3.22.2.2 html 949 709 1 true 140 0 false 10 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Statements of Financial Condition Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/StatementConsolidatedStatementsOfFinancialCondition1 Consolidated Statements of Financial Condition Statements 2 false false R3.htm 100020 - Statement - Consolidated Statements of Financial Condition (Parenthetical) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfFinancialConditionParenthetical Consolidated Statements of Financial Condition (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Consolidated Statements of Income Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfIncome Consolidated Statements of Income Statements 4 false false R5.htm 100040 - Statement - Consolidated Statements of Comprehensive Income Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 100050 - Statement - Consolidated Statements of Changes in Stockholders' Equity Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfChangesInStockholdersEquity Consolidated Statements of Changes in Stockholders' Equity Statements 6 false false R7.htm 100060 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfChangesInStockholdersEquityParenthetical Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) Statements 7 false false R8.htm 100070 - Statement - Consolidated Statements of Cash Flows Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 8 false false R9.htm 100080 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 100090 - Disclosure - Recent Accounting Pronouncements Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureRecentAccountingPronouncements Recent Accounting Pronouncements Notes 10 false false R11.htm 100100 - Disclosure - Business Combination Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBusinessCombination Business Combination Notes 11 false false R12.htm 100110 - Disclosure - Securities Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecurities Securities Notes 12 false false R13.htm 100120 - Disclosure - Loans Receivable Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivable Loans Receivable Notes 13 false false R14.htm 100130 - Disclosure - Allowance for Credit Losses Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureAllowanceForCreditLosses Allowance for Credit Losses Notes 14 false false R15.htm 100140 - Disclosure - Leases Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLeases Leases Notes 15 false false R16.htm 100150 - Disclosure - Premises and Equipment Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosurePremisesAndEquipment Premises and Equipment Notes 16 false false R17.htm 100160 - Disclosure - Goodwill and Other Intangible Assets Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssets Goodwill and Other Intangible Assets Notes 17 false false R18.htm 100170 - Disclosure - Deposits Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDeposits Deposits Notes 18 false false R19.htm 100180 - Disclosure - Borrowings Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBorrowings Borrowings Notes 19 false false R20.htm 100190 - Disclosure - Derivative Instruments and Hedging Activities Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivities Derivative Instruments and Hedging Activities Notes 20 false false R21.htm 100200 - Disclosure - Benefit Plans Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlans Benefit Plans Notes 21 false false R22.htm 100210 - Disclosure - Stock Based Compensation Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockBasedCompensation Stock Based Compensation Notes 22 false false R23.htm 100220 - Disclosure - Stockholders' Equity Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockholdersEquity Stockholders' Equity Notes 23 false false R24.htm 100230 - Disclosure - Income Taxes Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxes Income Taxes Notes 24 false false R25.htm 100240 - Disclosure - Commitments Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureCommitments Commitments Notes 25 false false R26.htm 100250 - Disclosure - Fair Value of Financial Instruments Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstruments Fair Value of Financial Instruments Notes 26 false false R27.htm 100260 - Disclosure - Comprehensive Income Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureComprehensiveIncome Comprehensive Income Notes 27 false false R28.htm 100270 - Disclosure - Revenue Recognition Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureRevenueRecognition Revenue Recognition Notes 28 false false R29.htm 100280 - Disclosure - Parent Only Financial Information Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureParentOnlyFinancialInformation Parent Only Financial Information Notes 29 false false R30.htm 100290 - Disclosure - Net Income per Common Share (EPS) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureNetIncomePerCommonShareEPS Net Income per Common Share (EPS) Notes 30 false false R31.htm 100310 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies 31 false false R32.htm 100320 - Disclosure - Business Combination (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBusinessCombinationTables Business Combination (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBusinessCombination 32 false false R33.htm 100330 - Disclosure - Securities (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesTables Securities (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecurities 33 false false R34.htm 100340 - Disclosure - Loans Receivable (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivableTables Loans Receivable (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivable 34 false false R35.htm 100350 - Disclosure - Allowance for Credit Losses (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureAllowanceForCreditLossesTables Allowance for Credit Losses (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureAllowanceForCreditLosses 35 false false R36.htm 100360 - Disclosure - Leases (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLeasesTables Leases (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLeases 36 false false R37.htm 100370 - Disclosure - Premises and Equipment (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosurePremisesAndEquipmentTables Premises and Equipment (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosurePremisesAndEquipment 37 false false R38.htm 100380 - Disclosure - Goodwill and Other Intangible Assets (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsTables Goodwill and Other Intangible Assets (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssets 38 false false R39.htm 100390 - Disclosure - Deposits (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDepositsTables Deposits (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDeposits 39 false false R40.htm 100400 - Disclosure - Borrowings (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBorrowingsTables Borrowings (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBorrowings 40 false false R41.htm 100410 - Disclosure - Derivative Instruments and Hedging Activities (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivitiesTables Derivative Instruments and Hedging Activities (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivities 41 false false R42.htm 100420 - Disclosure - Benefit Plans (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansTables Benefit Plans (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlans 42 false false R43.htm 100430 - Disclosure - Stock Based Compensation (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockBasedCompensationTables Stock Based Compensation (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockBasedCompensation 43 false false R44.htm 100440 - Disclosure - Stockholders' Equity (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockholdersEquityTables Stockholders' Equity (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockholdersEquity 44 false false R45.htm 100450 - Disclosure - Income Taxes (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxesTables Income Taxes (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxes 45 false false R46.htm 100460 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstruments 46 false false R47.htm 100470 - Disclosure - Comprehensive Income (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureComprehensiveIncomeTables Comprehensive Income (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureComprehensiveIncome 47 false false R48.htm 100480 - Disclosure - Revenue Recognition (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureRevenueRecognitionTables Revenue Recognition (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureRevenueRecognition 48 false false R49.htm 100490 - Disclosure - Parent Only Financial Information (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureParentOnlyFinancialInformationTables Parent Only Financial Information (Tables) Tables http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureParentOnlyFinancialInformation 49 false false R50.htm 100500 - Disclosure - Net Income Per Common Share ("EPS") (Tables) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureNetIncomePerCommonShareEPSTables Net Income Per Common Share ("EPS") (Tables) Tables 50 false false R51.htm 100520 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetail Summary of Significant Accounting Policies - Additional Information (Detail) Details 51 false false R52.htm 100530 - Disclosure - Recent Accounting Pronouncements - Additional Information (Details) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureRecentAccountingPronouncementsAdditionalInformationDetails Recent Accounting Pronouncements - Additional Information (Details) Details 52 false false R53.htm 100540 - Disclosure - Business Combination - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBusinessCombinationAdditionalInformationDetail Business Combination - Additional Information (Detail) Details 53 false false R54.htm 100550 - Disclosure - Business Combination - Summary of Assets Acquired and Liabilities Assumed Through Merger at Fair Value (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBusinessCombinationSummaryOfAssetsAcquiredAndLiabilitiesAssumedThroughMergerAtFairValueDetail Business Combination - Summary of Assets Acquired and Liabilities Assumed Through Merger at Fair Value (Detail) Details 54 false false R55.htm 100560 - Disclosure - Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Values of Securities (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesAmortizedCostGrossUnrealizedGainsAndLossesAndFairValuesOfSecuritiesDetail Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Values of Securities (Detail) Details 55 false false R56.htm 100570 - Disclosure - Securities - Amortized Cost, Gross Unrecognized Gains and Losses and Fair Values of Securities (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesAmortizedCostGrossUnrecognizedGainsAndLossesAndFairValuesOfSecuritiesDetail Securities - Amortized Cost, Gross Unrecognized Gains and Losses and Fair Values of Securities (Detail) Details 56 false false R57.htm 100580 - Disclosure - Securities - Stratification by Contractual Maturity of Securities (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesStratificationByContractualMaturityOfSecuritiesDetail Securities - Stratification by Contractual Maturity of Securities (Detail) Details 57 false false R58.htm 100590 - Disclosure - Securities - Sales of Securities Available for Sale (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesSalesOfSecuritiesAvailableForSaleDetail Securities - Sales of Securities Available for Sale (Detail) Details 58 false false R59.htm 100600 - Disclosure - Securities - Calls of Securities Available for Sale (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureSecuritiesCallsOfSecuritiesAvailableForSaleDetail Securities - Calls of Securities Available for Sale (Detail) Details 59 false false R60.htm 100610 - Disclosure - Securities - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesAdditionalInformationDetail Securities - Additional Information (Detail) Details 60 false false R61.htm 100620 - Disclosure - Securities - Schedule of Available for Sale Securities Pledged (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesScheduleOfAvailableForSaleSecuritiesPledgedDetail Securities - Schedule of Available for Sale Securities Pledged (Detail) Details 61 false false R62.htm 100630 - Disclosure - Securities - Schedule of Fair Values and Gross Unrealized and Unrecognized Losses on Investments (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureSecuritiesScheduleOfFairValuesAndGrossUnrealizedAndUnrecognizedLossesOnInvestmentsDetail Securities - Schedule of Fair Values and Gross Unrealized and Unrecognized Losses on Investments (Detail) Details 62 false false R63.htm 100640 - Disclosure - Loans Receivable - Schedule of Loans Receivable (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivableScheduleOfLoansReceivableDetail Loans Receivable - Schedule of Loans Receivable (Detail) Details 63 false false R64.htm 100650 - Disclosure - Loans Receivable - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivableAdditionalInformationDetail Loans Receivable - Additional Information (Detail) Details 64 false false R65.htm 100660 - Disclosure - Loans Receivable - Contractual Payment Status of Loans Receivable (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureLoansReceivableContractualPaymentStatusOfLoansReceivableDetail Loans Receivable - Contractual Payment Status of Loans Receivable (Detail) Details 65 false false R66.htm 100670 - Disclosure - Loans Receivable - Performance Status of Loans Receivable (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivablePerformanceStatusOfLoansReceivableDetail Loans Receivable - Performance Status of Loans Receivable (Detail) Details 66 false false R67.htm 100680 - Disclosure - Loans Receivable - Troubled Debt Restructurings of Loans Receivable (Details) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivableTroubledDebtRestructuringsOfLoansReceivableDetails Loans Receivable - Troubled Debt Restructurings of Loans Receivable (Details) Details 67 false false R68.htm 100690 - Disclosure - Loans Receivable - Carrying Value Of Collateral Dependent Individually Analyzed Loans (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureLoansReceivableCarryingValueOfCollateralDependentIndividuallyAnalyzedLoansDetail Loans Receivable - Carrying Value Of Collateral Dependent Individually Analyzed Loans (Detail) Details 68 false false R69.htm 100700 - Disclosure - Loans Receivable - Credit-Rating Classification of Loans Receivable (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivableCreditRatingClassificationOfLoansReceivableDetail Loans Receivable - Credit-Rating Classification of Loans Receivable (Detail) Details 69 false false R70.htm 100710 - Disclosure - Loans Receivable - Acquisition Amount of MSB Purchased Loans (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLoansReceivableAcquisitionAmountOfMSBPurchasedLoansDetail Loans Receivable - Acquisition Amount of MSB Purchased Loans (Detail) Details 70 false false R71.htm 100720 - Disclosure - Allowance for Credit Losses - Allowance for Credit Losses and Balance of Loans Receivable (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureAllowanceForCreditLossesAllowanceForCreditLossesAndBalanceOfLoansReceivableDetail Allowance for Credit Losses - Allowance for Credit Losses and Balance of Loans Receivable (Detail) Details 71 false false R72.htm 100730 - Disclosure - Allowance for Credit Losses - Allowance for Credit Losses on Financing Receivables Off Balance Sheet Commitments (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureAllowanceForCreditLossesAllowanceForCreditLossesOnFinancingReceivablesOffBalanceSheetCommitmentsDetail Allowance for Credit Losses - Allowance for Credit Losses on Financing Receivables Off Balance Sheet Commitments (Detail) Details 72 false false R73.htm 100740 - Disclosure - Leases - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetail Leases - Additional Information (Detail) Details 73 false false R74.htm 100750 - Disclosure - Leases - Schedule of Future Minimum Rental Commitments for Operating Leases (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureLeasesScheduleOfFutureMinimumRentalCommitmentsForOperatingLeasesDetail Leases - Schedule of Future Minimum Rental Commitments for Operating Leases (Detail) Details 74 false false R75.htm 100760 - Disclosure - Premises and Equipment - Property, Plant and Equipment (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosurePremisesAndEquipmentPropertyPlantAndEquipmentDetail Premises and Equipment - Property, Plant and Equipment (Detail) Details 75 false false R76.htm 100770 - Disclosure - Premises and Equipment - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosurePremisesAndEquipmentAdditionalInformationDetail Premises and Equipment - Additional Information (Detail) Details 76 false false R77.htm 100780 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Goodwill (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfIntangibleAssetsAndGoodwillDetail Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Goodwill (Detail) Details 77 false false R78.htm 100800 - Disclosure - Goodwill and Other Intangible Assets - Scheduled Amortization of Core Deposit Intangibles (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduledAmortizationOfCoreDepositIntangiblesDetail Goodwill and Other Intangible Assets - Scheduled Amortization of Core Deposit Intangibles (Detail) Details 78 false false R79.htm 100810 - Disclosure - Deposits - Schedule of Deposits (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDepositsScheduleOfDepositsDetail Deposits - Schedule of Deposits (Detail) Details 79 false false R80.htm 100820 - Disclosure - Deposits - Schedule of Brokered Deposits (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDepositsScheduleOfBrokeredDepositsDetail Deposits - Schedule of Brokered Deposits (Detail) Details 80 false false R81.htm 100830 - Disclosure - Deposits - Certificates of Deposit By Maturity (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDepositsCertificatesOfDepositByMaturityDetail Deposits - Certificates of Deposit By Maturity (Detail) Details 81 false false R82.htm 100840 - Disclosure - Deposits - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDepositsAdditionalInformationDetail Deposits - Additional Information (Detail) Details 82 false false R83.htm 100850 - Disclosure - Borrowings - Schedule of Borrowings (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureBorrowingsScheduleOfBorrowingsDetail Borrowings - Schedule of Borrowings (Detail) Details 83 false false R84.htm 100860 - Disclosure - Borrowings - Schedule of Fixed Rate Advances from FHLB (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBorrowingsScheduleOfFixedRateAdvancesFromFHLBDetail Borrowings - Schedule of Fixed Rate Advances from FHLB (Detail) Details 84 false false R85.htm 100870 - Disclosure - Borrowings - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBorrowingsAdditionalInformationDetail Borrowings - Additional Information (Detail) Details 85 false false R86.htm 100880 - Disclosure - Derivative Instruments and Hedging Activities - Fair Values of Derivative Financial Instruments as well as Their Classification on Statement of Financial Condition (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivitiesFairValuesOfDerivativeFinancialInstrumentsAsWellAsTheirClassificationOnStatementOfFinancialConditionDetail Derivative Instruments and Hedging Activities - Fair Values of Derivative Financial Instruments as well as Their Classification on Statement of Financial Condition (Detail) Details 86 false false R87.htm 100890 - Disclosure - Derivative Instruments and Hedging Activities - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivitiesAdditionalInformationDetail Derivative Instruments and Hedging Activities - Additional Information (Detail) Details 87 false false R88.htm 100900 - Disclosure - Derivative Instruments and Hedging Activities - Pre-tax Effects of Derivative Instruments on Consolidated Statements of Income (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivitiesPreTaxEffectsOfDerivativeInstrumentsOnConsolidatedStatementsOfIncomeDetail Derivative Instruments and Hedging Activities - Pre-tax Effects of Derivative Instruments on Consolidated Statements of Income (Detail) Details 88 false false R89.htm 100910 - Disclosure - Derivative Instruments and Hedging Activities - Offsetting Derivatives (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureDerivativeInstrumentsAndHedgingActivitiesOffsettingDerivativesDetail Derivative Instruments and Hedging Activities - Offsetting Derivatives (Detail) Details 89 false false R90.htm 100920 - Disclosure - Benefit Plans - Schedule of Net Periodic Benefit Expense (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansScheduleOfNetPeriodicBenefitExpenseDetail Benefit Plans - Schedule of Net Periodic Benefit Expense (Detail) Details 90 false false R91.htm 100930 - Disclosure - Benefit Plans - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansAdditionalInformationDetail Benefit Plans - Additional Information (Detail) Details 91 false false R92.htm 100940 - Disclosure - Benefit Plans - Schedule of Employee Stock Ownership Plan (ESOP) Disclosures (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansScheduleOfEmployeeStockOwnershipPlanESOPDisclosuresDetail Benefit Plans - Schedule of Employee Stock Ownership Plan (ESOP) Disclosures (Detail) Details 92 false false R93.htm 100950 - Disclosure - Benefit Plans - Schedule of Net Funded Status (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansScheduleOfNetFundedStatusDetail Benefit Plans - Schedule of Net Funded Status (Detail) Details 93 false false R94.htm 100960 - Disclosure - Benefit Plans - Schedule of Net Benefit Costs (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansScheduleOfNetBenefitCostsDetail Benefit Plans - Schedule of Net Benefit Costs (Detail) Details 94 false false R95.htm 100970 - Disclosure - Benefit Plans - Schedule of Expected Benefit Payments (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansScheduleOfExpectedBenefitPaymentsDetail Benefit Plans - Schedule of Expected Benefit Payments (Detail) Details 95 false false R96.htm 100980 - Disclosure - Benefit Plans - Schedule of Fair Value Measurements of ABRIP's Assets (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureBenefitPlansScheduleOfFairValueMeasurementsOfABRIPSAssetsDetail Benefit Plans - Schedule of Fair Value Measurements of ABRIP's Assets (Detail) Details 96 false false R97.htm 101000 - Disclosure - Stock Based Compensation - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockBasedCompensationAdditionalInformationDetail Stock Based Compensation - Additional Information (Detail) Details 97 false false R98.htm 101010 - Disclosure - Stock Based Compensation - Schedule Of Share-Based Compensation Expense (Details) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureStockBasedCompensationScheduleOfSharebasedCompensationExpenseDetails Stock Based Compensation - Schedule Of Share-Based Compensation Expense (Details) Details 98 false false R99.htm 101030 - Disclosure - Stock Based Compensation - Summary of the Company's Stock Option Activity (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfCompanySStockOptionActivityDetail Stock Based Compensation - Summary of the Company's Stock Option Activity (Detail) Details 99 false false R100.htm 101040 - Disclosure - Stock Based Compensation - Summary of the Status of the Company's Non-vested Restricted Share Awards (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfStatusOfCompanySNonVestedRestrictedShareAwardsDetail Stock Based Compensation - Summary of the Status of the Company's Non-vested Restricted Share Awards (Detail) Details 100 false false R101.htm 101050 - Disclosure - Stockholders' Equity - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockholdersEquityAdditionalInformationDetail Stockholders' Equity - Additional Information (Detail) Details 101 false false R102.htm 101060 - Disclosure - Stockholders' Equity - Summary of Bank's Regulatory Capital Levels (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockholdersEquitySummaryOfBankSRegulatoryCapitalLevelsDetail Stockholders' Equity - Summary of Bank's Regulatory Capital Levels (Detail) Details 102 false false R103.htm 101070 - Disclosure - Stockholders' Equity - Summary of Company's Regulatory Capital Levels (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureStockholdersEquitySummaryOfCompanySRegulatoryCapitalLevelsDetail Stockholders' Equity - Summary of Company's Regulatory Capital Levels (Detail) Details 103 false false R104.htm 101080 - Disclosure - Income Taxes - Schedule of Components of Income Taxes (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfComponentsOfIncomeTaxesDetail Income Taxes - Schedule of Components of Income Taxes (Detail) Details 104 false false R105.htm 101090 - Disclosure - Income Taxes - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail Income Taxes - Additional Information (Detail) Details 105 false false R106.htm 101100 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) Details 106 false false R107.htm 101110 - Disclosure - Income Taxes - Schedule of Deferred Income Tax Assets and Liabilities (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureIncomeTaxesScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesDetail Income Taxes - Schedule of Deferred Income Tax Assets and Liabilities (Detail) Details 107 false false R108.htm 101120 - Disclosure - Commitments - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureCommitmentsAdditionalInformationDetail Commitments - Additional Information (Detail) Details 108 false false R109.htm 101130 - Disclosure - Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) Details 109 false false R110.htm 101140 - Disclosure - Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnNonRecurringBasisDetail Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Detail) Details 110 false false R111.htm 101150 - Disclosure - Fair Value of Financial Instruments - Schedule of Quantitative Information about Level 3 Fair Value Measurements (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsScheduleOfQuantitativeInformationAboutLevel3FairValueMeasurementsDetail Fair Value of Financial Instruments - Schedule of Quantitative Information about Level 3 Fair Value Measurements (Detail) Details 111 false false R112.htm 101160 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsAdditionalInformationDetail Fair Value of Financial Instruments - Additional Information (Detail) Details 112 false false R113.htm 101170 - Disclosure - Fair Value of Financial Instruments - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureFairValueOfFinancialInstrumentsScheduleOfCarryingAmountsAndFairValuesOfFinancialInstrumentsDetail Fair Value of Financial Instruments - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) Details 113 false false R114.htm 101180 - Disclosure - Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureComprehensiveIncomeScheduleOfAccumulatedOtherComprehensiveIncomeDetail Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Detail) Details 114 false false R115.htm 101190 - Disclosure - Comprehensive Income - Schedule of Comprehensive Income (loss) (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureComprehensiveIncomeScheduleOfComprehensiveIncomeLossDetail Comprehensive Income - Schedule of Comprehensive Income (loss) (Detail) Details 115 false false R116.htm 101200 - Disclosure - Revenue Recognition - Non Interest Income (Details) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureRevenueRecognitionNonInterestIncomeDetails Revenue Recognition - Non Interest Income (Details) Details 116 false false R117.htm 101210 - Disclosure - Parent Only Financial Information - Condensed Statements of Financial Condition (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureParentOnlyFinancialInformationCondensedStatementsOfFinancialConditionDetail Parent Only Financial Information - Condensed Statements of Financial Condition (Detail) Details 117 false false R118.htm 101220 - Disclosure - Parent Only Financial Information - Condensed Statements of Income and Comprehensive Income (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureParentOnlyFinancialInformationCondensedStatementsOfIncomeAndComprehensiveIncomeDetail Parent Only Financial Information - Condensed Statements of Income and Comprehensive Income (Detail) Details 118 false false R119.htm 101230 - Disclosure - Parent Only Financial Information - Condensed Statements of Cash Flows (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/DisclosureParentOnlyFinancialInformationCondensedStatementsOfCashFlowsDetail Parent Only Financial Information - Condensed Statements of Cash Flows (Detail) Details 119 false false R120.htm 101240 - Disclosure - Net Income Per Common Share (EPS) - Schedule of Earnings Per Share Calculations (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureNetIncomePerCommonShareEPSScheduleOfEarningsPerShareCalculationsDetail Net Income Per Common Share (EPS) - Schedule of Earnings Per Share Calculations (Detail) Details http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureNetIncomePerCommonShareEPSTables 120 false false R121.htm 101250 - Disclosure - Net Income per Common Share (EPS) - Additional Information (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureNetIncomePerCommonShareEPSAdditionalInformationDetail Net Income per Common Share (EPS) - Additional Information (Detail) Details http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureNetIncomePerCommonShareEPS 121 false false R122.htm 101260 - Disclosure - Quarterly Results of Operations - Summary of Quarterly Results of Operations (Detail) Sheet http://www.kearnyfederalsavings.com/20220630/taxonomy/role/Role_DisclosureQuarterlyResultsOfOperationsSummaryOfQuarterlyResultsOfOperationsDetail Quarterly Results of Operations - Summary of Quarterly Results of Operations (Detail) Details 122 false false All Reports Book All Reports [dq-0542-Deprecated-Concept] Concept PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged in us-gaap/2021 used in 8 facts was deprecated in us-gaap/2022 as of 2022 and should not be used. krny-20220630.htm 16276, 16280, 16287, 16291, 16298, 16302, 16312, 16316 [dq-0542-Deprecated-Concept] Concept FinancingReceivableChangeInPresentValueExpenseReversal in us-gaap/2021 used in 8 facts was deprecated in us-gaap/2022 as of 2022 and should not be used. krny-20220630.htm 24014, 24044, 24074, 24104, 24134, 24164, 24194, 24224 [dq-0542-Deprecated-Concept] Concept FairValueMeasurementsValuationProcessesDescription in us-gaap/2021 used in 8 facts was deprecated in us-gaap/2022 as of 2022 and should not be used. krny-20220630.htm 32225, 32241, 32257, 32316, 32403, 32419, 32435, 32494 [dq-0542-Deprecated-Concept] Concept CashAndCashEquivalentsPeriodIncreaseDecrease in us-gaap/2021 used in 3 facts was deprecated in us-gaap/2022 as of 2022 and should not be used. krny-20220630.htm 34560, 34564, 34568 [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 4 fact(s) appearing in ix:hidden were eligible for transformation: dei:CurrentFiscalYearEndDate, us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1, us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2 - krny-20220630.htm 8 [ix-0514-Hidden-Fact-Not-Referenced] WARN: 16 fact(s) appearing in ix:hidden were not referenced by any -sec-ix-hidden style property: us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleList, us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleList, us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList, us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList, us-gaap:OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList, us-gaap:OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList - krny-20220630.htm 8 krny-20220630.htm krny-20220630.xsd krny-20220630_cal.xml krny-20220630_def.xml krny-20220630_lab.xml krny-20220630_pre.xml krny-ex21.htm krny-ex23_1.htm krny-ex31_1.htm krny-ex31_2.htm krny-ex32_1.htm krny-ex32_2.htm img204574428_0.jpg img204574428_1.jpg http://fasb.org/srt/2021-01-31 http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true