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "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" } } }, "localname": "EntityCurrentReportingStatus", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityEmergingGrowthCompany": { "auth_ref": [ "r340" ], "lang": { "en-us": { "role": { "documentation": "Indicate if registrant meets the emerging growth company criteria.", "label": "Entity Emerging Growth Company" } } }, "localname": "EntityEmergingGrowthCompany", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntityExTransitionPeriod": { "auth_ref": [ "r349" ], "lang": { "en-us": { "role": { "documentation": "Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.", "label": "Entity Ex Transition Period" } } }, "localname": "EntityExTransitionPeriod", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "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" } } }, "localname": "EntityFileNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "fileNumberItemType" }, "dei_EntityFilerCategory": { "auth_ref": [ "r340" ], "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" } } }, "localname": "EntityFilerCategory", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "filerCategoryItemType" }, "dei_EntityIncorporationStateCountryCode": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Two-character EDGAR code representing the state or country of incorporation.", "label": "Entity Incorporation, State or Country Code" } } }, "localname": "EntityIncorporationStateCountryCode", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "edgarStateCountryItemType" }, "dei_EntityInteractiveDataCurrent": { "auth_ref": [ "r347" ], "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" } } }, "localname": "EntityInteractiveDataCurrent", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityListingsLineItems": { "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": "Entity Listings [Line Items]" } } }, "localname": "EntityListingsLineItems", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "stringItemType" }, "dei_EntityListingsTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Container for exchange listing information for an entity", "label": "Entity Listings [Table]" } } }, "localname": "EntityListingsTable", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "stringItemType" }, "dei_EntityPublicFloat": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.", "label": "Entity Public Float" } } }, "localname": "EntityPublicFloat", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "monetaryItemType" }, "dei_EntityRegistrantName": { "auth_ref": [ "r340" ], "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" } } }, "localname": "EntityRegistrantName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_EntityShellCompany": { "auth_ref": [ "r340" ], "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" } } }, "localname": "EntityShellCompany", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntitySmallBusiness": { "auth_ref": [ "r340" ], "lang": { "en-us": { "role": { "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).", "label": "Entity Small Business" } } }, "localname": "EntitySmallBusiness", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_EntityTaxIdentificationNumber": { "auth_ref": [ "r340" ], "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" } } }, "localname": "EntityTaxIdentificationNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "employerIdItemType" }, "dei_EntityVoluntaryFilers": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.", "label": "Entity Voluntary Filers" } } }, "localname": "EntityVoluntaryFilers", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_EntityWellKnownSeasonedIssuer": { "auth_ref": [ "r348" ], "lang": { "en-us": { "role": { "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.", "label": "Entity Well-known Seasoned Issuer" } } }, "localname": "EntityWellKnownSeasonedIssuer", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "yesNoItemType" }, "dei_IcfrAuditorAttestationFlag": { "auth_ref": [ "r342", "r343", "r344" ], "lang": { "en-us": { "role": { "label": "ICFR Auditor Attestation Flag" } } }, "localname": "IcfrAuditorAttestationFlag", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "booleanItemType" }, "dei_LocalPhoneNumber": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Local phone number for entity.", "label": "Local Phone Number" } } }, "localname": "LocalPhoneNumber", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "normalizedStringItemType" }, "dei_Security12bTitle": { "auth_ref": [ "r339" ], "lang": { "en-us": { "role": { "documentation": "Title of a 12(b) registered security.", "label": "Title of 12(b) Security" } } }, "localname": "Security12bTitle", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "securityTitleItemType" }, "dei_SecurityExchangeName": { "auth_ref": [ "r341" ], "lang": { "en-us": { "role": { "documentation": "Name of the Exchange on which a security is registered.", "label": "Security Exchange Name" } } }, "localname": "SecurityExchangeName", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "edgarExchangeCodeItemType" }, "dei_TradingSymbol": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Trading symbol of an instrument as listed on an exchange.", "label": "Trading Symbol" } } }, "localname": "TradingSymbol", "nsuri": "http://xbrl.sec.gov/dei/2021q4", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "tradingSymbolItemType" }, "rvac_AdditionalOfferingMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Second or additional offering of stock to the public.", "label": "Additional Offering [Member]", "terseLabel": "Additional Issue of Ordinary Shares or Equity-Linked Securities [Member]" } } }, "localname": "AdditionalOfferingMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "rvac_AdditionalUnitsThatCanBePurchasedToCoverOverAllotments": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of additional Units that can be purchased by the underwriters to cover over-allotments.", "label": "Additional Units that can be Purchased to Cover Over-allotments", "terseLabel": "Additional Units that can be purchased to cover over-allotments (in shares)" } } }, "localname": "AdditionalUnitsThatCanBePurchasedToCoverOverAllotments", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails" ], "xbrltype": "sharesItemType" }, "rvac_AdministrativeSupportAgreementAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Administrative Support Agreement [Abstract]", "terseLabel": "Administrative Support Agreement [Abstract]" } } }, "localname": "AdministrativeSupportAgreementAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails" ], "xbrltype": "stringItemType" }, "rvac_AdministrativeSupportAgreementMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "An agreement whereby, on the effective date of the registration statement on Form S-1 related to the Initial Public Offering through the earlier of consummation of the initial Business Combination and the Company's liquidation, the Company will pay a monthly fee for office space, utilities and secretarial and administrative support.", "label": "Administrative Support Agreement [Member]", "terseLabel": "Administrative Services Agreement [Member]" } } }, "localname": "AdministrativeSupportAgreementMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails" ], "xbrltype": "domainItemType" }, "rvac_AggregateGrossProceedsFromIssuanceAsPercentageOfTotalEquityProceeds": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Aggregate gross proceeds from issuance of additional shares of Class A common stock or equity-linked securities for capital raising purposes in connection with the closing of the initial Business Combination as a percentage of total equity proceeds.", "label": "Aggregate Gross Proceeds from Issuance as Percentage of Total Equity Proceeds", "terseLabel": "Aggregate gross proceeds from issuance as a percentage of total equity proceeds" } } }, "localname": "AggregateGrossProceedsFromIssuanceAsPercentageOfTotalEquityProceeds", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "percentItemType" }, "rvac_AnchorInvestorsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Qualified institutional buyers or institutional investors which are not affiliated with any member of management.", "label": "Anchor Investors [Member]" } } }, "localname": "AnchorInvestorsMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "domainItemType" }, "rvac_CashDepositedInTrustAccountPerUnit": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Per-share amount of net proceeds deposited in the Trust Account upon closing of the Initial Public Offerings and Private Placement.", "label": "Cash deposited in Trust Account per Unit", "terseLabel": "Cash deposited in Trust Account per Unit (in dollars per share)" } } }, "localname": "CashDepositedInTrustAccountPerUnit", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "perShareItemType" }, "rvac_CashPaidInExcessOfFairValueOfWarrantsChargedToStockholdersEquity": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount of cash paid in excess of fair value of warrants charged to stockholders' equity.", "label": "Cash Paid in Excess of Fair Value of Warrants Charged to Stockholders Equity", "terseLabel": "Cash paid in excess of fair vlaue of private placement warrants charged to stockholders equity" } } }, "localname": "CashPaidInExcessOfFairValueOfWarrantsChargedToStockholdersEquity", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/PrivatePlacementDetails" ], "xbrltype": "monetaryItemType" }, "rvac_ClassAOrdinarySharesSubjectToPossibleRedemptionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Class A Ordinary Shares Subject To Possible Redemption [Abstract]", "terseLabel": "Class A Ordinary Shares Subject To Possible Redemption [Abstract]" } } }, "localname": "ClassAOrdinarySharesSubjectToPossibleRedemptionAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "stringItemType" }, "rvac_ClassOfWarrantOrRightIssued": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of warrants or rights issued during the period.", "label": "Class of Warrant or Right, Issued", "terseLabel": "Warrants issued (in shares)" } } }, "localname": "ClassOfWarrantOrRightIssued", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/PrivatePlacementDetails" ], "xbrltype": "sharesItemType" }, "rvac_ClassOfWarrantOrRightRedemptionPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period of time in which warrants may be redeemed, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Class of Warrant or Right Redemption Period", "terseLabel": "Redemption period" } } }, "localname": "ClassOfWarrantOrRightRedemptionPeriod", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_ClassOfWarrantOrRightRedemptionPrice": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Redemption price per share or per unit of warrants or rights outstanding.", "label": "Class of Warrant or Right, Redemption Price", "terseLabel": "Warrant redemption price (in dollars per share)" } } }, "localname": "ClassOfWarrantOrRightRedemptionPrice", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "perShareItemType" }, "rvac_ClassOfWarrantOrRightThresholdTriggerPriceForRedemption": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Threshold trigger price per share or per unit of warrants or rights outstanding for redemption of warrants.", "label": "Class of Warrant or Right, Threshold Trigger Price for Redemption", "terseLabel": "Threshold trigger price for redemption of warrants (in dollars per share)" } } }, "localname": "ClassOfWarrantOrRightThresholdTriggerPriceForRedemption", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "perShareItemType" }, "rvac_CommonStockSharesSubjectToForfeiture": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of common stock shares subject to forfeiture in the event the over-allotment option was not exercised in full by the underwriters.", "label": "Common Stock, Shares, Subject to Forfeiture", "terseLabel": "Number of shares subject to forfeiture (in shares)" } } }, "localname": "CommonStockSharesSubjectToForfeiture", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "sharesItemType" }, "rvac_CommonStockVotesPerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of votes each holder is entitled to vote per share.", "label": "Common Stock, Votes Per Share", "terseLabel": "Number of votes per share" } } }, "localname": "CommonStockVotesPerShare", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "integerItemType" }, "rvac_ConvertibleDebtMaximumBorrowingCapacity": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Maximum borrowing capacity under the Working Capital Loans on the amount that could be borrowed for debt identified as being convertible into another form of financial instrument (typically the entity's common stock).", "label": "Convertible Debt, Maximum Borrowing Capacity", "terseLabel": "Loans that can be converted into Warrants at lenders' discretion" } } }, "localname": "ConvertibleDebtMaximumBorrowingCapacity", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "monetaryItemType" }, "rvac_DeferredTaxAssetsOrganizationalOrStartupCosts": { "auth_ref": [], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from organizational or startup costs.", "label": "Deferred Tax Assets, Organizational or Startup Costs", "terseLabel": "Startup/Organization Expenses" } } }, "localname": "DeferredTaxAssetsOrganizationalOrStartupCosts", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "rvac_DeferredTaxLiabilitiesUnrealizedGainsOnMarketableSecurities": { "auth_ref": [], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 0.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on marketable securities.", "label": "Deferred Tax Liabilities, Unrealized Gains on Marketable Securities", "negatedLabel": "Unrealized gain/loss - Trust" } } }, "localname": "DeferredTaxLiabilitiesUnrealizedGainsOnMarketableSecurities", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "rvac_DeferredUnderwritingCommissions": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of outstanding underwriting commissions payable initially due after one year or beyond the operating cycle if longer, excluding current portion.", "label": "Deferred Underwriting Commissions", "terseLabel": "Deferred underwriting commissions" } } }, "localname": "DeferredUnderwritingCommissions", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails" ], "xbrltype": "monetaryItemType" }, "rvac_DeferredUnderwritingFeeChargedToAdditionalPaidInCapital": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of deferred underwriting fee charged to additional paid in capital from noncash transactions.", "label": "Deferred Underwriting Fee Charged To Additional Paid In Capital", "terseLabel": "Deferred underwriting fee payable" } } }, "localname": "DeferredUnderwritingFeeChargedToAdditionalPaidInCapital", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "rvac_DeferredUnderwritingFeePayableNonCurrent": { "auth_ref": [], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 2.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of outstanding underwriting fee payable initially due after one year or beyond the operating cycle if longer, excluding current portion.", "label": "Deferred Underwriting Fee Payable Non Current", "terseLabel": "Deferred underwriting fee payable" } } }, "localname": "DeferredUnderwritingFeePayableNonCurrent", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "rvac_EffectiveIncomeTaxRateReconciliationChangesInFairValueOfWarrantsPercent": { "auth_ref": [], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 4.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in fair value of warrants.", "label": "Effective Income Tax Rate Reconciliation, Changes in Fair Value of Warrants, Percent", "verboseLabel": "Change in fair value of warrants" } } }, "localname": "EffectiveIncomeTaxRateReconciliationChangesInFairValueOfWarrantsPercent", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "rvac_EffectiveIncomeTaxRateReconciliationChangesInOverAllotmentLiabilityPercent": { "auth_ref": [], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 3.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in fair value of over-allotment liability.", "label": "Effective Income Tax Rate Reconciliation, Changes in over-allotment liability, Percent", "terseLabel": "Change in fair value of over-allotment liability" } } }, "localname": "EffectiveIncomeTaxRateReconciliationChangesInOverAllotmentLiabilityPercent", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "rvac_EffectiveIncomeTaxRateReconciliationTransactionCostsAllocatedToWarrantsPercent": { "auth_ref": [], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 2.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to transaction costs allocated to warrants.", "label": "Effective Income Tax Rate Reconciliation, Transaction Costs Allocated to Warrants, Percent", "terseLabel": "Transaction costs" } } }, "localname": "EffectiveIncomeTaxRateReconciliationTransactionCostsAllocatedToWarrantsPercent", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "rvac_FairMarketValueAsPercentageOfNetAssetsHeldInTrustAccountIncludedInInitialBusinessCombination": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Fair market value as a percentage of the net assets held in the Trust Account (excluding the deferred underwriting commissions and taxes payable on the income earned on the Trust Account) at the time of the agreement to enter into the initial Business Combination.", "label": "Fair market value as percentage of net assets held in Trust Account included in initial Business Combination", "terseLabel": "Percentage of fair market value held in Trust Account" } } }, "localname": "FairMarketValueAsPercentageOfNetAssetsHeldInTrustAccountIncludedInInitialBusinessCombination", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "percentItemType" }, "rvac_ForfeitureOfFoundersShares": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The value of common shares issued to founder forfeited in noncash investing or financing activities.", "label": "Forfeiture of Founders Shares", "negatedLabel": "Forfeiture of Founders Shares" } } }, "localname": "ForfeitureOfFoundersShares", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "rvac_FounderSharesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Founder Shares [Abstract]", "terseLabel": "Founder Shares [Abstract]" } } }, "localname": "FounderSharesAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "stringItemType" }, "rvac_HoldingPeriodForTransferAssignmentOrSaleOfFounderShares": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period of time after the completion of initial Business Combination in which initial shareholders are not permitted to transfer, assign or sell any of their held Founder Shares, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Holding Period for Transfer, Assignment or Sale of Founder Shares", "terseLabel": "Holding period for transfer, assignment or sale of Founder Shares" } } }, "localname": "HoldingPeriodForTransferAssignmentOrSaleOfFounderShares", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "durationItemType" }, "rvac_INITIALPUBLICOFFERINGAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "INITIAL PUBLIC OFFERING [Abstract]" } } }, "localname": "INITIALPUBLICOFFERINGAbstract", "nsuri": "http://riverview.com/20211231", "xbrltype": "stringItemType" }, "rvac_InitialPublicOfferingOfUnitsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Initial Public Offering of Units [Abstract]", "terseLabel": "Initial Public Offering [Abstract]" } } }, "localname": "InitialPublicOfferingOfUnitsAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "stringItemType" }, "rvac_InitialPublicOfferingTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for the initial public offering of the Company's units.", "label": "Initial Public Offering [Text Block]", "terseLabel": "INITIAL PUBLIC OFFERING" } } }, "localname": "InitialPublicOfferingTextBlock", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/InitialPublicOffering" ], "xbrltype": "textBlockItemType" }, "rvac_InitialValueOfDerivativeLiabilities": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The initial value of derivative warrant liabilities.", "label": "Initial Value of Derivative Liabilities", "terseLabel": "Initial value of warrant Liabilities" } } }, "localname": "InitialValueOfDerivativeLiabilities", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "rvac_InterestOnTrustAccountToBeHeldToPayDissolutionExpenses": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Interest received on the Trust Account that can be used to pay dissolution expenses if a Business Combination is not completed with the Combination Period.", "label": "Interest on Trust Account to be held to pay dissolution expenses", "terseLabel": "Interest from Trust Account that can be held to pay dissolution expenses" } } }, "localname": "InterestOnTrustAccountToBeHeldToPayDissolutionExpenses", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_MinimumPercentageOfOutstandingWarrantHoldersRequiredToApproveAmendment": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Minimum percentage for outstanding share holders required to amend the term of public warrants.", "label": "Minimum Percentage of Outstanding Warrant Holders Required to Approve Amendment", "terseLabel": "Minimum percentage of outstanding warrant holders required to approve amendment" } } }, "localname": "MinimumPercentageOfOutstandingWarrantHoldersRequiredToApproveAmendment", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsRegistrationRightsAndWarrantAmendmentsDetails" ], "xbrltype": "percentItemType" }, "rvac_NetTangibleAssetThresholdForRedeemingPublicShares": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Net tangible asset threshold for redeeming Public Shares.", "label": "Net tangible asset threshold for redeeming Public Shares", "terseLabel": "Net tangible asset threshold for redeeming Public Shares" } } }, "localname": "NetTangibleAssetThresholdForRedeemingPublicShares", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_NoticePeriodToRedeemWarrants": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period to provide written notice to redeem warrants, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Notice Period to Redeem Warrants", "terseLabel": "Notice period to redeem warrants" } } }, "localname": "NoticePeriodToRedeemWarrants", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_NumberOfDemandsEligibleSecurityHolderCanMake": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Represents the number of demands eligible security holder can make.", "label": "Number Of Demands Eligible Security Holder Can Make", "terseLabel": "Number of demands entitled to holders" } } }, "localname": "NumberOfDemandsEligibleSecurityHolderCanMake", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsRegistrationRightsAndWarrantAmendmentsDetails" ], "xbrltype": "integerItemType" }, "rvac_NumberOfOperatingBusinessesIncludedInInitialBusinessCombination": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of operating businesses that must be included in initial Business Combination.", "label": "Number of operating businesses included in initial Business Combination" } } }, "localname": "NumberOfOperatingBusinessesIncludedInInitialBusinessCombination", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "integerItemType" }, "rvac_OfferingCostExpensedToStatementOfOperations": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of offering cost expenses to statement of operation.", "label": "Offering Cost Expensed To Statement Of Operations", "terseLabel": "Offering cost expensed to statement of operations" } } }, "localname": "OfferingCostExpensedToStatementOfOperations", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_OfferingCosts": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Offering costs consisted of legal, accounting, underwriting fees and other costs incurred through the Initial Public Offering that were directly related to the Initial Public Offering.", "label": "Offering Costs", "negatedTerseLabel": "Class A ordinary shares issuance costs", "terseLabel": "Offering costs", "verboseLabel": "Transaction costs" } } }, "localname": "OfferingCosts", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_OptionForUnderwritersToPurchaseAdditionalUnitsTerm": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period of time from the date of the final prospectus relating to the Initial Public Offering for underwriters to purchase additional Units to cover over-allotments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Option for Underwriters to Purchase Additional Units, Term", "terseLabel": "Term of option for underwriters to purchase additional Units to cover over-allotments" } } }, "localname": "OptionForUnderwritersToPurchaseAdditionalUnitsTerm", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails" ], "xbrltype": "durationItemType" }, "rvac_OtherOfferingCosts": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of other costs incurred in connection with the offering of Units in Initial Public Offering and Private Placement of Warrants.", "label": "Other Offering Costs", "terseLabel": "Other offering cost" } } }, "localname": "OtherOfferingCosts", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_PRIVATEPLACEMENTAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "PRIVATE PLACEMENT [Abstract]" } } }, "localname": "PRIVATEPLACEMENTAbstract", "nsuri": "http://riverview.com/20211231", "xbrltype": "stringItemType" }, "rvac_PercentageMultiplier": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage multiplier applied to the higher of the Market Value and the Newly Issued Price.", "label": "Percentage Multiplier", "terseLabel": "Percentage multiplier" } } }, "localname": "PercentageMultiplier", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "percentItemType" }, "rvac_PercentageOfOutstandingVotingSecuritiesForPostTransactionCompanyToAcquireOrOwnInOrderToCompleteBusinessCombination": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of outstanding voting securities for the post-transaction company to acquire or own in order to complete a business combination of the target.", "label": "Percentage Of Outstanding Voting Securities For Post Transaction Company To Acquire Or Own In Order To Complete Business Combination", "terseLabel": "Percentage of outstanding voting securities for post-transaction company to acquire or own in order to complete business combination" } } }, "localname": "PercentageOfOutstandingVotingSecuritiesForPostTransactionCompanyToAcquireOrOwnInOrderToCompleteBusinessCombination", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "percentItemType" }, "rvac_PercentageOfPublicSharesThatCanBeRedeemedWithoutPriorConsent": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of Public Shares that can be redeemed without the prior consent of the Company.", "label": "Percentage of Public Shares that can be redeemed without prior consent", "terseLabel": "Percentage of Public Shares that can be redeemed without prior consent" } } }, "localname": "PercentageOfPublicSharesThatCanBeRedeemedWithoutPriorConsent", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "percentItemType" }, "rvac_PercentageOfPublicSharesThatWouldNotBeRedeemedIfBusinessCombinationIsNotCompletedWithinInitialCombinationPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of Public Shares that would not be redeemed if a Business Combination is not completed within the Initial Combination Period.", "label": "Percentage of Public Shares that would not be redeemed if Business Combination is not completed within Initial Combination Period", "terseLabel": "Percentage of Public Shares that would not be redeemed if Business Combination is not completed within Initial Combination Period" } } }, "localname": "PercentageOfPublicSharesThatWouldNotBeRedeemedIfBusinessCombinationIsNotCompletedWithinInitialCombinationPeriod", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "percentItemType" }, "rvac_PeriodAfterInitialBusinessCombination": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period after the initial Business Combination for the common stock price to exceed the threshold price per share, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Period after Initial Business Combination", "terseLabel": "Period after initial business combination" } } }, "localname": "PeriodAfterInitialBusinessCombination", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "durationItemType" }, "rvac_PeriodForRegistrationStatementToBecomeEffective": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period of time required to pass after the filing of a registration statement to become effective before warrant holders may be permitted to exercise warrants, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Period for Registration Statement to Become Effective", "terseLabel": "Period for registration statement to become effective" } } }, "localname": "PeriodForRegistrationStatementToBecomeEffective", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_PeriodToCompleteBusinessCombinationFromClosingOfInitialPublicOffering": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period of time from closing of Initial Public Offering to complete Business Combination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Period to complete Business Combination from closing of Initial Public Offering", "terseLabel": "Period to complete Business Combination from closing of Initial Public Offering" } } }, "localname": "PeriodToCompleteBusinessCombinationFromClosingOfInitialPublicOffering", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "durationItemType" }, "rvac_PeriodToExerciseWarrantsAfterBusinessCombination": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period after the completion of a business combination when warrants will become exercisable, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Period to Exercise Warrants After Business Combination", "terseLabel": "Period to exercise warrants after Business Combination" } } }, "localname": "PeriodToExerciseWarrantsAfterBusinessCombination", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_PeriodToExerciseWarrantsAfterClosingOfInitialPublicOffering": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period after the closing of the Initial Public Offering when warrants will become exercisable, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Period to Exercise Warrants After Closing of Initial Public Offering", "terseLabel": "Period to exercise warrants after closing of Initial Public Offering" } } }, "localname": "PeriodToExerciseWarrantsAfterClosingOfInitialPublicOffering", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_PeriodToFileRegistrationStatementAfterInitialBusinessCombination": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period following the closing of the initial Business Combination when the entity is required to file and have an effective registration statement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Period to File Registration Statement After Initial Business Combination", "terseLabel": "Period to file registration statement after initial Business Combination" } } }, "localname": "PeriodToFileRegistrationStatementAfterInitialBusinessCombination", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_PeriodToRedeemPublicSharesIfBusinessCombinationIsNotCompletedWithinInitialCombinationPeriod": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Period of time to redeem Public Shares if Business Combination is not completed within the Initial Combination Period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Period to redeem Public Shares if Business Combination is not completed within Initial Combination Period", "terseLabel": "Period to redeem Public Shares if Business Combination is not completed within Initial Combination Period" } } }, "localname": "PeriodToRedeemPublicSharesIfBusinessCombinationIsNotCompletedWithinInitialCombinationPeriod", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "durationItemType" }, "rvac_PrivatePlacementTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "The entire disclosure of sale of warrants in a private placement offering.", "label": "Private Placement [Text Block]", "terseLabel": "PRIVATE PLACEMENT" } } }, "localname": "PrivatePlacementTextBlock", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/PrivatePlacement" ], "xbrltype": "textBlockItemType" }, "rvac_PrivatePlacementWarrantMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Security that gives the holder the right to purchase one share of Class A common stock at a price of $11.50 per share.", "label": "Private Placement Warrant [Member]", "terseLabel": "Private Placement Warrants [Member]", "verboseLabel": "Private Placement [Member]" } } }, "localname": "PrivatePlacementWarrantMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "rvac_PrivatePlacementWarrantsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Private Placement Warrants [Abstract]", "terseLabel": "Private Placement [Abstract]" } } }, "localname": "PrivatePlacementWarrantsAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/PrivatePlacementDetails" ], "xbrltype": "stringItemType" }, "rvac_PrivatePlacementWarrantsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Private placement warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share", "label": "Private Placement Warrants [Member]", "terseLabel": "Private Placement Warrants [Member]", "verboseLabel": "Private Warrants [Member]" } } }, "localname": "PrivatePlacementWarrantsMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "rvac_PromissoryNoteMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "An unsecured promissory note that was non-interest bearing and payable on December 31,2021 or the completion of the Initial Public Offering.", "label": "Promissory Note [Member]", "terseLabel": "Promissory Note [Member]" } } }, "localname": "PromissoryNoteMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails" ], "xbrltype": "domainItemType" }, "rvac_PublicAndPrivatePlacementWarrantsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Public and private placement warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 per share.", "label": "Public and Private Placement Warrants [Member]", "terseLabel": "Public and Private Warrants [Member]" } } }, "localname": "PublicAndPrivatePlacementWarrantsMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "rvac_PublicSharesMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Units sold in a public offering, each consisting of one share of Class A common stock and one-half of one warrant.", "label": "Public Shares [Member]" } } }, "localname": "PublicSharesMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "domainItemType" }, "rvac_PublicWarrantMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Security that gives the holder the right to purchase one share of Class A common stock at an exercise price of $11.50.", "label": "Public Warrant [Member]", "terseLabel": "Public [Member]", "verboseLabel": "Public Warrants [Member]" } } }, "localname": "PublicWarrantMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "rvac_RedeemableOrdinarySharesAccretionToRedemptionValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value of accretion of redeemable ordinary shares to their redemption value during the period.", "label": "Redeemable Ordinary Shares Accretion To Redemption Value", "negatedLabel": "Accretion of Class A common stock to redemption amount" } } }, "localname": "RedeemableOrdinarySharesAccretionToRedemptionValue", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "monetaryItemType" }, "rvac_RedeemableWarrantsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Warrants issued in connection with the Initial Public Offering. Each whole warrant exercisable for one share of Class A ordinary share at an exercise price of $11.50 per share.", "label": "Redeemable Warrants [Member]", "terseLabel": "Public Warrants [Member]", "verboseLabel": "Redeemable Warrants [Member]" } } }, "localname": "RedeemableWarrantsMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "rvac_RegistrationAndShareholderRightsAgreementAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Registration and Shareholder Rights Agreement [Abstract]", "terseLabel": "Registration, Warrant Amendments and Shareholder Rights Agreement [Abstract]" } } }, "localname": "RegistrationAndShareholderRightsAgreementAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsRegistrationRightsAndWarrantAmendmentsDetails" ], "xbrltype": "stringItemType" }, "rvac_ShareUnitsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Units, each consisting of one share of Class A common stock and one-half of one redeemable warrant.", "label": "Share Units [Member]", "terseLabel": "Units [Member]" } } }, "localname": "ShareUnitsMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DocumentAndEntityInformation" ], "xbrltype": "domainItemType" }, "rvac_SponsorAffiliateOfSponsorOrCertainCompanyOfficersAndDirectorsMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "KKR Acquisition Sponsor I LLC (Sponsor), an affiliate of the Sponsor, or certain of the Company's officers and directors.", "label": "Sponsor, Affiliate of Sponsor, or Certain Company Officers and Directors [Member]", "terseLabel": "Sponsor, Affiliate of Sponsor, or Certain Company Officers and Directors [Member]" } } }, "localname": "SponsorAffiliateOfSponsorOrCertainCompanyOfficersAndDirectorsMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "domainItemType" }, "rvac_StockConversionAsConvertedPercentage": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Percentage of shares of Class A common stock issuable upon conversion of all shares of Class B common stock on an as-converted basis.", "label": "Stock Conversion, As-converted Percentage", "terseLabel": "As-converted percentage for Class A ordinary shares after conversion of Class B shares" } } }, "localname": "StockConversionAsConvertedPercentage", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "percentItemType" }, "rvac_StockConversionRatio": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Ratio applied to the conversion of stock, for example but not limited to, one share converted to two or two shares converted to one.", "label": "Stock Conversion Ratio", "terseLabel": "Stock conversion basis of Class B to Class A ordinary shares at time of initial business combination" } } }, "localname": "StockConversionRatio", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "pureItemType" }, "rvac_ThresholdConsecutiveTradingDays": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Threshold period of specified consecutive trading days that common stock price must exceed threshold price for specified number of trading days, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Threshold Consecutive Trading Days", "terseLabel": "Threshold consecutive trading days" } } }, "localname": "ThresholdConsecutiveTradingDays", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_ThresholdTradingDays": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Threshold number of specified trading days that common stock price must exceed threshold price within a specified consecutive trading period, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Threshold Trading Days", "terseLabel": "Threshold trading days" } } }, "localname": "ThresholdTradingDays", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_TradingDayPeriodToCalculateVolumeWeightedAverageTradingPrice": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Trading day period after Company consummates its initial Business Combination to calculate the volume weighted average trading price of shares, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.", "label": "Trading Day Period to Calculate Volume Weighted Average Trading Price", "terseLabel": "Trading day period to calculate volume weighted average trading price" } } }, "localname": "TradingDayPeriodToCalculateVolumeWeightedAverageTradingPrice", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "rvac_TransactionCostsAllocableToWarrantLiabilities": { "auth_ref": [], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://riverview.com/role/StatementOfOperations": { "order": 3.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of transaction costs incurred directly with the issuance of warrant liabilities.", "label": "Transaction Costs Allocable To Warrant Liabilities", "negatedLabel": "Transaction costs", "terseLabel": "Transaction costs" } } }, "localname": "TransactionCostsAllocableToWarrantLiabilities", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "rvac_UnderwritingAgreementAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Underwriting Agreement [Abstract]", "terseLabel": "Underwriting Agreement [Abstract]" } } }, "localname": "UnderwritingAgreementAbstract", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails" ], "xbrltype": "stringItemType" }, "rvac_UnderwritingDiscountFee": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Underwriting discount fee per unit paid to underwriters.", "label": "Underwriting Discount Fee", "terseLabel": "Underwriting discount (in dollars per share)" } } }, "localname": "UnderwritingDiscountFee", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails" ], "xbrltype": "perShareItemType" }, "rvac_UnderwritingFees": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of costs incurred for underwriting fees in connection with the offering of Units in Initial Public Offering and Private Placement of Warrants.", "label": "Underwriting Fees", "terseLabel": "Underwriting fees" } } }, "localname": "UnderwritingFees", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_UnderwritingFeesDeferred": { "auth_ref": [], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of costs incurred and deferred for underwriting fees in connection with the offering of Units in Initial Public Offering and Private Placement of Warrants.", "label": "Underwriting Fees Deferred", "terseLabel": "Deferred underwriting fees" } } }, "localname": "UnderwritingFeesDeferred", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "monetaryItemType" }, "rvac_UnitNumberOfSharesIncludedInUnit": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of shares of Common Stock included in each Unit.", "label": "Unit, Number of Shares Included in Unit", "terseLabel": "Number of securities called by each unit (in shares)" } } }, "localname": "UnitNumberOfSharesIncludedInUnit", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "sharesItemType" }, "rvac_UnitsIssuedDuringPeriodSharesNewIssues": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of new units issued during the period. Each unit consists of one share of Class A Ordinary share and one-half of one redeemable Warrant.", "label": "Units Issued During Period, Shares, New Issues", "terseLabel": "Units issued (in shares)" } } }, "localname": "UnitsIssuedDuringPeriodSharesNewIssues", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "sharesItemType" }, "rvac_WorkingCapitalLoansMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Working capital loans to fund working capital deficiencies or finance transaction costs in connection with a Business Combination.", "label": "Working Capital Loans [Member]" } } }, "localname": "WorkingCapitalLoansMember", "nsuri": "http://riverview.com/20211231", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "domainItemType" }, "srt_MaximumMember": { "auth_ref": [ "r142", "r154", "r188", "r189", "r290", "r291", "r292", "r293", "r294", "r295", "r296", "r325", "r326", "r337", "r338" ], "lang": { "en-us": { "role": { "label": "Maximum [Member]" } } }, "localname": "MaximumMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "srt_MinimumMember": { "auth_ref": [ "r142", "r154", "r188", "r189", "r290", "r291", "r292", "r293", "r294", "r295", "r296", "r325", "r326", "r337", "r338" ], "lang": { "en-us": { "role": { "label": "Minimum [Member]" } } }, "localname": "MinimumMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "srt_RangeAxis": { "auth_ref": [ "r142", "r154", "r178", "r188", "r189", "r290", "r291", "r292", "r293", "r294", "r295", "r296", "r325", "r326", "r337", "r338" ], "lang": { "en-us": { "role": { "label": "Statistical Measurement [Axis]" } } }, "localname": "RangeAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "srt_RangeMember": { "auth_ref": [ "r142", "r154", "r178", "r188", "r189", "r290", "r291", "r292", "r293", "r294", "r295", "r296", "r325", "r326", "r337", "r338" ], "lang": { "en-us": { "role": { "label": "Statistical Measurement [Domain]" } } }, "localname": "RangeMember", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "srt_TitleOfIndividualAxis": { "auth_ref": [ "r116", "r278" ], "lang": { "en-us": { "role": { "label": "Title of Individual [Axis]" } } }, "localname": "TitleOfIndividualAxis", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "stringItemType" }, "srt_TitleOfIndividualWithRelationshipToEntityDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Title of Individual [Domain]" } } }, "localname": "TitleOfIndividualWithRelationshipToEntityDomain", "nsuri": "http://fasb.org/srt/2021-01-31", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails" ], "xbrltype": "domainItemType" }, "us-gaap_AccountingPoliciesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]" } } }, "localname": "AccountingPoliciesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_AccruedLiabilitiesCurrent": { "auth_ref": [ "r24" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 0.0, "parentTag": "us-gaap_LiabilitiesCurrent", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Accrued Liabilities, Current", "terseLabel": "Accrued expenses" } } }, "localname": "AccruedLiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapital": { "auth_ref": [ "r13", "r195", "r284" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 3.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.", "label": "Additional Paid in Capital", "terseLabel": "Additional paid-in capital" } } }, "localname": "AdditionalPaidInCapital", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdditionalPaidInCapitalMember": { "auth_ref": [ "r66", "r67", "r68", "r192", "r193", "r194", "r244" ], "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]" } } }, "localname": "AdditionalPaidInCapitalMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "domainItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts": { "auth_ref": [ "r168", "r175" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.", "label": "Offering cost charged to shareholder equity" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued": { "auth_ref": [ "r140", "r168", "r175" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants.", "label": "Cash paid in excess of fair value of private placement warrants", "terseLabel": "Cash paid in excess of fair vlaue of private placement warrants charged to additional paid-in captial" } } }, "localname": "AdjustmentsToAdditionalPaidInCapitalWarrantIssued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Adjustments to reconcile net income to net cash used in operating activities:" } } }, "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_Assets": { "auth_ref": [ "r59", "r108", "r110", "r114", "r120", "r129", "r130", "r131", "r132", "r133", "r134", "r135", "r136", "r137", "r138", "r139", "r228", "r230", "r265", "r282", "r284", "r310", "r316" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets", "totalLabel": "Total Assets" } } }, "localname": "Assets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets [Abstract]", "terseLabel": "ASSETS" } } }, "localname": "AssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsCurrent": { "auth_ref": [ "r4", "r6", "r29", "r59", "r120", "r129", "r130", "r131", "r132", "r133", "r134", "r135", "r136", "r137", "r138", "r139", "r228", "r230", "r265", "r282", "r284" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 1.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.", "label": "Assets, Current", "totalLabel": "Total current assets" } } }, "localname": "AssetsCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_AssetsCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Current [Abstract]", "terseLabel": "Current Assets:" } } }, "localname": "AssetsCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsFairValueDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Assets, Fair Value Disclosure [Abstract]", "terseLabel": "Assets [Abstract]" } } }, "localname": "AssetsFairValueDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_AssetsHeldInTrustNoncurrent": { "auth_ref": [ "r56" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 2.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited.", "label": "Marketable securities held in Trust Account" } } }, "localname": "AssetsHeldInTrustNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "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 Presentation" } } }, "localname": "BasisOfAccountingPolicyPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock": { "auth_ref": [ "r65" ], "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": "SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" } } }, "localname": "BasisOfPresentationAndSignificantAccountingPoliciesTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_Cash": { "auth_ref": [ "r18", "r284", "r332", "r333" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 0.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.", "label": "Cash", "terseLabel": "Cash", "verboseLabel": "Cash not held in Trust Account available for working capital" } } }, "localname": "Cash", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash and Cash Equivalents [Abstract]" } } }, "localname": "CashAndCashEquivalentsAtCarryingValueAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CashAndCashEquivalentsPolicyTextBlock": { "auth_ref": [ "r8", "r54" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.", "label": "Cash and Cash Equivalents" } } }, "localname": "CashAndCashEquivalentsPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": { "auth_ref": [ "r48", "r53", "r55" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents", "periodEndLabel": "Cash - End of period", "periodStartLabel": "Cash - Beginning of period" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect": { "auth_ref": [ "r48", "r266" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.", "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect", "totalLabel": "Net Change in Cash" } } }, "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashEquivalentsAtCarryingValue": { "auth_ref": [ "r18" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.", "label": "Cash Equivalents, at Carrying Value", "terseLabel": "Cash equivalents" } } }, "localname": "CashEquivalentsAtCarryingValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Non-Cash investing and financing activities:" } } }, "localname": "CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_ClassOfStockDomain": { "auth_ref": [ "r57", "r59", "r81", "r82", "r83", "r86", "r89", "r95", "r96", "r97", "r120", "r129", "r133", "r134", "r135", "r138", "r139", "r152", "r153", "r157", "r161", "r265", "r346" ], "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]" } } }, "localname": "ClassOfStockDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/DocumentAndEntityInformation", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StatementOfOperationsParenthetical", "http://riverview.com/role/StockholdersEquityDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfStockLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Class of Stock [Line Items]" } } }, "localname": "ClassOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassOfWarrantOrRightAxis": { "auth_ref": [ "r176", "r190" ], "lang": { "en-us": { "role": { "documentation": "Information by type of warrant or right issued.", "label": "Class of Warrant or Right [Axis]" } } }, "localname": "ClassOfWarrantOrRightAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassOfWarrantOrRightDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Name of the class or type of warrant or right outstanding. Warrants and rights represent derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months.", "label": "Class of Warrant or Right [Domain]" } } }, "localname": "ClassOfWarrantOrRightDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails", "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1": { "auth_ref": [ "r169" ], "lang": { "en-us": { "role": { "documentation": "Exercise price per share or per unit of warrants or rights outstanding.", "label": "Warrants exercise price (In dollars per share)", "terseLabel": "Exercise price of warrant (in dollars per share)" } } }, "localname": "ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ClassOfWarrantOrRightLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Class of Warrant or Right [Line Items]" } } }, "localname": "ClassOfWarrantOrRightLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.", "label": "Number of securities called by each warrant (in shares)", "terseLabel": "Number of securities called by each warrant (in shares)" } } }, "localname": "ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights": { "auth_ref": [ "r169" ], "lang": { "en-us": { "role": { "documentation": "Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.", "label": "Warrants exercisable to purchase of aggregate class A common stock (in shares)" } } }, "localname": "ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ClassOfWarrantOrRightOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of warrants or rights outstanding.", "label": "Warrants outstanding (in shares)" } } }, "localname": "ClassOfWarrantOrRightOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_ClassOfWarrantOrRightTable": { "auth_ref": [ "r176", "r190" ], "lang": { "en-us": { "role": { "documentation": "Disclosure for warrants or rights issued, which includes the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.", "label": "Class of Warrant or Right [Table]" } } }, "localname": "ClassOfWarrantOrRightTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingencies": { "auth_ref": [ "r26", "r127", "r312", "r319" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 4.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "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" } } }, "localname": "CommitmentsAndContingencies", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "COMMITMENTS [Abstract]" } } }, "localname": "CommitmentsAndContingenciesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": { "auth_ref": [ "r124", "r125", "r126", "r128", "r336" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for commitments and contingencies.", "label": "Commitments and Contingencies Disclosure [Text Block]", "terseLabel": "COMMITMENTS" } } }, "localname": "CommitmentsAndContingenciesDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/Commitments" ], "xbrltype": "textBlockItemType" }, "us-gaap_CommonClassAMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Classification of common stock representing ownership interest in a corporation.", "label": "Class A Common Stock [Member]" } } }, "localname": "CommonClassAMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/DocumentAndEntityInformation", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StockholdersEquityDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonClassBMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Classification of common stock that has different rights than Common Class A, representing ownership interest in a corporation.", "label": "Class B Common Stock [Member]" } } }, "localname": "CommonClassBMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/DocumentAndEntityInformation", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StatementOfOperationsParenthetical", "http://riverview.com/role/StockholdersEquityDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockDividendsShares": { "auth_ref": [ "r168" ], "lang": { "en-us": { "role": { "documentation": "Number of shares of common stock issued as dividends during the period. Excludes stock splits.", "label": "Common stock dividends (in shares)" } } }, "localname": "CommonStockDividendsShares", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockMember": { "auth_ref": [ "r66", "r67", "r244" ], "lang": { "en-us": { "role": { "documentation": "Stock that is subordinate to all other stock of the issuer.", "label": "Common Stock [Member]" } } }, "localname": "CommonStockMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "domainItemType" }, "us-gaap_CommonStockParOrStatedValuePerShare": { "auth_ref": [ "r12" ], "lang": { "en-us": { "role": { "documentation": "Face amount or stated value per share of common stock.", "label": "Common stock, par value (in dollars per share)" } } }, "localname": "CommonStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_CommonStockSharesAuthorized": { "auth_ref": [ "r12" ], "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 (in shares)" } } }, "localname": "CommonStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesIssued": { "auth_ref": [ "r12" ], "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 (in shares)" } } }, "localname": "CommonStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockSharesOutstanding": { "auth_ref": [ "r12", "r168" ], "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 (in shares)" } } }, "localname": "CommonStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_CommonStockValue": { "auth_ref": [ "r12", "r284" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 2.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Common Stock, Value, Issued", "terseLabel": "Common stock" } } }, "localname": "CommonStockValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_ComponentsOfDeferredTaxAssetsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Deferred tax assets [Abstract]" } } }, "localname": "ComponentsOfDeferredTaxAssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ConcentrationRiskCreditRisk": { "auth_ref": [ "r100", "r315" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for credit risk.", "label": "Concentration of Credit Risk" } } }, "localname": "ConcentrationRiskCreditRisk", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_CurrentFederalTaxExpenseBenefit": { "auth_ref": [ "r60", "r214", "r221" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current" } } }, "localname": "CurrentFederalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_CurrentStateAndLocalTaxExpenseBenefit": { "auth_ref": [ "r60", "r214", "r221" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Current State and Local Tax Expense (Benefit)", "terseLabel": "Current" } } }, "localname": "CurrentStateAndLocalTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DebtInstrumentConvertibleConversionPrice1": { "auth_ref": [ "r141", "r144" ], "lang": { "en-us": { "role": { "documentation": "The price per share of the conversion feature embedded in the debt instrument.", "label": "Debt Instrument, Convertible, Conversion Price", "terseLabel": "Conversion price (in dollars per share)" } } }, "localname": "DebtInstrumentConvertibleConversionPrice1", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_DeferredChargesPolicyTextBlock": { "auth_ref": [ "r19" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for deferral and amortization of significant deferred charges.", "label": "Deferred Charges, Policy [Policy Text Block]", "terseLabel": "Offering Costs" } } }, "localname": "DeferredChargesPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_DeferredCostsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Offering Costs [Abstract]" } } }, "localname": "DeferredCostsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_DeferredFederalIncomeTaxExpenseBenefit": { "auth_ref": [ "r60", "r215", "r221" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred" } } }, "localname": "DeferredFederalIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit": { "auth_ref": [ "r60", "r215", "r221" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.", "label": "Deferred State and Local Income Tax Expense (Benefit)", "terseLabel": "Deferred" } } }, "localname": "DeferredStateAndLocalIncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsGross": { "auth_ref": [ "r206" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 1.0, "parentTag": "us-gaap_DeferredTaxAssetsNet", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.", "label": "Deferred Tax Assets, Gross", "totalLabel": "Total deferred tax assets" } } }, "localname": "DeferredTaxAssetsGross", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsNet": { "auth_ref": [ "r208" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.", "label": "Deferred Tax Assets, Net of Valuation Allowance", "totalLabel": "Deferred tax assets, net" } } }, "localname": "DeferredTaxAssetsNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": { "auth_ref": [ "r212", "r213" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 2.0, "parentTag": "us-gaap_DeferredTaxAssetsGross", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.", "label": "Net operating loss carryforward" } } }, "localname": "DeferredTaxAssetsOperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DeferredTaxAssetsValuationAllowance": { "auth_ref": [ "r207" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 0.0, "parentTag": "us-gaap_DeferredTaxAssetsNet", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.", "label": "Deferred Tax Assets, Valuation Allowance", "negatedLabel": "Valuation Allowance" } } }, "localname": "DeferredTaxAssetsValuationAllowance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "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": "Warrant Liabilities [Member]" } } }, "localname": "DerivativeFinancialInstrumentsLiabilitiesMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "WARRANT LIABILITIES [Abstract]" } } }, "localname": "DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet": { "auth_ref": [ "r239", "r240" ], "calculation": { "http://riverview.com/role/StatementOfOperations": { "order": 2.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.", "label": "Change in fair value of warrant liabilities", "verboseLabel": "Liability derecognized" } } }, "localname": "DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLiabilities": { "auth_ref": [ "r30", "r31", "r32", "r264" ], "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 Liability", "terseLabel": "Warrant liability" } } }, "localname": "DerivativeLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativeLiabilitiesNoncurrent": { "auth_ref": [ "r30" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 1.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "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, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.", "label": "Warrant liabilities" } } }, "localname": "DerivativeLiabilitiesNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_DerivativesAndFairValueTextBlock": { "auth_ref": [ "r247", "r262" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for derivatives and fair value of assets and liabilities.", "label": "Derivatives and Fair Value [Text Block]", "terseLabel": "WARRANT LIABILITIES" } } }, "localname": "DerivativesAndFairValueTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/WarrantLiabilities" ], "xbrltype": "textBlockItemType" }, "us-gaap_DerivativesEmbeddedDerivatives": { "auth_ref": [ "r233", "r234", "r242", "r243" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for embedded derivatives, including how such derivatives are identified and analyzed for possible separation from their host contracts.", "label": "Derivatives, Embedded Derivatives [Policy Text Block]", "terseLabel": "Warrant Liabilities" } } }, "localname": "DerivativesEmbeddedDerivatives", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_DerivativesPolicyTextBlock": { "auth_ref": [ "r64", "r235", "r236", "r237", "r238", "r241" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for its derivative instruments and hedging activities.", "label": "Derivatives, Policy [Policy Text Block]", "terseLabel": "Derivative Financial Instruments" } } }, "localname": "DerivativesPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_DueToOtherRelatedPartiesClassifiedCurrent": { "auth_ref": [ "r21", "r63", "r276" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount payable to related parties classified as other, due within one year or the normal operating cycle, if longer.", "label": "Accrued administrative service expenses" } } }, "localname": "DueToOtherRelatedPartiesClassifiedCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_EarningsPerShareAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Earnings Per Share [Abstract]", "verboseLabel": "Net Income (Loss) Per Common Share [Abstract]" } } }, "localname": "EarningsPerShareAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareBasic": { "auth_ref": [ "r40", "r71", "r72", "r73", "r74", "r75", "r79", "r81", "r86", "r88", "r89", "r92", "r93", "r245", "r246", "r314", "r322" ], "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": "Basic net income per common share (in dollars per share)" } } }, "localname": "EarningsPerShareBasic", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerShareBasicTwoClassMethodAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Basic and Diluted Net Income (Loss) Per Common Share [Abstract]" } } }, "localname": "EarningsPerShareBasicTwoClassMethodAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EarningsPerShareDiluted": { "auth_ref": [ "r40", "r71", "r72", "r73", "r74", "r75", "r81", "r86", "r88", "r89", "r92", "r93", "r245", "r246", "r314", "r322" ], "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": "Diluted net income per common share (in dollars per share)" } } }, "localname": "EarningsPerShareDiluted", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_EarningsPerSharePolicyTextBlock": { "auth_ref": [ "r90", "r91" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.", "label": "Earnings Per Share, Policy [Policy Text Block]", "terseLabel": "Net income (Loss) per Common Share" } } }, "localname": "EarningsPerSharePolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_EffectiveIncomeTaxRateContinuingOperations": { "auth_ref": [ "r200" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": null, "parentTag": null, "root": true, "weight": null } }, "lang": { "en-us": { "role": { "documentation": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.", "label": "Effective Income Tax Rate Reconciliation, Percent", "totalLabel": "Income tax provision" } } }, "localname": "EffectiveIncomeTaxRateContinuingOperations", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Effective Income Tax Rate Reconciliation, Percent [Abstract]" } } }, "localname": "EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": { "auth_ref": [ "r61", "r200", "r222" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 6.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).", "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent", "terseLabel": "Statutory federal income tax rate" } } }, "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance": { "auth_ref": [ "r200", "r222" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 0.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.", "label": "Valuation allowance" } } }, "localname": "EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment": { "auth_ref": [ "r200", "r222" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 1.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to meals and entertainment expense.", "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Percent", "terseLabel": "Meals and entertainment" } } }, "localname": "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes": { "auth_ref": [ "r200", "r222" ], "calculation": { "http://riverview.com/role/IncomeTaxDetails": { "order": 5.0, "parentTag": "us-gaap_EffectiveIncomeTaxRateContinuingOperations", "weight": 1.0 } }, "lang": { "en-us": { "role": { "documentation": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).", "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent", "terseLabel": "State taxes, net of federal tax benefit" } } }, "localname": "EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "percentItemType" }, "us-gaap_EquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "STOCKHOLDERS' EQUITY [Abstract]" } } }, "localname": "EquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_EquityComponentDomain": { "auth_ref": [ "r0", "r36", "r37", "r38", "r66", "r67", "r68", "r70", "r76", "r78", "r94", "r121", "r168", "r175", "r192", "r193", "r194", "r217", "r218", "r244", "r267", "r268", "r269", "r270", "r271", "r272", "r327", "r328", "r329", "r350" ], "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]" } } }, "localname": "EquityComponentDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueAdjustmentOfWarrants": { "auth_ref": [ "r51", "r147" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 0.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of expense (income) related to adjustment to fair value of warrant liability.", "label": "Change in fair value of warrants liabilities" } } }, "localname": "FairValueAdjustmentOfWarrants", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "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]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": { "auth_ref": [ "r248", "r249", "r250", "r259" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.", "label": "Fair Value, Recurring and Nonrecurring [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value Measurement Inputs and Valuation Techniques [Line Items]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of information about input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.", "label": "Fair Value Measurement Inputs and Valuation Techniques [Table]" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock": { "auth_ref": [ "r251" ], "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": "Level 3 Fair Value Measurements" } } }, "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueByFairValueHierarchyLevelAxis": { "auth_ref": [ "r143", "r145", "r146", "r179", "r180", "r181", "r182", "r183", "r184", "r185", "r187", "r249", "r287", "r288", "r289" ], "lang": { "en-us": { "role": { "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.", "label": "Fair Value Hierarchy and NAV [Axis]" } } }, "localname": "FairValueByFairValueHierarchyLevelAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByLiabilityClassAxis": { "auth_ref": [ "r258", "r259" ], "lang": { "en-us": { "role": { "documentation": "Information by class of liability.", "label": "Liability Class [Axis]" } } }, "localname": "FairValueByLiabilityClassAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueByMeasurementFrequencyAxis": { "auth_ref": [ "r248", "r249", "r252", "r253", "r260" ], "lang": { "en-us": { "role": { "documentation": "Information by measurement frequency.", "label": "Measurement Frequency [Axis]" } } }, "localname": "FairValueByMeasurementFrequencyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "FAIR VALUE MEASUREMENTS [Abstract]" } } }, "localname": "FairValueDisclosuresAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_FairValueDisclosuresTextBlock": { "auth_ref": [ "r258" ], "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 MEASUREMENTS" } } }, "localname": "FairValueDisclosuresTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurements" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueInputsLevel1Member": { "auth_ref": [ "r143", "r179", "r180", "r185", "r187", "r249", "r287" ], "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": "Level 1 [Member]" } } }, "localname": "FairValueInputsLevel1Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueInputsLevel3Member": { "auth_ref": [ "r143", "r145", "r146", "r179", "r180", "r181", "r182", "r183", "r184", "r185", "r187", "r249", "r289" ], "lang": { "en-us": { "role": { "documentation": "Unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Level 3 [Member]" } } }, "localname": "FairValueInputsLevel3Member", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain": { "auth_ref": [ "r254" ], "lang": { "en-us": { "role": { "documentation": "Represents classes of liabilities measured and disclosed at fair value.", "label": "Fair Value by Liability Class [Domain]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Changes in Fair Value of Level 3 Warrant Liabilities [Roll Forward]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable": { "auth_ref": [ "r254", "r259" ], "lang": { "en-us": { "role": { "documentation": "Schedule of information required and determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of liabilities using significant unobservable inputs (level 3). Separately presenting changes during the period, attributable to: (1) total gains or losses for the period (realized and unrealized) and location reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); (3) transfers in and/or out of Level 3.", "label": "Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock": { "auth_ref": [ "r254", "r259" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.", "label": "Changes in Fair Value of Level 3 Warrant Liabilities" } } }, "localname": "FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_FairValueMeasurementFrequencyDomain": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Measurement frequency.", "label": "Measurement Frequency [Domain]" } } }, "localname": "FairValueMeasurementFrequencyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3": { "auth_ref": [ "r257" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3", "negatedLabel": "Transfer to Level 1" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings": { "auth_ref": [ "r255" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings", "negatedLabel": "Change in valuation inputs or other assumptions" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues": { "auth_ref": [ "r256" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Initial measurement" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue": { "auth_ref": [ "r254" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.", "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value", "periodEndLabel": "Fair value, end of period", "periodStartLabel": "Fair value, beginning of period" } } }, "localname": "FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsChangesInFairValueOfLevel3WarrantLiabilitiesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": { "auth_ref": [ "r143", "r145", "r146", "r179", "r180", "r181", "r182", "r183", "r184", "r185", "r187", "r287", "r288", "r289" ], "lang": { "en-us": { "role": { "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.", "label": "Fair Value Hierarchy and NAV [Domain]" } } }, "localname": "FairValueMeasurementsFairValueHierarchyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueMeasurementsRecurringMember": { "auth_ref": [ "r258", "r260" ], "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": "Recurring [Member]" } } }, "localname": "FairValueMeasurementsRecurringMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "domainItemType" }, "us-gaap_FairValueOfFinancialInstrumentsPolicy": { "auth_ref": [ "r261", "r263" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for determining the fair value of financial instruments.", "label": "Fair Value of Financial Instruments" } } }, "localname": "FairValueOfFinancialInstrumentsPolicy", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Federal [Abstract]" } } }, "localname": "FederalIncomeTaxExpenseBenefitContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IPOMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "First sale of stock by a private company to the public.", "label": "IPO [Member]", "terseLabel": "Initial Public Offering [Member]" } } }, "localname": "IPOMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_IncomeStatementAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "STATEMENT OF OPERATIONS [Abstract]" } } }, "localname": "IncomeStatementAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "INCOME TAX [Abstract]", "terseLabel": "Income Taxes [Abstract]" } } }, "localname": "IncomeTaxDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxDisclosureTextBlock": { "auth_ref": [ "r61", "r201", "r204", "r210", "r219", "r223", "r225", "r226", "r227" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.", "label": "INCOME TAX" } } }, "localname": "IncomeTaxDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTax" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxExpenseBenefit": { "auth_ref": [ "r62", "r77", "r78", "r107", "r199", "r220", "r224", "r324" ], "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)", "terseLabel": "Income tax provision" } } }, "localname": "IncomeTaxExpenseBenefit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncomeTaxExpenseBenefitContinuingOperationsByJurisdictionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Income Tax Provision [Abstract]" } } }, "localname": "IncomeTaxExpenseBenefitContinuingOperationsByJurisdictionAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_IncomeTaxPolicyTextBlock": { "auth_ref": [ "r35", "r197", "r198", "r204", "r205", "r209", "r216" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.", "label": "Income Taxes" } } }, "localname": "IncomeTaxPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance": { "auth_ref": [ "r200" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.", "label": "Change in valuation allowance" } } }, "localname": "IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInAccruedLiabilities": { "auth_ref": [ "r50" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.", "label": "Accrued expenses" } } }, "localname": "IncreaseDecreaseInAccruedLiabilities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Changes in operating assets and liabilities:" } } }, "localname": "IncreaseDecreaseInOperatingCapitalAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInOtherNoncurrentAssets": { "auth_ref": [ "r50" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of increase (decrease) in noncurrent assets classified as other.", "label": "Increase (Decrease) in Other Noncurrent Assets", "negatedLabel": "Other Long-Term Assets" } } }, "localname": "IncreaseDecreaseInOtherNoncurrentAssets", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssetsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Prepaid expenses and other current assets" } } }, "localname": "IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssetsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_IncreaseDecreaseInPrepaidExpense": { "auth_ref": [ "r50" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 6.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.", "label": "Increase (Decrease) in Prepaid Expense", "negatedLabel": "Prepaid expenses" } } }, "localname": "IncreaseDecreaseInPrepaidExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_IncreaseDecreaseInStockholdersEquityRollForward": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.", "label": "Increase (Decrease) in Stockholders' Equity [Roll Forward]" } } }, "localname": "IncreaseDecreaseInStockholdersEquityRollForward", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "stringItemType" }, "us-gaap_InvestmentIncomeInterest": { "auth_ref": [ "r42", "r106" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://riverview.com/role/StatementOfOperations": { "order": 0.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.", "label": "Investment Income, Interest", "negatedLabel": "Interest earned on marketable securities held in Trust Account", "terseLabel": "Interest earned on marketable securities held in Trust Account" } } }, "localname": "InvestmentIncomeInterest", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestmentPolicyTextBlock": { "auth_ref": [ "r119", "r323" ], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for investment in financial asset.", "label": "Investment, Policy [Policy Text Block]", "terseLabel": "Marketable Securities Held in Trust Account" } } }, "localname": "InvestmentPolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_InvestmentsFairValueDisclosure": { "auth_ref": [ "r248" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.", "label": "Investments, Fair Value Disclosure", "terseLabel": "Marketable securities held in Trust Account" } } }, "localname": "InvestmentsFairValueDisclosure", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_InvestorMember": { "auth_ref": [ "r275", "r276" ], "lang": { "en-us": { "role": { "documentation": "Business entity or individual that puts money, by purchase or expenditure, in something offering potential profitable returns, such as interest income or appreciation in value.", "label": "Sponsor [Member]", "terseLabel": "Sponsor [Member]" } } }, "localname": "InvestorMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_Liabilities": { "auth_ref": [ "r23", "r59", "r111", "r120", "r129", "r130", "r131", "r133", "r134", "r135", "r136", "r137", "r138", "r139", "r229", "r230", "r231", "r265", "r282", "r283" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 3.0, "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/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquity": { "auth_ref": [ "r17", "r59", "r120", "r265", "r284", "r311", "r318" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.", "label": "Liabilities and Equity", "totalLabel": "Total Liabilities and Stockholders' Deficit" } } }, "localname": "LiabilitiesAndStockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesAndStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities and Equity [Abstract]", "terseLabel": "LIABILITIES AND STOCKHOLDERS' DEFICIT" } } }, "localname": "LiabilitiesAndStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesCurrent": { "auth_ref": [ "r25", "r59", "r120", "r129", "r130", "r131", "r133", "r134", "r135", "r136", "r137", "r138", "r139", "r229", "r230", "r231", "r265", "r282", "r283", "r284" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 0.0, "parentTag": "us-gaap_Liabilities", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.", "label": "Liabilities, Current", "totalLabel": "Total current liabilities" } } }, "localname": "LiabilitiesCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_LiabilitiesCurrentAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Current Liabilities:" } } }, "localname": "LiabilitiesCurrentAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "stringItemType" }, "us-gaap_LiabilitiesFairValueDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Liabilities [Abstract]" } } }, "localname": "LiabilitiesFairValueDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" ], "xbrltype": "stringItemType" }, "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": { "auth_ref": [ "r22" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.", "label": "Promissory note, maximum borrowing capacity" } } }, "localname": "LineOfCreditFacilityMaximumBorrowingCapacity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_MarketableSecuritiesUnrealizedGainLoss": { "auth_ref": [ "r41" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": -1.0 }, "http://riverview.com/role/StatementOfOperations": { "order": 1.0, "parentTag": "us-gaap_NonoperatingIncomeExpense", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of unrealized gain (loss) on investment in marketable security.", "label": "Unrealized loss on marketable securities held in Trust Account", "negatedLabel": "Unrealized loss on marketable securities held in Trust Account" } } }, "localname": "MarketableSecuritiesUnrealizedGainLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "us-gaap_MeasurementInputExercisePriceMember": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using agreed upon price for exchange of underlying asset.", "label": "Exercise Price [Member]" } } }, "localname": "MeasurementInputExercisePriceMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputExpectedDividendRateMember": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using expected dividend rate to be paid to holder of share per year.", "label": "Dividend Yield [Member]" } } }, "localname": "MeasurementInputExpectedDividendRateMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputPriceVolatilityMember": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using rate at which price of security will increase (decrease) for given set of returns.", "label": "Volatility [Member]" } } }, "localname": "MeasurementInputPriceVolatilityMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputRiskFreeInterestRateMember": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using interest rate on instrument with zero risk of financial loss.", "label": "Risk-free Rate [Member]" } } }, "localname": "MeasurementInputRiskFreeInterestRateMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputSharePriceMember": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Measurement input using share price of saleable stock.", "label": "Stock Price [Member]" } } }, "localname": "MeasurementInputSharePriceMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_MeasurementInputTypeAxis": { "auth_ref": [ "r251" ], "lang": { "en-us": { "role": { "documentation": "Information by type of measurement input used to determine value of asset and liability.", "label": "Measurement Input Type [Axis]" } } }, "localname": "MeasurementInputTypeAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "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]" } } }, "localname": "MeasurementInputTypeDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivities": { "auth_ref": [ "r48" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.", "label": "Net Cash Provided by (Used in) Financing Activities", "totalLabel": "Net cash provided by financing activities" } } }, "localname": "NetCashProvidedByUsedInFinancingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash Flows from Financing Activities:" } } }, "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivities": { "auth_ref": [ "r48" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 0.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.", "label": "Net Cash Provided by (Used in) Investing Activities", "totalLabel": "Net cash used in investing activities" } } }, "localname": "NetCashProvidedByUsedInInvestingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash Flows from Investing Activities:" } } }, "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivities": { "auth_ref": [ "r48", "r49", "r52" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect", "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 used in operating activities" } } }, "localname": "NetCashProvidedByUsedInOperatingActivities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Cash Flows from Operating Activities:" } } }, "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "stringItemType" }, "us-gaap_NetIncomeLoss": { "auth_ref": [ "r1", "r33", "r34", "r38", "r39", "r52", "r59", "r69", "r71", "r72", "r73", "r74", "r77", "r78", "r84", "r108", "r109", "r112", "r113", "r115", "r120", "r129", "r130", "r131", "r133", "r134", "r135", "r136", "r137", "r138", "r139", "r246", "r265", "r313", "r321" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 7.0, "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities", "weight": 1.0 }, "http://riverview.com/role/StatementOfOperations": { "order": null, "parentTag": null, "root": true, "weight": null } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.", "label": "Net income", "terseLabel": "Net income", "totalLabel": "Net income" } } }, "localname": "NetIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "us-gaap_NetIncomeLossAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Numerator: [Abstract]" } } }, "localname": "NetIncomeLossAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "stringItemType" }, "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/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_NonoperatingIncomeExpense": { "auth_ref": [ "r43" ], "calculation": { "http://riverview.com/role/StatementOfOperations": { "order": 1.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).", "label": "Nonoperating Income (Expense)", "totalLabel": "Other income, net" } } }, "localname": "NonoperatingIncomeExpense", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "us-gaap_NonoperatingIncomeExpenseAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Other income (expense):" } } }, "localname": "NonoperatingIncomeExpenseAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "stringItemType" }, "us-gaap_NotesPayableRelatedPartiesClassifiedCurrent": { "auth_ref": [ "r20", "r63", "r277" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount for notes payable (written promise to pay), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).", "label": "Promissory note, amount outstanding" } } }, "localname": "NotesPayableRelatedPartiesClassifiedCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent": { "auth_ref": [ "r63", "r276", "r320" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The amount for notes payable (written promise to pay), due to related parties.", "label": "Notes payable, related parties" } } }, "localname": "NotesPayableRelatedPartiesCurrentAndNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingExpenses": { "auth_ref": [], "calculation": { "http://riverview.com/role/StatementOfOperations": { "order": 0.0, "parentTag": "us-gaap_OperatingIncomeLoss", "weight": -1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.", "label": "Operating Expenses", "terseLabel": "Operating and formation costs" } } }, "localname": "OperatingExpenses", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingIncomeLoss": { "auth_ref": [ "r108", "r109", "r112", "r113", "r115" ], "calculation": { "http://riverview.com/role/StatementOfOperations": { "order": 0.0, "parentTag": "us-gaap_NetIncomeLoss", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The net result for the period of deducting operating expenses from operating revenues.", "label": "Operating Income (Loss)", "totalLabel": "Loss from operations" } } }, "localname": "OperatingIncomeLoss", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations" ], "xbrltype": "monetaryItemType" }, "us-gaap_OperatingIncomeLossAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Operating Income (Loss) [Abstract]", "terseLabel": "Loss from Operation" } } }, "localname": "OperatingIncomeLossAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StatementOfOperationsParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_OperatingLossCarryforwards": { "auth_ref": [ "r211" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.", "label": "Federal net operating loss carryovers" } } }, "localname": "OperatingLossCarryforwards", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS [Abstract]" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock": { "auth_ref": [ "r2", "r232" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.", "label": "DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS" } } }, "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperations" ], "xbrltype": "textBlockItemType" }, "us-gaap_OtherAssetsNoncurrent": { "auth_ref": [ "r19" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 0.0, "parentTag": "us-gaap_Assets", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of noncurrent assets classified as other.", "label": "Other Long-Term Assets" } } }, "localname": "OtherAssetsNoncurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_OverAllotmentOptionMember": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Right given to the underwriter to sell additional shares over the initial allotment.", "label": "Over-Allotment Option [Member]" } } }, "localname": "OverAllotmentOptionMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_PaymentsOfStockIssuanceCosts": { "auth_ref": [ "r47" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 5.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for cost incurred directly with the issuance of an equity security.", "label": "Payments of Stock Issuance Costs", "negatedLabel": "Payment of offering costs" } } }, "localname": "PaymentsOfStockIssuanceCosts", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PaymentsToAcquireMarketableSecurities": { "auth_ref": [ "r118" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 0.0, "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of cash outflow for purchase of marketable security.", "label": "Payments to Acquire Marketable Securities", "negatedLabel": "Investment of cash in Trust Account", "terseLabel": "Cash deposited in Trust Account" } } }, "localname": "PaymentsToAcquireMarketableSecurities", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_PreferredStockParOrStatedValuePerShare": { "auth_ref": [ "r11", "r152" ], "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 value (in dollars per share)" } } }, "localname": "PreferredStockParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_PreferredStockSharesAuthorized": { "auth_ref": [ "r11" ], "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 (in shares)" } } }, "localname": "PreferredStockSharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesIssued": { "auth_ref": [ "r11", "r152" ], "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 (in shares)" } } }, "localname": "PreferredStockSharesIssued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockSharesOutstanding": { "auth_ref": [ "r11" ], "lang": { "en-us": { "role": { "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.", "label": "Preferred stock, shares outstanding (in shares)" } } }, "localname": "PreferredStockSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_PreferredStockValue": { "auth_ref": [ "r11", "r284" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 1.0, "parentTag": "us-gaap_StockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.", "label": "Preferred stock, $0.001 par value; 1,000,000 shares authorized, none issued and outstanding" } } }, "localname": "PreferredStockValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_PrepaidExpenseCurrent": { "auth_ref": [ "r3", "r5", "r122", "r123" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 1.0, "parentTag": "us-gaap_AssetsCurrent", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.", "label": "Prepaid expenses" } } }, "localname": "PrepaidExpenseCurrent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "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]" } } }, "localname": "PrivatePlacementMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/PrivatePlacementDetails" ], "xbrltype": "domainItemType" }, "us-gaap_ProceedsFromIssuanceInitialPublicOffering": { "auth_ref": [ "r44" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 1.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow associated with the amount received from entity's first offering of stock to the public.", "label": "Proceeds from sale of Units, net of underwriting discounts paid", "terseLabel": "Gross proceeds from initial public offering", "verboseLabel": "Gross proceeds" } } }, "localname": "ProceedsFromIssuanceInitialPublicOffering", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfCommonStock": { "auth_ref": [ "r44" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 0.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow from the additional capital contribution to the entity.", "label": "Proceeds from issuance of common stock", "terseLabel": "Proceeds from issuance of Class B common stock to Sponsor" } } }, "localname": "ProceedsFromIssuanceOfCommonStock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfPrivatePlacement": { "auth_ref": [ "r44" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 2.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.", "label": "Proceeds from Issuance of Private Placement", "terseLabel": "Gross proceeds from private placement", "verboseLabel": "Proceeds from sale of Private Placements Warrants" } } }, "localname": "ProceedsFromIssuanceOfPrivatePlacement", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOfWarrants": { "auth_ref": [ "r44" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).", "label": "Gross proceeds from issuance of warrants", "negatedLabel": "Less: Proceeds allocated to Public Warrants" } } }, "localname": "ProceedsFromIssuanceOfWarrants", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProceedsFromIssuanceOrSaleOfEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Proceeds from Issuance or Sale of Equity [Abstract]", "terseLabel": "Description of Organization and Business Operations [Abstract]" } } }, "localname": "ProceedsFromIssuanceOrSaleOfEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ProceedsFromRelatedPartyDebt": { "auth_ref": [ "r45" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 3.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": 1.0 } }, "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.", "label": "Proceeds from Related Party Debt", "terseLabel": "Proceeds from promissory note - related party" } } }, "localname": "ProceedsFromRelatedPartyDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_ProfessionalFees": { "auth_ref": [ "r334", "r335" ], "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": "Payment to underwriters" } } }, "localname": "ProfessionalFees", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RelatedPartyDomain": { "auth_ref": [ "r186", "r275", "r276" ], "lang": { "en-us": { "role": { "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Domain]" } } }, "localname": "RelatedPartyDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RelatedPartyTransactionAmountsOfTransaction": { "auth_ref": [ "r275", "r279" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Amount of transactions with related party during the financial reporting period.", "label": "Related party transaction amount" } } }, "localname": "RelatedPartyTransactionAmountsOfTransaction", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RelatedPartyTransactionAxis": { "auth_ref": [ "r186", "r275", "r276", "r279" ], "lang": { "en-us": { "role": { "documentation": "Information by type of related party transaction.", "label": "Related Party Transaction [Axis]" } } }, "localname": "RelatedPartyTransactionAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionDomain": { "auth_ref": [ "r186" ], "lang": { "en-us": { "role": { "documentation": "Transaction between related party.", "label": "Related Party Transaction [Domain]" } } }, "localname": "RelatedPartyTransactionDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "domainItemType" }, "us-gaap_RelatedPartyTransactionDueFromToRelatedPartyAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Related Party Loans [Abstract]", "terseLabel": "Promissory Note [Abstract]" } } }, "localname": "RelatedPartyTransactionDueFromToRelatedPartyAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty": { "auth_ref": [ "r275" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.", "label": "Fee incurred" } } }, "localname": "RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_RelatedPartyTransactionLineItems": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.", "label": "Related Party Transaction [Line Items]" } } }, "localname": "RelatedPartyTransactionLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "RELATED PARTY TRANSACTIONS [Abstract]" } } }, "localname": "RelatedPartyTransactionsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": { "auth_ref": [ "r186", "r275", "r279", "r298", "r299", "r300", "r301", "r302", "r303", "r304", "r305", "r306", "r307", "r308", "r309" ], "lang": { "en-us": { "role": { "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.", "label": "Related Party [Axis]" } } }, "localname": "RelatedPartyTransactionsByRelatedPartyAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": { "auth_ref": [ "r273", "r274", "r276", "r280", "r281" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Related Party Transactions Disclosure [Text Block]", "terseLabel": "RELATED PARTY TRANSACTIONS" } } }, "localname": "RelatedPartyTransactionsDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactions" ], "xbrltype": "textBlockItemType" }, "us-gaap_RepaymentsOfRelatedPartyDebt": { "auth_ref": [ "r46" ], "calculation": { "http://riverview.com/role/StatementOfCashFlows": { "order": 4.0, "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities", "weight": -1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.", "label": "Repayment of promissory note amount outstanding", "negatedLabel": "Repayment of promissory note - related party" } } }, "localname": "RepaymentsOfRelatedPartyDebt", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/StatementOfCashFlows" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsAccumulatedDeficit": { "auth_ref": [ "r14", "r175", "r195", "r284", "r317", "r330", "r331" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 4.0, "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": "Accumulated deficit" } } }, "localname": "RetainedEarningsAccumulatedDeficit", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet" ], "xbrltype": "monetaryItemType" }, "us-gaap_RetainedEarningsMember": { "auth_ref": [ "r0", "r66", "r67", "r68", "r70", "r76", "r78", "r121", "r192", "r193", "r194", "r217", "r218", "r244", "r327", "r329" ], "lang": { "en-us": { "role": { "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.", "label": "Accumulated Deficit [Member]" } } }, "localname": "RetainedEarningsMember", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "domainItemType" }, "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 [Domain]" } } }, "localname": "SaleOfStockNameOfTransactionDomain", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "domainItemType" }, "us-gaap_SaleOfStockPricePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.", "label": "Distribution or redemption price per share (in dollars per share)" } } }, "localname": "SaleOfStockPricePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": { "auth_ref": [ "r216" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.", "label": "Income Tax Provision" } } }, "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": { "auth_ref": [ "r208" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.", "label": "Net Deferred Tax Assets" } } }, "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock": { "auth_ref": [ "r89" ], "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": "Basic and Diluted Net Income (Loss) per Common Share" } } }, "localname": "ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": { "auth_ref": [ "r200" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.", "label": "Reconciliation of Federal Income Tax Rate to Effective Tax Rate" } } }, "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": { "auth_ref": [ "r248", "r249" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).", "label": "Assets and Liabilities Measured at Fair Value on Recurring Basis" } } }, "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": { "auth_ref": [ "r277", "r279" ], "lang": { "en-us": { "role": { "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.", "label": "Schedule of Related Party Transactions, by Related Party [Table]" } } }, "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsAdministrativeSupportAgreementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/RelatedPartyTransactionsPromissoryNoteDetails", "http://riverview.com/role/RelatedPartyTransactionsRelatedPartyLoansDetails" ], "xbrltype": "stringItemType" }, "us-gaap_ScheduleOfStockByClassTable": { "auth_ref": [ "r27", "r57", "r95", "r96", "r148", "r150", "r151", "r152", "r153", "r154", "r155", "r157", "r161", "r166", "r169", "r170", "r171", "r172", "r173", "r174", "r175" ], "lang": { "en-us": { "role": { "documentation": "Schedule detailing information related to equity by class of stock. Class of stock includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. It also includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity.", "label": "Schedule of Stock by Class [Table]" } } }, "localname": "ScheduleOfStockByClassTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SharePrice": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Price of a single share of a number of saleable stocks of a company.", "label": "Share Price", "verboseLabel": "Share price (in dollars per share)" } } }, "localname": "SharePrice", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_SharesIssuedPricePerShare": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Per share or per unit amount of equity securities issued.", "label": "Shares Issued, Price Per Share", "terseLabel": "Share price (in dollars per share)", "verboseLabel": "Original purchase price (in dollars per share)" } } }, "localname": "SharesIssuedPricePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_SharesOutstanding": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of shares issued which are neither cancelled nor held in the treasury.", "label": "Shares, Outstanding", "periodEndLabel": "Ending balance (in shares)", "periodStartLabel": "Beginning balance (in shares)" } } }, "localname": "SharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "sharesItemType" }, "us-gaap_SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Disclosure of accounting policy for recognition of changes in redemption value of mandatorily redeemable shares. Provides the period over which changes in redemption value are accreted, usually from the issuance date (or from the date that it becomes probable that the security will become redeemable, if later) to the earliest redemption date of the security.", "label": "Shares Subject to Mandatory Redemption, Changes in Redemption Value, Policy [Policy Text Block]", "terseLabel": "Class A Common Stock Subject to Possible Redemption" } } }, "localname": "SharesSubjectToMandatoryRedemptionChangesInRedemptionValuePolicyTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "State and Local [Abstract]" } } }, "localname": "StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/IncomeTaxDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementClassOfStockAxis": { "auth_ref": [ "r10", "r11", "r12", "r57", "r59", "r81", "r82", "r83", "r86", "r89", "r95", "r96", "r97", "r120", "r129", "r133", "r134", "r135", "r138", "r139", "r152", "r153", "r157", "r161", "r168", "r265", "r346" ], "lang": { "en-us": { "role": { "documentation": "Information by the different classes of stock of the entity.", "label": "Class of Stock [Axis]" } } }, "localname": "StatementClassOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/DocumentAndEntityInformation", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StatementOfOperationsParenthetical", "http://riverview.com/role/StockholdersEquityDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StatementEquityComponentsAxis": { "auth_ref": [ "r0", "r28", "r36", "r37", "r38", "r66", "r67", "r68", "r70", "r76", "r78", "r94", "r121", "r168", "r175", "r192", "r193", "r194", "r217", "r218", "r244", "r267", "r268", "r269", "r270", "r271", "r272", "r327", "r328", "r329", "r350" ], "lang": { "en-us": { "role": { "documentation": "Information by component of equity.", "label": "Equity Components [Axis]" } } }, "localname": "StatementEquityComponentsAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "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]" } } }, "localname": "StatementLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StatementOfOperationsParenthetical" ], "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/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfFinancialPositionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "BALANCE SHEET [Abstract]" } } }, "localname": "StatementOfFinancialPositionAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementOfStockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "STATEMENT OF CHANGES IN STOCKHOLDERS' DEFICIT [Abstract]" } } }, "localname": "StatementOfStockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_StatementTable": { "auth_ref": [ "r66", "r67", "r68", "r94", "r297" ], "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]" } } }, "localname": "StatementTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/StatementOfOperationsParenthetical" ], "xbrltype": "stringItemType" }, "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": "Issuance of Class B common stock to Sponsor (in shares)", "terseLabel": "Issuance of Class B ordinary shares to Sponsor (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesIssuedForServices", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesNewIssues": { "auth_ref": [ "r11", "r12", "r168", "r175" ], "lang": { "en-us": { "role": { "documentation": "Number of new stock issued during the period.", "label": "Issuance of founder shares to Anchor Investor (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesNewIssues", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Number of shares (or other type of equity) forfeited during the period.", "label": "Shares Issued, Shares, Share-based Payment Arrangement, Forfeited", "negatedLabel": "Forfeiture of founder shares (in shares)", "verboseLabel": "Common stock, shares forfeited (in shares)" } } }, "localname": "StockIssuedDuringPeriodSharesShareBasedCompensationForfeited", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit", "http://riverview.com/role/StatementOfOperationsParenthetical", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_StockIssuedDuringPeriodValueIssuedForServices": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.", "label": "Issuance of Class B ordinary shares to Sponsor" } } }, "localname": "StockIssuedDuringPeriodValueIssuedForServices", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodValueNewIssues": { "auth_ref": [ "r11", "r12", "r168", "r175" ], "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": "Aggregate fair value of shares issued to Anchor Investors" } } }, "localname": "StockIssuedDuringPeriodValueNewIssues", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationForfeited": { "auth_ref": [ "r191" ], "crdr": "debit", "lang": { "en-us": { "role": { "documentation": "Value of forfeited shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).", "label": "Shares Issued, Value, Share-based Payment Arrangement, Forfeited", "terseLabel": "Forfeiture of founder shares" } } }, "localname": "StockIssuedDuringPeriodValueShareBasedCompensationForfeited", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquity": { "auth_ref": [ "r12", "r15", "r16", "r59", "r117", "r120", "r265", "r284" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 6.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.", "label": "Stockholders' Equity Attributable to Parent", "periodEndLabel": "Ending balance", "periodStartLabel": "Beginning balance", "totalLabel": "Total Stockholders' Deficit" } } }, "localname": "StockholdersEquity", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/StatementOfChangesInShareholdersDeficit" ], "xbrltype": "monetaryItemType" }, "us-gaap_StockholdersEquityAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Stockholders' Equity Attributable to Parent [Abstract]", "terseLabel": "Stockholders' Deficit" } } }, "localname": "StockholdersEquityAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/BalanceSheetParenthetical" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityNoteAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Stockholders' Equity Note [Abstract]", "terseLabel": "Stockholder's Equity [Abstract]" } } }, "localname": "StockholdersEquityNoteAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "stringItemType" }, "us-gaap_StockholdersEquityNoteDisclosureTextBlock": { "auth_ref": [ "r58", "r153", "r156", "r157", "r158", "r159", "r160", "r161", "r162", "r163", "r164", "r165", "r167", "r175", "r177" ], "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": "STOCKHOLDERS' EQUITY" } } }, "localname": "StockholdersEquityNoteDisclosureTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StockholdersEquity" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsequentEventsAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "SUBSEQUENT EVENTS [Abstract]" } } }, "localname": "SubsequentEventsAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "xbrltype": "stringItemType" }, "us-gaap_SubsequentEventsTextBlock": { "auth_ref": [ "r285", "r286" ], "lang": { "en-us": { "role": { "documentation": "The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.", "label": "Subsequent Events [Text Block]", "terseLabel": "SUBSEQUENT EVENTS" } } }, "localname": "SubsequentEventsTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SubsequentEvents" ], "xbrltype": "textBlockItemType" }, "us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Different names of stock transactions and the different attributes of each transaction.", "label": "Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table]" } } }, "localname": "SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsidiarySaleOfStockAxis": { "auth_ref": [], "lang": { "en-us": { "role": { "documentation": "Information by type of sale of the entity's stock.", "label": "Sale of Stock [Axis]" } } }, "localname": "SubsidiarySaleOfStockAxis", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/PrivatePlacementDetails", "http://riverview.com/role/RelatedPartyTransactionsFounderSharesDetails", "http://riverview.com/role/StatementOfCashFlows", "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_SubsidiarySaleOfStockLineItems": { "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": "Subsidiary, Sale of Stock [Line Items]" } } }, "localname": "SubsidiarySaleOfStockLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/CommitmentsUnderwritingAgreementDetails", "http://riverview.com/role/DescriptionOfOrganizationAndBusinessOperationsDetails", "http://riverview.com/role/InitialPublicOfferingDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesDerivativeFinancialInstrumentsDetails", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesOfferingCostsDetails" ], "xbrltype": "stringItemType" }, "us-gaap_TemporaryEquityAccretionToRedemptionValue": { "auth_ref": [], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Value of accretion of temporary equity to its redemption value during the period.", "label": "Temporary Equity, Accretion to Redemption Value", "verboseLabel": "Plus: Accretion of carrying value to redemption value" } } }, "localname": "TemporaryEquityAccretionToRedemptionValue", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TemporaryEquityByClassOfStockTable": { "auth_ref": [ "r7", "r149" ], "lang": { "en-us": { "role": { "documentation": "Table of capital stock that is classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. This table may include a description by series, value, shares authorized, shares issued and outstanding, redemption price per share and subscription receivable.", "label": "Temporary Equity, by Class of Stock [Table]" } } }, "localname": "TemporaryEquityByClassOfStockTable", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_TemporaryEquityCarryingAmountAttributableToParent": { "auth_ref": [ "r129", "r133", "r134", "r135", "r138", "r139" ], "calculation": { "http://riverview.com/role/BalanceSheet": { "order": 5.0, "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity", "weight": 1.0 } }, "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.", "label": "Class A common stock, $0.0001 par value; 85,000,000 shares authorized; 25,000,000 shares subject to possible redemption at redemption value", "verboseLabel": "Class A ordinary shares subject to possible redemption" } } }, "localname": "TemporaryEquityCarryingAmountAttributableToParent", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheet", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_TemporaryEquityLineItems": { "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": "Temporary Equity [Line Items]" } } }, "localname": "TemporaryEquityLineItems", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesClassOrdinarySharesSubjectToPossibleRedemptionDetails" ], "xbrltype": "stringItemType" }, "us-gaap_TemporaryEquityParOrStatedValuePerShare": { "auth_ref": [ "r7", "r149" ], "lang": { "en-us": { "role": { "documentation": "Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.", "label": "Common stock, subject to possible redemption, par value (in dollars per share)" } } }, "localname": "TemporaryEquityParOrStatedValuePerShare", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "perShareItemType" }, "us-gaap_TemporaryEquitySharesAuthorized": { "auth_ref": [ "r9" ], "lang": { "en-us": { "role": { "documentation": "The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.", "label": "Common stock, subject to possible redemption, shares authorized (in shares)" } } }, "localname": "TemporaryEquitySharesAuthorized", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TemporaryEquitySharesIssued": { "auth_ref": [ "r9" ], "lang": { "en-us": { "role": { "documentation": "The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.", "label": "Common stock, subject to possible redemption, shares issued (in shares)" } } }, "localname": "TemporaryEquitySharesIssued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TemporaryEquitySharesOutstanding": { "auth_ref": [ "r9" ], "lang": { "en-us": { "role": { "documentation": "The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.", "label": "Common stock, subject to possible redemption (in shares)", "verboseLabel": "Common stock, subject to possible redemption, shares outstanding (in shares)" } } }, "localname": "TemporaryEquitySharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/BalanceSheetParenthetical", "http://riverview.com/role/StockholdersEquityDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_TemporaryEquityTableTextBlock": { "auth_ref": [ "r7", "r149" ], "lang": { "en-us": { "role": { "documentation": "Tabular disclosure of temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.", "label": "Class A ordinary shares subject to possible redemption" } } }, "localname": "TemporaryEquityTableTextBlock", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesTables" ], "xbrltype": "textBlockItemType" }, "us-gaap_UndistributedEarnings": { "auth_ref": [ "r85", "r87" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed.", "label": "Allocation of net income (loss), as adjusted" } } }, "localname": "UndistributedEarnings", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefits": { "auth_ref": [ "r196", "r203" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount of unrecognized tax benefits.", "label": "Unrecognized Tax Benefits", "terseLabel": "Unrecognized tax benefits" } } }, "localname": "UnrecognizedTaxBenefits", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued": { "auth_ref": [ "r202" ], "crdr": "credit", "lang": { "en-us": { "role": { "documentation": "Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.", "label": "Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued", "terseLabel": "Accrued interest and penalties" } } }, "localname": "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails" ], "xbrltype": "monetaryItemType" }, "us-gaap_UseOfEstimates": { "auth_ref": [ "r98", "r99", "r101", "r102", "r103", "r104", "r105" ], "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" } } }, "localname": "UseOfEstimates", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesPolicies" ], "xbrltype": "textBlockItemType" }, "us-gaap_ValuationTechniqueAndInputDescriptionAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Valuation Technique and Input, Description [Abstract]", "terseLabel": "Fair Value Measurements [Abstract]" } } }, "localname": "ValuationTechniqueAndInputDescriptionAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WarrantsAndRightsNoteDisclosureAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Warrants and Rights Note Disclosure [Abstract]", "terseLabel": "Warrants [Abstract]" } } }, "localname": "WarrantsAndRightsNoteDisclosureAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WarrantsAndRightsOutstandingMeasurementInput": { "auth_ref": [ "r253" ], "lang": { "en-us": { "role": { "documentation": "Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.", "label": "Measurement input" } } }, "localname": "WarrantsAndRightsOutstandingMeasurementInput", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails" ], "xbrltype": "decimalItemType" }, "us-gaap_WarrantsAndRightsOutstandingTerm": { "auth_ref": [ "r253" ], "lang": { "en-us": { "role": { "documentation": "Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.", "label": "Expiration period of warrants", "terseLabel": "Expected term" } } }, "localname": "WarrantsAndRightsOutstandingTerm", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/FairValueMeasurementsLevel3FairValueMeasurementDetails", "http://riverview.com/role/WarrantLiabilitiesDetails" ], "xbrltype": "durationItemType" }, "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": { "auth_ref": [ "r80", "r89" ], "lang": { "en-us": { "role": { "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.", "label": "Weighted Average Number of Shares Outstanding, Diluted", "terseLabel": "Diluted weighted average shares outstanding (in shares)" } } }, "localname": "WeightedAverageNumberOfDilutedSharesOutstanding", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "sharesItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": { "auth_ref": [], "lang": { "en-us": { "role": { "label": "Denominator: [Abstract]" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingAbstract", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "stringItemType" }, "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": { "auth_ref": [ "r79", "r89" ], "lang": { "en-us": { "role": { "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.", "label": "Weighted Average Number of Shares Outstanding, Basic", "terseLabel": "Basic weighted average shares outstanding (in shares)" } } }, "localname": "WeightedAverageNumberOfSharesOutstandingBasic", "nsuri": "http://fasb.org/us-gaap/2021-01-31", "presentation": [ "http://riverview.com/role/StatementOfOperations", "http://riverview.com/role/SummaryOfSignificantAccountingPoliciesNetLossPerCommonShareDetails" ], "xbrltype": "sharesItemType" } }, "unitCount": 7 } }, "std_ref": { "r0": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "105", "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695" }, "r1": { "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" }, "r10": { "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" }, "r100": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "275", "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592" }, "r101": { "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" }, "r102": { "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" }, "r103": { "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" }, "r104": { "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" }, "r105": { "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" }, "r106": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r107": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r108": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599" }, "r109": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r11": { "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" }, "r110": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r111": { "Name": "Accounting Standards Codification", "Paragraph": "30", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599" }, "r112": { "Name": "Accounting Standards Codification", "Paragraph": "31", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599" }, "r113": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r114": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r115": { "Name": "Accounting Standards Codification", "Paragraph": "32", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "280", "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599" }, "r116": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "310", "URI": "http://asc.fasb.org/extlink&oid=124259787&loc=d3e4647-111522" }, "r117": { "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=122038336&loc=d3e74512-122707" }, "r118": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "320", "URI": "http://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562" }, "r119": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)(2)", "Topic": "323", "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571" }, "r12": { "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" }, "r120": { "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" }, "r121": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "326", "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437" }, "r122": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "05", "SubTopic": "10", "Topic": "340", "URI": "http://asc.fasb.org/extlink&oid=123349782&loc=d3e5879-108316" }, "r123": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "340", "URI": "http://asc.fasb.org/extlink&oid=6387103&loc=d3e6435-108320" }, "r124": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r125": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "440", "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308" }, "r126": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "440", "URI": "http://asc.fasb.org/topic&trid=2144648" }, "r127": { "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" }, "r128": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "450", "URI": "http://asc.fasb.org/topic&trid=2127136" }, "r129": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(i))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r13": { "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" }, "r130": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(ii))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r131": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii)(A))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r132": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iii))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r133": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(4)(iv))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r134": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-01(a)(5))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756" }, "r135": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(i))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r136": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r137": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r138": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(4)(iv))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r139": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.13-02(a)(5))", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756" }, "r14": { "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" }, "r140": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "25", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466302&loc=d3e4724-112606" }, "r141": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r142": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611" }, "r143": { "Name": "Accounting Standards Codification", "Paragraph": "1D", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(c)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611" }, "r144": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(b)", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466204&loc=SL6031898-161870" }, "r145": { "Name": "Accounting Standards Codification", "Paragraph": "69B", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612" }, "r146": { "Name": "Accounting Standards Codification", "Paragraph": "69C", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "470", "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612" }, "r147": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=109262497&loc=d3e20148-110875" }, "r148": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(CFRR 211.02)", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=122040564&loc=d3e177068-122764" }, "r149": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Topic": "480", "URI": "http://asc.fasb.org/extlink&oid=122040564&loc=d3e177068-122764" }, "r15": { "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" }, "r150": { "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" }, "r151": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21553-112644" }, "r152": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r153": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r154": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r155": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r156": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r157": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(h)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r158": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(i)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r159": { "Name": "Accounting Standards Codification", "Paragraph": "13", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644" }, "r16": { "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" }, "r160": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644" }, "r161": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644" }, "r162": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644" }, "r163": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644" }, "r164": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r165": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r166": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r167": { "Name": "Accounting Standards Codification", "Paragraph": "18", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644" }, "r168": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644" }, "r169": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644" }, "r17": { "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" }, "r170": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21484-112644" }, "r171": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21488-112644" }, "r172": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21506-112644" }, "r173": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21521-112644" }, "r174": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21538-112644" }, "r175": { "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" }, "r176": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "50", "Topic": "505", "URI": "http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775" }, "r177": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "505", "URI": "http://asc.fasb.org/topic&trid=2208762" }, "r178": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(i)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r179": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(d)(ii)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r18": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.1)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r180": { "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=123447040&loc=d3e1928-114920" }, "r181": { "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=123447040&loc=d3e1928-114920" }, "r182": { "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=123447040&loc=d3e1928-114920" }, "r183": { "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=123447040&loc=d3e1928-114920" }, "r184": { "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=123447040&loc=d3e1928-114920" }, "r185": { "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=123447040&loc=d3e1928-114920" }, "r186": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "20", "Subparagraph": "(n)", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920" }, "r187": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "715", "URI": "http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921" }, "r188": { "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" }, "r189": { "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" }, "r19": { "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" }, "r190": { "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" }, "r191": { "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" }, "r192": { "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" }, "r193": { "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" }, "r194": { "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" }, "r195": { "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" }, "r196": { "Name": "Accounting Standards Codification", "Paragraph": "10B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318" }, "r197": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32247-109318" }, "r198": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32280-109318" }, "r199": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32672-109319" }, "r2": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "205", "URI": "http://asc.fasb.org/topic&trid=2122149" }, "r20": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(a)(5))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r200": { "Name": "Accounting Standards Codification", "Paragraph": "12", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319" }, "r201": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319" }, "r202": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319" }, "r203": { "Name": "Accounting Standards Codification", "Paragraph": "15A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319" }, "r204": { "Name": "Accounting Standards Codification", "Paragraph": "17", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319" }, "r205": { "Name": "Accounting Standards Codification", "Paragraph": "19", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32840-109319" }, "r206": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319" }, "r207": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319" }, "r208": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319" }, "r209": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32847-109319" }, "r21": { "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" }, "r210": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319" }, "r211": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319" }, "r212": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319" }, "r213": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319" }, "r214": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319" }, "r215": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319" }, "r216": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319" }, "r217": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(2)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r218": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(d)(3)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277" }, "r219": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB TOPIC 6.I.5.Q1)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r22": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.19(b),22(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r220": { "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=122134291&loc=d3e330036-122817" }, "r221": { "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=122134291&loc=d3e330036-122817" }, "r222": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 6.I.Fact.4)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817" }, "r223": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SAB Topic 11.C)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817" }, "r224": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "20", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324" }, "r225": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "270", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338" }, "r226": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "30", "Subparagraph": "(a)", "Topic": "740", "URI": "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331" }, "r227": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "740", "URI": "http://asc.fasb.org/topic&trid=2144680" }, "r228": { "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" }, "r229": { "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" }, "r23": { "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" }, "r230": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r231": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "810", "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685" }, "r232": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "810", "URI": "http://asc.fasb.org/topic&trid=2197479" }, "r233": { "Name": "Accounting Standards Codification", "Paragraph": "5B", "Publisher": "FASB", "Section": "25", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=107671284&loc=SL5844817-113951" }, "r234": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "35", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515679&loc=d3e40733-113955" }, "r235": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579240-113959" }, "r236": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959" }, "r237": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41620-113959" }, "r238": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41638-113959" }, "r239": { "Name": "Accounting Standards Codification", "Paragraph": "4C", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(e)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959" }, "r24": { "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" }, "r240": { "Name": "Accounting Standards Codification", "Paragraph": "4CC", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959" }, "r241": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41675-113959" }, "r242": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "25", "SubTopic": "15", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123589689&loc=d3e48542-113965" }, "r243": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "35", "SubTopic": "15", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=56949186&loc=d3e50579-113967" }, "r244": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(3)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r245": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)(4)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r246": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)", "Topic": "815", "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011" }, "r247": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "815", "URI": "http://asc.fasb.org/topic&trid=2229140" }, "r248": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r249": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r25": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.21)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r250": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r251": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r252": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r253": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(bbb)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r254": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r255": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(1)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r256": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(2)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r257": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)(3)", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r258": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258" }, "r259": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258" }, "r26": { "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" }, "r260": { "Name": "Accounting Standards Codification", "Paragraph": "6A", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=SL6742756-110258" }, "r261": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "60", "SubTopic": "10", "Topic": "820", "URI": "http://asc.fasb.org/extlink&oid=7493716&loc=d3e21868-110260" }, "r262": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "820", "URI": "http://asc.fasb.org/topic&trid=2155941" }, "r263": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13279-108611" }, "r264": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611" }, "r265": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(f)", "Topic": "825", "URI": "http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612" }, "r266": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "230", "Topic": "830", "URI": "http://asc.fasb.org/extlink&oid=123444420&loc=d3e33268-110906" }, "r267": { "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" }, "r268": { "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" }, "r269": { "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" }, "r27": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.28,29)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r270": { "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" }, "r271": { "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" }, "r272": { "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" }, "r273": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r274": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r275": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r276": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r277": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864" }, "r278": { "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" }, "r279": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864" }, "r28": { "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" }, "r280": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "850", "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864" }, "r281": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "850", "URI": "http://asc.fasb.org/topic&trid=2122745" }, "r282": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765" }, "r283": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765" }, "r284": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "852", "URI": "http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766" }, "r285": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "855", "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662" }, "r286": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "855", "URI": "http://asc.fasb.org/topic&trid=2122774" }, "r287": { "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" }, "r288": { "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" }, "r289": { "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" }, "r29": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02.9)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r290": { "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" }, "r291": { "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" }, "r292": { "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" }, "r293": { "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" }, "r294": { "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" }, "r295": { "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" }, "r296": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "910", "URI": "http://asc.fasb.org/extlink&oid=123353855&loc=SL119991595-234733" }, "r297": { "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" }, "r298": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61929-109447" }, "r299": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61929-109447" }, "r3": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(g)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r30": { "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" }, "r300": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62059-109447" }, "r301": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62059-109447" }, "r302": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62395-109447" }, "r303": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62395-109447" }, "r304": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62479-109447" }, "r305": { "Name": "Accounting Standards Codification", "Paragraph": "33", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e62479-109447" }, "r306": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(a)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447" }, "r307": { "Name": "Accounting Standards Codification", "Paragraph": "35A", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(b)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=SL6807758-109447" }, "r308": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(1)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61872-109447" }, "r309": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "235", "Subparagraph": "(c)(2)", "Topic": "932", "URI": "http://asc.fasb.org/extlink&oid=123377692&loc=d3e61872-109447" }, "r31": { "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" }, "r310": { "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" }, "r311": { "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" }, "r312": { "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" }, "r313": { "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" }, "r314": { "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" }, "r315": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "825", "Topic": "942", "URI": "http://asc.fasb.org/extlink&oid=123345438&loc=d3e61044-112788" }, "r316": { "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" }, "r317": { "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" }, "r318": { "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" }, "r319": { "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" }, "r32": { "Name": "Accounting Standards Codification", "Paragraph": "22", "Publisher": "FASB", "Section": "55", "SubTopic": "20", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313" }, "r320": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "210", "Subparagraph": "(SX 210.7-03.17)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910" }, "r321": { "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" }, "r322": { "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" }, "r323": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "220", "Subparagraph": "(SX 210.7-04(3)(b))", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263" }, "r324": { "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" }, "r325": { "Name": "Accounting Standards Codification", "Paragraph": "7A", "Publisher": "FASB", "Section": "50", "SubTopic": "40", "Subparagraph": "(d)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124506351&loc=SL117782755-158439" }, "r326": { "Name": "Accounting Standards Codification", "Paragraph": "29F", "Publisher": "FASB", "Section": "55", "SubTopic": "40", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117819544-158441" }, "r327": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(e)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r328": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(1)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r329": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(f)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r33": { "Name": "Accounting Standards Codification", "Paragraph": "1A", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580" }, "r330": { "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=124501264&loc=SL117420844-207641" }, "r331": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "40", "Subparagraph": "(h)(2)", "Topic": "944", "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641" }, "r332": { "Name": "Accounting Standards Codification", "Paragraph": "20", "Publisher": "FASB", "Section": "45", "SubTopic": "210", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840" }, "r333": { "Name": "Accounting Standards Codification", "Paragraph": "21", "Publisher": "FASB", "Section": "45", "SubTopic": "210", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840" }, "r334": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "220", "Subparagraph": "(k)", "Topic": "946", "URI": "http://asc.fasb.org/extlink&oid=124433917&loc=SL114874205-224268" }, "r335": { "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" }, "r336": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "440", "Subparagraph": "(a)", "Topic": "954", "URI": "http://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629" }, "r337": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(c)", "Topic": "976", "URI": "http://asc.fasb.org/extlink&oid=6497875&loc=d3e22274-108663" }, "r338": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "310", "Subparagraph": "(b)", "Topic": "978", "URI": "http://asc.fasb.org/extlink&oid=123360121&loc=d3e27327-108691" }, "r339": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b" }, "r34": { "Name": "Accounting Standards Codification", "Paragraph": "1B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580" }, "r340": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "b-2" }, "r341": { "Name": "Exchange Act", "Number": "240", "Publisher": "SEC", "Section": "12", "Subsection": "d1-1" }, "r342": { "Name": "Form 10-K", "Number": "249", "Publisher": "SEC", "Section": "310" }, "r343": { "Name": "Form 20-F", "Number": "249", "Publisher": "SEC", "Section": "220", "Subsection": "f" }, "r344": { "Name": "Form 40-F", "Number": "249", "Publisher": "SEC", "Section": "240", "Subsection": "f" }, "r345": { "Name": "Forms 10-K, 10-Q, 20-F", "Number": "240", "Publisher": "SEC", "Section": "13", "Subsection": "a-1" }, "r346": { "Name": "Regulation S-K (SK)", "Number": "229", "Paragraph": "(a)", "Publisher": "SEC", "Section": "1402" }, "r347": { "Name": "Regulation S-T", "Number": "232", "Publisher": "SEC", "Section": "405" }, "r348": { "Name": "Securities Act", "Number": "230", "Publisher": "SEC", "Section": "405" }, "r349": { "Name": "Securities Act", "Number": "7A", "Publisher": "SEC", "Section": "B", "Subsection": "2" }, "r35": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL116659661-227067" }, "r350": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "65", "SubTopic": "10", "Subparagraph": "(a)(3)(iii)(03)", "Topic": "848" }, "r36": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067" }, "r37": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067" }, "r38": { "Name": "Accounting Standards Codification", "Paragraph": "6", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067" }, "r39": { "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=123367319&loc=SL114868664-224227" }, "r4": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765" }, "r40": { "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=123367319&loc=SL114868664-224227" }, "r41": { "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=123367319&loc=SL114868664-224227" }, "r42": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7(b))", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r43": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-03.7)", "Topic": "220", "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227" }, "r44": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585" }, "r45": { "Name": "Accounting Standards Codification", "Paragraph": "14", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585" }, "r46": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585" }, "r47": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585" }, "r48": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585" }, "r49": { "Name": "Accounting Standards Codification", "Paragraph": "25", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585" }, "r5": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6787-107765" }, "r50": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r51": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r52": { "Name": "Accounting Standards Codification", "Paragraph": "28", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585" }, "r53": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585" }, "r54": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4273-108586" }, "r55": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "230", "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586" }, "r56": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(b))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r57": { "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" }, "r58": { "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" }, "r59": { "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" }, "r6": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6801-107765" }, "r60": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h)(1)(Note 1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r61": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(h)(2))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r62": { "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" }, "r63": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(k)(1))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r64": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.4-08(n))", "Topic": "235", "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690" }, "r65": { "Name": "Accounting Standards Codification", "Publisher": "FASB", "Topic": "235", "URI": "http://asc.fasb.org/topic&trid=2122369" }, "r66": { "Name": "Accounting Standards Codification", "Paragraph": "23", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793" }, "r67": { "Name": "Accounting Standards Codification", "Paragraph": "24", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793" }, "r68": { "Name": "Accounting Standards Codification", "Paragraph": "5", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793" }, "r69": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(2)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r7": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(27)", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r70": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)(3)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794" }, "r71": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794" }, "r72": { "Name": "Accounting Standards Codification", "Paragraph": "11", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794" }, "r73": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794" }, "r74": { "Name": "Accounting Standards Codification", "Paragraph": "4", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794" }, "r75": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794" }, "r76": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794" }, "r77": { "Name": "Accounting Standards Codification", "Paragraph": "8", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794" }, "r78": { "Name": "Accounting Standards Codification", "Paragraph": "9", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "250", "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794" }, "r79": { "Name": "Accounting Standards Codification", "Paragraph": "10", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1448-109256" }, "r8": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(1))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r80": { "Name": "Accounting Standards Codification", "Paragraph": "16", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1505-109256" }, "r81": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1252-109256" }, "r82": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1278-109256" }, "r83": { "Name": "Accounting Standards Codification", "Paragraph": "55", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e2626-109256" }, "r84": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256" }, "r85": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(b)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256" }, "r86": { "Name": "Accounting Standards Codification", "Paragraph": "60B", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Subparagraph": "(d)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256" }, "r87": { "Name": "Accounting Standards Codification", "Paragraph": "66", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e2814-109256" }, "r88": { "Name": "Accounting Standards Codification", "Paragraph": "7", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1337-109256" }, "r89": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(a)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257" }, "r9": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "S99", "SubTopic": "10", "Subparagraph": "(SX 210.5-02(27)(b))", "Topic": "210", "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682" }, "r90": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Subparagraph": "(c)", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257" }, "r91": { "Name": "Accounting Standards Codification", "Paragraph": "2", "Publisher": "FASB", "Section": "50", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257" }, "r92": { "Name": "Accounting Standards Codification", "Paragraph": "15", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125512782&loc=d3e3842-109258" }, "r93": { "Name": "Accounting Standards Codification", "Paragraph": "52", "Publisher": "FASB", "Section": "55", "SubTopic": "10", "Topic": "260", "URI": "http://asc.fasb.org/extlink&oid=125512782&loc=d3e4984-109258" }, "r94": { "Name": "Accounting Standards Codification", "Paragraph": "1", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70191-108054" }, "r95": { "Name": "Accounting Standards Codification", "Paragraph": "3", "Publisher": "FASB", "Section": "45", "SubTopic": "10", "Topic": "272", "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70229-108054" }, "r96": { "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" }, "r97": { "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" }, "r98": { "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" }, "r99": { "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" } }, "version": "2.1" }