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Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS Sheet http://westfieldbank.com/role/RecentAccountingPronouncements RECENT ACCOUNTING PRONOUNCEMENTS Notes 22 false false R23.htm 999026 - Disclosure - SEGMENT Sheet http://westfieldbank.com/role/Segment SEGMENT Notes 23 false false R24.htm 999027 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://westfieldbank.com/role/SummaryOfSignificantAccountingPoliciesPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Policies 24 false false R25.htm 999028 - Disclosure - EARNINGS PER SHARE (Tables) Sheet http://westfieldbank.com/role/EarningsPerShareTables EARNINGS PER SHARE (Tables) Tables http://westfieldbank.com/role/EarningsPerShare 25 false false R26.htm 999029 - Disclosure - COMPREHENSIVE INCOME (LOSS) (Tables) Sheet http://westfieldbank.com/role/ComprehensiveIncomeLossTables COMPREHENSIVE INCOME (LOSS) (Tables) Tables http://westfieldbank.com/role/ComprehensiveIncomeLoss 26 false false R27.htm 999030 - Disclosure - INVESTMENT SECURITIES (Tables) Sheet http://westfieldbank.com/role/InvestmentSecuritiesTables INVESTMENT SECURITIES (Tables) Tables http://westfieldbank.com/role/InvestmentSecurities 27 false false R28.htm 999031 - Disclosure - LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables) Sheet http://westfieldbank.com/role/LoansAndAllowanceForCreditLossesTables LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables) Tables http://westfieldbank.com/role/LoansAndAllowanceForCreditLosses 28 false false R29.htm 999032 - Disclosure - SHARE-BASED COMPENSATION (Tables) Sheet http://westfieldbank.com/role/Share-basedCompensationTables SHARE-BASED COMPENSATION (Tables) Tables http://westfieldbank.com/role/Share-basedCompensation 29 false false R30.htm 999033 - Disclosure - DERIVATIVES AND HEDGING ACTIVITIES (Tables) Sheet http://westfieldbank.com/role/DerivativesAndHedgingActivitiesTables DERIVATIVES AND HEDGING ACTIVITIES (Tables) Tables http://westfieldbank.com/role/DerivativesAndHedgingActivities 30 false false R31.htm 999034 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Tables) Sheet http://westfieldbank.com/role/FairValueOfAssetsAndLiabilitiesTables FAIR VALUE OF ASSETS AND LIABILITIES (Tables) Tables http://westfieldbank.com/role/FairValueOfAssetsAndLiabilities 31 false false R32.htm 999035 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) Sheet http://westfieldbank.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) Details http://westfieldbank.com/role/SummaryOfSignificantAccountingPoliciesPolicies 32 false false R33.htm 999036 - Disclosure - Earnings per common share for the three months ended March 31, 2026 and the three months ended March 31, 2025 have been computed based on the following: (Details) Sheet http://westfieldbank.com/role/EarningsPerCommonShareForThreeMonthsEndedMarch312026AndThreeMonthsEndedMarch312025HaveBeenComputedBasedOnFollowingDetails Earnings per common share for the three months ended March 31, 2026 and the three months ended March 31, 2025 have been computed based on the following: (Details) Details 33 false false R34.htm 999037 - Disclosure - The components of accumulated other comprehensive loss, included in shareholders??? equity, are as follows (Details) Sheet http://westfieldbank.com/role/ComponentsOfAccumulatedOtherComprehensiveLossIncludedInShareholdersEquityAreAsFollowsDetails The components of accumulated other comprehensive loss, included in shareholders??? equity, are as follows (Details) Details 34 false false R35.htm 999038 - Disclosure - The following tables summarize the amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2026 and December 31, 2025 (Details) Sheet http://westfieldbank.com/role/FollowingTablesSummarizeAmortizedCostAndFairValueOfSecuritiesAvailable-for-saleAndHeld-to-maturityAtMarch312026AndDecember312025Details The following tables summarize the amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2026 and December 31, 2025 (Details) Details 35 false false R36.htm 999039 - Disclosure - The following table presents the unrealized gains recognized on marketable equity securities for the periods indicated (Details) Sheet http://westfieldbank.com/role/FollowingTablePresentsUnrealizedGainsRecognizedOnMarketableEquitySecuritiesForPeriodsIndicatedDetails The following table presents the unrealized gains recognized on marketable equity securities for the periods indicated (Details) Details 36 false false R37.htm 999040 - Disclosure - The amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2026, by final maturity, are shown below (Details) Sheet http://westfieldbank.com/role/AmortizedCostAndFairValueOfSecuritiesAvailable-for-saleAndHeld-to-maturityAtMarch312026ByFinalMaturityAreShownBelowDetails The amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2026, by final maturity, are shown below (Details) Details 37 false false R38.htm 999041 - Disclosure - The following tables summarize the gross unrealized losses and fair value of the Company???s securities available-for-sale and held-to-maturity, segregated by the duration of their continuous unrealized loss positions at March 31, 2026 and December 31, 2025 (Details) Sheet http://westfieldbank.com/role/FollowingTablesSummarizeGrossUnrealizedLossesAndFairValueOfCompanysSecuritiesAvailable-for-saleAndHeld-to-maturitySegregatedByDurationOfTheirContinuousUnrealizedLossPositionsAtMarch312026AndDecember312025Details The following tables summarize the gross unrealized losses and fair value of the Company???s securities available-for-sale and held-to-maturity, segregated by the duration of their continuous unrealized loss positions at March 31, 2026 and December 31, 2025 (Details) Details 38 false false R39.htm 999042 - Disclosure - INVESTMENT SECURITIES (Details Narrative) Sheet http://westfieldbank.com/role/InvestmentSecuritiesDetailsNarrative INVESTMENT SECURITIES (Details Narrative) Details http://westfieldbank.com/role/InvestmentSecuritiesTables 39 false false R40.htm 999043 - Disclosure - The following table presents the summary of the loan portfolio by the major classification of the loan at the periods indicated: (Details) Sheet http://westfieldbank.com/role/FollowingTablePresentsSummaryOfLoanPortfolioByMajorClassificationOfLoanAtPeriodsIndicatedDetails The following table presents the summary of the loan portfolio by the major classification of the loan at the periods indicated: (Details) Details 40 false false R41.htm 999044 - Disclosure - A summary of the activity in the balances of mortgage servicing rights follows: (Details) Sheet http://westfieldbank.com/role/SummaryOfActivityInBalancesOfMortgageServicingRightsFollowsDetails A summary of the activity in the balances of mortgage servicing rights follows: (Details) Details 41 false false R42.htm 999045 - Disclosure - An analysis of changes in the allowance for credit losses by segment for the three months ended March 31, 2026 and March 31, 2025 is as follows (Details) Sheet http://westfieldbank.com/role/AnalysisOfChangesInAllowanceForCreditLossesBySegmentForThreeMonthsEndedMarch312026AndMarch312025IsAsFollowsDetails An analysis of changes in the allowance for credit losses by segment for the three months ended March 31, 2026 and March 31, 2025 is as follows (Details) Details 42 false false R43.htm 999046 - Disclosure - The following tables present an age analysis of past due loans as of the dates indicated (Details) Sheet http://westfieldbank.com/role/FollowingTablesPresentAgeAnalysisOfPastDueLoansAsOfDatesIndicatedDetails The following tables present an age analysis of past due loans as of the dates indicated (Details) Details 43 false false R44.htm 999047 - Disclosure - The following table is a summary of the Company???s nonaccrual loans by major categories at March 31, 2026 and December 31, 2025: (Details) Sheet http://westfieldbank.com/role/FollowingTableIsSummaryOfCompanysNonaccrualLoansByMajorCategoriesAtMarch312026AndDecember312025Details The following table is a summary of the Company???s nonaccrual loans by major categories at March 31, 2026 and December 31, 2025: (Details) Details 44 false false R45.htm 999048 - Disclosure - The following table summarizes the Company???s individually evaluated collateral dependent loans by class as of the dates indicated: (Details) Sheet http://westfieldbank.com/role/FollowingTableSummarizesCompanysIndividuallyEvaluatedCollateralDependentLoansByClassAsOfDatesIndicatedDetails The following table summarizes the Company???s individually evaluated collateral dependent loans by class as of the dates indicated: (Details) Details 45 false false R46.htm 999049 - Disclosure - The following tables summarize the amortized cost basis by aggregate Pass and criticized categories of Special Mention and Substandard within the Company???s internal risk rating system by year of origination as of March 31, 2026 and December 31, 2025 (Details) Sheet http://westfieldbank.com/role/FollowingTablesSummarizeAmortizedCostBasisByAggregatePassAndCriticizedCategoriesOfSpecialMentionAndSubstandardWithinCompanysInternalRiskRatingSystemByYearOfOriginationAsOfMarch312026AndDecember312025Details The following tables summarize the amortized cost basis by aggregate Pass and criticized categories of Special Mention and Substandard within the Company???s internal risk rating system by year of origination as of March 31, 2026 and December 31, 2025 (Details) Details 46 false false R47.htm 999050 - Disclosure - The following table summarizes information about total loans rated Special Mention, Substandard, Doubtful, or Loss for the periods noted. (Details) Sheet http://westfieldbank.com/role/FollowingTableSummarizesInformationAboutTotalLoansRatedSpecialMentionSubstandardDoubtfulOrLossForPeriodsNoted.Details The following table summarizes information about total loans rated Special Mention, Substandard, Doubtful, or Loss for the periods noted. 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Disclosure - The Threshold, Target and Stretch metrics under the 2024 LTI Plan are as follows (Details) Sheet http://westfieldbank.com/role/ThresholdTargetAndStretchMetricsUnder2024LtiPlanAreAsFollowsDetails The Threshold, Target and Stretch metrics under the 2024 LTI Plan are as follows (Details) Details 51 false false R52.htm 999055 - Disclosure - The Threshold, Target and Stretch metrics under the 2025 LTI Plan are as follows (Details) Sheet http://westfieldbank.com/role/ThresholdTargetAndStretchMetricsUnder2025LtiPlanAreAsFollowsDetails The Threshold, Target and Stretch metrics under the 2025 LTI Plan are as follows (Details) Details 52 false false R53.htm 999056 - Disclosure - The Threshold, Target and Stretch metrics under the 2026 LTI Plan are as follows (Details) Sheet http://westfieldbank.com/role/ThresholdTargetAndStretchMetricsUnder2026LtiPlanAreAsFollowsDetails The Threshold, Target and Stretch metrics under the 2026 LTI Plan are as follows (Details) Details 53 false false R54.htm 999057 - Disclosure - A summary of the status of unvested restricted stock awards at March 31, 2026 and March 31, 2025 is presented below (Details) Sheet http://westfieldbank.com/role/SummaryOfStatusOfUnvestedRestrictedStockAwardsAtMarch312026AndMarch312025IsPresentedBelowDetails A summary of the status of unvested restricted stock awards at March 31, 2026 and March 31, 2025 is presented below (Details) Details 54 false false R55.htm 999058 - Disclosure - SHARE-BASED COMPENSATION (Details Narrative) Sheet http://westfieldbank.com/role/Share-basedCompensationDetailsNarrative SHARE-BASED COMPENSATION (Details Narrative) Details http://westfieldbank.com/role/Share-basedCompensationTables 55 false false R56.htm 999059 - Disclosure - SHORT-TERM BORROWINGS AND LONG-TERM DEBT (Details Narrative) Sheet http://westfieldbank.com/role/Short-termBorrowingsAndLong-termDebtDetailsNarrative SHORT-TERM BORROWINGS AND LONG-TERM DEBT (Details Narrative) Details http://westfieldbank.com/role/Short-termBorrowingsAndLong-termDebt 56 false false R57.htm 999060 - Disclosure - SUBORDINATED DEBT (Details Narrative) Sheet http://westfieldbank.com/role/SubordinatedDebtDetailsNarrative SUBORDINATED DEBT (Details Narrative) Details http://westfieldbank.com/role/SubordinatedDebt 57 false false R58.htm 999061 - Disclosure - The tables below present the fair value of our derivative financial instruments designated as non-hedging instruments as well as our classification on the balance sheet as of March 31, 2026 and December 31, 2025 (Details) Sheet http://westfieldbank.com/role/TablesBelowPresentFairValueOfOurDerivativeFinancialInstrumentsDesignatedAsNon-hedgingInstrumentsAsWellAsOurClassificationOnBalanceSheetAsOfMarch312026AndDecember312025Details The tables below present the fair value of our derivative financial instruments designated as non-hedging instruments as well as our classification on the balance sheet as of March 31, 2026 and December 31, 2025 (Details) Details 58 false false R59.htm 999062 - Disclosure - Assets and liabilities measured at fair value on a recurring basis are summarized below (Details) Sheet http://westfieldbank.com/role/AssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisAreSummarizedBelowDetails Assets and liabilities measured at fair value on a recurring basis are summarized below (Details) Details 59 false false R60.htm 999063 - Disclosure - The following table summarizes the fair value hierarchy used to determine the carrying values of the related assets as of December 31, 2025 (Details) Sheet http://westfieldbank.com/role/FollowingTableSummarizesFairValueHierarchyUsedToDetermineCarryingValuesOfRelatedAssetsAsOfDecember312025Details The following table summarizes the fair value hierarchy used to determine the carrying values of the related assets as of December 31, 2025 (Details) Details 60 false false R61.htm 999064 - Disclosure - The estimated fair values of our financial instruments are as follows (Details) Sheet http://westfieldbank.com/role/EstimatedFairValuesOfOurFinancialInstrumentsAreAsFollowsDetails The estimated fair values of our financial instruments are as follows (Details) Details 61 false false R62.htm 999065 - Disclosure - SEGMENT (Details Narrative) Sheet http://westfieldbank.com/role/SegmentDetailsNarrative SEGMENT (Details Narrative) Details http://westfieldbank.com/role/Segment 62 false false All Reports Book All Reports wneb-10q_03312026.htm wneb-20260331.xsd wneb-20260331_cal.xml wneb-20260331_def.xml wneb-20260331_lab.xml wneb-20260331_pre.xml http://fasb.org/srt/2026 http://fasb.org/us-gaap/2026 http://xbrl.sec.gov/dei/2026 http://xbrl.sec.gov/ecd/2026 true true