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[Table] Customer relationship intangibles Customer-Related Intangible Assets [Member] Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Summary of Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] CONTINGENCIES Contingencies Disclosure [Text Block] Supplemental disclosures of cash flow information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Less: Allowance for credit losses Balance, beginning of period Balance end of period Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Document Period End Date Document Period End Date Fair value adjustments on loans held for sale Loans Held For Sale, Fair Value Adjustment Loans Held For Sale, Fair Value Adjustment Cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Orrstown Bank Subsidiaries [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Debt instrument face amount Debt Instrument, Face Amount Per share information: Earnings Per Share, Basic [Abstract] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Revolving Loans Converted to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Gross losses Debt Securities, Available-for-Sale, Realized Loss Treasury stock—40,539 and 204,420 shares, at cost at June 30, 2026 and December 31, 2025, respectively Treasury Stock, Common, Value Debt instrument, interest rate, effective percentage Debt Instrument, Interest Rate, Effective Percentage Fair Value Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Fair Value Derivative, Fair Value, Net [Abstract] Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Brokerage income Brokerage Commissions Revenue Securities sold under agreements to repurchase and federal funds purchased Securities Sold under Agreements to Repurchase Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Business Combination, Separately Recognized Transaction [Axis] Business Combination, Separately Recognized Transaction [Axis] Weighted-average remaining lease term (in years) Finance Lease, Weighted Average Remaining Lease Term Fair value of shares vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Total Class of Financing Receivable Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage Financial Assets Financial Assets Abstract [Abstract] Financial Assets Abstract EARNINGS PER SHARE Earnings Per Share [Text Block] Per share information: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Weighted Average Interest Rate Reduction Financing Receivable, Modified, Weighted-Average Interest Rate Decrease from Modification Discount Rate Measurement Input, Discount Rate [Member] Securities available-for-sale (amortized cost of $973,712 and $972,138 at June 30, 2026 and December 31, 2025, respectively) Fair Value Investment securities Debt Securities, Available-for-Sale, Excluding Accrued Interest Purchases of bank premises and equipment Payments to Acquire Property, Plant, and Equipment Total identifiable net assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Company Selected Measure Name Company Selected Measure Name Unrealized gains (losses) included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Purchases of AFS securities Payments to Acquire Debt Securities, Available-for-Sale Appraisals, required period interval Appraisals, Required Period Interval Appraisals, Required Period Interval Subordinated notes and trust preferred debt Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Subordinated Notes And Trust Preferred Debt Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Subordinated Notes And Trust Preferred Debt Deposits Interest Expense, Deposits Fixed rate of interest Long-Term Debt, Percentage Bearing Fixed Interest, Percentage Rate Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Year one Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Depreciation and amortization expense Depreciation, Depletion and Amortization, Nonproduction Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Substandard - IEL Substandard IEL [Member] Substandard IEL Dividends paid per share (in usd per share) Dividends per share (in usd per share) Common Stock, Dividends, Per Share, Cash Paid Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Estimated useful life (in years) Property, Plant, and Equipment, Useful Life Total identifiable net assets Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Transfers out of level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Actual, Amount Banking Regulation, Tier 1 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commitment to lend Financing Receivable, Modified, Commitment to Lend Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Cash paid for operating lease liabilities Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Total intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Interest income Interest and Dividend Income, Operating [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Level 1 Fair Value, Inputs, Level 1 [Member] Installment and other loans Installment and other loans Installment and Other Installment and Other Loans [Member] Installment and Other Loans [Member] Number of swap terminations Number of Swap Agreements Terminated Number of Swap Agreements Terminated Mortgage banking activities Fees And Commissions, Mortgage Banking And Services, Net Fees And Commissions, Mortgage Banking And Services, Net Dilutive effect of share-based compensation (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Fair Value Debt Securities, Available-for-Sale [Abstract] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Fair value of the debt Long-Term Debt, Fair Value Book Value Book Value [Member] Book Value Plan Name [Domain] Plan Name [Domain] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Amortized Cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Outstanding at beginning of year (in usd per share) Outstanding at end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Operating lease ROU assets Operating Lease, Right-of-Use Asset Due in one year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Goodwill Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill Fair Value Disclosures [Abstract] Number of new interest rate swaps Number of New Interest Rate Swaps Number of New Interest Rate Swaps Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] INVESTMENT SECURITIES Investment in Debt and Equity Securities and Other Trading Assets [Text Block] Expiration Date Trading Arrangement Expiration Date Total liabilities assumed Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities Hedging Relationship [Axis] Hedging Relationship [Axis] Cash and due from banks Cash and Cash Equivalents, Fair Value Disclosure Subordinated notes Subordinated Debt Subordinated Debt [Member] Exercisable at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Cash and cash equivalents Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash And Cash Equivalents Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Cash And Cash Equivalents Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Other - term Other, Term [Member] Other, Term Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Common stock, no par value (usd per share) Common Stock, No Par Value Deposits Deposits, Fair Value Disclosure Unearned discount Debt Instrument, Unamortized Discount (Premium), Net Fair value option, aggregate fair value was greater than (below) principal amount Fair Value, Option, Aggregate Differences, Loans and Long-Term Receivables Commercial Real Estate Commercial Real Estate [Member] Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Accrued interest receivable Interest Receivable Fair Value Interest receivable fair value. New risk participation agreements Number Of New Risk Participation Agreements Number Of New Risk Participation Agreements Interest rate swaps Derivatives Derivatives Interest Rate Swap [Member] Net common shares acquired (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited Financial Asset, Other than Financial Asset Acquired with Credit Deterioration Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] Total identifiable assets acquired Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Assets Measurement Input, Pull Through Increase (Decrease) Measurement Input, Pull Through Increase (Decrease) [Member] Measurement Input, Pull Through Increase (Decrease) Summary of Restricted Shares Compensation Expense Schedule of Restricted Stock Award Expense [Table Text Block] Schedule of Restricted Stock Award Expense [Table Text Block] Adjustments to deposits Deposits Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deposits Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deposits Business Combination [Table] Business Combination [Table] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Weighted-average discount rate Finance Lease, Weighted Average Discount Rate, Percent Debt instrument interest rate Debt Instrument, Interest Rate, Stated Percentage Total shareholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Other assets Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent For Capital Adequacy Purposes (includes applicable capital conservation buffer), Amount Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum Assets Assets [Abstract] Payment Delay Payment Deferral [Member] PCD ACL Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Shares issued for common stock (in shares) Shares issued for common stock - as exchanged (in shares) Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Summary of Amortized Cost of the Loan Portfolio, by Year of Origination, Loan Class, and Credit Quality Financing Receivable Credit Quality Indicators [Table Text Block] Fair Value, Measurements, Nonrecurring Fair Value, Nonrecurring [Member] Professional services Professional Fees Insider Trading Policies and Procedures [Line Items] Nonperforming Nonperforming Financial Instruments [Member] Adjustments to acquired goodwill Goodwill Adjustments to acquired goodwill Goodwill, Measurement Period Adjustment Business Combination, Separately Recognized Transaction [Domain] Business Combination, Separately Recognized Transaction [Domain] Purchased options – rate cap Purchased Option- Rate Cap [Member] Purchased Option- Rate Cap Commercial real estate Commercial Real Estate Commercial Real Estate Portfolio Segment [Member] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Asset, measurement input (as a percent) Servicing Asset, Measurement Input Accrued interest receivable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Interest Receivable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Interest Receivable Number of operating segments Number of Operating Segments Average outstanding options excluded from diluted earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Summary of Changes in Goodwill Goodwill [Table Text Block] Entity Central Index Key Entity Central Index Key Net interest income after net provision for (recovery of) credit losses Interest Income (Expense), after Provision for Loan Loss Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Payment of legal settlement Payments for Legal Settlements Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Derivatives designated as hedging instruments: Designated as hedging instrument Designated as Hedging Instrument [Member] Number of borrowers experiencing financial difficulty that were given contract modifications Number Of Borrowers Experiencing Financial Difficulty, Given Loan Modifications Number Of Borrowers Experiencing Financial Difficulty, Given Loan Modifications Unpaid Principal Balance Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price Financing Receivable, Modified [Table] Financing Receivable, Modified [Table] Interchange income Merchant and Bankcard Fees, Interchange Income Merchant and Bankcard Fees, Interchange Income Debt instrument basis spread Debt Instrument, Basis Spread on Variable Rate Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Substandard - Non-IEL Substandard Non IEL [Member] Substandard Non IEL Interest-bearing Interest-Bearing Deposit Liabilities, Domestic Nonaccrual loans with no related ACL Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance Restricted Stock Restricted Stock [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] To Be Well Capitalized Under Prompt Corrective Action Regulations, Ratio Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum All Individuals All Individuals [Member] Carrying Amounts of Hedged Assets Hedged Asset, Fair Value Hedge Dividends paid Payments of Dividends Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Performing Performing Financial Instruments [Member] Investment securities pledged to secure public funds, fair value Debt Securities, Available-for-Sale, Restricted Unrecognized compensation expense, recognition period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Statement [Line Items] Statement [Line Items] Total assets Assets Business Combination [Abstract] Term Extension Extended Maturity [Member] Total interest expense Interest Expense, Operating Number of shares reserved to be issued (in shares) Common Stock, Capital Shares Reserved for Future Issuance Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Reclassification adjustment for (losses) gains on securities available for sale realized in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Gross Unrealized Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Total liabilities assumed Business Combination, Recognized Liability Assumed, Liability SHARE-BASED COMPENSATION PLANS Share-Based Payment Arrangement [Text Block] Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract [Abstract] AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract Occupancy Occupancy, Net PEO PEO [Member] Goodwill Goodwill Balance, beginning of year Balance, end of period Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Total Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions CVB Statutory Trust No. II CVB Statutory Trust Number Two [Member] CVB Statutory Trust Number Two Interest rate swap-fixed pay Interest Rate Swap-Fixed Pay [Member] Interest Rate Swap-Fixed Pay Retained Earnings Retained Earnings [Member] Increase (Decrease) in Shareholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Summary of Carrying Amounts and Estimated Fair Values of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Diluted earnings per share (in usd per share) Earnings Per Share, Diluted Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] FDIC insurance Federal Deposit Insurance Corporation Premium Expense Provision for (recovery of) credit losses - loans Provision for (recovery of) credit losses - loans Provision for credit losses Financing Receivable, Credit Loss, Expense (Reversal) Nature of Operations Nature Of Operations Policy [Policy Text Block] Nature of operations. Intangible asset amortization Amortization expense Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Year four Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year Total identifiable assets acquired Business Combination, Recognized Asset Acquired, Asset Share-Based Payment Arrangement [Abstract] Percentage of loan-to-value ratios of the value of the real estate taken as collateral Percentage Of Loan To Value Ratio Of Value Of Real Estate Taken As Collateral Percentage of loan to value ratio of value of real estate taken as collateral. For Capital Adequacy Purposes (includes applicable capital conservation buffer), Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum Orrstown 2011 Incentive Stock Plan Orrstown Financial Services, Inc. 2011 Incentive Stock Plan [Member] Orrstown Financial Services, Inc. 2011 Incentive Stock Plan [Member] Securities sold under agreements to repurchase and federal funds purchased Federal Funds Purchased and Securities Sold under Agreements to Repurchase Financial Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] GSE residential MBSs GSE residential MBSs Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Nonaccrual loans with a related ACL Financing Receivable Excluding Accrued Interest Nonaccrual, With Allowance Financing Receivable Excluding Accrued Interest Nonaccrual, With Allowance Notional Amount Notional Disclosures [Abstract] To Be Well Capitalized Under Prompt Corrective Action Regulations, Ratio Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Other income Noninterest Income, Other Hedged Asset, Statement of Financial Position Flag Hedged Asset, Statement of Financial Position [Extensible Enumeration] Employee Stock Ownership Plan (ESOP) [Table] Employee Stock Ownership Plan (ESOP) [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Multi-family Multi-family Multifamily [Member] Net (gains) losses on derivatives Derivative, Gain (Loss) on Derivative, Net Actual, Ratio Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets Common Equity Tier 1 Risk Based Capital To Risk Weighted Assets MERGER Business Combination [Text Block] Collateral [Axis] Collateral Held [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Equity Securities Equity Securities [Member] Fair value adjustments of operating lease assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Operating Lease Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Operating Lease Assets Revolving Loans Amortized Basis Financing Receivable, Excluding Accrued Interest, Revolving Taxes other than income Taxes, Other Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Short-term investments Interest Income, Short-term Investments, Operating Interest Income, Short-term Investments, Operating Summary of Activity in the ALL and Ending Loan Balances Individually Evaluated for Impairment Based on Loan Segment Financing Receivable, Allowance for Credit Loss [Table Text Block] Common stock, shares issued (in shares) Common Stock, Shares, Issued Balance, beginning of period Balance, end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Constant Prepayment Rate Measurement Input, Constant Prepayment Rate [Member] Non-owner occupied Non-owner occupied Non Owner Occupied [Member] Non Owner Occupied [Member] 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Net gain on OREO and premises held for sale Gains (Losses) on Sales of Other Real Estate Noninterest expenses Noninterest Expense [Abstract] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Amount of Gain (Loss) Recognized in Income Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Advertising and bank promotions Marketing and Advertising Expense Changes in fair value of impaired loans and foreclosed real estate Assets, Fair Value Adjustment 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Stock repurchase program, shares available for future repurchase (in shares) Share Repurchase Program, Remaining Authorized, Number of Shares Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Other intangible assets, net Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Stock available for future repurchases, percentage Stock Repurchase Program, Remaining Stock Available for Repurchase, Percentage Stock Repurchase Program, Remaining Stock Available for Repurchase, Percentage Fair Value as of Grant Date Award Grant Date Fair Value Collateral Pledged Collateral Pledged [Member] Summary of Investment Securities with Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Operating lease assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right-of-Use Asset Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right-of-Use Asset Shares available to be issued under the plan (in shares) Shares Available For Issuance Under Stock Purchase Plan Shares available for issuance under stock purchase plan. 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Exercisable at period end (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price GSE residential CMOs Residential Collateralized Mortgage Obligations, US Government Sponsored Enterprises [Member] Residential Collateralized Mortgage Obligations, US Government Sponsored Enterprises Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Adjustment to premises and equipment Premises and equipment, net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Agricultural Agricultural Agricultural Agricultural Portfolio Segment [Member] Agricultural Portfolio Segment Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Tax effect OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax Range [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Merger-related expenses Business Combination, Acquisition-Related Cost, Expense Interest rate swaps - FHLB advances Interest Rate Swap FHLB [Member] Interest Rate Swap FHLB Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Summary of ROU Assets and Related Lease Liabilities Lessee, Lease Assets And Liabilities [Table Text Block] Lessee, Lease Assets And Liabilities Total deposits Deposits Common stock, no par value—$0.05205 stated value per share; 50,000,000 shares authorized; 19,710,341 shares issued and 19,669,802 outstanding at June 30, 2026; 19,711,628 shares issued and 19,507,208 outstanding at December 31, 2025 Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Shares repurchased as treasury stock for employee taxes associated with restricted stock vesting Payment, Tax Withholding, Share-Based Payment Arrangement Summary of 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of AFS Securities Debt Securities, Available-for-Sale [Table Text Block] Two interest rate swaps Two Interest Rate Swaps [Member] Two Interest Rate Swaps Interest rate swaps - FHLB advances and brokered deposits Federal Home Loan Bank Advances [Member] Deferred income tax expense Increase (Decrease) in Deferred Income Taxes Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Transfers into level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 To Be Well Capitalized Under Prompt Corrective Action Regulations, Amount Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum Acquisition and development Acquisition and Development Acquisition And Development Portfolio Segment [Member] Acquisition And Development Portfolio Segment [Member] Loans, net of allowance for credit losses ("ACL") Business Combination, Provisional Information, Initial Accounting 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Mortgage-Backed Securities, Commercial, Issued By US Government Sponsored Enterprises Employee Stock Purchase Plan Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Time ($250,000 or less) Time Deposits, Less than $100,000 Recognized amounts of identifiable assets acquired and liabilities assumed Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Less Noncontrolling Interest [Abstract] LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock [Axis] Class of Stock [Axis] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Net loans Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Charge-offs Financing Receivable, Allowance for Credit Loss, Writeoff Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Land Land [Member] Gain on disposal of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment Number of matured swap agreement Number of Matured Swap Agreements Number of Matured Swap Agreements Codorus Valley Codorus Valley [Member] Codorus Valley Subordinated notes payable outstanding Maturities of subordinated notes and trust preferred debt Long-Term Debt Combination Term Extension and Principal Forgiveness Extended Maturity and Principal Forgiveness [Member] Other Other Other Security Investments [Member] Year three Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year FHLB advances and other borrowings Interest Expense, Federal Home Loan Bank Advances and Other Overnight 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Business combination, shares of common stock to be received by acquiree for number of shares outstanding ratio Per common share exchange ratio Business Combination, Consideration Transferred, Stock Conversion, Ratio Business Combination, Consideration Transferred, Stock Conversion, Ratio SHAREHOLDERS’ EQUITY AND REGULATORY CAPITAL Equity [Text Block] Securities Exchange Name Security Exchange Name Deferred income tax asset, net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Income Tax Asset, Net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Income Tax Asset, Net Valuation allowance, deferred tax asset, increase (decrease), amount Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Credit Loss Status [Domain] Credit Loss Status [Domain] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Cash collateral held by counterparty for derivatives Cash Collateral Held By Counterparty for Derivatives Cash Collateral Held By Counterparty for Derivatives Fair value adjustments of finance lease assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Finance Lease Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Finance Lease Assets Financing receivable, excluding accrued interest, modified, subsequent default Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default Total risk-based capital: Banking Regulation, Total Capital [Abstract] Amount of loan on which reviews require approval Amount Of Loan On Which Reviews Require Approval Amount Of Loan On Which Reviews Require Approval 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Directors' compensation Director Fee Financing lease assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Statement of Comprehensive Income [Abstract] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Asset-backed Available For Sale Securities, Asset-backed Debt Securities, Amortized Cost Available For Sale Securities, Asset-backed Debt Securities, Amortized Cost Real estate acquired through foreclosure, sold Real Estate Acquired Through Foreclosure, Sold Real Estate Acquired Through Foreclosure, Sold Total other comprehensive income (loss), net of tax and reclassification adjustments on securities available for sale OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Asset Class [Domain] Asset Class [Domain] Payments on FHLB advances with original maturities greater than 90 days Payments of FHLBank Borrowings, Financing Activities Compensation Amount Outstanding Recovery Compensation Amount Percentage of loan-to-value ratio upon loan origination Percentage Of Loan To Value Ratio Upon Loan Origination Percentage of loan to value ratio upon loan origination. 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securities, available-for-sale, unrealized loss position, allowance for credit loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Allowance For Credit Loss Debt Securities, Available-for-Sale, Unrealized Loss Position, Allowance For Credit Loss Orrstown Financial Services, Inc. 2025 Incentive Stock Plan 2025 Stock Incentive Plan [Member] 2025 Stock Incentive Plan Business Acquisition, Acquiree [Domain] Business Combination [Domain] Non-Credit Discount Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Finance lease asset acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finance Lease, Right-of-Use Asset Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finance Lease, Right-of-Use Asset All Adjustments to Compensation All Adjustments to Compensation [Member] Settlement of terminated derivatives Payments for (Proceeds from) Derivative Instrument, Financing Activities Core deposit intangible Core Deposits [Member] Business Acquisition [Axis] Business Combination [Axis] Accounting for Income Taxes Income Tax, Policy [Policy Text Block] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Residential mortgage Residential Mortgage Residential Portfolio Segment [Member] Municipal Municipal Municipal [Member] Municipal [Member] Income Statement [Abstract] Shareholders’ Equity Equity, Attributable to Parent [Abstract] Shares purchased (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Total Collateral Total Collateral [Member] Total Collateral Document Transition Report Document Transition Report For Capital Adequacy Purposes (includes applicable capital conservation buffer), Amount Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum Codorus Valley Junior Subordinated Trust Preferred Debt Codorus Valley Junior Subordinated Trust Preferred Debt [Member] Codorus Valley Junior Subordinated Trust Preferred Debt Deferred tax assets, net Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Summary of Components of Other Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] City Area Code City Area Code Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Number of Securities Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Number of Positions [Abstract] Risk participation agreements with sold protection Number Of Risk Participation Agreements With Sold Protection Number Of Risk Participation Agreements With Sold Protection Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] 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] Entity [Domain] Entity [Domain] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Total interest income Interest and Dividend Income, Operating Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Transfers out of Level 3 Fair Value, Measurement With Unobservable Inputs, Number Of Transfers Out Of Level 3 Fair Value, Measurement With Unobservable Inputs, Number Of Transfers Out Of Level 3 Interest rate swaps - FHLB advances and brokered money market deposits Interest Rate Swap FHLB And Other [Member] Interest Rate Swap FHLB And Other Net increase (decrease) in deposits Increase (Decrease) in Deposits 12 Months or More Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Measurement Basis [Axis] Measurement Basis [Axis] To Be Well Capitalized Under Prompt Corrective Action Regulations, Amount Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum Operating lease liabilities acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Liabilities Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Premises and Equipment Premises And Equipment [Member] Premises And Equipment Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] 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 Unrealized gains (losses) on securities available for sale arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Other service charges, commissions and fees NonInterest Income, Fess And Commissions Other Non Interest Income, Fess And Commissions Other Actual, Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual Due in one year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Subsequent Event Type [Domain] Subsequent Event Type [Domain] 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 Revolving Loans Amortized Basis Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff Cash and cash equivalents Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Summary of Additional Qualitative Information Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Written options – rate cap Written Option- Rate Cap [Member] Written Option- Rate Cap Cash Flow Hedging Cash Flow Hedging [Member] Net increase in borrowings with original maturities less than 90 days Proceeds from (Repayments of) Short-Term Debt, Maturing in Three Months or Less Summary of Consideration Paid and Estimated Fair Values of Assets Acquired and Liabilities Assumed Business Combination [Table Text Block] Non-agency CMOs Non-agency CMOs Non-agency Collateralized Mortgage Obligations [Member] Non-agency Collateralized Mortgage Obligations Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Commercial real estate, construction and land development loans Commercial Real Estate Construction And Land Development Loans [Member] Commercial Real Estate Construction And Land Development Loans [Member] Weighted Average Term Extension (in years) Financing Receivable, Modified, Weighted-Average Term Increase from Modification Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Premises and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Risk participations - sold credit protection Risk Participation Agreement, Sold Protection [Member] Risk Participation Agreement, Sold Protection Other assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Noncurrent Assets Financial Instruments [Domain] Financial Instruments [Domain] Year five Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year Derivatives Derivatives Derivative Asset Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] GOODWILL AND OTHER INTANGIBLE ASSETS Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount Fair Value Estimate of Fair Value Measurement [Member] For Capital Adequacy Purposes (includes applicable capital conservation buffer), Ratio Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Combination Term Extension and Interest Rate Reductions Extended Maturity and Interest Rate Reduction [Member] Proceeds from issuance of employee stock purchase plan shares Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Abstract] Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Abstract] Other Payment for (Proceeds from) Other Investing Activity Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Loans, net of allowance for credit losses ("ACL") Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans, Net Of Allowance For Credit Losses Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans, Net Of Allowance For Credit Losses Summary of Nonvested Restricted Shares Activity Nonvested Restricted Stock Shares Activity [Table Text Block] Number of shares available to be issued under employee stock purchase plan (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Net unrealized gains (losses) on securities available for sale OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Maximum shares that can be purchased, as percentage of annual salary Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Employee Subscription Rate Loans modified Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount Off-balance sheet, credit risk exposure liability Off-Balance-Sheet, Credit Loss, Liability Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Less Than 12 Months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Tax effect Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Cash paid during the period for: Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] Current Fiscal Year End Date Current Fiscal Year End Date Finance lease liability acquired Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Finance Lease Liability Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Finance Lease Liability Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends paid per share (in usd per share) Common Stock, Dividends, Per Share, Declared Fractional shares of common stock to be paid in cash (in shares) Business Combination, Fractional Shares Of Common Stock To Be Paid In Cash Business Combination, Fractional Shares Of Common Stock To Be Paid In Cash Entity File Number Entity File Number Individually evaluated loans, measurement input (as a percent) Individually Evaluated Loans, Measurement Input Individually Evaluated Loans, Measurement Input Summary of Amortized Cost and Fair Values of AFS Securities by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Death benefit proceeds from life insurance contracts Proceeds from Life Insurance Policy Corporate debt Corporate debt Corporate Bond Securities [Member] Reclassification adjustment for gains realized in net income Amount of Gain Reclassified from AOCI into Income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Summary of Stock Options Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Securities sold under agreements to repurchase Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Securities Sold Under Agreements To Repurchase Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Securities Sold Under Agreements To Repurchase Measure: Measure [Axis] Loans that are deemed impaired, number of days past due (more than) Number Of Days Of Past Due Assigned As Substandard Rating Maximum number of days of past due assigned as substandard rating. Amortization of debt issuance costs and discounts Amortization of Debt Discount (Premium) Derivative instrument, number of derivatives terminated Derivative Instrument, Number Of Derivatives Terminated Derivative Instrument, Number Of Derivatives Terminated Treasury stock (in shares) Treasury Stock, Common, Shares Investment securities - tax-exempt Interest Income, Securities, Operating, Tax Exempt Summary of Changes in Other Intangible Assets Intangible Asset, Finite-Lived, Acquired [Table Text Block] Equity Components [Axis] Equity Components [Axis] Compensation expense recognized Stock or Unit Option Plan Expense Other liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Other Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Other Entity Interactive Data Current Entity Interactive Data Current Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five To Be Well Capitalized Under Prompt Corrective Action Regulations, Amount Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum Entity Small Business Entity Small Business Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Unamortized discount Debt Instrument, Unamortized Discount To Be Well Capitalized Under Prompt Corrective Action Regulations, Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum Expected life (in years) Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Net interest income Interest Income (Expense), Operating MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Automated teller and interchange fees Automated Teller and Interchange Fees Automated Teller and Interchange Fees SUBORDINATED NOTES Subordinated Borrowings Disclosure [Text Block] Document Type Document Type Debt redeemed amount Debt Instrument, Repurchased Face Amount Measurement Input, Pull Through Measurement Input, Pull Through [Member] Measurement Input, Pull Through 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] Risk participation agreements with purchase protection Number Of Risk Participation Agreements With Purchase Protection Number Of Risk Participation Agreements With Purchase Protection Commercial Commercial Borrower [Member] Allowance for Credit Losses Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Number of share-based compensation plans Number Of Share Based Compensation Plans Number Of Share Based Compensation Plans Actual, Ratio Banking Regulation, Tier 1 Leverage Capital Ratio, Actual Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Unearned income Financing Receivable Excluding Accrued Interest, Deferred Income Financing Receivable Excluding Accrued Interest, Deferred Income Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Commitments and contingencies Commitments and Contingencies FHLB advances and other borrowings Federal Home Loan Bank Advances and Other Borrowings Federal Home Loan Bank Advances and Other Borrowings Net discount accretion Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Discount Accretion (Premium Amortization), Amount Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Discount Accretion (Premium Amortization), Amount Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Intangible Asset, Finite-Lived [Roll Forward] Intangible Asset, Finite-Lived [Roll Forward] Executive Category: Executive Category [Axis] For Capital Adequacy Purposes (includes applicable capital conservation buffer), Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum, With Buffer Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum, With Buffer Acquisition Accounting Business Combination [Policy Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Summary of Employee Stock Purchase Plan Employee Stock Ownership Plan (ESOP) Disclosures [Table Text Block] Gains on sales of loans originated for sale Gain (Loss) on Sales of Loans, Net PEO Name PEO Name Other liabilities Accrued Liabilities and Other Liabilities Financial Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Income taxes Income Tax Paid, before Refund Received Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Total individually evaluated loans Financing Receivable, Individually Evaluated for Impairment, Fair Value Financing Receivable, Individually Evaluated for Impairment, Fair Value Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Cash and due from banks Cash and Due from Banks Summary of Loan Portfolio Summarized by Aging Categories of Performing Loans and Nonaccrual Loans Financing Receivable, Past Due [Table Text Block] Current Loans Not Past Due Financial Asset, Not Past Due [Member] Restricted share award tax benefit Share-Based Payment Arrangement, Expense, Tax Benefit Credit Loss Status [Axis] Credit Loss Status [Axis] Exercised (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Income from life insurance Income from life insurance Bank Owned Life Insurance Income Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Share-based compensation plans: Shares Granted or Issued, Share-Based Payment Arrangement [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Share-based compensation Share-Based Payment Arrangement, Noncash Expense Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Interest expense Interest Expense, Operating and Nonoperating [Abstract] Salaries and employee benefits Labor and Related Expense Percentage of value of the shares on the semi-annual offering Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Weighted average price of shares purchased (in usd per share) Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased Orrstown Financial Services Inc Orrstown Financial Services Inc [Member] Orrstown Financial Services Inc Net (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Actual, Amount Common Equity Tier 1 Risk Based Capital Common Equity Tier 1 Risk Based Capital Summary of Fair Value of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic earnings per share (in usd per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Cash collateral held from counterparties Cash Collateral Received From Counterparty for Derivatives Cash Collateral Received From Counterparty for Derivatives Insider Trading Arrangements [Line Items] Trust and investment management income Investment Banking Revenue Cash surrender value of life insurance Bank Owned Life Insurance Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Subordinated notes and trust preferred debt Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Subordinated Notes And Trust Preferred Debt Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Subordinated Notes And Trust Preferred Debt First lien First lien First Lien [Member] First Lien [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff Equity Awards Adjustments Equity Awards Adjustments [Member] FHLB advances and other borrowings Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Federal Home Loan Bank Advances And Other Borrowings Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Federal Home Loan Bank Advances And Other Borrowings Accrued interest receivable Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Interest Receivable Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Interest Receivable Hedging Relationship [Domain] Hedging Relationship [Domain] Deposits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Deposits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Deposits Mortgage loans originated for sale Increase (decrease) in fair value Increase (Decrease) in Loan, Mortgage, Held-for-Sale Number of real estate loans transferred to OREO Number of Real Estate Loans Transferred To OREO Number of Real Estate Loans Transferred To OREO Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Notes Payable, Other Payables Notes Payable, Other Payables [Member] Other intangible assets, net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Increase (decrease) in accrued interest payable and other liabilities Increase (Decrease) in Other Operating Liabilities Revolving Loans Converted to Term Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff Pass Pass [Member] Plan Name [Axis] Plan Name [Axis] Summary of Loan Portfolio, Excluding Residential Loans Held for Sale, Broken Out by Classes Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] 1-4 family residential construction loans One To Four Family Residential Construction Loans [Member] One To Four Family Residential Construction Loans [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Cumulative Amounts of Fair Value Hedging Adjustments Included in the Carrying Amounts of the Hedged Assets Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Summary of Proceeds From Sale of AFS Securities and Gross Gains and Gross Losses Schedule of Realized Gain (Loss) [Table Text Block] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Restricted investments in bank stocks Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Restricted Investments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Restricted Investments For Capital Adequacy Purposes (includes applicable capital conservation buffer), Amount Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy Common Equity Tier 1 Risk Based Capital Required For Capital Adequacy CMOs and MBSs Available For Sale Securities Collateralized Mortgage Obligations And Mortgage Backed Securities, Amortized Cost Available For Sale Securities Collateralized Mortgage Obligations And Mortgage Backed Securities, Amortized Cost Weighted Average Receive Rate Derivative Weighted Average Rate Received Derivative Weighted Average Rate Received Share Repurchase Program [Axis] Share Repurchase Program [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Class of Stock [Domain] Class of Stock [Domain] Statement of Cash Flows [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Number of legal proceedings that might have a material effect on the results of operations Number Of Legal Proceedings That Have Material Effect Number of legal proceedings that have material effect. Common stock reserved to be issued under dividend reinvestment and stock purchase plan (in shares) Common Stock Shares Reserved For Issuance Under Purchase Plan Common stock shares reserved for issuance under purchase plan. Fully vested and expected to vest (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Number of risk participation agreements terminated Number Of Risk Participation Agreements Terminated Number Of Risk Participation Agreements Terminated Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Business Combination, Consideration Transferred, Equity Interest, Type [Domain] OREO property acquired through foreclosure Real Estate Acquired Through Foreclosure Owner occupied Owner occupied Owner Occupied [Member] Owner Occupied [Member] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Consideration transferred Purchase price merger consideration for Codorus Valley Total purchase price consideration Business Combination, Consideration Transferred Net unrealized gains (losses) on interest rate swaps used in cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax To Be Well Capitalized Under Prompt Corrective Action Regulations, Amount Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Common Equity Tier 1 Risk Based Capital Required To Be Well Capitalized Entity Filer Category Entity Filer Category Pooled trust preferred debt issuance Proceeds from Issuance of Trust Preferred Securities Total Debt Securities, Available-for-Sale, Unrealized Loss Position OREO acquired in settlement of loans Real Estate Owned, Transfer from Real Estate Owned Financing Receivable, Nonaccrual [Line Items] Financing Receivable, Nonaccrual [Line Items] Amortized Cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Rolling Maturity [Abstract] Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Derivatives not designated as hedging instruments: Derivatives not designated as hedging instruments Not Designated as Hedging Instrument [Member] Investments, Debt and Equity Securities [Abstract] Deposits: Deposits [Abstract] Activity in allowance for loan losses Allowance for Loan and Lease Losses [Roll Forward] Business Assets Business Assets [Member] Business Assets Risk participation agreements Risk Participation Agreement [Member] Risk Participation Agreement Derivatives Derivatives Derivative Liability Entity Address, Address Line One Entity Address, Address Line One Impairment of intangibles Intangible Asset, Finite-Lived, Impairment Loss Home equity - term Home equity - term Home Equity Term [Member] Home Equity Term [Member] Lease liabilities arising from obtaining ROU assets Right-of-Use Asset Obtained in Exchange for Operating Lease 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 Income tax expense Income Tax Expense (Benefit) Number of customers Number Of Customers Number Of Customers Risk review of commercial relationships with committed loan balance amount (exceeds) Amount Of Loan On Which Review Have Been Made Annually, Greater Than Amount of loan on which review have been made annually. Total Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] To Be Well Capitalized Under Prompt Corrective Action Regulations, Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Cash received from options exercised Proceeds from Stock Options Exercised Year two Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative asset Derivative Asset, Subject to Master Netting Arrangement, before Offset Loans held for sale Loans held for sale Loan, Held-for-Sale, Fair Value Disclosure Supplemental schedule of noncash activities: Other Noncash Investing and Financing Items [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]