3.25.2 html 353 326 1 true 55 0 false 4 false false R1.htm 0000001 - Document - Document and Entity Information Document Sheet http://www.carverbank.com/role/DocumentandEntityInformationDocument Document and Entity Information Document Cover 1 false false R2.htm 9952151 - Document - Cover Page Sheet http://www.carverbank.com/role/CoverPage Cover Page Cover 2 false false R3.htm 9952152 - Statement - Consolidated Statements of Financial Condition Sheet http://www.carverbank.com/role/ConsolidatedStatementsofFinancialCondition Consolidated Statements of Financial Condition Statements 3 false false R4.htm 9952153 - Statement - Consolidated Statements of Financial Condition Parentheticals Sheet http://www.carverbank.com/role/ConsolidatedStatementsofFinancialConditionParentheticals Consolidated Statements of Financial Condition Parentheticals Statements 4 false false R5.htm 9952154 - Statement - Consolidated Statements of Operations Sheet http://www.carverbank.com/role/ConsolidatedStatementsofOperations Consolidated Statements of Operations Statements 5 false false R6.htm 9952155 - Statement - Consolidated Statements of Comprehensive Loss Statement Sheet http://www.carverbank.com/role/ConsolidatedStatementsofComprehensiveLossStatement Consolidated Statements of Comprehensive Loss Statement Statements 6 false false R7.htm 9952156 - Statement - Consolidated Statement of Changes in Stockholders' Equity Sheet http://www.carverbank.com/role/ConsolidatedStatementofChangesinStockholdersEquity Consolidated Statement of Changes in Stockholders' Equity Statements 7 false false R8.htm 9952157 - Statement - Consolidated Statements of Cash Flows Sheet http://www.carverbank.com/role/ConsolidatedStatementsofCashFlows Consolidated Statements of Cash Flows Statements 8 false false R9.htm 9952158 - Disclosure - Organization Sheet http://www.carverbank.com/role/Organization Organization Notes 9 false false R10.htm 9952159 - Disclosure - Earnings Per Common Share Sheet http://www.carverbank.com/role/EarningsPerCommonShare Earnings Per Common Share Notes 10 false false R11.htm 9952160 - Disclosure - Common Stock Dividends and Issuances Sheet http://www.carverbank.com/role/CommonStockDividendsandIssuances Common Stock Dividends and Issuances Notes 11 false false R12.htm 9952161 - Disclosure - Other Comprehensive Income (Loss) Sheet http://www.carverbank.com/role/OtherComprehensiveIncomeLoss Other Comprehensive Income (Loss) Notes 12 false false R13.htm 9952162 - Disclosure - Investment Securities Sheet http://www.carverbank.com/role/InvestmentSecurities Investment Securities Notes 13 false false R14.htm 9952163 - Disclosure - Loans Receivable and Allowance for Credit Losses Sheet http://www.carverbank.com/role/LoansReceivableandAllowanceforCreditLosses Loans Receivable and Allowance for Credit Losses Notes 14 false false R15.htm 9952164 - Disclosure - Commitment and Contingencies Sheet http://www.carverbank.com/role/CommitmentandContingencies Commitment and Contingencies Notes 15 false false R16.htm 9952165 - Disclosure - Fair Value Measurements Sheet http://www.carverbank.com/role/FairValueMeasurements Fair Value Measurements Notes 16 false false R17.htm 9952166 - Disclosure - Fair Value of Financial Instruments Sheet http://www.carverbank.com/role/FairValueofFinancialInstruments Fair Value of Financial Instruments Notes 17 false false R18.htm 9952167 - Disclosure - Non-interest Revenue and Expense Sheet http://www.carverbank.com/role/NoninterestRevenueandExpense Non-interest Revenue and Expense Notes 18 false false R19.htm 9952168 - Disclosure - Leases Sheet http://www.carverbank.com/role/Leases Leases Notes 19 false false R20.htm 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.carverbank.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies 20 false false R21.htm 9955512 - Disclosure - Earnings Per Common Share (Tables) Sheet http://www.carverbank.com/role/EarningsPerCommonShareTables Earnings Per Common Share (Tables) Tables http://www.carverbank.com/role/EarningsPerCommonShare 21 false false R22.htm 9955513 - Disclosure - Other Comprehensive Income (Loss) (Tables) Sheet http://www.carverbank.com/role/OtherComprehensiveIncomeLossTables Other Comprehensive Income (Loss) (Tables) Tables http://www.carverbank.com/role/OtherComprehensiveIncomeLoss 22 false false R23.htm 9955514 - Disclosure - Investment Securities (Tables) Sheet http://www.carverbank.com/role/InvestmentSecuritiesTables Investment Securities (Tables) Tables http://www.carverbank.com/role/InvestmentSecurities 23 false false R24.htm 9955515 - Disclosure - Loans Receivable and ACL (Tables) Sheet http://www.carverbank.com/role/LoansReceivableandACLTables Loans Receivable and ACL (Tables) Tables http://www.carverbank.com/role/LoansReceivableandAllowanceforCreditLosses 24 false false R25.htm 9955516 - Disclosure - Commitment and Contingencies (Tables) Sheet http://www.carverbank.com/role/CommitmentandContingenciesTables Commitment and Contingencies (Tables) Tables http://www.carverbank.com/role/CommitmentandContingencies 25 false false R26.htm 9955517 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.carverbank.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.carverbank.com/role/FairValueMeasurements 26 false false R27.htm 9955518 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.carverbank.com/role/FairValueofFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://www.carverbank.com/role/FairValueofFinancialInstruments 27 false false R28.htm 9955519 - Disclosure - Non-interest Revenue and Expense (Tables) Sheet http://www.carverbank.com/role/NoninterestRevenueandExpenseTables Non-interest Revenue and Expense (Tables) Tables http://www.carverbank.com/role/NoninterestRevenueandExpense 28 false false R29.htm 9955520 - Disclosure - Leases (Tables) Sheet http://www.carverbank.com/role/LeasesTables Leases (Tables) Tables http://www.carverbank.com/role/Leases 29 false false R30.htm 9955521 - Disclosure - Organization Text Tags (Details) Sheet http://www.carverbank.com/role/OrganizationTextTagsDetails Organization Text Tags (Details) Details 30 false false R31.htm 9955522 - Disclosure - Summary of Significant Accounting Policies Text Tags (Details) Sheet http://www.carverbank.com/role/SummaryofSignificantAccountingPoliciesTextTagsDetails Summary of Significant Accounting Policies Text Tags (Details) Details http://www.carverbank.com/role/SummaryofSignificantAccountingPoliciesPolicies 31 false false R32.htm 9955523 - Disclosure - Earnings Per Common Share (Details) Sheet http://www.carverbank.com/role/EarningsPerCommonShareDetails Earnings Per Common Share (Details) Details http://www.carverbank.com/role/EarningsPerCommonShareTables 32 false false R33.htm 9955524 - Disclosure - Common Stock Dividends and Issuances Text Tags (Details) Sheet http://www.carverbank.com/role/CommonStockDividendsandIssuancesTextTagsDetails Common Stock Dividends and Issuances Text Tags (Details) Details 33 false false R34.htm 9955525 - Disclosure - Components of Accumulated Other Comprehensive Income (Loss) (Details) Sheet http://www.carverbank.com/role/ComponentsofAccumulatedOtherComprehensiveIncomeLossDetails Components of Accumulated Other Comprehensive Income (Loss) (Details) Details 34 false false R35.htm 9955526 - Disclosure - Other Comprehensive Income (Loss) (Details) Text Tags Sheet http://www.carverbank.com/role/OtherComprehensiveIncomeLossDetailsTextTags Other Comprehensive Income (Loss) (Details) Text Tags Details http://www.carverbank.com/role/OtherComprehensiveIncomeLossTables 35 false false R36.htm 9955527 - Disclosure - Investment Securities Text Tags (Details) Sheet http://www.carverbank.com/role/InvestmentSecuritiesTextTagsDetails Investment Securities Text Tags (Details) Details 36 false false R37.htm 9955528 - Disclosure - Investment Securities-Unrealized Gain (Loss) on Investments (Details) Sheet http://www.carverbank.com/role/InvestmentSecuritiesUnrealizedGainLossonInvestmentsDetails Investment Securities-Unrealized Gain (Loss) on Investments (Details) Details 37 false false R38.htm 9955529 - Disclosure - Investment Securities-Schedule of Unrealized Loss (Details) Sheet http://www.carverbank.com/role/InvestmentSecuritiesScheduleofUnrealizedLossDetails Investment Securities-Schedule of Unrealized Loss (Details) Details 38 false false R39.htm 9955530 - Disclosure - Investment Securities-Investments Classified by Contractual Maturity Date (Details) Sheet http://www.carverbank.com/role/InvestmentSecuritiesInvestmentsClassifiedbyContractualMaturityDateDetails Investment Securities-Investments Classified by Contractual Maturity Date (Details) Details 39 false false R40.htm 9955531 - Disclosure - Loans Receivable and ACL (Details) Sheet http://www.carverbank.com/role/LoansReceivableandACLDetails Loans Receivable and ACL (Details) Details http://www.carverbank.com/role/LoansReceivableandACLTables 40 false false R41.htm 9955532 - Disclosure - Allowance for Credit Losses (Details) Sheet http://www.carverbank.com/role/AllowanceforCreditLossesDetails Allowance for Credit Losses (Details) Details 41 false false R42.htm 9955533 - Disclosure - Nonaccrual Loans (Details) Sheet http://www.carverbank.com/role/NonaccrualLoansDetails Nonaccrual Loans (Details) Details 42 false false R43.htm 9955534 - Disclosure - Credit Quality Indicators (Details) Sheet http://www.carverbank.com/role/CreditQualityIndicatorsDetails Credit Quality Indicators (Details) Details 43 false false R44.htm 9955535 - Disclosure - Past Due Financing Receivables (Details) Sheet http://www.carverbank.com/role/PastDueFinancingReceivablesDetails Past Due Financing Receivables (Details) Details 44 false false R45.htm 9955536 - Disclosure - Collateral Dependent Loans (Details) Sheet http://www.carverbank.com/role/CollateralDependentLoansDetails Collateral Dependent Loans (Details) Details 45 false false R46.htm 9955537 - Disclosure - Loans Receivable and ACL Text Tags (Details) Sheet http://www.carverbank.com/role/LoansReceivableandACLTextTagsDetails Loans Receivable and ACL Text Tags (Details) Details 46 false false R47.htm 9955538 - Disclosure - Commitment and Contingencies (Details) Sheet http://www.carverbank.com/role/CommitmentandContingenciesDetails Commitment and Contingencies (Details) Details http://www.carverbank.com/role/CommitmentandContingenciesTables 47 false false R48.htm 9955539 - Disclosure - Commitment and Contingencies Text Tags (Details) Sheet http://www.carverbank.com/role/CommitmentandContingenciesTextTagsDetails Commitment and Contingencies Text Tags (Details) Details 48 false false R49.htm 9955540 - Disclosure - Fair Value, Assets Measured on Recurring Basis (Details) Sheet http://www.carverbank.com/role/FairValueAssetsMeasuredonRecurringBasisDetails Fair Value, Assets Measured on Recurring Basis (Details) Details 49 false false R50.htm 9955541 - Disclosure - Fair Value Measurements Text Tag (Details) Sheet http://www.carverbank.com/role/FairValueMeasurementsTextTagDetails Fair Value Measurements Text Tag (Details) Details 50 false false R51.htm 9955542 - Disclosure - Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) Sheet http://www.carverbank.com/role/FairValueAssetsMeasuredonRecurringBasisUnobservableInputReconciliationDetails Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) Details 51 false false R52.htm 9955543 - Disclosure - Fair Value, Assets Measured on Recurring Basis, Valuation Techniques (Details) Sheet http://www.carverbank.com/role/FairValueAssetsMeasuredonRecurringBasisValuationTechniquesDetails Fair Value, Assets Measured on Recurring Basis, Valuation Techniques (Details) Details 52 false false R53.htm 9955544 - Disclosure - Fair Value Measurements, Nonrecurring (Details) Sheet http://www.carverbank.com/role/FairValueMeasurementsNonrecurringDetails Fair Value Measurements, Nonrecurring (Details) Details 53 false false R54.htm 9955545 - Disclosure - Fair Value, Assets Measured on Nonrecurring Basis, Valuation Techniques (Details) Sheet http://www.carverbank.com/role/FairValueAssetsMeasuredonNonrecurringBasisValuationTechniquesDetails Fair Value, Assets Measured on Nonrecurring Basis, Valuation Techniques (Details) Details 54 false false R55.htm 9955546 - Disclosure - Fair Value of Financial Instruments (Details) Sheet http://www.carverbank.com/role/FairValueofFinancialInstrumentsDetails Fair Value of Financial Instruments (Details) Details http://www.carverbank.com/role/FairValueofFinancialInstrumentsTables 55 false false R56.htm 9955547 - Disclosure - Non-interest Revenue (Details) Sheet http://www.carverbank.com/role/NoninterestRevenueDetails Non-interest Revenue (Details) Details http://www.carverbank.com/role/NoninterestRevenueandExpenseTables 56 false false R57.htm 9955548 - Disclosure - Other Non-interest Revenue and Expense (Details) Sheet http://www.carverbank.com/role/OtherNoninterestRevenueandExpenseDetails Other Non-interest Revenue and Expense (Details) Details 57 false false R58.htm 9955549 - Disclosure - Leases Text Tags (Details) Sheet http://www.carverbank.com/role/LeasesTextTagsDetails Leases Text Tags (Details) Details 58 false false R59.htm 9955550 - Disclosure - Leases (Details) Sheet http://www.carverbank.com/role/LeasesDetails Leases (Details) Details http://www.carverbank.com/role/LeasesTables 59 false false R60.htm 9955551 - Disclosure - Leases-Lease Liability, Maturity (Details) Sheet http://www.carverbank.com/role/LeasesLeaseLiabilityMaturityDetails Leases-Lease Liability, Maturity (Details) Details 60 false false All Reports Book All Reports carv-20250630.htm carv-20250630.xsd carv-20250630_cal.xml carv-20250630_def.xml carv-20250630_lab.xml carv-20250630_pre.xml http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 true true