3.22.2.2 html 826 454 1 true 122 0 false 9 false false R1.htm 100000 - Document - Document and Entity Information Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 100010 - Statement - Consolidated Statements of Condition (Unaudited) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfConditionUnaudited Consolidated Statements of Condition (Unaudited) Statements 2 false false R3.htm 100020 - Statement - Consolidated Statements of Condition (Unaudited) (Parenthetical) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfConditionUnauditedParenthetical Consolidated Statements of Condition (Unaudited) (Parenthetical) Statements 3 false false R4.htm 100030 - Statement - Consolidated Statements of Income (Unaudited) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfIncomeUnaudited Consolidated Statements of Income (Unaudited) Statements 4 false false R5.htm 100040 - Statement - Consolidated Statements of Comprehensive (Loss) Income (Unaudited) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfComprehensiveLossIncomeUnaudited Consolidated Statements of Comprehensive (Loss) Income (Unaudited) Statements 5 false false R6.htm 100050 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfChangesInShareholdersEquityUnaudited Consolidated Statements of Changes in Shareholders' Equity (Unaudited) Statements 6 false false R7.htm 100060 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfChangesInShareholdersEquityUnauditedParenthetical Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) Statements 7 false false R8.htm 100070 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlowsUnaudited Consolidated Statements of Cash Flows (Unaudited) Statements 8 false false R9.htm 100080 - Disclosure - Basis of Presentation Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureBasisOfPresentation Basis of Presentation Notes 9 false false R10.htm 100090 - Disclosure - New Accounting Pronouncements Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureNewAccountingPronouncements New Accounting Pronouncements Notes 10 false false R11.htm 100100 - Disclosure - Earnings per Common Share Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureEarningsPerCommonShare Earnings per Common Share Notes 11 false false R12.htm 100110 - Disclosure - Investment Securities Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecurities Investment Securities Notes 12 false false R13.htm 100120 - Disclosure - Pension and Postretirement Benefits Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosurePensionAndPostretirementBenefits Pension and Postretirement Benefits Notes 13 false false R14.htm 100130 - Disclosure - Loans Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoans Loans Notes 14 false false R15.htm 100140 - Disclosure - Allowance for Loan Losses Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureAllowanceForLoanLosses Allowance for Loan Losses Notes 15 false false R16.htm 100150 - Disclosure - Foreclosed Real Estate Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureForeclosedRealEstate Foreclosed Real Estate Notes 16 false false R17.htm 100160 - Disclosure - Guarantees Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureGuarantees Guarantees Notes 17 false false R18.htm 100170 - Disclosure - Fair Value Measurements Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurements Fair Value Measurements Notes 18 false false R19.htm 100180 - Disclosure - Interest Rate Derivatives Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivatives Interest Rate Derivatives Notes 19 false false R20.htm 100190 - Disclosure - Accumulated Other Comprehensive (Loss) Income Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncome Accumulated Other Comprehensive (Loss) Income Notes 20 false false R21.htm 100200 - Disclosure - Noninterest Income Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureNoninterestIncome Noninterest Income Notes 21 false false R22.htm 100210 - Disclosure - Leases Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeases Leases Notes 22 false false R23.htm 100220 - Disclosure - COVID- 19 Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureCOVID19 COVID- 19 Notes 23 false false R24.htm 100230 - Disclosure - Related Party Transactions Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureRelatedPartyTransactions Related Party Transactions Notes 24 false false R25.htm 100240 - Disclosure - Earnings per Common Share (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureEarningsPerCommonShareTables Earnings per Common Share (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureEarningsPerCommonShare 25 false false R26.htm 100250 - Disclosure - Investment Securities (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecuritiesTables Investment Securities (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecurities 26 false false R27.htm 100260 - Disclosure - Pension and Postretirement Benefits (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosurePensionAndPostretirementBenefitsTables Pension and Postretirement Benefits (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosurePensionAndPostretirementBenefits 27 false false R28.htm 100270 - Disclosure - Loans (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansTables Loans (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoans 28 false false R29.htm 100280 - Disclosure - Allowance for Loan Losses (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureAllowanceForLoanLossesTables Allowance for Loan Losses (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureAllowanceForLoanLosses 29 false false R30.htm 100290 - Disclosure - Foreclosed Real Estate (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureForeclosedRealEstateTables Foreclosed Real Estate (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureForeclosedRealEstate 30 false false R31.htm 100300 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurements 31 false false R32.htm 100310 - Disclosure - Interest Rate Derivatives (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivativesTables Interest Rate Derivatives (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivatives 32 false false R33.htm 100320 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncomeTables Accumulated Other Comprehensive (Loss) Income (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncome 33 false false R34.htm 100330 - Disclosure - Noninterest Income (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureNoninterestIncomeTables Noninterest Income (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureNoninterestIncome 34 false false R35.htm 100340 - Disclosure - Leases (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeasesTables Leases (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeases 35 false false R36.htm 100350 - Disclosure - Related Party Transactions (Tables) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureRelatedPartyTransactionsTables Related Party Transactions (Tables) Tables http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureRelatedPartyTransactions 36 false false R37.htm 100360 - Disclosure - Basis of Presentation - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureBasisOfPresentationAdditionalInformationDetails Basis of Presentation - Additional Information (Details) Details 37 false false R38.htm 100370 - Disclosure - Earnings per Common Share - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureEarningsPerCommonShareAdditionalInformationDetails Earnings per Common Share - Additional Information (Details) Details 38 false false R39.htm 100380 - Disclosure - Earnings per Common Share - Calculations of Basic and Diluted Earnings per Share (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureEarningsPerCommonShareCalculationsOfBasicAndDilutedEarningsPerShareDetails Earnings per Common Share - Calculations of Basic and Diluted Earnings per Share (Details) Details 39 false false R40.htm 100390 - Disclosure - Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecuritiesAmortizedCostAndEstimatedFairValueOfInvestmentSecuritiesDetails Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities (Details) Details 40 false false R41.htm 100400 - Disclosure - Investment Securities - Amortized Cost and Estimated Fair Value of Debt Investments by Contractual Maturity (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecuritiesAmortizedCostAndEstimatedFairValueOfDebtInvestmentsByContractualMaturityDetails Investment Securities - Amortized Cost and Estimated Fair Value of Debt Investments by Contractual Maturity (Details) Details 41 false false R42.htm 100410 - Disclosure - Investment Securities - Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category and Length of Time that Individual Securities Have Continuous Unrealized Loss Position (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecuritiesInvestmentSecuritiesGrossUnrealizedLossesAndFairValueByInvestmentCategoryAndLengthOfTimeThatIndividualSecuritiesHaveContinuousUnrealizedLossPositionDetails Investment Securities - Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category and Length of Time that Individual Securities Have Continuous Unrealized Loss Position (Details) Details 42 false false R43.htm 100420 - Disclosure - Investment Securities - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecuritiesAdditionalInformationDetails Investment Securities - Additional Information (Details) Details 43 false false R44.htm 100430 - Disclosure - Investment Securities - Gross Realized Gains (Losses) on Sale and Redemptions of Securities (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInvestmentSecuritiesGrossRealizedGainsLossesOnSaleAndRedemptionsOfSecuritiesDetails Investment Securities - Gross Realized Gains (Losses) on Sale and Redemptions of Securities (Details) Details 44 false false R45.htm 100440 - Disclosure - Pension and Postretirement Benefits - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosurePensionAndPostretirementBenefitsAdditionalInformationDetails Pension and Postretirement Benefits - Additional Information (Details) Details 45 false false R46.htm 100450 - Disclosure - Pension and Postretirement Benefits - Composition of Net Periodic Pension Plan and Postretirement Plan Costs (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosurePensionAndPostretirementBenefitsCompositionOfNetPeriodicPensionPlanAndPostretirementPlanCostsDetails Pension and Postretirement Benefits - Composition of Net Periodic Pension Plan and Postretirement Plan Costs (Details) Details 46 false false R47.htm 100460 - Disclosure - Loans - Major Classification of Loans (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansMajorClassificationOfLoansDetails Loans - Major Classification of Loans (Details) Details 47 false false R48.htm 100470 - Disclosure - Loans - Summary of Purchased Loans Pools (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansSummaryOfPurchasedLoansPoolsDetails Loans - Summary of Purchased Loans Pools (Details) Details 48 false false R49.htm 100480 - Disclosure - Loans - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansAdditionalInformationDetails Loans - Additional Information (Details) Details 49 false false R50.htm 100490 - Disclosure - Loans - Summary of Classes of Loan Portfolio (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansSummaryOfClassesOfLoanPortfolioDetails Loans - Summary of Classes of Loan Portfolio (Details) Details 50 false false R51.htm 100500 - Disclosure - Loans - Age Analysis of Past Due Loans Segregated by Portfolio Segment and Class of Loans (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansAgeAnalysisOfPastDueLoansSegregatedByPortfolioSegmentAndClassOfLoansDetails Loans - Age Analysis of Past Due Loans Segregated by Portfolio Segment and Class of Loans (Details) Details 51 false false R52.htm 100510 - Disclosure - Loans - Nonaccrual Loans Segregated by Class of Loan (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansNonaccrualLoansSegregatedByClassOfLoanDetails Loans - Nonaccrual Loans Segregated by Class of Loan (Details) Details 52 false false R53.htm 100520 - Disclosure - Loans - Troubled Debt Restructurings on Financing Receivables (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansTroubledDebtRestructuringsOnFinancingReceivablesDetails Loans - Troubled Debt Restructurings on Financing Receivables (Details) Details 53 false false R54.htm 100530 - Disclosure - Loans - Summary of Impaired Loan Information by Portfolio Class (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansSummaryOfImpairedLoanInformationByPortfolioClassDetails Loans - Summary of Impaired Loan Information by Portfolio Class (Details) Details 54 false false R55.htm 100540 - Disclosure - Loans - Summary of Average Recorded Investment (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansSummaryOfAverageRecordedInvestmentDetails Loans - Summary of Average Recorded Investment (Details) Details 55 false false R56.htm 100550 - Disclosure - Loans - Schedule of Cash Basis Interest Income Recognized on Impaired Loans (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLoansScheduleOfCashBasisInterestIncomeRecognizedOnImpairedLoansDetails Loans - Schedule of Cash Basis Interest Income Recognized on Impaired Loans (Details) Details 56 false false R57.htm 100560 - Disclosure - Allowance for Loan Losses - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureAllowanceForLoanLossesAdditionalInformationDetails Allowance for Loan Losses - Additional Information (Details) Details 57 false false R58.htm 100570 - Disclosure - Allowance for Loan Losses - Changes in the Allowance for Loan Losses (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureAllowanceForLoanLossesChangesInAllowanceForLoanLossesDetails Allowance for Loan Losses - Changes in the Allowance for Loan Losses (Details) Details 58 false false R59.htm 100580 - Disclosure - Allowance for Loan Losses - Schedule of Allowance for Loan Losses on Basis of Calculation Methodology (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureAllowanceForLoanLossesScheduleOfAllowanceForLoanLossesOnBasisOfCalculationMethodologyDetails Allowance for Loan Losses - Schedule of Allowance for Loan Losses on Basis of Calculation Methodology (Details) Details 59 false false R60.htm 100590 - Disclosure - Foreclosed Real Estate - Carrying amount of foreclosed residential real estate properties (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureForeclosedRealEstateCarryingAmountOfForeclosedResidentialRealEstatePropertiesDetails Foreclosed Real Estate - Carrying amount of foreclosed residential real estate properties (Details) Details 60 false false R61.htm 100600 - Disclosure - Foreclosed Real Estate - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureForeclosedRealEstateAdditionalInformationDetails Foreclosed Real Estate - Additional Information (Details) Details 61 false false R62.htm 100610 - Disclosure - Guarantees - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureGuaranteesAdditionalInformationDetails Guarantees - Additional Information (Details) Details 62 false false R63.htm 100620 - Disclosure - Fair Value Measurements - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurementsAdditionalInformationDetails Fair Value Measurements - Additional Information (Details) Details 63 false false R64.htm 100630 - Disclosure - Fair Value Measurements - Fair Value of Assets on Recurring Basis Segregated by Level of Valuation Inputs (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurementsFairValueOfAssetsOnRecurringBasisSegregatedByLevelOfValuationInputsDetails Fair Value Measurements - Fair Value of Assets on Recurring Basis Segregated by Level of Valuation Inputs (Details) Details 64 false false R65.htm 100640 - Disclosure - Fair Value Measurements - Summary of Fair Value Assets Measured on Nonrecurring Basis (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurementsSummaryOfFairValueAssetsMeasuredOnNonrecurringBasisDetails Fair Value Measurements - Summary of Fair Value Assets Measured on Nonrecurring Basis (Details) Details 65 false false R66.htm 100650 - Disclosure - Fair Value Measurements - Fair Value Inputs, Quantitative Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurementsFairValueInputsQuantitativeInformationDetails Fair Value Measurements - Fair Value Inputs, Quantitative Information (Details) Details 66 false false R67.htm 100660 - Disclosure - Fair Value Measurements - Carrying Amounts and Fair Value of Financial Instruments (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureFairValueMeasurementsCarryingAmountsAndFairValueOfFinancialInstrumentsDetails Fair Value Measurements - Carrying Amounts and Fair Value of Financial Instruments (Details) Details 67 false false R68.htm 100670 - Disclosure - Interest Rate Derivatives - Cumulative Basis Adjustments for Fair Value Hedges (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivativesCumulativeBasisAdjustmentsForFairValueHedgesDetails Interest Rate Derivatives - Cumulative Basis Adjustments for Fair Value Hedges (Details) Details 68 false false R69.htm 100680 - Disclosure - Interest Rate Derivatives - Cumulative Basis Adjustments for Fair Value Hedges (Parenthetical) (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivativesCumulativeBasisAdjustmentsForFairValueHedgesParentheticalDetails Interest Rate Derivatives - Cumulative Basis Adjustments for Fair Value Hedges (Parenthetical) (Details) Details 69 false false R70.htm 100690 - Disclosure - Interest Rate Derivatives - Schedule of Cash Flow Hedges (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivativesScheduleOfCashFlowHedgesDetails Interest Rate Derivatives - Schedule of Cash Flow Hedges (Details) Details 70 false false R71.htm 100700 - Disclosure - Interest Rate Derivatives - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureInterestRateDerivativesAdditionalInformationDetails Interest Rate Derivatives - Additional Information (Details) Details 71 false false R72.htm 100710 - Disclosure - Accumulated Other Comprehensive (Loss) Income - Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncomeChangesInTheComponentsOfAccumulatedOtherComprehensiveIncomeLossNetOfTaxDetails Accumulated Other Comprehensive (Loss) Income - Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) Details http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncomeTables 72 false false R73.htm 100720 - Disclosure - Accumulated Other Comprehensive (Loss) Income - Summary of Amounts Reclassified Out of Each Component of AOCI (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncomeSummaryOfAmountsReclassifiedOutOfEachComponentOfAociDetails Accumulated Other Comprehensive (Loss) Income - Summary of Amounts Reclassified Out of Each Component of AOCI (Details) Details http://www.pathfinderbank.com/20220630/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossIncomeTables 73 false false R74.htm 100730 - Disclosure - Noninterest Income - Summary of Noninterest Income (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureNoninterestIncomeSummaryOfNoninterestIncomeDetails Noninterest Income - Summary of Noninterest Income (Details) Details 74 false false R75.htm 100740 - Disclosure - Leases - Additional Information (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetails Leases - Additional Information (Details) Details 75 false false R76.htm 100750 - Disclosure - Leases - Components of Lease Expense (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeasesComponentsOfLeaseExpenseDetails Leases - Components of Lease Expense (Details) Details 76 false false R77.htm 100760 - Disclosure - Leases - Supplemental Cash Flow Information Related to Leases (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeasesSupplementalCashFlowInformationRelatedToLeasesDetails Leases - Supplemental Cash Flow Information Related to Leases (Details) Details 77 false false R78.htm 100770 - Disclosure - Leases - Supplemental Balance Sheet Information Related to Leases (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeasesSupplementalBalanceSheetInformationRelatedToLeasesDetails Leases - Supplemental Balance Sheet Information Related to Leases (Details) Details 78 false false R79.htm 100780 - Disclosure - Leases - Maturities of Lease Liabilities (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureLeasesMaturitiesOfLeaseLiabilitiesDetails Leases - Maturities of Lease Liabilities (Details) Details 79 false false R80.htm 100790 - Disclosure - Related Party Transactions - Schedule of Loans to Related Parties (Details) Sheet http://www.pathfinderbank.com/20220630/taxonomy/role/Role_DisclosureRelatedPartyTransactionsScheduleOfLoansToRelatedPartiesDetails Related Party Transactions - Schedule of Loans to Related Parties (Details) Details 80 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 20 fact(s) appearing in ix:hidden were eligible for transformation: dei:EntityRegistrantName, pbhc:AvailableForSaleDebtAndEquitySecurities, us-gaap:AlternativeInvestmentMeasurementInput, us-gaap:EquitySecuritiesFvNi, us-gaap:InterestRateCashFlowHedgeDerivativeAtFairValueNet, us-gaap:InterestRateFairValueHedgeDerivativeAtFairValueNet, us-gaap:InvestmentsFairValueDisclosure, us-gaap:LesseeOperatingLeaseExistenceOfOptionToExtend - pbhc-20220630.htm 8 [ix-0514-Hidden-Fact-Not-Referenced] WARN: 2 fact(s) appearing in ix:hidden were not referenced by any -sec-ix-hidden style property: us-gaap:FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList - pbhc-20220630.htm 8 [EFM.6.05.45.cover-page-fact-not-visible] Submission type 10-Q has 2 cover page fact(s) in ix:hidden that should be visible or referenced by an -sec-ix-hidden style property: EntityCurrentReportingStatus, EntityInteractiveDataCurrent - pbhc-20220630.htm 8 - pbhc-20220630.htm 8 pbhc-20220630.htm pbhc-20220630.xsd pbhc-20220630_cal.xml pbhc-20220630_def.xml pbhc-20220630_lab.xml pbhc-20220630_pre.xml pbhc-ex31_1.htm pbhc-ex31_2.htm pbhc-ex32.htm img234516545_0.jpg http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true