3.22.0.1 html 368 544 1 false 72 0 false 9 false false R1.htm 0001001 - Document - Cover Sheet http://www.redriverbank.net/role/Cover Cover Cover 1 false false R2.htm 0002002 - Document - Audit Information Sheet http://www.redriverbank.net/role/AuditInformation Audit Information Notes 2 false false R3.htm 1001003 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.redriverbank.net/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Uncategorized 3 false false R4.htm 1002004 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.redriverbank.net/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Cover 4 false false R5.htm 1003005 - Statement - CONSOLIDATED STATEMENTS OF INCOME Sheet http://www.redriverbank.net/role/CONSOLIDATEDSTATEMENTSOFINCOME CONSOLIDATED STATEMENTS OF INCOME Statements 5 false false R6.htm 1004006 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.redriverbank.net/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 6 false false R7.htm 1005007 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Sheet http://www.redriverbank.net/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Statements 7 false false R8.htm 1006008 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) Sheet http://www.redriverbank.net/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYParenthetical CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) Statements 8 false false R9.htm 1007009 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.redriverbank.net/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 9 false false R10.htm 2101101 - Disclosure - Business and Summary of Significant Accounting Policies Sheet http://www.redriverbank.net/role/BusinessandSummaryofSignificantAccountingPolicies Business and Summary of Significant Accounting Policies Notes 10 false false R11.htm 2104102 - Disclosure - Securities Sheet http://www.redriverbank.net/role/Securities Securities Notes 11 false false R12.htm 2111103 - Disclosure - Loans and Asset Quality Sheet http://www.redriverbank.net/role/LoansandAssetQuality Loans and Asset Quality Notes 12 false false R13.htm 2123104 - Disclosure - Premises and Equipment, Net Sheet http://www.redriverbank.net/role/PremisesandEquipmentNet Premises and Equipment, Net Notes 13 false false R14.htm 2127105 - Disclosure - Deposits Sheet http://www.redriverbank.net/role/Deposits Deposits Notes 14 false false R15.htm 2132106 - Disclosure - Other Borrowed Funds Sheet http://www.redriverbank.net/role/OtherBorrowedFunds Other Borrowed Funds Notes 15 false false R16.htm 2134107 - Disclosure - Leases Sheet http://www.redriverbank.net/role/Leases Leases Notes 16 false false R17.htm 2139108 - Disclosure - Income Tax Expense Sheet http://www.redriverbank.net/role/IncomeTaxExpense Income Tax Expense Notes 17 false false R18.htm 2144109 - Disclosure - Employee Benefits Sheet http://www.redriverbank.net/role/EmployeeBenefits Employee Benefits Notes 18 false false R19.htm 2146110 - Disclosure - Stock-Based Compensation Plans Sheet http://www.redriverbank.net/role/StockBasedCompensationPlans Stock-Based Compensation Plans Notes 19 false false R20.htm 2153111 - Disclosure - Self-Insurance Sheet http://www.redriverbank.net/role/SelfInsurance Self-Insurance Notes 20 false false R21.htm 2155112 - Disclosure - Off-Balance Sheet Contractual Obligations and Contingencies Sheet http://www.redriverbank.net/role/OffBalanceSheetContractualObligationsandContingencies Off-Balance Sheet Contractual Obligations and Contingencies Notes 21 false false R22.htm 2157113 - Disclosure - Fair Value Sheet http://www.redriverbank.net/role/FairValue Fair Value Notes 22 false false R23.htm 2163114 - Disclosure - Regulatory Capital Requirements Sheet http://www.redriverbank.net/role/RegulatoryCapitalRequirements Regulatory Capital Requirements Notes 23 false false R24.htm 2166115 - Disclosure - Equity Events Sheet http://www.redriverbank.net/role/EquityEvents Equity Events Notes 24 false false R25.htm 2168116 - Disclosure - Earnings Per Common Share Sheet http://www.redriverbank.net/role/EarningsPerCommonShare Earnings Per Common Share Notes 25 false false R26.htm 2171117 - Disclosure - Quarterly Results of Operations (Unaudited) Sheet http://www.redriverbank.net/role/QuarterlyResultsofOperationsUnaudited Quarterly Results of Operations (Unaudited) Notes 26 false false R27.htm 2174118 - Disclosure - Parent Company Financial Statements Sheet http://www.redriverbank.net/role/ParentCompanyFinancialStatements Parent Company Financial Statements Notes 27 false false R28.htm 2202201 - Disclosure - Business and Summary of Significant Accounting Policies (Policies) Sheet http://www.redriverbank.net/role/BusinessandSummaryofSignificantAccountingPoliciesPolicies Business and Summary of Significant Accounting Policies (Policies) Policies http://www.redriverbank.net/role/BusinessandSummaryofSignificantAccountingPolicies 28 false false R29.htm 2305301 - Disclosure - Securities (Tables) Sheet http://www.redriverbank.net/role/SecuritiesTables Securities (Tables) Tables http://www.redriverbank.net/role/Securities 29 false false R30.htm 2312302 - Disclosure - Loans and Asset Quality (Tables) Sheet http://www.redriverbank.net/role/LoansandAssetQualityTables Loans and Asset Quality (Tables) Tables http://www.redriverbank.net/role/LoansandAssetQuality 30 false false R31.htm 2324303 - Disclosure - Premises and Equipment, Net (Tables) Sheet http://www.redriverbank.net/role/PremisesandEquipmentNetTables Premises and Equipment, Net (Tables) Tables http://www.redriverbank.net/role/PremisesandEquipmentNet 31 false false R32.htm 2328304 - Disclosure - Deposits (Tables) Sheet http://www.redriverbank.net/role/DepositsTables Deposits (Tables) Tables http://www.redriverbank.net/role/Deposits 32 false false R33.htm 2335305 - Disclosure - Leases (Tables) Sheet http://www.redriverbank.net/role/LeasesTables Leases (Tables) Tables http://www.redriverbank.net/role/Leases 33 false false R34.htm 2340306 - Disclosure - Income Tax Expense (Tables) Sheet http://www.redriverbank.net/role/IncomeTaxExpenseTables Income Tax Expense (Tables) Tables http://www.redriverbank.net/role/IncomeTaxExpense 34 false false R35.htm 2347307 - Disclosure - Stock-Based Compensation Plans (Tables) Sheet http://www.redriverbank.net/role/StockBasedCompensationPlansTables Stock-Based Compensation Plans (Tables) Tables http://www.redriverbank.net/role/StockBasedCompensationPlans 35 false false R36.htm 2358308 - Disclosure - Fair Value (Tables) Sheet http://www.redriverbank.net/role/FairValueTables Fair Value (Tables) Tables http://www.redriverbank.net/role/FairValue 36 false false R37.htm 2364309 - Disclosure - Regulatory Capital Requirements (Tables) Sheet http://www.redriverbank.net/role/RegulatoryCapitalRequirementsTables Regulatory Capital Requirements (Tables) Tables http://www.redriverbank.net/role/RegulatoryCapitalRequirements 37 false false R38.htm 2369310 - Disclosure - Earnings Per Common Share (Tables) Sheet http://www.redriverbank.net/role/EarningsPerCommonShareTables Earnings Per Common Share (Tables) Tables http://www.redriverbank.net/role/EarningsPerCommonShare 38 false false R39.htm 2372311 - Disclosure - Quarterly Results of Operations (Unaudited) (Tables) Sheet http://www.redriverbank.net/role/QuarterlyResultsofOperationsUnauditedTables Quarterly Results of Operations (Unaudited) (Tables) Tables http://www.redriverbank.net/role/QuarterlyResultsofOperationsUnaudited 39 false false R40.htm 2375312 - Disclosure - Parent Company Financial Statements (Tables) Sheet http://www.redriverbank.net/role/ParentCompanyFinancialStatementsTables Parent Company Financial Statements (Tables) Tables http://www.redriverbank.net/role/ParentCompanyFinancialStatements 40 false false R41.htm 2403401 - Disclosure - Business and Summary of Significant Accounting Policies (Details) Sheet http://www.redriverbank.net/role/BusinessandSummaryofSignificantAccountingPoliciesDetails Business and Summary of Significant Accounting Policies (Details) Details http://www.redriverbank.net/role/BusinessandSummaryofSignificantAccountingPoliciesPolicies 41 false false R42.htm 2406402 - Disclosure - Securities - Narrative (Details) Sheet http://www.redriverbank.net/role/SecuritiesNarrativeDetails Securities - Narrative (Details) Details 42 false false R43.htm 2407403 - Disclosure - Securities - Schedule of Amortized Cost and Fair Value (Details) Sheet http://www.redriverbank.net/role/SecuritiesScheduleofAmortizedCostandFairValueDetails Securities - Schedule of Amortized Cost and Fair Value (Details) Details 43 false false R44.htm 2408404 - Disclosure - Securities - Schedule of AFS Debt Securities, By Maturity Date (Details) Sheet http://www.redriverbank.net/role/SecuritiesScheduleofAFSDebtSecuritiesByMaturityDateDetails Securities - Schedule of AFS Debt Securities, By Maturity Date (Details) Details 44 false false R45.htm 2409405 - Disclosure - Securities - Schedule of Securities With Gross Unrealized Losses (Details) Sheet http://www.redriverbank.net/role/SecuritiesScheduleofSecuritiesWithGrossUnrealizedLossesDetails Securities - Schedule of Securities With Gross Unrealized Losses (Details) Details 45 false false R46.htm 2410406 - Disclosure - Securities - Schedule of Proceeds from Sales of Securities AFS and Gross Gain (Loss) (Details) Sheet http://www.redriverbank.net/role/SecuritiesScheduleofProceedsfromSalesofSecuritiesAFSandGrossGainLossDetails Securities - Schedule of Proceeds from Sales of Securities AFS and Gross Gain (Loss) (Details) Details 46 false false R47.htm 2413407 - Disclosure - Loans and Asset Quality - Total Loans Held for Investment by Category and Loans Held for Sale (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityTotalLoansHeldforInvestmentbyCategoryandLoansHeldforSaleDetails Loans and Asset Quality - Total Loans Held for Investment by Category and Loans Held for Sale (Details) Details 47 false false R48.htm 2414408 - Disclosure - Loans and Asset Quality - Narrative (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityNarrativeDetails Loans and Asset Quality - Narrative (Details) Details 48 false false R49.htm 2415409 - Disclosure - Loans and Asset Quality - Schedule of Related Party Transactions (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofRelatedPartyTransactionsDetails Loans and Asset Quality - Schedule of Related Party Transactions (Details) Details 49 false false R50.htm 2416410 - Disclosure - Loans and Asset Quality - Schedule of Allowance of Loan Losses By Category (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofAllowanceofLoanLossesByCategoryDetails Loans and Asset Quality - Schedule of Allowance of Loan Losses By Category (Details) Details 50 false false R51.htm 2417411 - Disclosure - Loans and Asset Quality - Schedule of Allowance for Loan Losses and the Related Recorded Investment in Loans by Category (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofAllowanceforLoanLossesandtheRelatedRecordedInvestmentinLoansbyCategoryDetails Loans and Asset Quality - Schedule of Allowance for Loan Losses and the Related Recorded Investment in Loans by Category (Details) Details 51 false false R52.htm 2418412 - Disclosure - Loans and Asset Quality - Schedule of Current, Past Due, and Nonaccrual Loans (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofCurrentPastDueandNonaccrualLoansDetails Loans and Asset Quality - Schedule of Current, Past Due, and Nonaccrual Loans (Details) Details 52 false false R53.htm 2419413 - Disclosure - Loans and Asset Quality - Schedule of Loans Impaired (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofLoansImpairedDetails Loans and Asset Quality - Schedule of Loans Impaired (Details) Details 53 false false R54.htm 2420414 - Disclosure - Loans and Asset Quality - Schedule of Current, Past Due, and Nonaccrual TDR Loans (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofCurrentPastDueandNonaccrualTDRLoansDetails Loans and Asset Quality - Schedule of Current, Past Due, and Nonaccrual TDR Loans (Details) Details 54 false false R55.htm 2421415 - Disclosure - Loans and Asset Quality - Schedule of Loans Modified as TDRs That Occurred During Period (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofLoansModifiedasTDRsThatOccurredDuringPeriodDetails Loans and Asset Quality - Schedule of Loans Modified as TDRs That Occurred During Period (Details) Details 55 false false R56.htm 2422416 - Disclosure - Loans and Asset Quality - Schedule of Loans by Risk Rating (Details) Sheet http://www.redriverbank.net/role/LoansandAssetQualityScheduleofLoansbyRiskRatingDetails Loans and Asset Quality - Schedule of Loans by Risk Rating (Details) Details 56 false false R57.htm 2425417 - Disclosure - Premises and Equipment, Net - Schedule of Components of Premises and Equipment (Details) Sheet http://www.redriverbank.net/role/PremisesandEquipmentNetScheduleofComponentsofPremisesandEquipmentDetails Premises and Equipment, Net - Schedule of Components of Premises and Equipment (Details) Details 57 false false R58.htm 2426418 - Disclosure - Premises and Equipment, Net - Narrative (Details) Sheet http://www.redriverbank.net/role/PremisesandEquipmentNetNarrativeDetails Premises and Equipment, Net - Narrative (Details) Details 58 false false R59.htm 2429419 - Disclosure - Deposits - Narrative (Details) Sheet http://www.redriverbank.net/role/DepositsNarrativeDetails Deposits - Narrative (Details) Details 59 false false R60.htm 2430420 - Disclosure - Deposits - Schedule of Deposits (Details) Sheet http://www.redriverbank.net/role/DepositsScheduleofDepositsDetails Deposits - Schedule of Deposits (Details) Details 60 false false R61.htm 2431421 - Disclosure - Deposits - Schedule of Maturities of Outstanding Certificates of Deposit (Details) Sheet http://www.redriverbank.net/role/DepositsScheduleofMaturitiesofOutstandingCertificatesofDepositDetails Deposits - Schedule of Maturities of Outstanding Certificates of Deposit (Details) Details 61 false false R62.htm 2433422 - Disclosure - Other Borrowed Funds (Details) Sheet http://www.redriverbank.net/role/OtherBorrowedFundsDetails Other Borrowed Funds (Details) Details http://www.redriverbank.net/role/OtherBorrowedFunds 62 false false R63.htm 2436423 - Disclosure - Leases - Narrative (Details) Sheet http://www.redriverbank.net/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 63 false false R64.htm 2437424 - Disclosure - Leases - Operating Lease Information (Details) Sheet http://www.redriverbank.net/role/LeasesOperatingLeaseInformationDetails Leases - Operating Lease Information (Details) Details 64 false false R65.htm 2438425 - Disclosure - Leases - Lease Maturity (Details) Sheet http://www.redriverbank.net/role/LeasesLeaseMaturityDetails Leases - Lease Maturity (Details) Details 65 false false R66.htm 2441426 - Disclosure - Income Tax Expense - Schedule of Components of Income Tax Expense (Details) Sheet http://www.redriverbank.net/role/IncomeTaxExpenseScheduleofComponentsofIncomeTaxExpenseDetails Income Tax Expense - Schedule of Components of Income Tax Expense (Details) Details 66 false false R67.htm 2442427 - Disclosure - Income Tax Expense - Schedule of Components of Effective Income Tax Reconciliation (Details) Sheet http://www.redriverbank.net/role/IncomeTaxExpenseScheduleofComponentsofEffectiveIncomeTaxReconciliationDetails Income Tax Expense - Schedule of Components of Effective Income Tax Reconciliation (Details) Details 67 false false R68.htm 2443428 - Disclosure - Income Tax Expense - Schedule of Deferred Tax Assets (Liabilities) (Details) Sheet http://www.redriverbank.net/role/IncomeTaxExpenseScheduleofDeferredTaxAssetsLiabilitiesDetails Income Tax Expense - Schedule of Deferred Tax Assets (Liabilities) (Details) Details 68 false false R69.htm 2445429 - Disclosure - Employee Benefits (Details) Sheet http://www.redriverbank.net/role/EmployeeBenefitsDetails Employee Benefits (Details) Details http://www.redriverbank.net/role/EmployeeBenefits 69 false false R70.htm 2448430 - Disclosure - Stock-Based Compensation Plans - Narrative (Details) Sheet http://www.redriverbank.net/role/StockBasedCompensationPlansNarrativeDetails Stock-Based Compensation Plans - Narrative (Details) Details 70 false false R71.htm 2449431 - Disclosure - Stock-Based Compensation Plans - Equity Incentive Plan (Details) Sheet http://www.redriverbank.net/role/StockBasedCompensationPlansEquityIncentivePlanDetails Stock-Based Compensation Plans - Equity Incentive Plan (Details) Details 71 false false R72.htm 2450432 - Disclosure - Stock-Based Compensation Plans - Schedule of Stock Option Plan (Details) Sheet http://www.redriverbank.net/role/StockBasedCompensationPlansScheduleofStockOptionPlanDetails Stock-Based Compensation Plans - Schedule of Stock Option Plan (Details) Details 72 false false R73.htm 2451433 - Disclosure - Stock-Based Compensation Plans - Schedule of Nonvested Restricted Stock (Details) Sheet http://www.redriverbank.net/role/StockBasedCompensationPlansScheduleofNonvestedRestrictedStockDetails Stock-Based Compensation Plans - Schedule of Nonvested Restricted Stock (Details) Details 73 false false R74.htm 2452434 - Disclosure - Stock-Based Compensation Plans - Schedule of Director Compensation Program (Details) Sheet http://www.redriverbank.net/role/StockBasedCompensationPlansScheduleofDirectorCompensationProgramDetails Stock-Based Compensation Plans - Schedule of Director Compensation Program (Details) Details 74 false false R75.htm 2454435 - Disclosure - Self-Insurance (Details) Sheet http://www.redriverbank.net/role/SelfInsuranceDetails Self-Insurance (Details) Details http://www.redriverbank.net/role/SelfInsurance 75 false false R76.htm 2456436 - Disclosure - Off-Balance Sheet Contractual Obligations and Contingencies (Details) Sheet http://www.redriverbank.net/role/OffBalanceSheetContractualObligationsandContingenciesDetails Off-Balance Sheet Contractual Obligations and Contingencies (Details) Details http://www.redriverbank.net/role/OffBalanceSheetContractualObligationsandContingencies 76 false false R77.htm 2459437 - Disclosure - Fair Value - Assets Measured on Recurring Basis (Details) Sheet http://www.redriverbank.net/role/FairValueAssetsMeasuredonRecurringBasisDetails Fair Value - Assets Measured on Recurring Basis (Details) Details 77 false false R78.htm 2460438 - Disclosure - Fair Value - Assets Measured on Nonrecurring Basis (Details) Sheet http://www.redriverbank.net/role/FairValueAssetsMeasuredonNonrecurringBasisDetails Fair Value - Assets Measured on Nonrecurring Basis (Details) Details 78 false false R79.htm 2461439 - Disclosure - Fair Value - Unobservable Inputs Used for the Level 3 (Details) Sheet http://www.redriverbank.net/role/FairValueUnobservableInputsUsedfortheLevel3Details Fair Value - Unobservable Inputs Used for the Level 3 (Details) Details 79 false false R80.htm 2462440 - Disclosure - Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) Sheet http://www.redriverbank.net/role/FairValueCarryingAmountsandEstimatedFairValuesofFinancialInstrumentsDetails Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) Details 80 false false R81.htm 2465441 - Disclosure - Regulatory Capital Requirements - Schedule of Regulatory Requirements (Details) Sheet http://www.redriverbank.net/role/RegulatoryCapitalRequirementsScheduleofRegulatoryRequirementsDetails Regulatory Capital Requirements - Schedule of Regulatory Requirements (Details) Details 81 false false R82.htm 2467442 - Disclosure - Equity Events (Details) Sheet http://www.redriverbank.net/role/EquityEventsDetails Equity Events (Details) Details http://www.redriverbank.net/role/EquityEvents 82 false false R83.htm 2470443 - Disclosure - Earnings Per Common Share (Details) Sheet http://www.redriverbank.net/role/EarningsPerCommonShareDetails Earnings Per Common Share (Details) Details http://www.redriverbank.net/role/EarningsPerCommonShareTables 83 false false R84.htm 2473444 - Disclosure - Quarterly Results of Operations (Unaudited) (Details) Sheet http://www.redriverbank.net/role/QuarterlyResultsofOperationsUnauditedDetails Quarterly Results of Operations (Unaudited) (Details) Details http://www.redriverbank.net/role/QuarterlyResultsofOperationsUnauditedTables 84 false false R85.htm 2476445 - Disclosure - Parent Company Financial Statements - Schedule of Condensed Balance Sheets (Details) Sheet http://www.redriverbank.net/role/ParentCompanyFinancialStatementsScheduleofCondensedBalanceSheetsDetails Parent Company Financial Statements - Schedule of Condensed Balance Sheets (Details) Details 85 false false R86.htm 2477446 - Disclosure - Parent Company Financial Statements - Schedule of Condensed Balance Sheets (Additional Information) (Details) Sheet http://www.redriverbank.net/role/ParentCompanyFinancialStatementsScheduleofCondensedBalanceSheetsAdditionalInformationDetails Parent Company Financial Statements - Schedule of Condensed Balance Sheets (Additional Information) (Details) Details 86 false false R87.htm 2478447 - Disclosure - Parent Company Financial Statements - Schedule of Condensed Statements of Income (Details) Sheet http://www.redriverbank.net/role/ParentCompanyFinancialStatementsScheduleofCondensedStatementsofIncomeDetails Parent Company Financial Statements - Schedule of Condensed Statements of Income (Details) Details 87 false false R88.htm 2479448 - Disclosure - Parent Company Financial Statements - Schedule of Condensed Statements of Cash Flows (Details) Sheet http://www.redriverbank.net/role/ParentCompanyFinancialStatementsScheduleofCondensedStatementsofCashFlowsDetails Parent Company Financial Statements - Schedule of Condensed Statements of Cash Flows (Details) Details 88 false false All Reports Book All Reports rrbi-20211231.htm rrbi-20211231.xsd rrbi-20211231_cal.xml rrbi-20211231_def.xml rrbi-20211231_lab.xml rrbi-20211231_pre.xml rrbiexhibit1030q4202110-k.htm rrbiexhibit211202110-k.htm rrbiexhibit231202110-k.htm rrbiexhibit311q42021.htm rrbiexhibit312q42021.htm rrbiexhibit321q42021.htm rrbiexhibit322q42021.htm http://fasb.org/srt/2021-01-31 http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true