$ACNB
ACNB CORP Stock $acnb

$acnb Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000071557924000117 Filed on November 07, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$27.24M
YoY Change		12.41%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$6.299M
YoY Change		153.07%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income		$9.410M
YoY Change		-19.07%
Income Tax		$2.206M
% Of Pretax Income		23.44%
Net Earnings		$7.204M
YoY Change		-20.34%
Net Earnings / Revenue		26.45%
Basic Earnings Per Share		$0.85
Diluted Earnings Per Share		$0.85
COMMON SHARES
Basic Shares Outstanding	8.549M shares	8.546M shares
Diluted Shares Outstanding		8.546M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$58.09M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment		$27.65M
YoY Change		7.43%
Goodwill		$44.19M
YoY Change		0.0%
Intangibles		$8.142M
YoY Change		-13.7%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets		$2.421B
YoY Change		1.36%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses		$2.110M
YoY Change		-24.64%
Deferred Revenue
YoY Change
Short-Term Debt		$37.77M
YoY Change		14.09%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities		$39.88M
YoY Change		11.08%
LONG-TERM LIABILITIES
Long-Term Debt		$255.3M
YoY Change		1157.74%
Other Long-Term Liabilities		$27.64M
YoY Change		8.82%
Total Long-Term Liabilities		$283.0M
YoY Change		519.18%
TOTAL LIABILITIES
Total Short-Term Liabilities		$39.88M
Total Long-Term Liabilities		$283.0M
Total Liabilities		$2.114B
YoY Change		-0.88%
SHAREHOLDERS EQUITY
Retained Earnings		$230.8M
YoY Change		8.88%
Common Stock		$121.0M
YoY Change		1.74%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$11.20M
YoY Change		6.67%
Treasury Stock Shares
Shareholders Equity		$306.8M
YoY Change
Total Liabilities & Shareholders Equity		$2.421B
YoY Change		1.36%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$7.204M
YoY Change		-20.34%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities
YoY Change
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities
YoY Change
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities
YoY Change
NET CHANGE
Cash From Operating Activities
Cash From Investing Activities
Cash From Financing Activities
Net Change In Cash
YoY Change
FREE CASH FLOW
Cash From Operating Activities
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Central Index Key EntityCentralIndexKey	0000715579
	dei	Entity Registrant Name EntityRegistrantName	ACNB CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	17325
	dei	City Area Code CityAreaCode	717
	dei	Trading Symbol TradingSymbol	ACNB
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	65958000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	947000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	928000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	418079000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	451693000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	59038000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	59057000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	64578000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	64600000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	25542000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	26283000	usd
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2110000	usd
CY2024Q3	acnb	Restricted Investment In Bank Stocks RestrictedInvestmentInBankStocks	10853000	usd
CY2023Q4	acnb	Restricted Investment In Bank Stocks RestrictedInvestmentInBankStocks	9677000	usd
CY2023Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	79871000	usd
CY2024Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	909000	usd
CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1003000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	44185000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	9082000	usd
CY2024Q3	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	406000	usd
CY2023Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	467000	usd
CY2024Q3	us-gaap	Other Assets OtherAssets	44749000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	54186000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	195292000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	2110000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2615000	usd
CY2024Q3	acnb	Financing Receivable Allowance For Unfunded Commitments FinancingReceivableAllowanceForUnfundedCommitments	1349000	usd
CY2023Q4	acnb	Financing Receivable Allowance For Unfunded Commitments FinancingReceivableAllowanceForUnfundedCommitments	1719000	usd
CY2024Q3	us-gaap	Other Liabilities OtherLiabilities	26292000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	23065000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	2114159000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	2141386000	usd
CY2024Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	2.50
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.50
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.50
CY2024Q3	us-gaap	Treasury Stock Value TreasuryStockValue	11203000	usd
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	10954000	usd
CY2024Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	98697000	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2420914000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2418847000	usd
CY2024Q3	acnb	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	23108000	usd
CY2023Q3	acnb	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	20285000	usd
	acnb	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	67253000	usd
	acnb	Interest And Fee Income Loans And Leases Taxable InterestAndFeeIncomeLoansAndLeasesTaxable	58130000	usd
CY2024Q3	acnb	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	311000	usd
CY2024Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2617000	usd
CY2023Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2477000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	8193000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	8451000	usd
CY2024Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	284000	usd
CY2023Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	284000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	852000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	883000	usd
CY2024Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	251000	usd
CY2023Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	104000	usd
	us-gaap	Dividend Income Operating DividendIncomeOperating	739000	usd
	us-gaap	Dividend Income Operating DividendIncomeOperating	196000	usd
CY2024Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	670000	usd
CY2023Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	723000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	2104000	usd
	us-gaap	Interest Expense Domestic Deposits InterestExpenseDomesticDeposits	7915000	usd
	us-gaap	Interest Expense Domestic Deposits InterestExpenseDomesticDeposits	1887000	usd
CY2024Q3	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	204000	usd
CY2023Q3	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	439000	usd
	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	847000	usd
	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	564000	usd
CY2024Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	2983000	usd
CY2023Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	1122000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	8823000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	2078000	usd
CY2024Q3	us-gaap	Interest Expense InterestExpense	6299000	usd
CY2023Q3	us-gaap	Interest Expense InterestExpense	2489000	usd
	us-gaap	Interest Expense InterestExpense	4529000	usd
CY2024Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	20821000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	21666000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	65555000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	66527000	usd
CY2024Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	2787000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	473000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1473000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1399000	usd
CY2024Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	339000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	410000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	756000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	873000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	6833000	usd
	us-gaap	Noninterest Income NoninterestIncome	18927000	usd
	us-gaap	Noninterest Income NoninterestIncome	17475000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	10069000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	32611000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	30335000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8507140	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8517917	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8500860	shares
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3011000	usd
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2615000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	81344000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	384666	shares
CY2023Q3	acnb	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	361000	usd
	acnb	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	943000	usd
	acnb	Interest And Fee Income Loans And Leases Tax Exempt InterestAndFeeIncomeLoansAndLeasesTaxExempt	1069000	usd
	us-gaap	Interest Expense InterestExpense	17585000	usd
CY2024Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11017000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	587000	usd
	acnb	Proceeds From Sale Of Foreclosed Real Estate And Assets Held For Sale ProceedsFromSaleOfForeclosedRealEstateAndAssetsHeldForSale	3730000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	28542000	usd
	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	-29519000	usd
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-218097000	usd
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-8848000	usd
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	100000000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	64041000	usd
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1080000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	280000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	1659898000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1608019000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	44185000	usd
CY2024Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	8142000	usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	2.50
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	97602000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	230752000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	213491000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-33835000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-44909000	usd
CY2024Q3	acnb	Financing Receivable Before Allowance For Credit Loss After Unearned Income FinancingReceivableBeforeAllowanceForCreditLossAfterUnearnedIncome	1677112000	usd
CY2023Q4	acnb	Financing Receivable Before Allowance For Credit Loss After Unearned Income FinancingReceivableBeforeAllowanceForCreditLossAfterUnearnedIncome	1627988000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	17214000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	19969000	usd
CY2024Q3	us-gaap	Assets Assets	2420914000	usd
CY2023Q4	us-gaap	Assets Assets	2418847000	usd
CY2024Q3	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	463501000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	500332000	usd
CY2024Q3	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	1327816000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities Domestic InterestBearingDepositLiabilitiesDomestic	1361481000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	69000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-739000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	28000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-27000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	19000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-22000	usd
CY2024Q3	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	usd
CY2023Q3	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	14000	usd
	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	0	usd
	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	337000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	6297000	usd
CY2024Q3	us-gaap	Equipment Expense EquipmentExpense	1698000	usd
CY2023Q3	us-gaap	Equipment Expense EquipmentExpense	1554000	usd
	us-gaap	Equipment Expense EquipmentExpense	4997000	usd
	us-gaap	Equipment Expense EquipmentExpense	4784000	usd
CY2024Q3	us-gaap	Occupancy Net OccupancyNet	945000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	942000	usd
	us-gaap	Occupancy Net OccupancyNet	3066000	usd
	us-gaap	Occupancy Net OccupancyNet	2981000	usd
CY2024Q3	us-gaap	Professional Fees ProfessionalFees	409000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	617000	usd
	us-gaap	Professional Fees ProfessionalFees	1554000	usd
	us-gaap	Professional Fees ProfessionalFees	1600000	usd
CY2024Q3	acnb	Fdic And Regulatory FdicAndRegulatory	365000	usd
CY2023Q3	acnb	Fdic And Regulatory FdicAndRegulatory	388000	usd
	acnb	Fdic And Regulatory FdicAndRegulatory	1088000	usd
	acnb	Fdic And Regulatory FdicAndRegulatory	932000	usd
CY2024Q3	us-gaap	Taxes Other TaxesOther	360000	usd
CY2023Q3	us-gaap	Taxes Other TaxesOther	323000	usd
	us-gaap	Taxes Other TaxesOther	1086000	usd
	us-gaap	Taxes Other TaxesOther	965000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	352000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	940000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1072000	usd
CY2024Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.32
CY2024Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2723000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	306755000	usd
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	23-2233457
	dei	Entity Address Address Line1 EntityAddressAddressLine1	16 Lincoln Square
	dei	Entity Address City Or Town EntityAddressCityOrTown	Gettysburg
	dei	Local Phone Number LocalPhoneNumber	334-3161
	dei	Security12b Title Security12bTitle	Common Stock, $2.50 par value per share
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	8548625	shares
CY2024Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	24636000	usd
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	21442000	usd
CY2024Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	33456000	usd
CY2023Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	44516000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	58092000	usd
CY2024Q3	us-gaap	Deposits Deposits	1791317000	usd
CY2023Q4	us-gaap	Deposits Deposits	1861813000	usd
CY2024Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	37769000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	56882000	usd
CY2024Q3	us-gaap	Long Term Debt LongTermDebt	255322000	usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	8940133	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	8896119	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	8548625	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	8511453	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	22344000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	22231000	usd
CY2024Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	391508	shares
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	306755000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	277461000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	2627000	usd
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	27241000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	24234000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	80084000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	71356000	usd
CY2024Q3	us-gaap	Interest Expense Domestic Deposits InterestExpenseDomesticDeposits	3112000	usd
CY2023Q3	us-gaap	Interest Expense Domestic Deposits InterestExpenseDomesticDeposits	928000	usd
CY2024Q3	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	20942000	usd
CY2023Q3	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	21745000	usd
	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	62499000	usd
	us-gaap	Interest Revenue Expense Net InterestRevenueExpenseNet	66827000	usd
CY2024Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	81000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	250000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2686000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	74000	usd
CY2024Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	40000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-171000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-370000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	226000	usd
CY2023Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	2629000	usd
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	7649000	usd
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	7371000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	503000	usd
CY2024Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	304000	usd
CY2024Q3	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	236000	usd
CY2023Q3	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	229000	usd
	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	610000	usd
	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	633000	usd
CY2024Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	99000	usd
CY2023Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	159000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	275000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	472000	usd
CY2024Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1137000	usd
CY2023Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1160000	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2024Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1674000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1703000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4910000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5125000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	18244000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	16336000	usd
	us-gaap	Noninterest Expense NoninterestExpense	52297000	usd
	us-gaap	Noninterest Expense NoninterestExpense	48899000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9410000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	11627000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32185000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	35103000	usd
CY2024Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2206000	usd
CY2023Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2583000	usd
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6934000	usd
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7512000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	7204000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	9044000	usd
	us-gaap	Net Income Loss NetIncomeLoss	25251000	usd
	us-gaap	Net Income Loss NetIncomeLoss	27591000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.97
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.24
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.96
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.23
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8507140	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8517917	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8500860	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8518006	shares
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8545578	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8551545	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8532691	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8544732	shares
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	7204000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	9044000	usd
	us-gaap	Net Income Loss NetIncomeLoss	25251000	usd
	us-gaap	Net Income Loss NetIncomeLoss	27591000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3621000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2133000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3034000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-3575000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	12334000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7033000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	10331000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8288000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	16000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	171000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-53000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-556000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	12334000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7033000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	10384000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7732000	usd
CY2024Q3	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossTax	63000	usd
CY2023Q3	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossTax	32000	usd
	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossTax	189000	usd
	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossTax	110000	usd
CY2024Q3	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Before Adjustment After Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossBeforeAdjustmentAfterTax	215000	usd
CY2023Q3	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Before Adjustment After Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossBeforeAdjustmentAfterTax	244000	usd
	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Before Adjustment After Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossBeforeAdjustmentAfterTax	645000	usd
	acnb	Oci Debt Securities Held To Maturity Transfer From Available For Sale Unrealized Holding Gain Loss Before Adjustment After Tax OCIDebtSecuritiesHeldToMaturityTransferFromAvailableForSaleUnrealizedHoldingGainLossBeforeAdjustmentAfterTax	731000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	4000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	52000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	13000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	76000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	15000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	74000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	45000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	246000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	12564000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6715000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	11074000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-6755000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19768000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2329000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	36325000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	20836000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	277461000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	6768000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1915000	usd
CY2024Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	4898	shares
CY2024Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	174000	usd
CY2024Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	4200	shares
CY2024Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	147000	usd
CY2024Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	27424	shares
CY2024Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-408000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	534000	usd
CY2024Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2024Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2547000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	279920000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	11279000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	425000	usd
CY2024Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	6054	shares
CY2024Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	186000	usd
CY2024Q2	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	241000	usd
CY2024Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.32
CY2024Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2720000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	289331000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	7204000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	12564000	usd
CY2024Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5638	shares
CY2024Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	237000	usd
CY2024Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	2642	shares
CY2024Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	102000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	244000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	245042000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses Effect Of Change In Method FinancingReceivableAllowanceForCreditLossesEffectOfChangeInMethod	-2368000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	9023000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6052000	usd
CY2023Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5889	shares
CY2023Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	188000	usd
CY2023Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	850	shares
CY2023Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	29000	usd
CY2023Q1	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	43074	shares
CY2023Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	317000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2384000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	255841000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	9524000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6092000	usd
CY2023Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5526	shares
CY2023Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	185000	usd
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
CY2023Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2389000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	257069000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	9044000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6715000	usd
CY2023Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5165	shares
CY2023Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	170000	usd
CY2023Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	46378	shares
CY2023Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1546000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2384000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	255638000	usd
	us-gaap	Net Income Loss NetIncomeLoss	25251000	usd
	us-gaap	Net Income Loss NetIncomeLoss	27591000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	194000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	31000	usd
	acnb	Gain Loss On Sales Of Loans Property And Foreclosed Real Estate GainLossOnSalesOfLoansPropertyAndForeclosedRealEstate	0	usd
	acnb	Gain Loss On Sales Of Loans Property And Foreclosed Real Estate GainLossOnSalesOfLoansPropertyAndForeclosedRealEstate	337000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1473000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1399000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	69000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-739000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	19000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-22000	usd
	us-gaap	Restricted Stock Expense RestrictedStockExpense	1019000	usd
	us-gaap	Restricted Stock Expense RestrictedStockExpense	317000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2268000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2559000	usd
	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-3056000	usd
	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	300000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1300000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-494000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-93000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	812000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	737000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	397000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	9010000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	1191000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	8404000	usd
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	1345000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10954000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1414000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4144000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4436000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2015000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5019000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	34076000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	31991000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	554000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	904000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	31783000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	26375000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	14336000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	78624000	usd
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	0	usd
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	591000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	1176000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	3848000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	49193000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	77486000	usd
	acnb	Paymentsto Acquire Insurance Bookof Business PaymentstoAcquireInsuranceBookofBusiness	0	usd
	acnb	Paymentsto Acquire Insurance Bookof Business PaymentstoAcquireInsuranceBookofBusiness	174000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	174000	usd
	acnb	Proceeds From Sale Of Foreclosed Real Estate And Assets Held For Sale ProceedsFromSaleOfForeclosedRealEstateAndAssetsHeldForSale	0	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4283000	usd
	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	-36831000	usd
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-33665000	usd
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-19113000	usd
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	60000000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	7990000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	7157000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	249000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1575000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	189000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	543000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-37659000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-164653000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-7866000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-104120000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	65958000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	168161000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	58092000	usd
	us-gaap	Interest Paid Net InterestPaidNet	16848000	usd
	us-gaap	Interest Paid Net InterestPaidNet	3717000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	4175000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	7350000	usd
	acnb	Numberof Community Banking Offices Parent NumberofCommunityBankingOfficesParent	27	bank
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain reclassifications have been made to the prior period financial statements to conform to the current period presentation. Reclassifications had no material effect on prior year net income or stockholders’ equity.</span></div>
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8518006	shares
CY2024Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	38438	shares
CY2023Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	33628	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	31831	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	26726	shares
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8545578	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8551545	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8532691	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	8544732	shares
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.97
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.24
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.06
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.96
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.23
CY2019Q1	acnb	Sharebased Compensation Arrangementby Sharebased Payment Award Equity Instruments Other Than Options Authorizedbutnot Issued SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAuthorizedbutnotIssued	174055	shares
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	19000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	1719000	usd
CY2023	acnb	Proceeds From Sale And Reclassification On Equity Securities Fvni ProceedsFromSaleAndReclassificationOnEquitySecuritiesFVNI	798000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	18000	usd
CY2023	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-11000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	928000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	454864000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	846000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	37631000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	418079000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	64578000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	5540000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	59038000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	501912000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	565000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	50784000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	451693000	usd
CY2023Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	64600000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	5543000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	59057000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	382585000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	37631000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	382585000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	37631000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	59038000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	5540000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	59038000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	5540000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	402517000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	50784000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	402517000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	50784000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	59057000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	5543000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	59057000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	5543000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	16322000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	16029000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	110053000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	102347000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	4191000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3824000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	55921000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	48125000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	24314000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	23966000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	2000000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1546000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	34160000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	29398000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	270568000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	250032000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount	1913000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	1850000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	454864000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	418079000	usd
CY2024Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	64578000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	59038000	usd
CY2024Q3	acnb	Proceeds From Sale Of Debt Securities And Sale Of Equity Securities ProceedsFromSaleOfDebtSecuritiesAndSaleOfEquitySecurities	15908000	usd
CY2023Q3	acnb	Proceeds From Sale Of Debt Securities And Sale Of Equity Securities ProceedsFromSaleOfDebtSecuritiesAndSaleOfEquitySecurities	0	usd
	acnb	Proceeds From Sale Of Debt Securities And Sale Of Equity Securities ProceedsFromSaleOfDebtSecuritiesAndSaleOfEquitySecurities	46119000	usd
	acnb	Proceeds From Sale Of Debt Securities And Sale Of Equity Securities ProceedsFromSaleOfDebtSecuritiesAndSaleOfEquitySecurities	79215000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	87000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	243000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	18000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	982000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	204400000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	233700000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1678088000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	1629700000	usd
CY2024Q3	acnb	Financing Receivable Unearned Income Before Allowance For Credit Loss FinancingReceivableUnearnedIncomeBeforeAllowanceForCreditLoss	976000	usd
CY2023Q4	acnb	Financing Receivable Unearned Income Before Allowance For Credit Loss FinancingReceivableUnearnedIncomeBeforeAllowanceForCreditLoss	1712000	usd
CY2024Q3	acnb	Financing Receivable Before Allowance For Credit Loss After Unearned Income FinancingReceivableBeforeAllowanceForCreditLossAfterUnearnedIncome	1677112000	usd
CY2023Q4	acnb	Financing Receivable Before Allowance For Credit Loss After Unearned Income FinancingReceivableBeforeAllowanceForCreditLossAfterUnearnedIncome	1627988000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1678088000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	438000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	1629700000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1162000	usd
CY2024Q3	acnb	Financing Receivable Nonaccrual With A Related Allowance FinancingReceivableNonaccrualWithARelatedAllowance	1305000	usd
CY2024Q3	acnb	Financing Receivable Nonaccrual Without A Related Allowance FinancingReceivableNonaccrualWithoutARelatedAllowance	4828000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	6133000	usd
CY2023Q4	acnb	Financing Receivable Nonaccrual With A Related Allowance FinancingReceivableNonaccrualWithARelatedAllowance	1319000	usd
CY2023Q4	acnb	Financing Receivable Nonaccrual Without A Related Allowance FinancingReceivableNonaccrualWithoutARelatedAllowance	1692000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3011000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	6133000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	438000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	1162000	usd
CY2024Q3	acnb	Financing Receivable Nonperforming Loans FinancingReceivableNonperformingLoans	6571000	usd
CY2023Q4	acnb	Financing Receivable Nonperforming Loans FinancingReceivableNonperformingLoans	4173000	usd
CY2024Q3	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	515000	usd
CY2023Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1300000	usd
CY2024	acnb	Loan Restructuring Modification Measurement Input LoanRestructuringModificationMeasurementInput	0	usd
CY2024Q3	acnb	Financing Receivable Modified Period From The Original Modification Default FinancingReceivableModifiedPeriodFromTheOriginalModificationDefault	P12M
CY2024Q3	acnb	Financing Receivable Modified Past Due Period FinancingReceivableModifiedPastDuePeriod	P90D
CY2024Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	153616000	usd
CY2024Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	260491000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	277308000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	215722000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	103641000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	516235000	usd
CY2024Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	151075000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	1678088000	usd
	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	9000	usd
	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	0	usd
	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	7000	usd
	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	147000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	163000	usd
CY2023Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	252168000	usd
CY2023Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	300562000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	233941000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	113922000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	109765000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	479125000	usd
CY2023Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	140217000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	1629700000	usd
CY2023	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	48000	usd
CY2023	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	83000	usd
CY2023	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	42000	usd
CY2023	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	55000	usd
CY2023	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	23000	usd
CY2023	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	188000	usd
CY2023	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	67000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	506000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2700000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-370000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	17162000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	51000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	22000	usd
CY2024Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	81000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	17214000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	19969000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	163000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	94000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2686000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	17214000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	19148000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	190000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	56000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	250000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	19264000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	17861000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	389000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	100000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	74000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	19264000	usd
CY2024Q3	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	463501000	usd
CY2023Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	500332000	usd
CY2024Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	509930000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	524289000	usd
CY2024Q3	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	249197000	usd
CY2023Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	264907000	usd
CY2024Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	311958000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	340134000	usd
CY2024Q3	acnb	Deposits Demand And Savings DepositsDemandAndSavings	1534586000	usd
CY2023Q4	acnb	Deposits Demand And Savings DepositsDemandAndSavings	1629662000	usd
CY2024Q3	us-gaap	Time Deposits TimeDeposits	256731000	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	232151000	usd
CY2024Q3	us-gaap	Deposits Deposits	1791317000	usd
CY2023Q4	us-gaap	Deposits Deposits	1861813000	usd
CY2024Q3	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	1500000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	0	usd
CY2024Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	37769000	usd
CY2023Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	56882000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	10600000	usd
CY2024Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	192000000.0	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From One To Two Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate	80000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	80000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	90000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	60000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	35000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	35000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	30000000	usd
CY2023Q4	acnb	Federal Home Loan Bank Advance Maturity Year Six FederalHomeLoanBankAdvanceMaturityYearSix	0	usd
CY2024Q3	us-gaap	Long Term Debt LongTermDebt	255322000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	195292000	usd
CY2024Q3	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0452
CY2024Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	920100000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	684000000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	107000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	124000	usd
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	321000	usd
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	372000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	373000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	373000	usd
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1121000	usd
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1119000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	712000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	663000	usd
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2136000	usd
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1989000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-20000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-98000	usd
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-58000	usd
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-294000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-212000	usd
CY2023Q3	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-68000	usd
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-636000	usd
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-204000	usd
	acnb	Loansand Leases Receivable Loanto Value Ratio Requirement LoansandLeasesReceivableLoantoValueRatioRequirement	0.80
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2024Q3	acnb	Interest Income And Other Income From External Customers InterestIncomeAndOtherIncomeFromExternalCustomers	34074000	usd
CY2024Q3	us-gaap	Interest Expense InterestExpense	6299000	usd
CY2024Q3	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	744000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9410000	usd
CY2024Q3	us-gaap	Assets Assets	2420914000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	44185000	usd
CY2024Q3	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	222000	usd
CY2023Q3	acnb	Interest Income And Other Income From External Customers InterestIncomeAndOtherIncomeFromExternalCustomers	30531000	usd
CY2023Q3	us-gaap	Interest Expense InterestExpense	2489000	usd
CY2023Q3	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	825000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	11627000	usd
CY2023Q3	us-gaap	Assets Assets	2388522000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	44185000	usd
CY2023Q3	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	68000	usd
	acnb	Interest Income And Other Income From External Customers InterestIncomeAndOtherIncomeFromExternalCustomers	99011000	usd
	us-gaap	Interest Expense InterestExpense	17585000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2268000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32185000	usd
CY2024Q3	us-gaap	Assets Assets	2420914000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	44185000	usd
	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	587000	usd
	acnb	Interest Income And Other Income From External Customers InterestIncomeAndOtherIncomeFromExternalCustomers	88831000	usd
	us-gaap	Interest Expense InterestExpense	4529000	usd
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2559000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	35103000	usd
CY2023Q3	us-gaap	Assets Assets	2388522000	usd
CY2023Q3	us-gaap	Goodwill Goodwill	44185000	usd
	us-gaap	Segment Expenditure Addition To Long Lived Assets SegmentExpenditureAdditionToLongLivedAssets	174000	usd
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
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0000715579-24-000117.txt	Edgar Link	pending
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$ACNB
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2024 Q4 Form 10-Q Financial Statement

#000071557924000117 Filed on November 07, 2024

Income Statement

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$ACNB ACNB CORP Stock $acnb

2024 Q4 Form 10-Q Financial Statement

#000071557924000117 Filed on November 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ACNB
ACNB CORP Stock $acnb