2021 Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Revolving Loans Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Proceeds from sale of securities available-for-sale, net Proceeds from sales of securities Proceeds from Sale of Debt Securities, Available-for-Sale To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum Other interest income Interest Income, Other Award Type [Domain] Award Type [Domain] Non-interest-bearing deposits Noninterest-Bearing Deposit Liabilities Fair Value as of Grant Date Award Grant Date Fair Value Investment, Name [Domain] Investment, Name [Domain] 2024 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff IT related Information Technology and Data Processing Taxable securities Interest Income, Securities, Operating, Taxable Total lease income Lease Income Equipment rentals, depreciation and maintenance Equipment Expense Sales of restricted stock Proceeds from Sale of Restricted Investments Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Insider Trading Policies and Procedures [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Current Loans Financial Asset, Not Past Due [Member] Proceeds from employee stock purchase program Proceeds from Stock Plans Ownership [Axis] Ownership [Axis] Income from company-owned life insurance Income from company-owned life insurance Bank Owned Life Insurance Income Summit Financial Group, Inc Summit Financial Group, Inc [Member] Summit Financial Group, Inc Performance-based RSUs Performance-based Restricted Stock Units [Member] Performance-based Restricted Stock Units Preferred Stock, $1.00 par value per share; 2,000,000 shares authorized; no shares issued or outstanding Preferred Stock, Value, Issued Time deposits, individual retirement account Interest-Bearing Domestic Deposit, Other Time Deposit Restricted stock, at cost Restricted Investments Subsequent Event Type [Domain] Subsequent Event Type [Domain] Diluted (in usd per share) Diluted EPS (in usd per share) Earnings Per Share, Diluted Reclassification adjustment for loss (gain) included in net income, net of tax ($94) and ($76) for the three months ended March 31, 2024, and March 31, 2023, respectively Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Supplemental Disclosures of Cash Flow Information Supplemental Cash Flow Elements [Abstract] Accounting standards update Accounting Standards Update [Extensible Enumeration] Short-Term Debt Short-Term Debt [Member] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Trading Symbol Trading Symbol Fair Value Disclosures [Abstract] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Liquidity Liquidity [Member] Liquidity Accrued interest and other liabilities Interest Payable And Other Liabilities Interest Payable And Other Liabilities Total undiscounted lease payments Lessor, Operating Lease, Payment to be Received Employee Stock Employee Stock [Member] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Shareholders’ Equity Equity, Attributable to Parent [Abstract] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] (Gain) on loans held-for-sale Gain (Loss) on Sales of Loans, Net Executive Category: Executive Category [Axis] FDIC & other regulatory assessment Federal Deposit Insurance Corporation Premium Expense 2028 Lessor, Operating Lease, Payment to be Received, Year Four Net change in pension plan benefits Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Level 1 Fair Value, Inputs, Level 1 [Member] Interest expense Interest Expense [Abstract] Actual Amount Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual Carrying Amount Reported Value Measurement [Member] Equity Components [Axis] Equity Components [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Hedging Relationship [Domain] Hedging Relationship [Domain] Number of shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Allowance for credit losses Balance, beginning of period Balance, end of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Entity Small Business Entity Small Business Interest paid to depositors Interest Paid, Deposits Interest Paid, Deposits Residential mortgage backed - agency Residential Mortgage-Backed Securities - Agency [Member] Residential Mortgage-Backed Securities - Agency Local Phone Number Local Phone Number Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Commercial letters of credit Letter of Credit [Member] Amount of gain or (loss) reclassified from AOCI into income as a result that a forecasted transaction is no longer probable of occurring Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), Adjustments, before Tax Notional Amount Derivative, Notional Amount Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Less: net realized (gains) losses reclassified to earnings Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Schedule of Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Lessor, Lease, Description [Table] Lessor, Lease, Description [Table] Sale of treasury stock Proceeds from Sale of Treasury Stock Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Change in fair value of loans held-for-sale Gain (Loss) On Loans Held-For-Sale, Fair Value Adjustment Gain (Loss) On Loans Held-For-Sale, Fair Value Adjustment Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] After Ten Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Short-Term Debt [Line Items] Short-Term Debt [Line Items] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Other Other Expenses Non-interest-bearing Non-Interest Bearing [Member] Non-Interest Bearing Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Merger related expenses Business Combination, Acquisition Related Costs Stock awards antidilutive (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Award Type [Axis] Award Type [Axis] Special Mention Special Mention [Member] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Document Quarterly Report Document Quarterly Report Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Hedging Designation [Axis] Hedging Designation [Axis] Right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Credit loss liability expense (reversal) Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Less: discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Owner-occupied commercial real estate Owner-Occupied Commercial Real Estate [Member] Owner-Occupied Commercial Real Estate Leased Property Lessee, Finance Leases [Text Block] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Interest expense Finance Lease, Interest Expense Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Shares purchased (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Advance from Federal Home Loan Bank, Fiscal Year Maturity [Abstract] Advance from Federal Home Loan Bank, Fiscal Year Maturity [Abstract] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three Net unrealized gains (losses) OCI, before Reclassifications, Net of Tax, Attributable to Parent Recently adopted accounting standards and Pending adoption of new accounting standards New Accounting Pronouncements, Policy [Policy Text Block] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Remaining nine months ending, December 31, 2024 Time Deposit Maturities, Remainder of Fiscal Year 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Security Exchange Name Security Exchange Name Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Employee Stock Option Employee Stock Option [Member] Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum Loss Unlikely to be Collected Financing Receivable [Member] Individually evaluated loans Fair Value Financing Receivable, Individually Evaluated for Impairment Maximum Maximum [Member] Document Type Document Type Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Tabular List, Table Tabular List [Table Text Block] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Tax-exempt securities Interest Income, Securities, Operating, Tax Exempt 2027 Finance Lease, Liability, to be Paid, Year Three Net gains/(losses) on securities Realized loss (gain) on sales of available-for-sale securities Debt and Equity Securities, Gain (Loss) Share-Based Compensation Share-Based Payment Arrangement [Text Block] Unrealized gain (loss) on securities: Debt Securities, Unrealized Gain (Loss) [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Purchases of securities available-for-sale, net Payments to Acquire Debt Securities, Available-for-Sale Remaining nine months ending December 31, 2024 Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year Business Acquisition [Axis] Business Acquisition [Axis] 2025 Lessor, Operating Lease, Payment to be Received, Year One Revenue from contract with customer Revenue from Contract with Customer, Including Assessed Tax Title of 12(b) Security Title of 12(b) Security Amortized Cost Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss 2026 Time Deposit Maturities, Year Two Total interest income Total pre-tax amount Interest Income, Operating To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Commercial & industrial Commercial Portfolio Segment [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Beginning nonvested (in usd per share) Ending nonvested (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Unrealized gain (loss) arising during period, tax expense (benefit) OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Share-Based Payment Arrangement [Abstract] Entity Tax Identification Number Entity Tax Identification Number Total lease cost Lease, Cost Fair value of liabilities Fair Value Hedge Liabilities Statistical Measurement [Axis] Statistical Measurement [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Entity Interactive Data Current Entity Interactive Data Current Schedule of Realized Gain (Loss) Schedule of Realized Gain (Loss) [Table Text Block] Unrealized gain (loss) on cash flow hedge: Cash Flow Hedges Derivative Instruments at Fair Value, Net [Abstract] Other assets Other Assets [Member] 2019 Stock Incentive Plan 2019 Stock Incentive Plan [Member] 2019 Stock Incentive Plan Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Measure: Measure [Axis] Commitments and Contingencies Disclosure [Abstract] Name Outstanding Recovery, Individual Name Unamortized loan fee Financing Receivable, Unamortized Loan Cost (Fee) Other Other Debt Obligations [Member] 2022 Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Total non-interest income Noninterest Income Operating cash flows from operating leases Operating Lease, Payments Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Common stock, outstanding (in shares) Beginning Balance (in shares) Ending Balance (in shares) Common Stock, Shares, Outstanding Other Income and Expenses [Abstract] PEO PEO [Member] Schedule of Lessor, Operating Lease, Payment to be Received, Maturity Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block] ATM & network expense ATM And Other Network Expenses ATM And Other Network Expenses Common stock, par value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Marketing expense Marketing Expense Finance Leases Finance Lease, Liability [Abstract] Net cash flows (used in) investing activities Net Cash Provided by (Used in) Investing Activities Amount of gain or (loss) reclassified from AOCI into income and income included component Amount of gain or (loss) reclassified from AOCI into income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Accounting and audit expenses Professional Fees Interest Rate Products Interest Rate Swap [Member] Debt Instrument [Axis] Debt Instrument [Axis] Securities in unrealized loss positions Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Measurement Input Type [Domain] Measurement Input Type [Domain] Remaining nine months ending December 31, 2024 Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Total Liabilities Liabilities Number of shares reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Measurement Frequency [Domain] Measurement Frequency [Domain] 2027 Lessor, Operating Lease, Payment to be Received, Year Three Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Borrowing funds for short-term debt Federal Home Loan Bank and Unsecured Federal Funds, Advances, General Debt Obligations, Amount of Available Borrowing Capacity Federal Home Loan Bank and Unsecured Federal Funds, Advances, General Debt Obligations, Amount of Available Borrowing Capacity Increase (decrease) in accrued interest payable and other liabilities Increase (Decrease) In Interest Payable And Other Liabilities Increase (Decrease) In Interest Payable And Other Liabilities Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Compensation expense recognized (in 000’s) Stock or Unit Option Plan Expense Less Than Twelve Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Pensions and other employee benefits Employee Benefits and Share-Based Compensation Loans, including fees Interest and Fee Income, Loans and Leases Lease liabilities: Operating and Finance Lease, Liability [Abstract] Operating and Finance Lease, Liability Interest rate for short-term debt Short-Term Debt, Weighted Average Interest Rate, at Point in Time Non-interest expense Noninterest Expense [Abstract] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Schedule of Short-Term Debt Schedule of Short-Term Debt [Table Text Block] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Commercial mortgage backed - agency Commercial Mortgage-Backed Securities - Agency [Member] Commercial Mortgage-Backed Securities - Agency Schedule of Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Charge-offs Total Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Realized tax expense (benefit) gain (loss) Gain (Loss), Investment and Derivative, Operating, Tax Expense (Benefit) Lease liability arising from obtaining right-of-use assets Right-of-Use Asset Obtained in Exchange for Operating and Finance Lease Liability Right-of-Use Asset Obtained in Exchange for Operating and Finance Lease Liability Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Granted (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] U.S. Treasuries and government agencies US Treasury and Government [Member] 2028 Finance Lease, Liability, to be Paid, Year Four Asset-backed Asset-Backed Securities [Member] Net cash flows provided by operating activities Net Cash Provided by (Used in) Operating Activities Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy With Buffer, Minimum Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy With Buffer, Minimum Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Paycheck Protection Program Paycheck Protection Program [Member] Paycheck Protection Program Depreciation and amortization of fixed assets Depreciation, Depletion and Amortization Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Gross realized gains Debt Securities, Available-for-Sale, Realized Gain Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Gains and Losses on Cash Flow Hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Securities and loans pledged Federal Home Loan Bank and Unsecured Federal Funds, Advances, General Debt Obligations, Disclosures, Collateral Pledged Federal Home Loan Bank and Unsecured Federal Funds, Advances, General Debt Obligations, Disclosures, Collateral Pledged Purchases of restricted stock Payments to Acquire Restricted Investments Preferred stock, issued (in shares) Preferred Stock, Shares Issued Entity Emerging Growth Company Entity Emerging Growth Company Fair Value Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Service charges and fees Service, Other [Member] Credit loss expense - loans and available-for-sale securities Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal), Loans And Debt Securities Available-For-Sale Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal), Loans And Debt Securities Available-For-Sale Consolidated Parent Company [Member] Net (decrease) in non-interest-bearing accounts Net Change Noninterest-Bearing Deposits, Domestic Loans held-for-sale, at fair value Loan, Held-for-Sale, Fair Value Disclosure Deposits Deposit Liabilities Disclosures [Text Block] 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Title Trading Arrangement, Individual Title Net interest income after credit loss expense Interest Income (Expense), after Provision for Loan Loss Retained earnings available to be declared as dividend Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval Common Stock Common Stock [Member] Interest Rate Lock Commitments Interest Rate Lock Commitments [Member] Individual: Individual [Axis] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Income Statement Location [Domain] Income Statement Location [Domain] Minimum Minimum [Member] Other non-interest income Noninterest Income, Other Operating Income Premises and equipment, net Property, Plant and Equipment, Net Number of branches Number of Real Estate Properties Cash flow hedge gain (loss) to be reclassified within 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Statement of Cash Flows [Abstract] Assets Assets [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] After Ten Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Repayment of operating lease liabilities Increase (Decrease) in Operating Lease Liability Liabilities Liabilities [Abstract] Net cash flows provided by financing activities Net Cash Provided by (Used in) Financing Activities Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Retained Earnings Retained Earnings [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Basic (in usd per share) Basic EPS (in usd per share) Earnings Per Share, Basic Accounting Policies [Abstract] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Common stock portion, number of Burke & Herbert stock for each share of Summit common stock converted (in shares) Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Actual Ratio Banking Regulation, Total Risk-Based Capital Ratio, Actual Income taxes Income Taxes Paid To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Interest Expense Interest Expense [Member] Reclassification adjustment for losses (gains) included in net income, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax 2020 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position [Abstract] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Derivative Instrument [Axis] Derivative Instrument [Axis] All Trading Arrangements All Trading Arrangements [Member] Substandard Substandard [Member] One Year or Less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Schedule of Fair Value, off-Balance-Sheet Risks Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Accrued interest Interest Payable And Other Liabilities, Fair Value Disclosure Interest Payable And Other Liabilities, Fair Value Disclosure Compensation Amount Outstanding Recovery Compensation Amount Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Amount Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy With Buffer, Minimum Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy With Buffer, Minimum Derivatives Derivative Asset Forfeited (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Appraisal of collateral Valuation Technique, Appraisal Of Collateral [Member] Valuation Technique, Appraisal Of Collateral Deferred tax (benefit) Deferred Income Tax Expense (Benefit) Subsequent Event Type [Axis] Subsequent Event Type [Axis] Statement of Comprehensive Income [Abstract] Finance leases Finance Lease, Liability Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Consideration payable (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Salaries and wages Salary and Wage, Excluding Cost of Good and Service Sold Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Borrowed funds Borrowed funds Short-Term Debt And Other Borrowings Short-Term Debt And Other Borrowings Other assets Other Assets Legal fees and expenses Legal Fees Options effect of dilutive shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Virginia franchise tax Taxes, Miscellaneous Prior Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Document Period End Date Document Period End Date Adoption Date Trading Arrangement Adoption Date Credit Loss [Abstract] Finance lease weighted average discount rate Finance Lease, Weighted Average Discount Rate, Percent Treasury Stock Treasury Stock, Common [Member] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] State and Municipal Securities State and Municipal Securities [Member] State and Municipal Securities Nature of Business Activities and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Loss on disposal of fixed assets Gain (Loss) on Disposition of Property Plant Equipment Income tax expense Tax effect Income Tax Expense (Benefit) Derivatives designated as hedges: Designated as Hedging Instrument [Member] Finance leases Finance Lease, Right-of-Use Asset, after Accumulated Amortization Vesting [Axis] Vesting [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Fair Value Measurements Fair Value Disclosures [Text Block] Lease term of contract Lessee, Lease, Term Of Contract Lessee, Lease, Term Of Contract Provision for (recapture of) credit losses Financing Receivable, Credit Loss, Expense (Reversal) More Than Twelve Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Equity [Abstract] Reclassification adjustment for loss (gain) on securities, net of tax of $— and $— for the three months ended March 31, 2024, and March 31, 2023, respectively Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Operating lease weighted average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Fiduciary and wealth management Fiduciary and Trust [Member] 60 - 89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Deposits Interest Expense, Deposits 2026 Lessor, Operating Lease, Payment to be Received, Year Two Less Than Twelve Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Schedule of Financing Receivable, Past Due Financing Receivable, Past Due [Table Text Block] Income, Market, & Discounted cash flow analysis Valuation Technique, Income, Market, And Discounted Cash Flow Analysis [Member] Valuation Technique, Income, Market, And Discounted Cash Flow Analysis Interest-earning deposits with banks Bank Time Deposits [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Proceeds from sale of loans held-for-sale Proceeds from Sale, Loan, Held-for-Sale Interest paid on other borrowed funds Interest Paid, Borrowings Interest Paid, Borrowings Deposit liabilities Deposits, Fair Value Disclosure Right-of-use assets obtained in exchange for new finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability 2022 Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Less: discount Finance Lease, Liability, Undiscounted Excess Amount Interest Income Interest Income [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Unrealized holding gain (loss) on cash flow hedge, net of tax of ($707) and ($13) for the three months ended March 31, 2024, and March 31, 2023, respectively Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax 30 - 59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] Securities unrealized loss Securities Unrealized Loss Securities Unrealized Loss Balance Sheet Location [Axis] Balance Sheet Location [Axis] Individually evaluated loans, measurement input Financing Receivable, Individually Evaluated For Impairment, Measurement Input Financing Receivable, Individually Evaluated For Impairment, Measurement Input Other liabilities Other Liabilities [Member] Cover [Abstract] Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Recurring Fair Value, Recurring [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Cash dividends paid Payments of Dividends Total lease receivables Lessee, Operating Lease, Liability, to be Paid 2020 Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff Operating Leases Operating Lease, Liability [Abstract] Tier 1 (Core) Capital to average assets Banking Regulation, Tier 1 Leverage Capital [Abstract] Cash Flow Hedging Cash Flow Hedging [Member] Right-of-use asset amortization Finance Lease, Right-of-Use Asset, Amortization Residential mortgage backed - non-agency Residential Mortgage-Backed Securities - Non-Agency [Member] Residential Mortgage-Backed Securities - Non-Agency Community Bankers' Bank Community Bankers' Bank [Member] Community Bankers' Bank Increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Equity Component [Domain] Equity Component [Domain] Commercial mortgage backed - non-agency Commercial Mortgage-Backed Securities - Non-Agency [Member] Commercial Mortgage-Backed Securities - Non-Agency Purchase price of common stock (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Entity Current Reporting Status Entity Current Reporting Status Amortized Cost, With Allowance Impaired Financing Receivable, with Related Allowance, Recorded Investment Consolidated Entities [Domain] Consolidated Entities [Domain] Total provision for (recapture of) credit losses Provision for (recapture of) credit losses Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) 2029 Time Deposit Maturities, Year Five Fair Value Amount Estimate of Fair Value Measurement [Member] Due in 2024 Short-Term Debt And Other Borrowings, Maturity, Remainder of Fiscal Year Short-Term Debt And Other Borrowings, Maturity, Remainder of Fiscal Year Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Brokered time deposits Interest-Bearing Domestic Deposit, Brokered Revolving Loans Financing Receivable, Excluding Accrued Interest, Revolving Consolidated Entities [Axis] Consolidated Entities [Axis] Pay vs Performance Disclosure [Line Items] 2023 Stock Incentive Plan 2023 Stock Incentive Plan [Member] 2023 Stock Incentive Plan Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing Financing Receivable, Excluding Accrued Interest, 90 Days or More Past Due, Still Accruing Statistical Measurement [Domain] Statistical Measurement [Domain] Schedule of Fair Value Disclosure of Asset and Liability Not Measured at Fair Value Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Beginning nonvested (in shares) Ending nonvested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum Advances and Other Borrowings Debt Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Restatement Determination Date: Restatement Determination Date [Axis] Investment, Name [Axis] Investment, Name [Axis] Commitments and contingent liabilities (see Note 10) Commitments and Contingencies Derivative asset, notional amount Derivative, Amount of Hedged Item Acquisition, construction & development Acquisition, Construction and Development [Member] Acquisition, Construction and Development Issuance of common stock Proceeds from Issuance of Common Stock Finance lease cost Income and Expenses, Lessee [Abstract] Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Amount Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum Realized gains (losses) on securities Debt Securities, Realized Gain (Loss) Schedule of Lessor, Lease Income Lessor, Lease Income [Table Text Block] Lessor, Lease Income Historic tax credit amortization Amortization of Historic Tax Credit Amortization of Historic Tax Credit Share-based compensation expense, net (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, Expense Shares Issued, Shares, Share-Based Payment Arrangement, Expense Preferred stock, par value per share (in dollars per share) Preferred Stock, Par or Stated Value Per Share Weighted-Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Consumer non-real estate and other Consumer Non-Real Estate and Other [Member] Consumer Non-Real Estate and Other Net loans Loans, net Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Derivative liability, fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset PEO Total Compensation Amount PEO Total Compensation Amount Hedging Relationship [Axis] Hedging Relationship [Axis] Operating Leases Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Leased Property Lessor, Operating Leases [Text Block] (Increase) decrease in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Securities available-for-sale, at fair value Fair Value Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Five to Ten Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Interest income Interest and Dividend Income, Operating [Abstract] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Schedule of Financing Receivable, Allowance for Credit Loss Financing Receivable, Allowance for Credit Loss [Table Text Block] Net income Net income Net income (in thousands) Net Income (Loss) Derivative Contract [Domain] Derivative Contract [Domain] 2026 Finance Lease, Liability, to be Paid, Year Two 90 Days or More Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Company Selected Measure Name Company Selected Measure Name One to Five Years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Leased Property Lessee, Operating Leases [Text Block] Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Entity Ex Transition Period Entity Ex Transition Period Schedule of Employee Stock Purchase Plan Schedule of Share-Based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Amount of gain or (loss) recognized in OCI on derivative and in OCI included component Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Interest-bearing Interest-Bearing Deposits [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Name Measure Name Name Forgone Recovery, Individual Name Accretion of securities Accretion Of Discounts And Premiums, Investments Accretion Of Discounts And Premiums, Investments Thereafter Lessor, Financing Lease, Payment to be Received, after Year Four Lessor, Financing Lease, Payment to be Received, after Year Four Measurement Basis [Axis] Measurement Basis [Axis] Underlying Securities Award Underlying Securities Amount Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Actual Ratio Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual Other borrowed funds Short-Term Debt And Other Borrowings, Fair Value Disclosure Short-Term Debt And Other Borrowings, Fair Value Disclosure Burke & Herbert Bank & Trust Subsidiaries [Member] Collateral Held [Axis] Collateral Held [Axis] Cash dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Unrealized gain (loss) arising during period, net of tax of $117 and ($4,577) for the three months ended March 31, 2024, and March 31, 2023, respectively OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Financing Receivable, Nonaccrual Financing Receivable, Nonaccrual To Be Well Capitalized Under Prompt Corrective Action Regulations Ratio Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Impact of the adoption of CECL Cumulative Effect, Period of Adoption, Adjustment [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Financial assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Total Capital to risk weighted assets Banking Regulation, Total Capital [Abstract] Asset Pledged as Collateral Asset Pledged as Collateral [Member] Schedule of Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Tier 1 (Core) Capital to risk weighted assets Banking Regulation, Tier 1 Risk-Based Capital [Abstract] Unused funds for short-term debt Federal Home Loan Bank and Unsecured Federal Funds, Advances, General Debt Obligations, Amount of Available, Unused Funds Federal Home Loan Bank and Unsecured Federal Funds, Advances, General Debt Obligations, Amount of Available, Unused Funds Pledged Status [Axis] Pledged Status [Axis] Commercial Mortgage Backed – Agency Securities Commercial Mortgage-Backed Securities [Member] Product and Service [Domain] Product and Service [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Lease, Cost Lease, Cost [Table Text Block] Credit loss expense - off-balance sheet credit exposures Financing Receivable, Excluding Accrued Interest, Off-Balance Sheet Credit Loss Expense (Reversal) Financing Receivable, Excluding Accrued Interest, Off-Balance Sheet Credit Loss Expense (Reversal) Cash Flows from Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Schedule of Assets and Liabilities, Lessee Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Regulatory Capital Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Plan Name [Domain] Plan Name [Domain] Total Past Due Financial Asset, Past Due [Member] Transfers from portfolio loans to loans held-for-sale Loan and Lease, Transfer from Held-in-Portfolio to Held-for-Sale Total interest expense Interest Expense Unrecognized compensation costs Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Shares authorized to be issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Trading Arrangement: Trading Arrangement [Axis] Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Amount Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum Schedule of Other Operating Cost and Expense, by Component Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Entity File Number Entity File Number Regulatory Capital Requirements under Banking Regulations [Abstract] Regulatory Capital Requirements under Banking Regulations [Abstract] Unrealized Gains and Losses on Available-for-Sale Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] 2025 Time Deposit Maturities, Year One Entity Shell Company Entity Shell Company Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Loans held-for-sale, at fair value Financing Receivable, Held-for-Sale Restatement Determination Date Restatement Determination Date Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Beginning of period End of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Amount of Gain or (Loss) Recognized in OCI Excluded Component Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments and Tax Operating lease cost Operating Lease, Cost More Than Twelve Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Common stock, issued (in shares) Common Stock, Shares, Issued Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Treasury stock 571,290 shares, at cost, at March 31, 2024, and 571,290 shares, at cost, at December 31, 2023 Treasury Stock, Common, Value AFS, Total Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Average period for cost to be recognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Ratio Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Entity Address, Address Line One Entity Address, Address Line One Financial liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Subsidiary, ownership percentage, parent Subsidiary, Ownership Percentage, Parent 2025 Finance Lease, Liability, to be Paid, Year One Unfunded Loan Commitment Unfunded Loan Commitment [Member] Actual Amount Banking Regulation, Total Capital, Actual Fair value of interest rate swaps Derivative, Fair Value, Net Subsequent Event Subsequent Event [Member] Eligible employees, subscription rate (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Employee Subscription Rate Change in unrealized gains on available-for-sale securities Debt Securities, Available-for-Sale, Unrealized Gain (Loss), after Adjustment and Tax Debt Securities, Available-for-Sale, Unrealized Gain (Loss), after Adjustment and Tax Income Statement [Abstract] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Interest-earning deposits with banks Cash and Cash Equivalents, Fair Value Disclosure Derivatives Derivative Liability Proceeds from (purchase of) company-owned life insurance Payments for (Proceeds from) Life Insurance Policies Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Consultant and advisory expenses Consultant And Advisory Expenses Consultant And Advisory Expenses Financial Instrument [Axis] Financial Instrument [Axis] Related Allowance Impaired Financing Receivable, Related Allowance Accrued interest receivable Interest Receivable Total Shareholder Return Amount Total Shareholder Return Amount Cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] 2028 Time Deposit Maturities, Year Four Retained earnings Retained Earnings (Accumulated Deficit) Collateral Held [Domain] Collateral Held [Domain] Leases [Abstract] Entity Address, State or Province Entity Address, State or Province Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Total undiscounted lease payments Finance Lease, Liability, to be Paid Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Proceeds from maturities, prepayments, and calls of securities available-for-sale, net Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Non-interest income Noninterest Income [Abstract] Cash payments for: Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Valuation Technique, Appraisal Of Collateral For Selling Costs Valuation Technique, Appraisal Of Collateral For Selling Costs [Member] Valuation Technique, Appraisal Of Collateral For Selling Costs Derivative asset, fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Actual Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Reclassification adjustment for loss (gain) on securities, tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Schedule of Fair Value, off-Balance-Sheet Risks [Table] Schedule of Fair Value, off-Balance-Sheet Risks [Table] Schedule of Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Management adjustments (e.g. liquidity, selling costs, etc.) Measurement Input, Management Adjustments [Member] Measurement Input, Management Adjustments Operating leases Operating Lease, Liability Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Vesting [Domain] Vesting [Domain] Comprehensive Income (Loss) Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount All Executive Categories All Executive Categories [Member] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Total non-interest expense Noninterest Expense Total Time Deposits Defined Benefit Pension Items Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Plan Name [Axis] Plan Name [Axis] Financial Services, Banking and Thrift [Abstract] Financial Services, Banking and Thrift [Abstract] Debt Disclosure [Abstract] Right-of-use assets: Assets and Liabilities, Lessee [Abstract] Total income tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Earnings per common share: Earnings Per Share [Abstract] Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Ratio Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Hedging items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Due in 2025 Short-Term Debt And Other Borrowings, Maturity, Year One Short-Term Debt And Other Borrowings, Maturity, Year One Common Stock $0.50 par value; 20,000,000 shares authorized and 8,011,315 issued at March 31, 2024, and 8,000,000 issued at December 31, 2023; 7,440,025 shares outstanding at March 31, 2024, and 7,428,710 shares outstanding at December 31, 2023 Common Stock, Value, Issued One to Five Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Allowance for credit loss on available for sale debt securities Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Schedule of Fair Value Measurements, Nonrecurring Fair Value Measurements, Nonrecurring [Table Text Block] Commitments to extend credit Unused lines of Credit [Member] Amortization of securities Amortization Of Discounts And Premiums, Investments Amortization Of Discounts And Premiums, Investments Accrued interest Accrued Interest Receivable, Fair Value Disclosure Accrued Interest Receivable, Fair Value Disclosure Interest bearing deposit, certificates of deposits Interest-Bearing Domestic Deposit, Certificates of Deposits Repayment of finance lease liabilities Financing cash flows from finance leases Finance Lease, Principal Payments Schedule of Finance Lease, Liability, to be Paid, Maturity Finance Lease, Liability, to be Paid, Maturity [Table Text Block] 2023 Employee Stock Purchase Plan 2023 Employee Stock Purchase Plan [Member] 2023 Employee Stock Purchase Plan All Individuals All Individuals [Member] Time-based Restricted Stock Units Time-based Restricted Stock Units [Member] Time-based Restricted Stock Units Cash paid for amounts included in the measurement of lease liabilities Cash Flow, Operating Activities, Lessee [Abstract] External appraised values; management assumptions regarding market trends, market rate for borrower, or other relevant factors Measurement Input, External Appraised Values, Management Assumptions Regarding Market Trends, Market Rate For Borrower, Or Other Relevant Factors [Member] Measurement Input, External Appraised Values, Management Assumptions Regarding Market Trends, Market Rate For Borrower, Or Other Relevant Factors Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Entity Filer Category Entity Filer Category Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Statement [Table] Statement [Table] Current Fiscal Year End Date Current Fiscal Year End Date Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivatives designated as hedging instruments Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] PEO Name PEO Name 2024 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Pass Pass [Member] (Increase) in loans made to customers, net Increase (Decrease) in Customer Loans Increase (Decrease) in Customer Loans Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Other interest expense Interest Expense, Other Nonrecurring Fair Value, Nonrecurring [Member] Loans Insured or Guaranteed by Government Authorities [Domain] Loans Insured or Guaranteed by Government Authorities [Domain] Directors' fees Noninterest Expense Directors Fees Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Statement of Financial Position [Abstract] Reclassification adjustment for loss (gain) on a fair value hedge, tax Other Comprehensive Income (Loss), Fair Value Hedge, Gain (Loss), Reclassification, Tax Other Comprehensive Income (Loss), Fair Value Hedge, Gain (Loss), Reclassification, Tax Total Shareholders’ Equity Beginning Balance Ending Balance Equity, Attributable to Parent Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Other Operating Expense Other Income and Other Expense Disclosure [Text Block] Weighted average price of shares purchased (in dollars per share) Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased 2023 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Derivatives not designated as hedges: Not Designated as Hedging Instrument [Member] Obligations of states and municipalities US States and Political Subdivisions Debt Securities [Member] Hedging Designation [Domain] Hedging Designation [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] 2023 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Single family residential (1-4 units) One to Four Family Residential Loans [Member] One to Four Family Residential Loans Other real estate owned Other Real Estate Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Weighted Average Weighted Average [Member] Thereafter Lessor, Operating Lease, Payment to be Received, after Year Four Lessor, Operating Lease, Payment to be Received, after Year Four Off-balance-sheet, credit loss, liability Off-Balance-Sheet, Credit Loss, Liability City Area Code City Area Code Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Earnings Per Share Earnings Per Share [Text Block] Product and Service [Axis] Product and Service [Axis] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Valuation Technique, Appraisal Of Collateral For Liquidity Valuation Technique, Appraisal Of Collateral For Liquidity [Member] Valuation Technique, Appraisal Of Collateral For Liquidity Other operating Total Other Noninterest Expense Document Fiscal Year Focus Document Fiscal Year Focus Total amounts of income and expense line items presented in the statement of financial performance in which the effects of fair value or cash flow hedges are recorded. Gain (Loss) on Fair Value Hedges Recognized in Earnings Total deposits Deposits Operating lease term Lessee, Operating Lease, Term of Contract Unrealized holding gain (loss) on cash flow hedge, tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Interest-bearing deposits Interest-Bearing Deposit Liabilities Minimum Required for Capital Adequacy Purposes (includes applicable capital conservation buffer) Amount Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum Receivables [Abstract] Exercise Price Award Exercise Price Net gains (losses) relating to the free-standing derivative instruments Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] Actual Amount Banking Regulation, Tier 1 Leverage Capital, Actual Cash dividends, declared - $0.53 per share Dividends, Common Stock, Cash Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Amortization of housing tax credits Amortization Of Housing Tax Credits Amortization Of Housing Tax Credits Deposit liabilities reclassified as loans receivable Deposit Liabilities Reclassified as Loans Receivable Occupancy Occupancy, Net Total Liabilities and Shareholders’ Equity Liabilities and Equity Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Ownership [Domain] Ownership [Domain] Operating leases Operating Lease, Right-of-Use Asset Cash and due from banks Cash and due from banks Cash and Due from Banks Allowance for Credit Losses Allowance for Credit Losses [Text Block] Net increase (decrease) in interest-bearing accounts Net Change Interest-Bearing Deposits, Domestic Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Collateral Pledged Collateral Pledged [Member] Remaining nine months ending December 31, 2024 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Arrangement Duration Trading Arrangement Duration Commercial real estate Commercial Real Estate Portfolio Segment [Member] Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] (Purchase) sale of treasury stock, net (in shares) Stock Issued During Period, Shares, Treasury Stock Reissued Thereafter Lessee, Operating Lease, Liability, to be Paid, Due after Year Four Lessee, Operating Lease, Liability, to be Paid, Due after Year Four Borrowed funds Interest Expense, Borrowings Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Termination Date Trading Arrangement Termination Date Selling Cost Selling Cost [Member] Selling Cost Common stock, authorized (in shares) Common Stock, Shares Authorized To Be Well Capitalized Under Prompt Corrective Action Regulations Amount Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Total lease liabilities Lease, Liability Lease, Liability Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] Award Timing Disclosures [Line Items] Actual Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Time deposits, at or above FDIC insurance limit Time Deposits, at or Above FDIC Insurance Limit Outstanding amount for short-term debt Short-Term Debt, Average Outstanding Amount Additional paid-in capital Additional Paid in Capital Five to Ten Years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Loans, net Loans Receivable, Fair Value Disclosure Year to date gross charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] Loans Loans, gross Total Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Pledged Status [Domain] Pledged Status [Domain] Doubtful Doubtful [Member] Insider Trading Arrangements [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Originations of loans held-for-sale Payment for Origination and Purchase, Loan, Held-for-Sale Common Tier 1 (CET 1) to risk-weighted assets Banking Regulation, Common Equity Tier 1 Risk-Based Capital [Abstract] Interest-earning deposits with banks Interest-Bearing Deposits in Banks and Other Financial Institutions Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets Adjustment to Compensation, Amount Adjustment to Compensation Amount Federal Home Loan Bank (FHLB) Federal Home Loan Bank (FHLB) [Member] Federal Home Loan Bank (FHLB) Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Preferred stock, fixed rate (as a percent) Preferred Stock, Dividend Rate, Percentage Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Entity Central Index Key Entity Central Index Key Burke & Herbert Bank & Trust Company Burke & Herbert Bank & Trust Company [Member] Burke & Herbert Bank & Trust Company Compensation cost for awards granted Share-Based Payment Arrangement, Expense Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Total right-of-use assets Lease, Right-of-Use Asset Lease, Right-of-Use Asset Name Trading Arrangement, Individual Name Total other comprehensive income (loss) Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Lessor, Lease, Description [Line Items] Lessor, Lease, Description [Line Items] Schedule of Time Deposit Maturities Time Deposit Maturities [Table Text Block] Reclassification adjustment for loss (gain) on fair value hedge, net of tax of $8 and $496 for the three months ended March 31, 2024, and March 31, 2023, respectively Other Comprehensive Income (Loss), Fair Value Hedge, Gain (Loss), Reclassification, After Tax Other Comprehensive Income (Loss), Fair Value Hedge, Gain (Loss), Reclassification Adjustment From AOCI, After Tax Amendment Flag Amendment Flag Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Operating lease weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Net interest income Interest Income (Expense), Net Shares issued during period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Unallocated Unallocated Financing Receivables [Member] One Year or Less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One 2021 Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff Schedule of Impaired Financing Receivables Impaired Financing Receivables [Table Text Block] Finance lease weighted average remaining lease term (years) Finance Lease, Weighted Average Remaining Lease Term Amortized Cost Impaired Financing Receivable, Recorded Investment Financing of sale from loan held-for-sale Financing of Sale from Loan Held-for-Sale Financing of Sale from Loan Held-for-Sale Weighted average dilutive shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Gross realized losses Debt Securities, Available-for-Sale, Realized Loss Purchases of property and equipment, net of disposals Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Total Assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name (Purchase) sale of treasury stock, net Stock Issued During Period, Value, Treasury Stock Reissued Share-based compensation expense, net APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Interest paid on finance lease Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Vested (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Non-NEOs Non-NEOs [Member] Amortized Cost, With No Related Allowance Impaired Financing Receivable, with No Related Allowance, Recorded Investment Cash Flows from Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Company-owned life insurance Bank Owned Life Insurance Weighted average number of shares (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of Short-Term Debt [Table] Schedule of Short-Term Debt [Table] Increase (decrease) in other short-term borrowings Proceeds from (Repayments of) Short-Term Debt And Other Borrowings Proceeds from (Repayments of) Short-Term Debt And Other Borrowings Actual Amount Banking Regulation, Tier 1 Risk-Based Capital, Actual Other comprehensive income (loss), net of tax: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] 2027 Time Deposit Maturities, Year Three Operating lease income Operating Lease, Lease Income Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Statement [Line Items] Statement [Line Items] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Loans Insured or Guaranteed by Government Authorities [Axis] Loans Insured or Guaranteed by Government Authorities [Axis] Schedule of Debt Securities, Available-for-Sale Debt Securities, Available-for-Sale [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Financial instrument contractual amount Fair Value Disclosure, off-Balance-Sheet Risks, Face Amount, Liability Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Accounting Standards Update 2016-13 [Member]