Document And Entity Information
Note To Financial Statement Details Textual
Statistical Measurement [Axis]
Significant Accounting Policies
Note 2 - Investment Securities
Provision for income taxes
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 3 - Loans Receivable
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 4 - Mortgage Servicing Rights
Trading Arrangements, by Individual [Table]
Note 5 - Deposits
Debit Card [Member]
Material Terms of Trading Arrangement [Text Block]
Note 6 - Other Long-term Debt
Deposit Account [Member]
Note 7 - Accumulated Other Comprehensive Income (Loss)
Financial Instrument [Axis]
Note 8 - Earnings Per Common Share
Investment in Debt and Equity Securities and Other Trading Assets [Text Block]
Note 9 - Derivatives and Hedging Activities
ebmt_DebtInstrumentInterestRateFloatingRate
Debt Instrument, Interest Rate, Floating Rate
The floating interest rate for the debt instrument.
Note 10 - Fair Value of Financial Instruments
Minimum [Member]
Note 2 - Investment Securities - Summary of Investment Securities (Details)
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Securities available-for-sale, gross unrealized losses
Note 2 - Investment Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details)
Securities available-for-sale, gross unrealized gains
Statistical Measurement [Domain]
Bank Servicing [Member]
Note 2 - Investment Securities - Investment Securities in a Continuous Unrealized Loss Position (Details)
Maximum [Member]
Note 3 - Loans Receivable - Summary of Loans Receivable (Details)
Note 3 - Loans Receivable - Allowance for Loan Losses Activity (Details)
Note 3 - Loans Receivable - Internal Classification of the Loan Portfolio (Details)
Note 3 - Loans Receivable - Delinquencies Within the Loan Portfolio (Details)
Note 3 - Loans Receivable - Collateral-dependent Loans (Details)
Note 3 - Loans Receivable - Schedule of Financing Receivable Restructuring (Details)
Note 4 - Mortgage Servicing Rights - Schedule of Activity in Mortgage Servicing Rights (Details)
Note 4 - Mortgage Servicing Rights - Fair Value of Servicing Rights (Details)
Note 5 - Deposits - Summary of Deposits (Details)
Payment Deferral and Extended Maturity [Member]
Represents payment deferral and extended maturity.
Note 6 - Other Long-term Debt - Summary of Other Long-term Debt (Details)
Note 6 - Other Long-term Debt - Summary of Other Long-term Debt (Details) (Parentheticals)
Note 7 - Accumulated Other Comprehensive Income (Loss) - Activity in Accumulated Other Comprehensive Income (Loss) (Details)
Note 8 - Earnings Per Common Share - Computations of Basic and Diluted Earnings Per Share (Details)
Note 9 - Derivatives and Hedging Activities - Derivatives (Details)
Note 10 - Fair Value of Financial Instruments - Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis (Details)
Note 10 - Fair Value of Financial Instruments - Financial Assets and Financial Liabilities Measured at Fair Value on a Nonrecurring Basis (Details)
Note 10 - Fair Value of Financial Instruments - Financial Assets and Liabilities, Valuation Techniques and Significant Unobservable Inputs (Details)
Collateral-dependent Loans [Table Text Block]
Tabular disclosure of collateral-dependent loans.
Note 10 - Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs on Recurring Basis (Details)
Note 10 - Fair Value of Financial Instruments - Estimated Fair Value and Carrying Amounts of Financial Instruments (Details)
Notes To Financial Statements
Other [Member]
Represents other.
Notes To Financial Statements [Abstract]
Counterparty Name [Axis]
Business Assets [Member]
Related to business assets.
Salaries and employee benefits
us-gaap_DividendsCash
Dividends paid
Financial Instruments [Domain]
Counterparty Name [Domain]
Available for sale debt securities, continuous unrealized loss position for 12 months or longer, fair value
Available for sale debt securities, continuous unrealized loss position less than 12 months, fair value
Financial Instruments Owned and Pledged as Collateral [Table]
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Preferred stock (par value $0.01 per share; 1,000,000 shares authorized; no shares issued or outstanding)
us-gaap_Liabilities
Total liabilities
LIABILITIES:
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and shareholders' equity
Treasury stock reissued, cost per share (in dollars per share)
Represents the average per share cost of Treasury Stock reissued during the period.
Pledged Status [Domain]
Pledged Status [Axis]
Right-of-use assets obtained in exchange for lease liabilities
Amount of increase in right-of-use asset obtained in exchange for operating lease liability.
Net change in:
Preferred stock, shares issued (in shares)
Preferred stock, shares outstanding (in shares)
Preferred stock, shares authorized (in shares)
Other interest income
Other long-term debt:
Portion at Fair Value Measurement [Member]
Reported Value Measurement [Member]
Fair Value, by Balance Sheet Grouping [Table]
Preferred stock, par value (in dollars per share)
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
NET DECREASE IN CASH AND CASH EQUIVALENTS
us-gaap_CashAndCashEquivalentsFairValueDisclosure
Cash and cash equivalents
Estimate of Fair Value Measurement [Member]
Dividends paid, per share (in dollars per share)
Mortgage servicing rights recognized
us-gaap_ServicingAssetAtFairValueAmount
Mortgage servicing rights
Basis of Presentation and Use of Estimates [Policy Text Block]
The entire disclosure of the basis of presentation and the use of estimates.
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
CASH AND CASH EQUIVALENTS, beginning of period
CASH AND CASH EQUIVALENTS, end of period
Mortgage servicing rights capitalized
Mortgage servicing rights, net
US Government Agencies Debt Securities [Member]
Statement [Table]
us-gaap_TimeDeposits
Time Deposits
Accrued expenses and other liabilities
us-gaap_LoansReceivableFairValueDisclosure
Loans receivable, gross
Debt instrument, variable interest rate
Debt Instrument, Basis Spread on Variable Rate
us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure
FHLB stock
us-gaap_DerivativeLiabilities
Derivative liabilities
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Financing Receivable, Past Due [Table Text Block]
FHLB advances and other borrowings
Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer as well as the carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo.
us-gaap_EscrowDeposit
Escrow Deposit
Long-Term Debt, Type [Axis]
Financing Receivable Credit Quality Indicators [Table Text Block]
us-gaap_FederalFundsPurchasedFairValueDisclosure
Federal Funds Purchased
Product and Service [Domain]
Financing Receivable, Modified [Table Text Block]
Product and Service [Axis]
Ownership [Axis]
Ownership [Domain]
Decrease in commitments to invest in Low-Income Housing Tax Credit projects
Amount of commitment or contingent commitments to qualified affordable housing project investments.
FHLB advances and other borrowings
ebmt_InterestExpenseFederalHomeLoanBankAdvanceAndOtherBorrowings
Interest expense incurred during the reporting period on long-term borrowings associated with Federal Home Loan Bank and Federal Reserve Bank advances, as well as gross expenses on securities sold coupled with an agreement to repurchase the same from the same counterparty at a fixed or determinable price within a fixed or variable time period.
Collateralized Mortgage Obligations [Member]
Asset Class [Axis]
Interest and fees on loans
Unallocated ESOP Shares [Member]
The shares in a company's Employee Stock Ownership Plan (ESOP) that have not been allocated to participants.
Gain (Loss) on Securities [Table Text Block]
ebmt_PolicyTable
Assets [Abstract]
Measurement Frequency [Axis]
Statement [Line Items]
Fair Value Hierarchy and NAV [Axis]
Common stock, shares issued (in shares)
Common stock, shares outstanding (in shares)
ebmt_LoansServicedDuringThePeriod
Loans Serviced During the Period
Represents the amount of loans serviced during the period.
Loans Excluding Unfunded Commitments [Member]
Relating to loans excluding unfunded commitments.
Common stock, shares authorized (in shares)
Advances on long-term FHLB and other borrowings
ebmt_MortgageServicingRightsMeasuredAtFairValue
Mortgage Servicing Rights Measured at Fair Value
Represents the amount of mortgage servicing rights measured at fair value as of the reporting period.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Activities in Mortgage Servicing Rights [Table Text Block]
Tabular disclosure for activities in mortgage servicing rights.
ESOP shares allocated or committed to be released for allocation, shares (in shares)
Number of shares committed to be released under Employee Stock Ownership Plan (ESOP).
ESOP shares allocated
Value of shares committed to be released under Employee Stock Ownership Plan (ESOP).
Common stock (par value $0.01 per share; 20,000,000 shares authorized; 8,507,429 shares issued at June 30, 2026 and December 31, 2025; 7,965,431 shares outstanding at June 30, 2026 and 7,957,769 shares outstanding at December 31, 2025)
Net short-term advances on FHLB and other borrowings
Amount of cash inflow (outflow) for short-term advances from Federal Home Loan Bank and other borrowings.
Amortization of right-of-use assets
us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestments
Investment, Proportional Amortization Method, Elected, Amount
Insurance proceeds related to premises and equipment
us-gaap_QualifiedAffordableHousingProjectInvestmentsCommitment
Investment Program, Proportional Amortization Method, Elected, Commitment
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Comprehensive Income (Loss) Note [Text Block]
us-gaap_ComprehensiveIncomeNetOfTax
COMPREHENSIVE INCOME
Federal funds purchased
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
Maturities, principal payments and calls
Mortgage loans held-for-sale, at fair value
us-gaap_ServicingAssetAtAmortizedValueAmortization1
Amortization of mortgage servicing rights
Construction Loans [Member]
Unrealized gains (losses) related to items held during the period
Federal Home Loan Bank ("FHLB") stock
us-gaap_LongTermDebt
Total other long-term debt, net
OTHER ITEMS OF COMPREHENSIVE INCOME:
Statement of Stockholders' Equity [Abstract]
Statement of Comprehensive Income [Abstract]
Loan Restructuring Modification [Axis]
Software subscriptions
The amount of expense incurred in the period for software subscriptions.
Loan Restructuring Modification [Domain]
Proceeds from sales of loans held-for-sale
Statement of Cash Flows [Abstract]
Financing Receivable Portfolio Segment [Axis]
Mortgage-backed Securities and Collateralized Mortgage Obligations [Member]
Securities collateralized by mortgage loans and/or a pool of assets.
Other comprehensive income, net of tax
Total other comprehensive income (loss), net of tax
Long-Term Debt, Type [Domain]
SHAREHOLDERS' EQUITY:
Equity Components [Axis]
Interest Rate Forward Commitments [Member]
Represents information pertaining to the Interest Rate Forward Commitments.
Asset Pledged as Collateral without Right [Member]
Financing Receivable Portfolio Segment [Domain]
Equity Component [Domain]
Fair Value Measurements, Nonrecurring [Table Text Block]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Fair Value, Inputs, Level 1 [Member]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Corporate Debt Securities [Member]
us-gaap_CostOfGoodsAndServicesSold
Cost of Product and Service Sold
Real Estate [Member]
Schedule of Gain (Loss) on Securities [Table]
Subordinated Debt [Member]
us-gaap_SubordinatedDebt
Subordinated Debt, Ending Balance
Premises and equipment, net
Financial Asset, Aging [Axis]
us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss
Deferred tax asset, net
Financial Asset, Aging [Domain]
Provision for credit losses
Provision for credit losses
Amortized cost
Stock compensation expense
Allowance for Credit Loss
Allowance for credit losses
Balances
Balances
Opportunity Bank of Montana [Member]
Information pertaining to the Opportunity Bank of Montana.
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Securities available-for-sale, ACL
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest
3.50% Subordinated Notes Due in 2032 [Member]
Information pertaining to the 3.50% subordinated notes due in 2032.
Financing Receivable, Year Five
Financing Receivable, prior
Financing Receivable, Year Three
Financing Receivable, Year Four
Financing Receivable, Year One
Fair Value, by Balance Sheet Grouping [Table Text Block]
Other noninterest income
Financing Receivable, Year Two
SUPPLEMENTAL CASH FLOW INFORMATION:
Financing Receivable, revolving
Measurement Input, Weighted Average Prepayment Rate [Member]
Measurement input using weighted average principal prepayment at other than constant rate as proportion of outstanding loan principal.
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Secured Overnight Financing Rate (SOFR) [Member]
us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Net amortization of investment securities premiums and discounts
us-gaap_LongTermDebtFairValue
Other long-term debt
United States Department of Agriculture Rural Development [Member]
Loans guaranteed by the United States Department of Agriculture Rural Development.
us-gaap_LoansHeldForSaleFairValueDisclosure
Loans held-for-sale
Collateral Held [Domain]
Modified, Number
Modified, Number
The number of financing receivable, excluding accrued interest, of modified during period for debtor experiencing financial difficulty.
Accrued interest and dividends receivable
Collateral Held [Axis]
us-gaap_InvestmentProportionalAmortizationMethodElectedStatementOfFinancialPositionExtensibleEnumeration
Investment, Proportional Amortization Method, Elected, Statement of Financial Position [Extensible Enumeration]
us-gaap_FeesAndCommissionsMortgageBankingAndServicing
Fees and Commissions, Mortgage Banking and Servicing
Derivative Instruments and Hedging Activities Disclosures [Table]
Long-Term Debt [Text Block]
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Net gain on sale/disposal of premises and equipment
Accumulated other comprehensive loss, net of tax
Impaired Loans and Real Estate and Other Repossessed Assets [Member]
Information pertaining to impaired loans and real estate and other repossessed assets.
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
INCOME BEFORE PROVISION FOR INCOME TAXES
Data processing
Additional paid-in capital
Federal Reserve Bank ("FRB") stock
Subsequent Events, Policy [Policy Text Block]
Appreciation in cash surrender value of life insurance
The gross change in cash surrender or contract value during the period which adjusted the amount of premiums paid in determining the expense or income recognized under the contract for the period.
Segment Reporting, Policy [Policy Text Block]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of premises and equipment, net
One-to-Four Family Loans [Member]
Loan to finance the purchase of a one-to-four family building.
us-gaap_MinorityInterestOwnershipPercentageByParent
Subsidiary, Ownership Percentage, Parent
Collateralized Mortgage-Backed Securities [Member]
Home Equity Portfolio Segment [Member]
Portfolio segment of the company's total financing receivables related to home equity.
us-gaap_NoninterestExpense
Total noninterest expense
Principal amount
Debt Instrument, Face Amount
NONINTEREST EXPENSE:
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Financial Asset, Not Past Due [Member]
ebmt_TrustPreferredSecuritiesMaximumDividendDeferringPeriod
Trust Preferred Securities, Maximum Dividend Deferring Period (Year)
The maximum dividend deferral period on trust preferred securities.
Debt instrument, maturity year
Date when the debt instrument is schedule to be fully repaid, in CCYY format.
Fair Value, Recurring and Nonrecurring [Table]
us-gaap_GrossProfit
Gross Profit
Compensation expense related to restricted stock awards
Debt Instrument, Name [Domain]
Eagle Bancorp Statutory Trust I [Member]
Represents the Eagle Bancorp Statutory Trust I.
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Debt instrument, fixed interest rate
Debt Instrument, Interest Rate, Stated Percentage
First Tennessee Bank, N.A. [Member]
Represents the First Tennessee Bank, N.A.
Fair Value Measurement Inputs and Valuation Techniques [Table]
us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
Amounts reclassified from accumulated other comprehensive loss, before income taxes
Depreciation
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
Variable Interest Rate Subordinated Debentures Due in 2035 [Member]
Represents variable interest rate subordinated debentures due in 2035.
Other comprehensive income, before reclassifications and income taxes
Treasury stock purchased, shares (in shares)
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
us-gaap_TreasuryStockValue
Treasury stock, at cost (541,998 shares at June 30, 2026 and 549,660 shares at December 31, 2025)
us-gaap_UnrealizedGainLossOnDerivatives
Unrealized Gain (Loss) on Derivatives
CASH FLOWS FROM OPERATING ACTIVITIES:
Treasury stock reissued for stock incentive plans
CASH FLOWS FROM INVESTING ACTIVITIES:
Treasury stock reissued, shares (in shares)
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash (used in) provided by operating activities
CASH FLOWS FROM FINANCING ACTIVITIES:
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
Treasury stock, average cost per share (in dollars per share)
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt
Purchases
us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
Proceeds from Sale of Debt Securities, Available-for-Sale
us-gaap_TemporaryEquityLiquidationPreference
Temporary Equity, Liquidation Preference
us-gaap_GoodwillImpairmentLoss
Goodwill, Impairment Loss
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Advertising
Net increase in deposits
Accounting Policies [Abstract]
US Treasury and Government [Member]
us-gaap_UnamortizedDebtIssuanceExpense
Unamortized debt issuance costs
us-gaap_IncreaseDecreaseInInterestAndDividendsReceivable
Accrued interest and dividends receivable
US States and Political Subdivisions Debt Securities [Member]
Loans receivable, net of allowance for credit losses of $17,640 at June 30, 2026 and $17,370 at December 31, 2025
Total loans, net
Measurement Input Type [Axis]
us-gaap_PaymentsForProceedsFromLoansAndLeases
Loan origination and principal collection, net
Income Statement [Abstract]
Securities available-for-sale, at fair value (amortized cost of $303,767 at June 30, 2026 and $299,162 at December 31, 2025)
Debt Securities, Available-for-Sale, Excluding Accrued Interest
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Treasury shares (in shares)
Measurement Input, Discount Rate [Member]
Treasury Stock, Common [Member]
Net income
NET INCOME
Measurement Input, Prepayment Rate [Member]
Purchases and issuances
Amount of purchases and issuance of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
Net income available to common shareholders
Financial Asset, Past Due [Member]
Measurement Input, Pull-through Expectations [Member]
Measurement input using pull-through expectation.
us-gaap_AmortizationOfMortgageServicingRightsMSRs
Amortization of mortgage servicing rights
Sales and settlements
Amount of sales and settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.
Amortization of core deposit intangibles
Amortization
ebmt_ServicingAssetAtAmortizedCostBeforeValuationAllowance
Beginning balance
Mortgage servicing rights, net
Amortized amount of servicing asset at amortized cost before valuation allowance.
Measurement Input Type [Domain]
us-gaap_InterestIncomeExpenseNet
NET INTEREST INCOME
us-gaap_DerivativeAssetMeasurementInput
Interest rate lock commitments, input
Accumulated Other Comprehensive Income (Loss) [Table]
Premises and equipment acquired through non-cash trade-in
Valuation assumptions
Accounting Standards Update and Change in Accounting Principle [Table]
Asset-Backed Securities [Member]
Mortgage Servicing Rights [Member]
Represents information relating to mortgage servicing rights.
NON-CASH OPERATING, INVESTING AND FINANCING ACTIVITIES:
Non-accrual Loans, no allowance
Occupancy and equipment expense
Other noninterest expense
Loan costs
us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue
Net appreciation in cash surrender value of life insurance
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury stock purchased
us-gaap_NoninterestIncome
Total noninterest income
NONINTEREST INCOME:
Transfers and Servicing of Financial Assets [Text Block]
Impaired loans
This element represents loans classified as impaired measured at fair value.
Measurement Basis [Axis]
us-gaap_GainsLossesOnSalesOfOtherRealEstate
Net loss on sale of real estate owned and other repossessed assets
Fair Value Hierarchy and NAV [Domain]
us-gaap_GainLossOnSalesOfLoansNet
Net gain on sale of loans
Loans transferred to real estate and other assets acquired in foreclosure
Measurement Frequency [Domain]
Statement of Financial Position [Abstract]
Deposit Liability [Table]
us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal
(Recapture) provision
Cash paid during the period for income taxes, net of refunds
ebmt_InvestmentInFederalReserveBankStockFairValueDisclosure
FRB stock
Fair value portion of investments in Federal Reserve Bank stock.
Recoveries
Other Assets
Current-period gross charge-offs, total
Charge-offs
ebmt_TimeCertificatesOfDepositFairValueDisclosure
Time certificates of deposit
The fair value portion of time certificates of deposit held by the entity.
Professional and examination fees
Fair Value, Nonrecurring [Member]
ebmt_AdvancesFromFederalHomeLoanBankAndOtherBorrowingsFairValueDisclosure
FHLB advances and other borrowings
The fair value portion of borrowing from the Federal Home Loan Bank and other borrowings.
Fair Value, Recurring [Member]
us-gaap_PaymentsForProceedsFromFederalHomeLoanBankStock
FHLB stock (purchased) redeemed
us-gaap_PaymentsForRepurchaseOfCommonStock
Purchase of treasury stock
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
Document Type
Document Information [Line Items]
Document Quarterly Report
Document Information [Table]
Restricted stock units excluded from the diluted average outstanding share calculation because their effect would be anti-dilutive (in shares)
Entity Interactive Data Current
Document Transition Report
Diluted weighted average shares outstanding (in shares)
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
Total available for sale securities debt maturities, amortized cost
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate
Total available for sale securities, debt maturities, fair value
Dilutive effect of stock compensation (in shares)
Basic weighted average shares outstanding (in shares)
BASIC EARNINGS PER COMMON SHARE (in dollars per share)
Nonaccrual, with ACL
Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table]
Interest-bearing
us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
Balance
Balance
us-gaap_Deposits
Total deposits
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Deposit Liabilities Disclosures [Text Block]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
us-gaap_DepositsMoneyMarketDeposits
Money market
Financing Receivables, 30 to 89 Days Past Due [Member]
Financing receiables that are more than 29 days past due but fewer than 90 days past due.
Noninterest-bearing
Noninterest checking
Core deposit intangible, net
Document Fiscal Period Focus
Document Fiscal Year Focus
us-gaap_DepositsSavingsDeposits
Savings
Amendment Flag
ESOP compensation expense for allocated shares
ebmt_EmployeeStockOwnershipPlanEsopCompensationExpenseForAllocatedShares
The amount of compensation expense for allocated shares in an employee stock ownership plan (ESOP) during the period.
Common Stock [Member]
Financing Receivable, Past Due [Table]
Goodwill
Document Period End Date
INTEREST AND DIVIDEND INCOME:
FHLB and FRB dividends
Residential Portfolio Segment [Member]
Legal Entity [Axis]
us-gaap_InterestAndDividendIncomeOperating
Total interest and dividend income
Consumer Portfolio Segment [Member]
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Table]
Commercial Portfolio Segment [Member]
Entity File Number
(Decrease) increase in fair value of securities available-for-sale
Entity Tax Identification Number
Fair value, asset
Fair value, liability
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Available for sale debt securities, continuous unrealized loss position less than 12 months, gross unrealized losses
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Available for sale debt securities, continuous unrealized loss position for 12 months or longer, gross unrealized losses
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
Doubtful [Member]
Entity Current Reporting Status
Special Mention [Member]
Substandard [Member]
Entity Incorporation, State or Country Code
Pass [Member]
Current Fiscal Year End Date
us-gaap_InterestBearingDomesticDepositChecking
Interest-bearing checking
us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
Income tax provision
Entity Filer Category
Entity Shell Company
us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
Income tax (provision) benefit related to securities available-for-sale
Entity Emerging Growth Company
Notional amount
Entity Small Business
Valuation Approach and Technique [Axis]
us-gaap_InterestIncomeDebtSecuritiesAvailableForSaleOperating
Securities available-for-sale
Hedging Designation [Domain]
us-gaap_DerivativeAssets
Derivative assets
Forward TBA Mortgage-backed Securities [Member]
Information pertaining to forward TBA mortgage-backed securities.
Financing Receivable, Modified [Table]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
INTEREST EXPENSE:
Interest-bearing deposits in banks
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Valuation Approach and Technique [Domain]
Valuation, Market Approach [Member]
Valuation, Income Approach [Member]
Deposits
Entity Address, State or Province
us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale
Originations of loans held-for-sale
Entity Address, City or Town
Marketable Securities [Table]
Retained earnings
us-gaap_InterestExpenseOperating
Total interest expense
Entity Address, Address Line One
us-gaap_GainOnBusinessInterruptionInsuranceRecovery
Net gain on insurance proceeds related to premises and equipment
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
City Area Code
Available for sale securities, due from one to five years, amortized cost
Available for sale securities, due from five to ten years, amortized cost
Local Phone Number
Available for sale securities, due in one year or less, amortized cost
Entity Address, Postal Zip Code
Accrued expenses and other liabilities
us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities
Preferred Stock [Member]
Available for sale securities, without single maturity, fair value
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
Title of 12(b) Security
Security Exchange Name
Available for sale securities, due from five to ten years, fair value
Trading Symbol
Available for sale securities, due after ten years, fair value
Available for sale securities, due in one year or less, fair value
Available for sale securities, due from one to five years, fair value
Available for sale securities, due after ten years, amortized cost
Available for sale securities, without single maturity, amortized cost
Class of Stock [Axis]
Class of Financing Receivable [Axis]
Variable Rate [Domain]
Class of Financing Receivable [Domain]
Entity Common Stock, Shares Outstanding
Earnings Per Share [Text Block]
ebmt_UnearnedESOPSharesCost
Unallocated common stock held by Employee Stock Ownership Plan ("ESOP")
Cost of unearned shares that qualify as permanent equity that are held by an employee stock ownership plan (ESOP)
Hedging Designation [Axis]
Other long-term debt
Financing Receivable, Credit Quality Indicator [Table]
Change in fair value of investment securities available-for-sale
Loans receivable
Internal Credit Assessment [Axis]
Federal Deposit Insurance Corporation ("FDIC") insurance premiums
Amount of the premium for Federal Deposit Insurance Corporation (FDIC) insurance.
Guarantor Obligations, Nature [Domain]
5.50% Subordinated Notes Due in 2030 [Member]
Information pertaining to the 5.50% subordinated notes due in 2030.
Scenario [Axis]
us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES
Guarantor Obligations, Nature [Axis]
Scenario [Domain]
Forecast [Member]
Investments Classified by Contractual Maturity Date [Table Text Block]
Internal Credit Assessment [Domain]
Common stock, par value (in dollars per share)
Cash and due from banks
us-gaap_Assets
Total assets
Farmland Loan [Member]
Information pertaining to farmland loan.
Designated as Hedging Instrument [Member]
Commercial Construction and Development Portfolio Segment [Member]
Portfolio segment of the company's total financing receivables related to commercial construction and development.
us-gaap_CashAndCashEquivalentsAtCarryingValue
Total cash and cash equivalents
Modified, Amortized cost
us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod
One-to-Four Family Construction [Member]
Loan to finance the purchase of a one-to-four family construction.
Total Financing Receivables, Percentage
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)
Commodity Sales [Member]
Relating to commodity sales.
us-gaap_ContractWithCustomerLiability
Contract with Customer, Liability
ebmt_RepossessedAssetsMeasurementInput
Real estate and other repossessed assets, input
Value of input used to measure repossessed assets.
Collateral-dependent loans individually evaluated
Value of input used to measure impaired loans.
Asset Class [Domain]
Schedule of Derivative Instruments [Table Text Block]
Commercial Real Estate Loan [Member]
Information pertaining to the commercial real estate loan.
Accounts and Financing Receivables [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Commercial Loans [Member]
Information pertaining to the commercial loan.
Consolidation, Policy [Policy Text Block]
Agricultural Loan [Member]
Information pertaining to the agricultural loan.
Participating Mortgage Loans [Table]
Cash paid during the period for interest
Cash surrender value of life insurance, net
Interest Rate Lock Commitments [Member]
Schedule of Long-Term Debt Instruments [Table Text Block]
ebmt_InterestReceivedOnPastDueLoansAppliedToPrincipal
Interest Received on Past Due Loans, Applied to Principal
The amount of interest income received on past due loans, applied directly to principal.
Current-period gross charge-offs, prior
Current-period gross charge-offs, revolving
Current-period gross charge-offs, year four
Current-period gross charge-offs, year five
Current-period gross charge-offs, year two
Current-period gross charge-offs, year three
Extended Maturity and Interest Rate Reduction [Member]
Current-period gross charge-offs, year one
Deposit Liabilities, Type [Table Text Block]
Fixed Rate Brokered Certificates of Deposit [Member]
Represents Fixed Rate Brokered Certificates of Deposit.
us-gaap_StockholdersEquity
Total shareholders' equity
Balance
Balance
us-gaap_PaymentsOfDividends
Dividends paid
us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings
Payments on long-term FHLB and other borrowings
us-gaap_NumberOfStores
Number of Stores
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Noninterest income revenue
Revenue from Contract with Customer, Including Assessed Tax
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Marketable Securities [Table Text Block]