ACNB CORP, 10-K filed on 3/14/2025
Annual Report
v3.25.0.1
Cover Page - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Mar. 05, 2025
Jun. 30, 2024
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 1-35015    
Entity Registrant Name ACNB CORPORATION    
Entity Incorporation, State or Country Code PA    
Entity Tax Identification Number 23-2233457    
Entity Address, Address Line One 16 Lincoln Square    
Entity Address, City or Town Gettysburg    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 17325    
City Area Code 717    
Local Phone Number 334-3161    
Title of 12(b) Security Common Stock, $2.50 par value per share    
Trading Symbol ACNB    
Security Exchange Name NASDAQ    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Document Financial Statement Error Correction false    
Entity Public Float     $ 299.1
Entity Common Stock, Shares Outstanding   10,542,732  
Entity Central Index Key 0000715579    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
ICFR Auditor Attestation Flag true    
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Audit Information
 12 Months Ended
Dec. 31, 2024
Audit Information [Abstract]  
Auditor Firm ID 173
Auditor Name Crowe LLP
Auditor Location Washington, DC
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CONSOLIDATED STATEMENTS OF CONDITION - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
ASSETS    
Cash and due from banks $ 16,352 $ 21,442
Interest-bearing deposits with banks 30,910 44,516
Total Cash and Cash Equivalents 47,262 65,958
Equity securities with readily determinable fair values 919 928
Investment securities available for sale, at estimated fair value 393,975 451,693
Investment securities held to maturity, at amortized cost (fair value $56,924, $59,057) 64,578 64,600
Loans held for sale 426 280
Total loans, net of unearned income 1,682,910 1,627,988
Less: Allowance for credit losses (17,280) (19,969)
Loans, net 1,665,630 1,608,019
Premises and equipment, net 25,454 26,283
Right of use asset 2,663 2,615
Restricted investment in bank stocks 10,853 9,677
Investment in bank-owned life insurance 81,850 79,871
Investments in low-income housing partnerships 877 1,003
Goodwill 44,185 44,185
Intangible assets, net 7,838 9,082
Foreclosed assets held for resale 438 467
Other assets 47,882 54,186
Total Assets 2,394,830 2,418,847
LIABILITIES AND STOCKHOLDERS’ EQUITY    
Deposits: Non-interest bearing 451,503 500,332
Deposits: Interest bearing 1,340,998 1,361,481
Total Deposits 1,792,501 1,861,813
Short-term borrowings 15,826 56,882
Long-term borrowings 255,333 195,292
Lease liability 2,764 2,615
Allowance for unfunded commitments 1,394 1,719
Other liabilities 23,739 23,065
Total Liabilities 2,091,557 2,141,386
STOCKHOLDERS' EQUITY    
Preferred stock, $2.50 par value; 20,000,000 shares authorized; no shares outstanding at December 31, 2024 and 2023 0 0
Common stock, $2.50 par value; 20,000,000 shares authorized; 8,945,293 and 8,896,119 shares issued; 8,553,785 and 8,511,453 shares outstanding at December 31, 2024 and 2023, respectively 22,357 22,231
Treasury stock, at cost 391,508 and 384,666 shares at December 31, 2024 and 2023, respectively (11,203) (10,954)
Additional paid-in capital 99,163 97,602
Retained earnings 234,624 213,491
Accumulated other comprehensive loss (41,668) (44,909)
Total Stockholders’ Equity 303,273 277,461
Total Liabilities and Stockholders’ Equity $ 2,394,830 $ 2,418,847
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CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Securities held to maturity, fair value $ 56,924 $ 59,057
Preferred stock, par value $ 2.50 $ 2.50
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, shares outstanding 0 0
Common stock, par value $ 2.50 $ 2.50
Common stock, shares authorized 20,000,000 20,000,000
Common stock, shares issued 8,945,293 8,896,119
Common stock, shares outstanding 8,553,785 8,511,453
Treasury stock, shares 391,508 384,666
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CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Loans, including fees:      
Taxable $ 90,547 $ 79,433 $ 68,898
Tax-exempt 1,232 1,405 1,348
Investment Securities:      
Taxable 10,748 10,985 9,799
Tax-exempt 1,136 1,168 1,144
Dividends 970 331 104
Other 2,832 3,318 5,756
Total Interest and Dividend Income 107,465 96,640 87,049
INTEREST EXPENSE      
Deposits 11,194 3,695 2,561
Short-term borrowings 859 898 77
Long-term borrowings 11,801 3,727 986
Total Interest Expense 23,854 8,320 3,624
Net Interest Income 83,611 88,320 83,425
Financing Receivable, Credit Loss, Expense (Reversal) (2,763) 844  
Net Interest Income after (Reversal of) Provisions for Credit Losses and Unfunded Commitments 86,374 87,476 83,425
NONINTEREST INCOME      
Insurance commissions 9,754 9,319 8,307
Earnings on investment in bank-owned life insurance 1,979 1,878 1,532
Net gains (losses) on sales or calls of investment securities 69 (5,240) (234)
Net (losses) gains on equity securities (9) 18 (298)
Net gains on sales of low income housing partnership 0 0 421
Gain on assets held for sale 0 337 0
Other 963 1,127 1,044
Total Noninterest Income 24,730 18,445 21,807
NONINTEREST EXPENSES      
Salaries and employee benefits 42,929 40,931 35,979
Equipment 7,321 6,514 6,612
Net occupancy 4,162 3,908 4,076
Professional services 2,140 2,320 2,086
Other tax 1,446 1,269 1,632
FDIC and regulatory 1,425 1,388 1,128
Intangible assets amortization 1,244 1,424 1,492
Merger-related 2,045 0 0
Other 7,973 8,318 7,276
Total Noninterest Expenses 70,685 66,072 60,281
Income Before Income Taxes 40,419 39,849 44,951
Provision for income taxes 8,573 8,161 9,199
Net Income $ 31,846 $ 31,688 $ 35,752
PER SHARE DATA      
Basic earnings $ 3.75 $ 3.72 $ 4.15
Diluted earnings $ 3.73 $ 3.71 $ 4.15
Weighted average shares outstanding, basic (in shares) 8,503,473 8,507,803 8,623,012
Weighted average shares outstanding, diluted (in shares) 8,536,965 8,536,125 8,623,012
Financing Receivable Excluding Unfunded Commitments      
INTEREST EXPENSE      
Financing Receivable, Credit Loss, Expense (Reversal) $ (2,437) $ 860 $ 0
Unfunded Loan Commitment      
INTEREST EXPENSE      
Financing Receivable, Credit Loss, Expense (Reversal) (326) (16) 0
Wealth management      
NONINTEREST INCOME      
Revenue from contract with customer, excluding assessed tax 4,226 3,644 3,160
Service charges on deposits      
NONINTEREST INCOME      
Revenue from contract with customer, excluding assessed tax 4,144 3,958 4,066
ATM debit card charges      
NONINTEREST INCOME      
Revenue from contract with customer, excluding assessed tax 3,303 3,348 3,322
Gain from mortgage loans held for sale      
NONINTEREST INCOME      
Revenue from contract with customer, excluding assessed tax $ 301 $ 56 $ 487
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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
NET INCOME $ 31,846 $ 31,688 $ 35,752
INVESTMENT SECURITIES      
Unrealized gains (losses) arising during the period, net of income tax expense (benefit) of $633, $1,814 and $(14,499) respectively 1,992 6,814 (46,441)
Reclassification adjustment for net AFS investment securities (gains) losses included in net income, net of income tax effect of $(16), $1,188 and $55, respectively (53) 4,052 193
Total unrealized gain (loss) on AFS investment securities 1,939 10,866 (46,248)
Unrealized losses on securities previously transferred to HTM, net of income tax benefit of $—, $— and $(1,072), respectively 0 0 (3,751)
Amortization of unrealized losses on AFS investment securities transferred to HTM, net of income tax expense of $254, $203 and $211, respectively 853 916 739
PENSION      
Amortization of pension net loss, net of income tax expense of $18, $76 and $90 60 258 317
Unrecognized net gain, net of income tax expense of $114, $312 and $15, respectively 389 1,063 476
Total unrealized gain on pension 449 1,321 793
TOTAL OTHER COMPREHENSIVE INCOME (LOSS) 3,241 13,103 (48,467)
TOTAL COMPREHENSIVE INCOME (LOSS) $ 35,087 $ 44,791 $ (12,715)
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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
SECURITIES: Unrealized gains (losses) arising during the period, income taxes $ 633 $ 1,814 $ (14,499)
SECURITIES: Reclassification adjustment for net AFS investment securities (gains) losses included in net income, income taxes (16) 1,188 55
SECURITIES: Unrealized losses on securities previously transferred to HTM, income taxes 0 0 (1,072)
SECURITIES: Amortization of unrealized losses on AFS investment securities transferred to HTM, income taxes 254 203 211
PENSION: Amortization of pension net loss, income taxes 18 76 90
PENSION: Unrecognized gain, income taxes $ 114 $ 312 $ 15
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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Treasury Stock
Additional Paid-in Capital
Retained Earnings
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2021 $ 272,114   $ 21,978 $ (2,245) $ 94,688 $ 167,238   $ (9,545)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 35,752         35,752    
Other comprehensive income (loss), net of taxes (48,467)             (48,467)
Common stock shares issued 713   52   661      
Repurchased shares (6,682)     (6,682)        
Restricted stock grants, net of forfeitures and withheld for taxes 729   56   673      
Compensation expense for restricted shares 729              
Cash dividends declared (9,117)         (9,117)    
Ending Balance at Dec. 31, 2022 245,042 $ (2,368) 22,086 (8,927) 96,022 193,873 $ (2,368) (58,012)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 31,688         31,688    
Other comprehensive income (loss), net of taxes 13,103             13,103
Common stock shares issued 721   51   670      
Repurchased shares (2,027)     (2,027)        
Restricted stock grants, net of forfeitures and withheld for taxes 0   94   (94)      
Compensation expense for restricted shares 1,004       1,004      
Cash dividends declared (9,702)         (9,702)    
Ending Balance at Dec. 31, 2023 277,461   22,231 (10,954) 97,602 213,491   (44,909)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 31,846         31,846    
Other comprehensive income (loss), net of taxes 3,241             3,241
Common stock shares issued 832   55   777      
Repurchased shares (249)     (249)        
Restricted stock grants, net of forfeitures and withheld for taxes (408)   71   (479)      
Compensation expense for restricted shares 1,263       1,263      
Cash dividends declared (10,713)         (10,713)    
Ending Balance at Dec. 31, 2024 $ 303,273   $ 22,357 $ (11,203) $ 99,163 $ 234,624   $ (41,668)
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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]      
Accounting Standards Update [Extensible Enumeration]     Accounting Standards Update 2016-13 [Member]
Common stock issued, shares 21,750 20,361 20,908
Treasury stock acquired, shares 6,842 61,066 206,929
Restricted stock grants, shares 27,424 43,074 21,935
Cash dividends declared, per share $ 1.26 $ 1.14 $ 1.06
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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 31,846 $ 31,688 $ 35,752
Adjustments to reconcile net income to net cash provided by operating activities:      
Gain on sales of loans originated for sale (301) (56) (487)
Gain on sales of assets held for sale 0 (337) 0
Loss on sale of premises and equipment 0 0 41
Earnings on investment in bank-owned life insurance (1,979) (1,878) (1,532)
(Gain) loss on sales or calls of securities (69) 5,240 234
Loss (gain) on equity securities 9 (18) 298
Gain on sale of low-income housing partnership 0 0 (421)
Restricted stock compensation expense 1,263 1,004 729
Depreciation and amortization 3,033 3,362 3,796
(Reversal of) provision for credit losses and reversal of unfunded commitments (2,763) 844 0
Net amortization of investment securities premiums 1,702 690 2,156
Increase in interest receivable (109) (1,165) (1,395)
Increase (decrease) in interest payable 757 743 (58)
Mortgage loans originated for sale (13,090) (2,646) (36,664)
Proceeds from sales of loans originated for sale 13,245 2,545 39,221
Decrease (increase) in other assets 5,351 (7,449) (4,303)
Deferred income tax 779 2,376 924
Increase in other liabilities 108 5,659 910
Net Cash Provided by Operating Activities 39,782 40,602 39,201
CASH FLOWS FROM INVESTING ACTIVITIES      
Proceeds from calls/maturities of investment securities held to maturity 727 1,097 2,903
Proceeds from calls/maturities of investment securities available for sale 44,707 32,594 58,578
Proceeds from sales of investment securities held to maturity 0 0 1,054
Proceeds from sales of investment securities available for sale 14,336 125,241 3,129
Proceeds from sales of equity securities 0 592 811
Purchase of investment securities available for sale 0 (48,838) (284,336)
Purchase of investment securities held to maturity 0 0 (22,204)
Purchase of equity securities 0 0 (206)
(Purchase)/redemption of restricted investment in bank stocks (1,176) (8,048) 674
Net increase in loans (55,206) (89,589) (71,829)
Proceeds from sale of low-income housing partnerships 0 0 421
Purchase of bank-owned life insurance 0 0 (12,200)
Acquisition of insurance books of business/agency 0 (174) (7,800)
Capital expenditures (960) (1,168) (1,811)
Proceeds from sales of premises and equipment 0 0 1,093
Proceeds from sales of assets held for sale 0 3,730 0
Net Cash Provided by (Used in) Investing Activities 2,428 15,437 (331,723)
CASH FLOWS FROM FINANCING ACTIVITIES      
Net decrease in noninterest-bearing deposits (48,829) (94,717) (28,311)
Net decrease in interest-bearing deposits (20,483) (242,445) (199,103)
Net (decrease) increase in short-term borrowings (41,056) 14,928 6,752
Proceeds from long-term borrowings 60,000 175,000 1,500
Repayments on long-term borrowings 0 0 (15,200)
Dividends paid (10,713) (9,702) (9,117)
Common stock repurchased (249) (2,027) (6,682)
Common stock issued, net of restricted stock forfeitures and withheld for taxes 424 721 713
Net Cash Used In Financing Activities (60,906) (158,242) (249,448)
Net Decrease in Cash and Cash Equivalents (18,696) (102,203) (541,970)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance 65,958 168,161 710,131
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance 47,262 65,958 168,161
Supplemental disclosures of cash flow information:      
Cash paid for interest 23,097 7,155 3,682
Cash paid for income taxes 6,628 10,030 7,225
Supplemental disclosures of certain noncash activities:      
Recognition of operating lease right of use assets 0 126 472
Recognition of operating lease liabilities 0 126 472
Investments transferred from available for sale to held to maturity 0 0 39,683
Premises and equipment transferred to fixed assets held for sale 0 0 3,393
Loans transferred to foreclosed assets held for resale and other foreclosed transactions $ 32 $ 0 $ 474
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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Nature of Operations
ACNB Corporation, headquartered in Gettysburg, Pennsylvania, provides banking, wealth management and insurance services to businesses and consumers through its wholly-owned subsidiaries, ACNB Bank and ACNB Insurance Services. The Bank engages in full-service commercial and consumer banking and wealth management services, including trust and retail brokerage, through its 27 community banking offices, including 18 community banking office locations in Adams, Cumberland, Franklin, Lancaster and York Counties, Pennsylvania, and nine community banking office locations in Carroll and Frederick Counties, Maryland. There are also loan production offices in York, Pennsylvania, and Hunt Valley, Maryland.
ACNB Insurance Services, Inc. is a full-service insurance agency based in Westminster, Maryland, with additional locations in Jarrettsville, Maryland, and Gettysburg, Pennsylvania. The agency offers a broad range of property, casualty, health, life and disability insurance to both individual and commercial clients.
Basis of Financial Statements
The Consolidated Financial Statements have been prepared in accordance with GAAP and include the accounts of the Corporation and its wholly-owned subsidiaries. All significant intercompany transactions have been eliminated.
Certain amounts in the prior years’ Consolidated Financial Statements and notes have been reclassified to conform to the current presentation. The Corporation evaluates subsequent events through the filing of this report with the SEC.
Recent Merger
Effective February 1, 2025, ACNB closed the acquisition of Traditions Bancorp, Inc., holding company for Traditions Bank, York, Pennsylvania. Traditions was merged with and into a wholly-owned subsidiary of ACNB Corporation immediately followed by the merger of Traditions Bank with and into ACNB Bank. ACNB Bank is operating the former Traditions Bank offices as “Traditions Bank, A Division of ACNB Bank”. Traditions Bank operated eight community banking offices in South Central Pennsylvania which were included in the acquisition. In connection with the close of the acquisition, Traditions stockholders received 0.7300 shares of ACNB Corporation common stock for each share of Traditions common stock that they owned as of the closing date, with cash paid in lieu of fractional shares. ACNB issued 2,035,270 shares of its common stock, and cash in exchange for fractional shares based on $41.10 per whole share of ACNB common stock. The transaction is valued at $83.8 million. ACNB is currently finalizing the accounting for this transaction and expects to complete the preliminary allocation of the purchase consideration to the assets acquired and liabilities assumed by the end of the first quarter of 2025.

As of December 31, 2024 and 2023, Traditions had total assets of $870.1 million and $840.1 million, respectively, total loans of $674.4 million and $668.8 million, respectively, and total deposits of $749.3 million and $731.1 million, respectively. Common shares outstanding totaled 2,788,164 and 2,736,544 at December 31, 2024 and 2023, respectively.
Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for credit losses.
Cash and Cash Equivalents
Cash and cash equivalents include cash on hand, balances due from banks, and federal funds sold, all of which mature within 90 days and interest-bearing deposits with banks. Net cash flows are reported for customer loan and deposit transactions, interest-bearing deposits in other financial institutions, and federal funds purchased and repurchase agreements. Interest-bearing deposits in other financial institutions are carried at cost.
Investment Securities
On January 1, 2023 the Corporation adopted ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”, universally referred to as CECL. ASU 2016-13 applies to all financial instruments carried at amortized cost, including HTM securities, and makes targeted improvements to the accounting for credit losses on
AFS securities. In addition, Topic 326 amends the accounting for credit losses on certain other debt securities. The Corporation did not record any allowance for credit losses on its HTM debt securities and did not record any impairment on its AFS debt securities as a result of adopting Topic 326.
ACNB conducted a review of its investment portfolio and determined that for certain classes of securities it would be appropriate to assume the expected credit loss to be zero. This zero-credit loss assumption applies to direct debt issuances of the U.S. Treasury and U.S. agencies. The reasons behind the adoption of the zero-credit loss assumption are as follows:
•     High credit rating;
•     Long history with no credit losses;
•     Guaranteed by a sovereign entity;
•     Widely recognized as “risk-free rate”;
•     Can print its own currency;
•     Currency is routinely held by central banks, used in international commerce, and commonly viewed as reserve currency; and,
•     Currently under the U.S. Government conservatorship or receivership.
ACNB continuously monitors any changes in economic conditions, credit downgrades, changes to explicit or implicit guarantees granted to certain debt issuers, and any other relevant information that would indicate potential credit deterioration and prompt ACNB to reconsider its zero-credit loss assumption. As of December 31, 2024, no HTM debt securities required an ACL.
ACNB monitors non-U.S. Treasury and non-U.S. agency debt for potential credit deterioration on a quarterly basis. An analysis of the materiality of the impact to the ACL is performed. If it is determined there is a material impact, ACNB will book a reserve to the ACL or record an impairment. As of December 31, 2024 no reserves or impairment were booked related to these securities.
Equity securities with readily determinable fair values are recorded at fair value with changes in fair value recognized in net income. Debt securities that management has the positive intent and ability to hold to maturity are classified as “held to maturity” and recorded at amortized cost. Debt securities not classified as HTM or trading are classified as “available for sale” and recorded at fair value, with unrealized gains and losses excluded from earnings and reported, net of tax, in other comprehensive income (loss).
Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. In relation to HTM securities, any declines in the fair value that are assumed to impair the credit quality of such debt instruments are evaluated and the estimated loss is incorporated into the Banks’ expected credit losses for any given period. In estimating impairment losses on debt securities, management considers (1) whether management intends to sell the security, or (2) if it is more likely than not that management will be required to sell the security before recovery, or (3) if management does not expect to recover the entire amortized cost basis. In assessing potential impairment for equity securities, consideration is given to management’s intention and ability to hold the securities until recovery of unrealized losses. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.
Transfers of debt securities into the HTM category from the AFS category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in other comprehensive income (loss) and in the carrying value of the HTM securities. Such amounts are amortized over the remaining expected life of the security.
Loans Held for Sale
Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors or current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to income.
Mortgage loans held for sale are sold with the mortgage servicing rights released to another financial institution through a correspondent relationship. The correspondent financial institution absorbs all of the risk related to rate lock commitments. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price and the carrying value of the related mortgage loans sold.
Loans
The Corporation grants commercial, residential, and consumer loans to customers. A substantial portion of the loan portfolio is represented by commercial real estate and residential mortgage loans throughout southcentral Pennsylvania and northern Maryland. The ability of the Corporation’s debtors to honor their contracts is dependent upon the real estate values and general economic conditions in this area.
Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs and any deferred fees or costs on originated loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.
The loans receivable portfolio is segmented into commercial, residential mortgage, home equity lines of credit, and consumer loans. Commercial loans consist of the following classes: commercial real estate, commercial and industrial and real estate construction.
The accrual of interest on commercial loans and residential mortgage is discontinued at the time the loan is 90 days past due unless the credit is well-secured and in process of collection. Consumer loans, including home equity lines of credit, are typically charged off no later than 120 days past due. Past due status is based on the contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged off at an earlier date if collection of principal or interest is considered doubtful. Facts and circumstances can arise that cause a loan to be placed on nonaccrual if payment capacity is insufficient.
All interest accrued, but not collected, for loans that are placed on nonaccrual or charged off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual status. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Allowance for Credit Losses
As mentioned above, in 2023 the Corporation adopted CECL which replaced the incurred loss methodology. The measurement of expected credit losses under CECL is applicable to financial assets measured at amortized cost, including loans, HTM securities and purchased financial assets, held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. It also applies to OBS credit exposures, such as loan commitments, standby letters of credit, financial guarantees and other similar instruments. Financial institutions and other organizations will now use forecasted information to better inform their credit loss estimates. Many of the loss estimation techniques applied previously are still permitted, although the inputs to those techniques changed to reflect the full amount of expected credit losses.

The Corporation maintains an ACL at a level determined to be adequate to absorb expected credit losses associated with the Corporation’s financial instruments over the life of those instruments as of the balance sheet date. As part of its process of adopting CECL, management implemented a third-party software solution and determined appropriate loan segments, methodologies, model assumptions and qualitative components. The Corporation’s systematic ACL methodology is based on the following portfolio segments: Commercial Real Estate, Residential Mortgage, Commercial and Industrial, Home Equity Lines of Credit, Real Estate Construction and Consumer. The loan portfolio is segmented by loan types that have similar risk characteristics and types of collateral and that behave similarly during economic cycles. The calculation includes both a quantitative and qualitative component which incorporates the forecasting of certain economic variables. The Bank engaged a third-party to assist in developing the CECL model and to assist with evaluation of data and methodologies related to this standard. The Bank’s CECL Committee, which includes members from Credit Administration, Accounting/Finance, Risk Management and Internal Audit, has oversight by the Chief Executive Officer, Chief Financial Officer, and Chief Credit Officer. The Bank’s implementation plan also included the assessment and documentation of appropriate processes, policies and internal controls. Management had a third-party independent consultant review and validate the CECL model.

The ultimate impact of adopting Topic 326, and at each subsequent reporting period, is highly dependent on credit quality, macroeconomic forecasts and conditions, composition of the loans and securities portfolio, along with other management judgments. The Corporation adopted Topic 326 using the modified retrospective method.

The segmentation in the CECL model is different from the segmentation in the incurred loss model, however there was minimal impact on the presentation of the financial statement disclosures. The following is a discussion of the key risks by portfolio segment that management assesses in preparing the ACL.
Commercial Real Estate — The Corporation engages in commercial real estate lending in its primary market and surrounding areas. The portfolio is secured primarily by commercial retail space, office buildings, and hotels. Generally, commercial real
estate loans have terms that do not exceed 20 years, have loan-to-value ratios of up to 80% of the appraised value of the property, and are typically secured by personal guarantees of the borrowers.
In underwriting these loans, the Corporation performs a thorough analysis of the financial condition of the borrower, the borrower’s credit history, and the reliability and predictability of the cash flow generated by the property securing the loan. Appraisals on properties securing commercial real estate loans originated by the Corporation are performed by independent appraisers.
Commercial real estate loans generally present a higher level of risk than other types of loans due primarily to the effect of general economic conditions and the complexities involved in valuing the underlying collateral.
Residential Mortgage — One-to-four family residential mortgage loan originations, including home equity closed-end loans, are generated by the Corporation’s marketing efforts, its present customers, walk-in customers, and referrals. These loans originate primarily within the Corporation’s Market Area or with customers primarily from the Market Area.
The Corporation offers fixed-rate and adjustable-rate mortgage loans with terms up to a maximum of 30 years for both permanent structures and those under construction. The Corporation’s one-to-four family residential mortgage originations are secured primarily by properties located in its primary Market Area and surrounding areas. The majority of the Corporation’s residential mortgage loans originate with a loan-to-value of 80% or less. Loans in excess of 80% are required to have private mortgage insurance.
In underwriting one-to-four family residential real estate loans, the Corporation evaluates both the borrower’s financial ability to repay the loan as agreed and the value of the property securing the loan. Properties securing real estate loans made by the Corporation are appraised by independent appraisers. The Corporation generally requires borrowers to obtain an attorney’s title opinion or title insurance, as well as fire and property insurance (including flood insurance, if necessary) in an amount not less than the amount of the loan. The Corporation has not engaged in subprime residential mortgage originations.
Residential mortgage loans are subject to risk due primarily to general economic conditions, as well as periods of weak housing markets.
Commercial and Industrial — The Corporation originates commercial and industrial loans primarily to businesses located in its primary Market Area and surrounding areas. These loans are used for various business purposes which include short-term loans and lines of credit to finance machinery and equipment purchases, inventory, and accounts receivable. Generally, the maximum term for loans extended on machinery and equipment is based on the projected useful life of such machinery and equipment. Most business lines of credit are written on demand and may be renewed annually.
Commercial and industrial loans are generally secured with short-term assets; however, in many cases, additional collateral such as real estate is provided as additional security for the loan. Loan-to-value maximum values have been established by the Corporation and are specific to the type of collateral. Collateral values may be determined using invoices, inventory reports, accounts receivable aging reports, collateral appraisals, etc.
In underwriting commercial and industrial loans, an analysis is performed to evaluate the borrower’s capacity to repay the loan, the adequacy of the borrower’s capital and collateral, as well as the conditions affecting the borrower. Evaluation of the borrower’s past, present and future cash flows is also an important aspect of the Corporation’s analysis. Commercial loans generally present a higher level of risk than other types of loans due primarily to the effect of general economic conditions.
Home Equity Lines of Credit — The Corporation originates home equity lines of credit primarily within the Corporation’s Market Area or with customers primarily from the Market Area. Home equity lines of credit are generated by the Corporation’s marketing efforts, its present customers, walk-in customers, and referrals.
Home equity lines of credit are secured by the borrower’s primary residence with a maximum loan-to-value of 90% and a maximum term of 20 years. In underwriting home equity lines of credit, the Corporation evaluates both the value of the property securing the loan and the borrower’s financial ability to repay the loan as agreed. The ability to repay is determined by the borrower’s employment history, current financial condition, and credit background.
Home equity lines of credit generally present a moderate level of risk due primarily to general economic conditions, as well as periods of weak housing markets. Junior liens inherently have more credit risk by virtue of the fact that another financial institution may have a higher security position in the case of foreclosure liquidation of collateral to extinguish the debt. Generally, foreclosure actions could become more prevalent if the real estate markets are weak and property values deteriorate.
Real Estate Construction — The Corporation engages in real estate construction lending in its primary market and surrounding areas. The Corporation’s real estate construction lending consists of commercial and residential site development loans, as well as commercial building construction and residential housing construction loans. The Corporation’s real estate
construction loans are generally secured with the subject property. Terms of construction loans depend on the specifics of the project, such as estimated absorption rates, estimated time to complete, etc.
In underwriting real estate construction loans, the Corporation performs a thorough analysis of the financial condition of the borrower, the borrower’s credit history, and the reliability and predictability of the cash flow generated by the project using feasibility studies, market data, etc. Appraisals on properties securing real estate construction loans originated by the Corporation are performed by independent appraisers.
Real estate construction loans generally present a higher level of risk than other types of loans due primarily to the effect of general economic conditions and the uncertainties surrounding total construction costs.
Consumer — The Corporation offers a variety of secured and unsecured consumer loans, including those for vehicles and mobile homes and loans secured by savings deposits. These loans originate primarily within the Corporation’s Market Area or with customers primarily from the Market Area.
Consumer loan terms vary according to the type and value of collateral and the creditworthiness of the borrower. In underwriting consumer loans, a thorough analysis of the borrower’s financial ability to repay the loan as agreed is performed. The ability to repay is determined by the borrower’s employment history, current financial condition, and credit background.
Consumer loans may entail greater credit risk than residential mortgage loans or home equity lines of credit, particularly in the case of consumer loans which are unsecured or are secured by rapidly depreciable assets such as automobiles or recreational equipment. In such cases, any repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment of the outstanding loan balance as a result of the greater likelihood of damage, loss or depreciation. In addition, consumer loan collections are dependent on the borrower’s continuing financial stability, and thus are more likely to be affected by adverse personal circumstances. Furthermore, the application of various federal and state laws, including bankruptcy and insolvency laws, may limit the amount which can be recovered on such loans.
The adoption of Topic 326 resulted in a Day 1 adjustment of $3.3 million, including an increase to the ACL of $1.6 million and a $1.6 million reserve on unfunded loan commitments recorded in the liabilities section on the Consolidated Statements of Condition on January 1, 2023. As of January 1, 2023, the Corporation recorded a cumulative effect adjustment of $2.4 million to decrease retained earnings related to the adoption of Topic 326. Upon CECL adoption, the Corporation elected to implement the regulatory agencies’ capital transition relief over the permissible three-year period. The following table illustrates the impact of Topic 326:
January 1, 2023
(In thousands)Pre Topic 326As Reported Under Topic 326Impact of Topic 326 Adoption
Allowance for Credit Losses on Loans:
   Commercial and industrial$(2,848)$(2,086)$762 
   Commercial real estate(10,016)(11,122)(1,106)
   Real estate construction(1,000)(2,347)(1,347)
   Residential mortgage(3,029)(3,326)(297)
   Home equity lines of credit(347)(364)(17)
   Consumer(376)(234)142 
Unallocated(245)— 245 
Allowance for credit losses on loans$(17,861)$(19,479)$(1,618)
Assets:
Total Loans, net of allowance for credit losses$1,520,749 $1,519,131 $1,618 
   Net deferred tax asset17,718 18,452 734 
Liabilities:
   Allowance for unfunded commitments92 1,735 1,643 
Equity:
   Retained earnings245,042 242,674 2,368 
The ACL represents an amount which, in management’s judgment, is adequate to absorb expected losses on outstanding loans at the balance sheet date based on the evaluation of the size and current risk characteristics of the loan portfolio, past events,
current conditions, reasonable and supportable forecasts of future economic conditions and prepayment experience. The ACL is measured and recorded upon the initial recognition of a financial asset. The ACL is reduced by charge-offs, net of recoveries of previous losses, and is increased or decreased by a provision for credit losses, which is recorded as a current period operating expense.

The adoption of CECL did not result in a significant change to any other credit risk management and monitoring processes, including identification of past due or delinquent borrowers, nonaccrual practices or charge-off policies.
The Corporation’s methodology for estimating the ACL includes:
Segmentation — The Corporation’s loan portfolio is segmented by loan types that have similar risk characteristics and types of collateral and behave similarly during economic cycles.
Specific Analysis — A specific reserve analysis is applied to certain individually evaluated loans. These loans are evaluated quarterly generally based on collateral value, observable market value or the present value of expected future cash flows. A specific reserve is established if the fair value is less than the loan balance. A charge-off is recognized when the loss is quantifiable.
Quantitative Analysis — The Corporation elected to use DCF and chose unemployment rate as the driving factor of their economic forecasts. In regards to unemployment rates, the Corporation elected to forecast economic factors over the period of the next four quarters. The Corporation chose not to extend beyond four quarters given the inherent risks associated with forecasting. The Corporation utilizes relevant third-party forecasts as a basis and support for its own forecast. These forecasts are assumed to revert to the long-term average and utilized in the model to estimate the PD and LGD through regression. The Corporation elected a reversion period of four quarters. The Corporation deemed four quarters to be a reasonable time period to ensure it did not include irrelevant information, but also not too short to introduce unnecessary volatility. Model assumptions include, but are not limited to, the discount rate, prepayment speeds, funding rates, PD, LGD and curtailments. The product of the PD and the LGD is the estimated loss rate, which varies over time. The estimated loss rate is applied within the appropriate periods in the cash flow model to determine the net present value. Net present value is also impacted by assumptions related to the duration between default and recovery. The reserve is based on the difference between the summation of the principal balances taking amortized costs into consideration and the summation of the net present values.
Qualitative Analysis — Based on management’s review and analysis of internal, external and model risks, management may adjust the model output. Management reviews the peaks and troughs of the model’s calibration, considering economic forecasts to develop guardrails that serve as the basis for determining the reasonableness of the model’s output and makes adjustments as necessary. This process challenges unexpected variability resulting from outputs beyond the model’s calibration that appear to be unreasonable. Additionally, management may adjust the economic forecast if it is incompatible with known market conditions based on management’s experience and perspective.
Credit Quality Indicators
The Corporation’s portfolio risk rating analysis estimates the capability of the borrower to repay the contractual obligations of the loan agreements as scheduled or at all. The Corporation’s internal credit risk rating system is based on debt service coverage, collateral values and other subjective factors. Non-commercial-purpose loans are defaulted to a performing classification until a loan migrates to past due status.
Special Mention — Considered “Other Assets Especially Mentioned” these loans are currently protected, but are potentially weak. Loans in this rating category constitute an undue and unwarranted credit risk, but not to the point of justifying a classification of substandard. The credit risk may be relatively minor, yet constitutes an unwarranted risk in light of the circumstances surrounding a specific loan.
Substandard — Loans in this category are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual loans classified as substandard.
Doubtful — Loans in this category have all the weaknesses inherent in one classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The possibility of loss is extremely high, but because of certain important and reasonable specific pending factors which may work to strengthen the credit, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and refinancing plans.
Loss — Loans classified as a loss are considered uncollectible and are charged to the ACL.
Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass-rated loans.
In addition, federal and state regulatory agencies, as an integral part of their examination process, periodically review the Corporation’s ACL and may require the Corporation to recognize additions to the allowance based on their judgments about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio and economic conditions, management believes the current level of the allowance for credit losses is adequate.
Concentration of Credit Risk
Most of the Corporation’s lending activities are with customers located within southcentral Pennsylvania and northern Maryland. The types of lending in which the Corporation engages are outlined above. The Corporation’s exposure to credit risk is significantly affected by changes in the economy in those areas. Although the Company maintains a diversified loan portfolio, a significant portion of its customers’ ability to honor their contracts is dependent upon economic sectors for commercial real estate, including mixed use properties, office complexes, hospitality, multi-family and residential complexes and agriculture. Management evaluates each clients' creditworthiness on an individual basis.
The types of securities in which the Corporation invests are discussed in “Note 3 — Investment Securities”.
Collateral-Dependent Loans
A loan is considered to be collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For all classes of loans deemed collateral-dependent, the Corporation elected the practical expedient to estimate expected credit losses based on the collateral’s fair value less cost to sell. In most cases, the Corporation records a partial charge-off to reduce the collateral-dependent loan’s carrying value to the fair value of the collateral less cost to sell. Substantially all of the collateral supporting collateral-dependent loans consists of various types of real estate, including residential properties, commercial properties, such as retail centers, office buildings, and lodging, agriculture land, and vacant land. Changes in the fair value of the collateral for individually evaluated loans are reported as provision for credit losses or a reversal of provision for credit losses in the period of change.
Acquired Loans
Under CECL acquired loans or pools of loans that have experienced more-than-insignificant credit deterioration are deemed to be PCD loans, and are grossed-up on day 1 by the initial credit estimate through the ACL as opposed to a reduction in the loan’s amortized cost. The credit mark on acquired loans deemed not to be PCD loans are reflected as a reduction in the loan’s amortized cost, with an ACL and corresponding provision for credit losses recorded in the first reporting period after acquisition through current period earnings, while the net loan mark will amortize through interest income over the life of such loans. At acquisition ACNB will consider several factors as indicators that an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors may include, but are not limited to, loans 30 days or more past due, loans with an internal risk grade of below average or lower, or loans classified as non-accrual. Upon the adoption of CECL acquired loans from prior acquisitions that met the guidelines under ASC 310-30 (formerly known as “purchased credit-impaired”) were reclassified as PCD loans. The accretable portion of the loan mark as of adoption date continues to accrete into interest income. However, the non-accretable portion of the loan mark was added to the ACL upon adoption, and any reversals of such mark will flow through the ACL in future periods.
Transfers of Financial Assets
Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Corporation, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Corporation does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
Premises and Equipment
Land is carried at cost. Buildings, furniture, fixtures, equipment and leasehold improvements are carried at cost, less accumulated depreciation. Depreciation is computed principally by the straight-line method over the assets’ estimated useful lives. Normally, a building’s useful life is 40 years, except for building remodels and additions, which are depreciated over fifteen years. Bank equipment, including furniture and fixtures, is normally depreciated over three - fifteen years depending upon the nature of the purchase. Maintenance and normal repairs are charged to expense when incurred while major additions
and improvements are capitalized. Gains and losses on disposals are reflected in current operations. Amortization of leasehold improvements is computed by straight line over the shorter of the assets’ useful life or the related lease term.
Leases
All leases with an initial term greater than 12 months recognize: (1) a ROU asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term; and (2) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, each measured on a discounted basis.
As a lessee, the majority of the operating lease portfolio consists of real estate leases for the Bank’s community banking offices. The operating leases have remaining lease terms of less than one year to less than twelve years, some of which include options to renew at varying durations. See “Note 7 - Leases” for additional information.
Restricted Investment in Bank Stocks
Restricted investment in bank stocks, which represents required investments in the common stock of correspondent banks, is carried at cost as of December 31, 2024 and 2023, and consists of common stock in the Atlantic Community Bankers Bank, Community Bankers Bank and Federal Home Loan Bank.
Management believes no impairment charge was necessary related to the restricted investment in bank stocks during 2024, 2023 or 2022.
Bank-Owned Life Insurance
The Corporation’s banking subsidiary maintains nonqualified compensation plans for selected senior officers. To fund the benefits under these plans, the Bank is the owner of single premium life insurance policies on participants in the nonqualified retirement plans. Investment in bank-owned life insurance policies was used to finance the nonqualified compensation plans and provide tax-exempt income to the Corporation.
ASC Topic 715, Compensation—Retirement Benefits, requires a liability to be recorded during the service period when a split-dollar life insurance agreement continues after participants’ employment or retirement. The required accrued liability is based on either the post-employment benefit cost for continuing life insurance or based on the future death benefit depending on the contractual terms of the underlying agreement. The Corporation’s liability is based on the post-employment benefit cost for continuing life insurance. The Corporation incurred approximately $165 thousand, $214 thousand and $81 thousand of expense in 2024, 2023 and 2022, respectively, related to these benefits.
Investments in Low-Income Housing Partnerships
The Corporation’s investments in low-income housing partnerships are accounted for using the “equity method” prescribed by ASC Topic 323, Investments—Equity Method. In accordance with ASC Topic 740, Income Taxes, tax credits are recognized as they become available. Any residual loss is amortized as the tax credits are received.
Goodwill and Intangible Assets
The Corporation accounts for its acquisitions using the acquisition accounting method required by ASC Topic 805, Business Combinations. Acquisition accounting requires the total purchase price to be allocated to the estimated fair values of assets and liabilities acquired, including certain intangible assets that must be recognized. Generally, this results in a residual amount in excess of the net fair values, which is recorded as goodwill.
Goodwill represents the excess of the cost of an acquisition over the fair value of the net assets acquired. ASC Topic 350, Intangibles—Goodwill and Other, requires that goodwill is not amortized to expense, but rather that it be assessed or tested for impairment at least annually. If certain events occur which might indicate goodwill has been impaired, the goodwill is tested for impairment when such events occur. Impairment write-downs are charged to results of operations in the period in which the impairment is determined. The Corporation did not identify any impairment on the Bank’s or ACNB Insurance Services’ outstanding goodwill from its most recent goodwill impairment analysis which was completed as of November 30, 2024 using the qualitative approach. If certain events occur which indicate goodwill might be impaired between annual assessments, the goodwill would be evaluated for impairment when such events occur.
Other intangible assets represent purchased assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights. These assets that have finite lives, such as core deposit intangibles, customer lists and non-compete covenants, are amortized over their estimated useful lives and subject to periodic impairment testing. Core deposit intangibles are primarily amortized over ten years using accelerated methods. Customer lists are amortized using the straight line method over their estimated useful lives which range from eight to fifteen years. Non-compete covenants are amortized
using the straight line method over the term of the agreement.
The fair value of customer lists intangibles was based upon an income approach which included estimated financial projections developed by the Corporation and included other fair value assumptions for attrition, present value discount rates using market participant assumptions. The fair value of the non-compete covenants intangible was based upon an income approach which compared the present value impact of various non-compete scenarios and other fair value assumptions including present value discount rates using market participant assumptions.
Foreclosed Assets
Assets acquired through, or in lieu of, loan foreclosure are held for sale and are initially recorded at fair value, less costs to sell at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, valuations are periodically performed by management and the assets are adjusted to the fair value, less costs to sell as necessary. Revenue and expenses from operations and changes in the valuation allowance are included in net expenses from foreclosed assets. Foreclosed assets held for resale were $438 thousand and $467 thousand at December 31, 2024 and 2023, respectively.
Income Taxes
The Corporation accounts for income taxes in accordance with income tax accounting guidance ASC Topic 740, Income Taxes.
Current income tax accounting guidance results in two components of income tax expense, current and deferred. Current income tax expense reflects taxes to be paid or refunded for the current period by applying the provisions of the enacted tax law to the taxable income or excess of deductions over revenues. The Corporation determines deferred income taxes using the liability (or balance sheet) method. Under this method, the net deferred tax asset or liability is based on the tax effects of the differences between the book and tax bases of assets and liabilities, and enacted changes in tax rates and laws are recognized in the period in which they occur.
Deferred income tax expense results from changes in deferred tax assets and liabilities between periods. Deferred tax assets are reduced by a valuation allowance if, based on the weight of the evidence available, it is more likely than not that some portion or all of a deferred tax asset will not be realized.
The Corporation accounts for uncertain tax positions if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more-likely-than-not means a likelihood of more than 50%; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more-likely-than-not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information. The determination of whether or not a tax position has met the more-likely-than-not recognition threshold considers the facts, circumstances, and information available at the reporting date and is subject to management’s judgment.
The Corporation recognizes interest and penalties on income taxes, if any, as a component of income tax expense.
Defined Benefit Pension Plan
Net periodic pension costs are funded based on the requirements of federal laws and regulations. The determination of net periodic pension costs is based on assumptions about future events that will affect the amount and timing of required benefit payments under the plan. These assumptions include demographic assumptions such as retirement age and mortality, a discount rate used to determine the current benefit obligation, form of payment election and a long-term expected rate of return on plan assets. Net periodic pension expense includes interest cost, based on the assumed discount rate, an expected return on plan assets, amortization of prior service cost or credit and amortization of net actuarial gains or losses. Pension expense is the net of service and interest cost, return on plan assets and amortization of gains and losses not immediately recognized. For additional details, see “Note 12 — Retirement Plans”.
Stock-based Compensation
On May 1, 2018, stockholders approved and ratified the ACNB Corporation 2018 Omnibus Stock Incentive Plan, effective as of March 20, 2018, in which awards shall not exceed, in the aggregate, 400,000 shares of common stock, plus any shares that are authorized, but not issued, under the ACNB Corporation 2009 Restricted Stock Plan. The ACNB Corporation 2009 Restricted Stock Plan expired by its own terms after 10 years on February 24, 2019. No further shares may be issued under this plan. The remaining 174,055 shares were transferred to the ACNB Corporation 2018 Omnibus Stock Incentive Plan.
Stock-based compensation awards granted, comprised of time-based restricted stock awards, are valued at fair value on the date of grant and compensation expense is recognized on a straight-line basis over the requisite service period of each award. The Company recognizes forfeitures as they occur.
Advertising Costs
Costs of advertising, which are included in other expenses, are expensed when incurred.
Off-Balance Sheet Credit-Related Financial Instruments
In the ordinary course of business, the Corporation has entered into commitments to extend credit, including commitments under commercial lines of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.
Loss Contingencies
Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are such matters that will have a material effect on the financial statements.
Restrictions on Cash
Cash on hand or on deposit with the Federal Reserve Bank was required to meet regulatory reserve and clearing requirements.
Dividend Restriction
Pursuant to the Pennsylvania Banking Code of 1965, as amended, and the regulations of the FDIC, the Bank is required to maintain certain capital levels and is restricted in the dividends that may be paid by the bank to the holding company. In addition, pursuant to the Pennsylvania Business Corporation Law, as amended, and the rules and regulations of the Board of Governors of the Federal Reserve System, the holding company is subject to restrictions on dividends that the holding company may pay to stockholders.
Fair Value of Financial Instruments
Fair values of financial instruments are estimated using relevant market information and other assumptions. Fair value estimates involve uncertainties and matters of significant judgement regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect these estimates. See “Note 11 — Fair Value Measurements” for additional information.
Revenue Recognition
ACNB generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is little judgment involved that significantly affects the determination of the amount and timing of revenue from contracts with customers. The sources of revenue for ACNB are interest income from loans and investments and noninterest income. Noninterest income is earned from various banking and financial services that ACNB offers through its subsidiaries.
Insurance Commissions — Commission income is earned based on customers transactions. The commission income is recognized when the transaction is complete.
Wealth Management — The Bank provides wealth management services under the umbrella of ACNB Wealth Management which includes trust and investment services and wealth advisory services. The trust and investment group provides a wide range of financial services, including trust administration and estate settlement services, and investment management for individuals, businesses and non-profit entities. Other services include, but are not limited to, those related to testamentary trusts, life insurance trusts, charitable remainder trusts, guardianships, power of attorney, custodial accounts and investment management and advisory accounts. In addition, ACNB Wealth Management offers retail brokerage-services through a networking agreement with a third-party provider. ACNB Wealth Management clients are located primarily within the Corporation’s Market Area.
The majority of trust and investment services revenue is earned and collected monthly, with the amount determined based on the market value of assets in each account multiplied by a fee schedule for that account. Each account has one integrated set of performance obligations so no allocation is required. The performance obligation is met by performing the identified fiduciary service, investment management service, or custodial service. Successful performance is confirmed by ongoing internal and regulatory control, measurement is by valuing the account assets at month-end to which a fee schedule is applied. Trust and
investment services fees are contractually agreed upon with each client in instances where the client has control over the assets, and fee levels vary based mainly on the size of assets under management. Fees for trust administration or estate settlement are assessed based on the permissions granted within each governing document and in accordance with state law; estate settlement fees are generally assessed at the conclusion of estate administration.
The wealth advisory revenue is predominantly realized through commissions generated from client transactions. Commission income is recognized when the transaction is completed, and may be paid as a single upfront payment, or as recurring income in the form of trailing commissions. A small portion of the overall revenue is derived from fee-based advisory relationships; contractually agreed upon fees are assessed based on the market value of assets in the account. Net revenue based on the terms of the networking agreement are received on a monthly basis.
Service charges on deposit accounts — Deposits are included as liabilities in the Statement of Condition. Service charges on deposit accounts include: overdraft fees; ATM fees charged for withdrawals by deposit customers from other financial institutions’ ATMs; and a variety of other monthly or transactional fees for services provided to retail and business customers, mainly associated with checking accounts. All deposit liabilities are considered to have one-day terms and therefore related fees are recognized in income at the time when the services are provided to the customers.
ATM debit card charges — The Bank issues debit cards to consumer and business customers with checking, savings or money market deposit accounts. Debit card and ATM transactions are processed via electronic systems that involve several parties. The Corporation’s debit card and ATM transaction processing is executed via contractual arrangements with payment processing networks, a processor and a settlement bank. As described above, all deposit liabilities are considered to have one-day terms and therefore interchange revenue from customers’ use of their debit cards to initiate transactions are recognized in income at the time when the services are provided and related fees received in the Corporation’s deposit account with the settlement bank.
Other — Consists of safe deposit rental income, money order fees, check cashing and cashiers’ check fees, wire transfer fees, letter of credit fees, check order income, and other miscellaneous fees. These fees are largely transaction-based; therefore, the Corporation’s performance obligation is satisfied and the resultant revenue is recognized at the point in time the service is rendered. Payments for transaction-based fees are generally received immediately or in the following month by a direct charge to a customer’s account.
Segment Reporting
The Corporation evaluates and monitors the revenue streams of its various products and services and manages operations and financial performance on a consolidated basis. The Bank offers banking and wealth management services, including trust and retail brokerage. ACNB Insurance Services offers a broad range of property and casualty, life and health insurance to both commercial and consumer clients. Segment determination considers organizational structure and is consistent with the presentation of financial information to the CODM to evaluate segment performance, develop strategy, and allocate resources. Management has determined that the Corporation has two reportable segments consisting of Banking and Insurance. The President and CEO of ACNB Corporation is the CODM for both the Bank and the Corporation’s wholly-owned insurance subsidiary. See “Note 19 — Segment and Related Information” for segment-specific information and reconciliation.
Recently Adopted Accounting Standards
In December 2022, the FASB issued ASU 2022-06, “Deferral of the Sunset Date of Reference Rate Reform (Topic 848)”. This ASU extends the sunset date of ASC Topic 848 (Reference Rate Reform) to December 31, 2024, in response to the United Kingdom’s Financial Conduct Authority (FCA) extension of the intended cessation date of LIBOR in the United States. The standard became effective for the Corporation upon issuance and its adoption did not have a material impact on its Consolidated Financial Statements.
In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280)”. The amendments in this ASU are expected to improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more decision-useful financial analyses. The amendments of ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-07 should be applied retrospectively to all periods presented on the financial statements. The Corporation adopted the amendments of ASU 2023-07 related to annual disclosure requirements effective January 1, 2024. Adoption of this standard did not have a material impact on the Corporation’s Consolidated Financial Statements.
Accounting Standards Pending Adoption
In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740)”. This ASU is intended to improve the disclosures for income taxes to address requests from investors, lenders, creditors and other allocators of capital that use the financial statements to make capital allocation decisions. The amendments in ASU 2023-09 will require consistent categories and greater disaggregation of information in the rate reconciliation disclosure as well as disclosure of income taxes paid disaggregated by jurisdiction. The amendments of ASU 2023-09 are effective for annual periods beginning after December 15, 2024, and early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The Corporation intends to adopt the amendments of ASU 2023-09 effective January 1, 2025, and will include the required disclosures in its Annual Report on Form 10-K for the year ending December 31, 2025. The Corporation is currently evaluating the impact of this standard, and believes that its adoption will not have a material impact on the Corporation’s Consolidated Financial Statements.
In November 2024, the FASB issued ASU 2024-03, “Disaggregation of Income Statement Expenses (Subtopic 220-40)”. This ASU is intended to improve the decision usefulness of expense information on public business entities’ income statements through the disaggregation of relevant expense captions in the notes to the financial statements. The amendments of ASU 2024-03 are effective for annual periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, and early adoption is permitted. The Corporation is currently evaluating the impact of this standard, and believes that its adoption will not have a material impact on the Corporation’s Consolidated Financial Statements.
v3.25.0.1
RESTRICTIONS ON CASH AND DUE FROM BANKS
 12 Months Ended
Dec. 31, 2024
Restricted Cash and Investments [Abstract]  
RESTRICTIONS ON CASH AND DUE FROM BANKS RESTRICTIONS ON CASH AND CASH EQUIVALENTS
The Corporation is required to maintain cash balances at certain correspondent banks in exchange for services obtained through those banks. At December 31, 2024 and 2023, these balances were included in interest-bearing deposits with banks.
v3.25.0.1
INVESTMENT SECURITIES
 12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
INVESTMENT SECURITIES INVESTMENT SECURITIES
Fair value of equity securities with readily determinable fair values at December 31 are as follows:
(In thousands)Fair Value at January 1PurchasesSales/reclassification(Losses)/GainsLosses on sales of securitiesFair Value at December 31
2024
CRA Mutual Fund$928 $— $— $(9)$— $919 
2023
CRA Mutual Fund$915 $— $— $13 $— $928 
Canapi Ventures SBIC Fund206 — 206 — — — 
Stock in other banks598 — 592 5 (11)— 
Total$1,719 $— $798 $18 $(11)$928 
2022
CRA Mutual Fund$1,036 $— $— $(121)$— $915 
Canapi Ventures SBIC Fund— 206 — — — 206 
Stock in other banks1,573 — 811 (177)13 598 
Total$2,609 $206 $811 $(298)$13 $1,719 
Amortized cost and fair value of investment securities were as follows:
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
December 31, 2024    
Available for Sale    
U.S. Government and agencies$159,799 $— $16,606 $143,193 
Collateralized mortgage obligations39,540 — 3,886 35,654 
Residential mortgage-backed securities159,349 2 20,811 138,540 
Commercial mortgage-backed securities65,350 — 4,565 60,785 
Corporate bonds17,600 — 1,797 15,803 
Total$441,638 $2 $47,665 $393,975 
Held to Maturity
State and municipal$62,838 $— $7,586 $55,252 
Residential mortgage-backed securities1,740 — 68 1,672 
Total$64,578 $— $7,654 $56,924 
December 31, 2023
Available for Sale
U.S. Government and agencies$176,458 $— $19,663 $156,795 
Collateralized mortgage obligations45,189 — 4,105 41,084 
Residential mortgage-backed securities178,441 19 19,630 158,830 
Commercial mortgage-backed securities69,498 344 4,552 65,290 
Corporate bonds32,326 202 2,834 29,694 
Total$501,912 $565 $50,784 $451,693 
Held to Maturity    
State and municipal$62,133 $— $5,419 $56,714 
Residential mortgage-backed securities2,467 — 124 2,343 
Total$64,600 $— $5,543 $59,057 
The following table shows the Corporation’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2024 and 2023:
 Less than 12 Months12 Months or MoreTotal
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
December 31, 2024      
Available for Sale      
U.S. Government and agencies$— $— $143,193 $16,606 $143,193 $16,606 
Collateralized mortgage obligations— — 35,654 3,886 35,654 3,886 
Residential mortgage-backed securities2,692 26 135,626 20,785 138,318 20,811 
Commercial mortgage-backed securities31,860 73 28,925 4,492 60,785 4,565 
Corporate bonds— — 15,803 1,797 15,803 1,797 
Total$34,552 $99 $359,201 $47,566 $393,753 $47,665 
Held to Maturity
State and municipal$— $— $55,252 $7,586 $55,252 $7,586 
Residential mortgage-backed securities— — 1,672 68 1,672 68 
Total$— $— $56,924 $7,654 $56,924 $7,654 
December 31, 2023      
Available for Sale
U.S. Government and agencies$— $— $156,795 $19,663 $156,795 $19,663 
Collateralized mortgage obligations— — 41,085 4,104 41,085 4,104 
Residential mortgage-backed securities— — 156,295 19,630 156,295 19,630 
Commercial mortgage-backed securities— — 33,063 4,553 33,063 4,553 
Corporate bonds— — 15,279 2,834 15,279 2,834 
Total$— $— $402,517 $50,784 $402,517 $50,784 
Held to Maturity
State and municipal$— $— $56,714 $5,419 $56,714 $5,419 
Residential mortgage-backed securities— — 2,343 124 2,343 124 
Total$— $— $59,057 $5,543 $59,057 $5,543 
All mortgage-backed securities, and those of a similar asset class, are government-sponsored enterprise pass-through instruments issued by the Federal National Mortgage Association or Federal Home Loan Mortgage Corporation or they are issued by the Government National Mortgage Association which is backed by the U.S. government which guarantees the timely payment of principal on these investments.
The Company evaluates AFS debt securities for impairment in unrealized loss positions at each measurement date to determine whether the decline in the fair value below the amortized cost basis is due to credit-related factors or noncredit-related factors. There was no impairment on AFS debt securities as of December 31, 2024 and 2023. The Company evaluates HTM debt securities for expected credit losses at each measurement date to determine if an ACL is required. The Corporation did not have an ACL for HTM investment securities as of December 31, 2024 and 2023. In estimating credit events, management considers whether it intends to sell the security or if it is more likely than not that it will be required to sell the security before anticipated recovery or if it does not expect to recover the entire amortized cost basis.
Amortized cost and fair value at December 31, 2024, by contractual maturity, where applicable, are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay with or without penalties.
 Available for SaleHeld to Maturity
(In thousands)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
1 year or less$18,009 $17,592 $— $— 
Over 1 year through 5 years102,083 93,188 4,188 3,735 
Over 5 years through 10 years55,307 46,670 27,266 25,927 
Over 10 years2,000 1,546 31,384 25,590 
Mortgage-backed securities264,239 234,979 1,740 1,672 
$441,638 $393,975 $64,578 $56,924 
The proceeds from sales and calls of securities and the associated gains and losses are listed below:
Years Ended December 31,
(In thousands)202420232022
Proceeds from sales$14,336 $125,241 $4,994 
Proceeds from calls1,984 — — 
Gross gains87 230 14 
Gross losses18 5,470 248 
At December 31, 2024 and 2023, securities with a carrying value of $157.3 million and $233.7 million, respectively, were pledged as collateral as required by law on public and trust deposits, repurchase agreements, and for other purposes.
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES
 12 Months Ended
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]  
LOANS AND ALLOWANCE FOR CREDIT LOSSES LOANS AND ALLOWANCE FOR CREDIT LOSSES
 
The following table presents the composition of the loan portfolio:
(In thousands)December 31, 2024December 31, 2023
Commercial real estate$969,514 $898,709 
Residential mortgage401,950 394,189 
Commercial and industrial140,906 152,344 
Home equity lines of credit85,685 90,163 
Real estate construction76,773 84,341 
Consumer9,318 9,954 
Gross loans1,684,146 1,629,700 
Unearned income(1,236)(1,712)
Total loans, net of unearned income$1,682,910 $1,627,988 
The Bank has granted loans to certain of its executive officers, directors and their related interests. These loans were made on substantially the same basis, including interest rates and collateral as those prevailing for comparable transactions with other borrowers at the same time. None of these loans were past due, in nonaccrual status, or restructured at December 31, 2024. The following table is a summary of the activity for these related-party loans:
(In thousands)2024
Balance at January 1$5,307 
Repayments548 
Balance at December 31$4,759 
One of the factors used to monitor the performance and credit quality of the loan portfolio is to analyze the age of the loans receivable as determined by the length of time a recorded payment is past due. The following tables present the classes of the loan portfolio summarized by the past due status:
(In thousands)30–59 Days Past Due60–89 Days
Past Due		≥ 90 Days
Past Due		Total Past
Due		CurrentTotal Loans
Receivable		Loans
Receivable
≥ 90 Days
and
Accruing
December 31, 2024
Commercial real estate$763 $527 $314 $1,604 $967,910 $969,514 $— 
Residential mortgage953 987 850 2,790 399,160 401,950 850 
Commercial and industrial437 24 155 616 140,290 140,906 — 
Home equity lines of credit161 — 91 252 85,433 85,685 91 
Real estate construction15 11 — 26 76,747 76,773 — 
Consumer47 18 — 65 9,253 9,318 — 
Total Loans$2,376 $1,567 $1,410 $5,353 $1,678,793 $1,684,146 $941 
December 31, 2023
Commercial real estate$150 $347 $— $497 $898,212 $898,709 $— 
Residential mortgage1,293 388 849 2,530 391,659 394,189 505 
Commercial and industrial50 — 159 209 152,135 152,344 — 
Home equity lines of credit414 — 654 1,068 89,095 90,163 654 
Real estate construction12 — — 12 84,329 84,341 — 
Consumer8 — 3 11 9,943 9,954 3 
Total Loans$1,927 $735 $1,665 $4,327 $1,625,373 $1,629,700 $1,162 
Nonaccrual and Nonperforming Loans
Loans individually evaluated consist of nonaccrual loans, presented in the following table: 
December 31, 2024December 31, 2023
(In thousands)With a Related AllowanceWithout a Related AllowanceTotalWith a Related AllowanceWithout a Related AllowanceTotal
Commercial real estate$314 $3,250 $3,564 $315 $1,164 $1,479 
Residential mortgage— — — — 343 343 
Commercial and industrial2,081 226 2,307 1,004 — 1,004 
Home equity lines of credit— — — — 185 185 
 Total$2,395 $3,476 $5,871 $1,319 $1,692 $3,011 
No additional funds are committed to be advanced in connection with individually evaluated loans. If interest on all nonaccrual loans had been accrued at original contract rates, interest income would have increased by $299 thousand in 2024, $302 thousand in 2023, and $410 thousand in 2022.
Total nonperforming loans at December 31 are as follows:
(In thousands)20242023
Nonaccrual loans$5,871 $3,011 
Greater than or equal to 90 days past due and accruing941 1,162 
Total nonperforming loans$6,812 $4,173 
Collateral-Dependent Loans
The amortized cost basis of individually evaluated loans by type of collateral as of December 31:
20242023
(In thousands)Business AssetsReal EstateBusiness AssetsReal Estate
Commercial real estate$— $3,564 $— $1,479 
Residential mortgage— — — 343 
Commercial and industrial2,307 — 1,004 — 
Home equity lines of credit— — — 185 
Total$2,307 $3,564 $1,004 $2,007 
Consumer residential mortgages and home equity lines of credit which are well secured by residential real estate properties and are in the process of collection are not considered nonaccrual, however, formal foreclosure proceedings are in process. These loans totaled $373 thousand and $1.3 million at December 31, 2024 and 2023, respectively, and are included in nonperforming loans if they are greater than or equal to 90 days past due.

Loan Modifications
The Corporation evaluates all loan restructurings according to the accounting guidance for loan modifications to determine if the restructuring results in a new loan or a continuation of the existing loan. Loan modifications to borrowers experiencing financial difficulty that result in a direct change in the timing or amount of contractual cash flows include situations where there is principal forgiveness, interest rate reductions, other-than-insignificant payment delays, term extensions, and combinations of the above. Therefore, the disclosures related to loan restructurings are only for modifications that directly affect cash flows.
The following tables present the amortized cost basis of loans that were both experiencing financial difficulty and modified during the years ended December 31, 2024 and 2023, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financing receivable is also presented below:
(In thousands)Combination Payment Deferral and Interest-Only PaymentsPercent of Class of Financing Receivable
2024
Commercial real estate$2,293 0.2 %
Commercial and industrial1,748 1.2 %
Total$4,041 
The loan modifications made during 2024 did not result in term extensions.
(In thousands)Term ExtensionPercent of Class of Financing ReceivableFinancial Effect
2023
Commercial and industrial$549 0.4 %
Added a weighted-average 4.95 years to the life of loans, which decreased the borrower’s monthly payment amounts.

The following presents the performance of loans modified in the previous twelve months as of December 31, 2024:
(In thousands)Current30-89 Days Past Due≥ 90 Days Past DueTotal Past Due
Commercial real estate$2,293 $— $— $— 
Commercial and industrial1,748 — — — 
Total$4,041 $— $— $— 
As of December 31, 2024, the Corporation had no commitments to lend any additional funds on modified loans. During the
years ended December 31, 2024 and 2023, there were no loans modified due to financial difficulty that defaulted subsequent to the modification. For purposes of this disclosure, a default occurs when, within 12 months of the original modification, either a full or partial charge-off occurs or the loan becomes 90 days or more past due.
Allowance for Credit Losses
The Corporation maintains an ACL at a level determined to be adequate to absorb expected credit losses associated with the Corporation’s financial instruments over the life of those instruments as of the balance sheet date. The ACL consists of loans evaluated collectively and individually for expected credit losses. The Corporation considers the performance of the loan portfolio and its impact on the ACL and does not assign internal risk ratings to smaller balance, homogeneous loans such as certain residential mortgage, home equity lines of credit, construction loans to individuals secured by residential real estate and consumer loans. For these loans, the Corporation evaluates credit quality based on the aging status of the loan and designates as performing and nonperforming.
The following summarizes designated internal risk categories by portfolio segment for loans assigned a risk rating and those evaluated based on the performance status:
December 31, 2024
Term Loans Amortized Cost Basis by Origination YearRevolving Loans Amortized Cost BasisTotal
(In thousands)20242023202220212020Prior
Internally Risk Rated:
Commercial real estate
Pass$120,989 $135,995 $164,167 $121,092 $55,408 $312,999 $17,276 $927,926 
Special Mention1,887 3,826 2,880 6,639 2,177 11,613 1,303 30,325 
Substandard— — 2,332 342 1,485 7,059 45 11,263 
Total Commercial real estate$122,876 $139,821 $169,379 $128,073 $59,070 $331,671 $18,624 $969,514 
Residential mortgage
Pass$27,887 $35,566 $23,095 $38,848 $13,446 $31,784 $466 $171,092 
Special Mention130 1,692 167 146 366 3,246 115 5,862 
Substandard— 237 188 — — 68 — 493 
Total Residential Mortgage$28,017 $37,495 $23,450 $38,994 $13,812 $35,098 $581 $177,447 
Commercial and industrial
Pass$10,000 $10,067 $19,584 $29,673 $13,162 $18,976 $30,015 $131,477 
Special Mention165 109 246 192 78 459 2,554 3,803 
Substandard— 526 468 335 2 979 3,316 5,626 
Total Commercial and industrial$10,165 $10,702 $20,298 $30,200 $13,242 $20,414 $35,885 $140,906 
Year-to-date gross charge-offs$— $38 $— $— $— $100 $— $138 
Home equity lines of credit
Pass$— $294 $92 $— $— $501 $5,729 $6,616 
Special Mention— — — — — — 696 696 
Substandard— — — — — 6 — 6 
Total Home equity lines of credit$— $294 $92 $— $— $507 $6,425 $7,318 
Real estate construction
Pass$21,227 $24,463 $7,719 $1,209 $298 $1,060 $6,086 $62,062 
Special Mention— 168 5,100 — — 667 45 5,980 
Substandard— — — — — 62 — 62 
Total Real estate construction$21,227 $24,631 $12,819 $1,209 $298 $1,789 $6,131 $68,104 
Performance Rated:
Residential mortgage
Performing$14,786 $41,275 $39,943 $13,523 $13,876 $100,601 $72 $224,076 
Nonperforming— — — — — 427 — 427 
Total Residential Mortgage$14,786 $41,275 $39,943 $13,523 $13,876 $101,028 $72 $224,503 
Home equity lines of credit
Performing$— $18 $34 $— $12 $2,591 $75,621 $78,276 
Nonperforming— — — — — — 91 91 
Total Home equity lines of credit$— $18 $34 $— $12 $2,591 $75,712 $78,367 
Real estate construction
Performing$6,486 $222 $725 $160 $188 $888 $— $8,669 
Total Real estate construction$6,486 $222 $725 $160 $188 $888 $— $8,669 
Consumer
Performing$2,000 $1,521 $1,694 $465 $276 $778 $2,584 $9,318 
Total Consumer$2,000 $1,521 $1,694 $465 $276 $778 $2,584 $9,318 
Year-to-date gross charge-offs$— $4 $9 $— $1 $7 $197 $218 
Total Portfolio loans
Pass$180,103 $206,385 $214,657 $190,822 $82,314 $365,320 $59,572 $1,299,173 
Special Mention2,182 5,795 8,393 6,977 2,621 15,985 4,713 46,666 
Substandard— 763 2,988 677 1,487 8,174 3,361 17,450 
Performing23,272 43,036 42,396 14,148 14,352 104,858 78,277 320,339 
Nonperforming— — — — — 427 91 518 
Total Portfolio loans$205,557 $255,979 $268,434 $212,624 $100,774 $494,764 $146,014 $1,684,146 
Year-to-date gross charge-offs$— $42 $9 $— $1 $107 $197 $356 
December 31, 2023
Term Loans Amortized Cost Basis by Origination YearRevolving Loans Amortized Cost Basis
(In thousands)20232022202120202019PriorTotal
Internally Risk Rated:
Commercial real estate
Pass$136,158 $152,767 $130,994 $60,918 $65,856 $287,026 $13,636 $847,355 
Special Mention1,927 6,385 5,920 1,904 8,222 16,244 1,994 42,596 
Substandard— — — 1,530 704 6,524 — 8,758 
Total Commercial real estate$138,085 $159,152 $136,914 $64,352 $74,782 $309,794 $15,630 $898,709 
Residential mortgage
Pass$39,146 $27,612 $41,031 $14,758 $10,492 $27,274 $402 $160,715 
Special Mention588 82 593 397 826 2,457 62 5,005 
Substandard— — — — — 218 — 218 
Total Residential Mortgage$39,734 $27,694 $41,624 $15,155 $11,318 $29,949 $464 $165,938 
Commercial and industrial
Pass$12,319 $24,259 $34,830 $15,614 $13,922 $17,780 $25,147 $143,871 
Special Mention128 303 290 529 140 459 2,014 3,863 
Substandard7 135 499 91 9 1,597 2,272 4,610 
Total Commercial and industrial$12,454 $24,697 $35,619 $16,234 $14,071 $19,836 $29,433 $152,344 
Year-to-date gross charge-offs$— $— $— $— $— $110 $— $110 
Home equity lines of credit
Pass$300 $99 $— $— $— $131 $5,235 $5,765 
Special Mention— — — — — — 727 727 
Substandard— — — — — 362 — 362 
Total Home equity lines of credit$300 $99 $— $— $— $493 $5,962 $6,854 
Real estate construction
Pass$19,766 $39,758 $3,953 $1,160 $— $2,604 $8,003 $75,244 
Special Mention— 465 — 92 — 725 — 1,282 
Substandard— — — — — 69 — 69 
Total Real estate construction$19,766 $40,223 $3,953 $1,252 $— $3,398 $8,003 $76,595 
Performance Rated:
Residential mortgage
Performing$33,884 $45,221 $14,878 $16,184 $9,059 $108,021 $156 $227,403 
Nonperforming— — — — — 848 — 848 
Total Residential Mortgage$33,884 $45,221 $14,878 $16,184 $9,059 $108,869 $156 $228,251 
Home equity lines of credit
Performing$23 $38 $— $13 $94 $4,742 $77,745 $82,655 
Nonperforming— — — — — 92 562 654 
Total Home equity lines of credit$23 $38 $— $13 $94 $4,834 $78,307 $83,309 
Real estate construction
Performing$5,571 $753 $175 $210 $170 $867 $— $7,746 
Total Real estate construction$5,571 $753 $175 $210 $170 $867 $— $7,746 
Consumer
Performing$2,351 $2,685 $778 $522 $271 $1,085 $2,259 $9,951 
Nonperforming— — — — — — 3 3 
Total Consumer$2,351 $2,685 $778 $522 $271 $1,085 $2,262 $9,954 
Year-to-date gross charge-offs$48 $83 $42 $55 $23 $78 $67 $396 
Total Portfolio loans
Pass$207,689 $244,495 $210,808 $92,450 $90,270 $334,815 $52,423 $1,232,950 
Special Mention2,643 7,235 6,803 2,922 9,188 19,885 4,797 53,473 
Substandard7 135 499 1,621 713 8,770 2,272 14,017 
Performing41,829 48,697 15,831 16,929 9,594 114,715 80,160 327,755 
Nonperforming— — — — — 940 565 1,505 
Total Portfolio loans$252,168 $300,562 $233,941 $113,922 $109,765 $479,125 $140,217 $1,629,700 
Year-to-date gross charge-offs$48 $83 $42 $55 $23 $188 $67 $506 
In 2024, the Corporation revised estimates utilized as input assumptions within the CECL model calculation. These estimates, which were based on more current information available during 2024, drive input assumptions which are used in the determination of the Corporation’s allowance for credit losses and the reserve for unfunded commitments. These updated estimates were the primary drivers for a $2.4 million and $326 thousand reversal of the provisions for credit losses and for unfunded commitments, respectively, for the year ended December 31, 2024.
The following table presents the ACL by loan portfolio segment for the years ended 2024, 2023 and 2022:
(In thousands)Commercial
Real Estate		Residential MortgageCommercial and IndustrialHome Equity Lines of CreditReal Estate ConstructionConsumerUnallocatedTotal
Beginning balance - January 1, 2024$12,010 $3,303 $2,048 $397 $2,070 $141 $— $19,969 
Charge-offs— — (138)— — (218)— (356)
Recoveries— — 26 — — 78 — 104 
(Reversal of) provisions(1,432)(327)(520)(103)(152)97 — (2,437)
Ending balance - December 31, 2024$10,578 $2,976 $1,416 $294 $1,918 $98 $— $17,280 
Beginning balance - January 1, 2023$10,016 $3,029 $2,848 $347 $1,000 $376 $245 $17,861 
Impact of CECL adoption1,106 297 (762)17 1,347 (142)(245)1,618 
Charge-offs— — (110)— — (396)— (506)
Recoveries— — 64 — — 72 — 136 
Provisions (reversal of)888 (23)8 33 (277)231 — 860 
Ending balance - December 31, 2023$12,010 $3,303 $2,048 $397 $2,070 $141 $— $19,969 
Beginning balance - January 1, 2022$10,716 $3,235 $3,176 $501 $616 $408 $381 $19,033 
Charge-offs(831)(3)(238)(33)— (181)— (1,286)
Recoveries— 5 58 22 — 29 — 114 
Provisions (reversal of)131 (208)(148)(143)384 120 (136)— 
Ending balance - December 31, 2022$10,016 $3,029 $2,848 $347 $1,000 $376 $245 $17,861 
The ACL may include qualitative adjustments intended to capture the impact of uncertainties not reflected in the quantitative models. In determining qualitative adjustments, management considers current conditions, reasonable and supportable forecasts of future economic conditions and prepayment experience.
v3.25.0.1
PREMISES AND EQUIPMENT
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
PREMISES AND EQUIPMENT PREMISES AND EQUIPMENT
Premises and equipment were as follows at December 31:
(In thousands)20242023
Land$5,418 $5,418 
Buildings and improvements33,390 33,249 
Furniture and equipment14,717 14,813 
Construction in process74 81 
Total premises and equipment53,599 53,561 
Accumulated depreciation(28,145)(27,278)
Premises and equipment, net$25,454 $26,283 
Depreciation expense, included in other noninterest expense on the Consolidated Statements of Income, was $1.8 million, $1.9 million and $2.3 million for the years ended December 31, 2024, 2023 and 2022, respectively.
v3.25.0.1
INVESTMENTS IN LOW-INCOME HOUSING PARTNERSHIPS
 12 Months Ended
Dec. 31, 2024
Real Estate Partnership Investment Subsidiaries, Net Income (Loss) before Tax [Abstract]  
INVESTMENTS IN LOW-INCOME HOUSING PARTNERSHIPS INVESTMENTS IN LOW-INCOME HOUSING PARTNERSHIPSACNB Corporation is a limited partner in two partnerships, whose purpose is to develop, manage and operate residential low-income properties. At December 31, 2024 and 2023, the carrying value of these investments was $877 thousand and $1.0 million, respectively.
v3.25.0.1
LEASES
 12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
LEASES LEASES
The Corporation enters into noncancellable lease arrangements primarily for some of its community banking offices. Certain lease arrangements contain clauses requiring increasing rental payments over the lease term, which are generally contractually
stipulated. Many of these lease arrangements provide the Corporation with the option to renew the lease arrangement after the initial lease term. These options are included in determining the lease term used to establish the right-of-use assets and lease liabilities, when it is reasonably certain the Corporation will exercise its renewal option. As most of the Corporation’s leases do not have a readily determinable implicit rate, the incremental borrowing rate is primarily used to determine the discount rate for purposes of measuring the right-of-use assets and lease liabilities. The Corporation’s lease arrangements do not contain any material residual value guarantees or material restrictive covenants.
The following ROU assets and lease liabilities are reported within the Consolidated Statements of Condition as follows:
(Dollars in thousands)December 31, 2024December 31, 2023
Operating Leases:
ROU assets$2,663 $2,615 
Lease liabilities2,764 2,615 
Weighted average remaining lease term5.7 years4.7 years
Weighted average discount rate2.63 %5.61 %
Supplemental cash flow information related to operating leases for the years ended December 31:
(In thousands)202420232022
Operating cash flows from operating leases$917 $924 $964 
As of December 31, 2024, the Corporation did not have any significant additional operating or finance leases that had not yet commenced.
The following summarizes the remaining scheduled future minimum lease payments for operating leases as of December 31, 2024:
Year(In thousands)
2025$712 
2026592 
2027469 
2028434 
2029294 
Thereafter488 
Total minimum lease payments2,989 
Less: amount representing interest 1
225 
Present value of net minimum lease payments$2,764 
__________________________________________________
1Amount necessary to reduce net minimum lease payments to present value calculated at the Corporation’s incremental borrowing rate.
v3.25.0.1
GOODWILL AND INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2024
Business Combinations [Abstract]  
GOODWILL AND INTANGIBLE ASSETS GOODWILL AND INTANGIBLE ASSETS
Goodwill totaled $44.2 million as of both December 31, 2024 and 2023. Goodwill, which has an indefinite useful life, is evaluated for impairment annually or more frequently if events and circumstances indicate that the asset might be impaired. The Corporation did not identify any goodwill impairment on the Bank or ACNB Insurance Services from its most recent testing performed as of November 30, 2024 using the qualitative approach. There were no impairment losses or accumulated impairment losses associated with goodwill as of December 31, 2024 and 2023.
The carrying value and accumulated amortization of the intangible assets and core deposit intangibles are as follows:
20242023
(In thousands)Gross
Carrying
Amount		Accumulated AmortizationGross
Carrying
Amount		Accumulated Amortization
ACNB Insurance Services - amortized intangible assets$16,331 $9,658 $16,331 $8,956 
Core deposit intangibles5,978 4,813 5,978 4,271 
$22,309 $14,471 $22,309 $13,227 
Amortization expense was $1.2 million, $1.4 million and $1.5 million for the years ended December 31, 2024, 2023 and 2022, respectively.
The following table shows the amortization expense of the intangible assets for future periods:
Year (In thousands)
2025$1,115 
20261,004 
2027857 
2028711 
2029646 
Thereafter3,505 
$7,838 
v3.25.0.1
DEPOSITS
 12 Months Ended
Dec. 31, 2024
Interest-Bearing Deposit Liabilities [Abstract]  
DEPOSITS DEPOSITS
Deposits were comprised of the following as of December 31:
(In thousands)20242023
Noninterest-bearing demand deposits$451,503 $500,332 
Interest-bearing demand deposits505,096 524,289 
Money market251,667 264,907 
Savings311,207 340,134 
Total demand and savings1,519,473 1,629,662 
Time273,028 232,151 
Total deposits$1,792,501 $1,861,813 
Time deposits include brokered deposits totaling $24.1 million at December 31, 2024 and none at December 31, 2023.
Scheduled maturities of time certificates of deposit at December 31, 2024, were as follows (in thousands):
Time Deposits
YearLess than $250,000$250,000 or more
2025$194,777 $40,592 
202624,917 778 
20277,585 — 
20281,940 — 
20292,436 — 
Thereafter3 — 
Total time deposits$231,658 $41,370 
v3.25.0.1
BORROWINGS
 12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
BORROWINGS BORROWINGS
Short-term borrowings and weighted-average interest rates at December 31 are as follows:
 20242023
(Dollars in thousands)AmountRateAmountRate
Securities sold under repurchase agreements$15,826 0.23 %$26,882 0.15 %
FHLB advance— — 30,000 5.64 
Total$15,826 0.23 %$56,882 3.05 %
Borrowings with original maturities of one year or less are classified as short-term. Securities sold under repurchase agreements are comprised of customer repurchase agreements, which are sweep accounts with next-day maturities utilized by larger commercial customers to earn interest on their funds. Securities are pledged to these customers in an amount at least equal to the outstanding balance. Under an agreement with the FHLB, the Bank has short-term borrowing capacity included within its maximum borrowing capacity. All FHLB advances are collateralized by a security agreement covering qualifying loans, which consist of 1-4 family mortgage loans and other real estate secured loans. In addition, all FHLB advances are secured by the FHLB capital stock owned by the Bank having a par value of $10.6 million at December 31, 2024. The Bank also has unsecured lines of credit that total $192.0 million with correspondent banks for overnight federal funds borrowings. There were no advances on these lines at December 31, 2024 and 2023. The Corporation maintains a $5.0 million unsecured line of credit with a correspondent bank and the Corporation guarantees a note related to a $1.5 million commercial line of credit with a correspondent bank for ACNB Insurance Services. There were no advances on these lines at December 31, 2024 and 2023.
A summary of long-term borrowings and their weighted-average contractual rates as of December 31 is as follows:
 20242023
(Dollars in thousands)AmountRateAmountRate
FHLB fixed-rate advances maturing:    
2026$80,000 4.71 %$80,000 4.71 %
202790,000 4.55 60,000 4.64 
202835,000 4.23 35,000 4.23 
202930,000 4.25 — — 
Trust preferred subordinated debt 1
5,333 6.25 5,292 7.28 
Subordinated debt15,000 4.00 15,000 4.00 
$255,333 4.52 %$195,292 4.62 %
________________________________________
1 Net of purchase accounting fair value mark.
The long-term FHLB advances are collateralized by the assets defined in the security agreement, which included loans totaling $1.33 billion, and FHLB capital stock described previously. Based on this collateral and ACNB’s holding of FHLB stock, ACNB is eligible to borrow up to $926.5 million, of which $690.4 million was available at December 31, 2024.
The trust preferred subordinated debt is comprised of debt securities issued by FCBI in December 2006 and assumed by ACNB Corporation through the acquisition of FCBI. FCBI completed the private placement of an aggregate of $6.0 million of trust preferred securities. The interest rate on the subordinated debentures is adjusted quarterly to 163 basis points over three-month CME Term SOFR plus applicable tenor spread adjustment. On December 16, 2024 the most recent interest rate reset date, the interest rate was adjusted to 6.25% for the period ending March 16, 2025. The trust preferred securities mature on December 15, 2036, and may be redeemed at par, at the Corporation’s option, on any interest payment date. The trust preferred subordinated debt is considered Tier 1 capital for the consolidated capital ratios.
On March 30, 2021, ACNB entered into Subordinated Note Purchase Agreements with certain Purchasers pursuant to which the Corporation sold and issued $15.0 million in aggregate principal amount of its 4.00% fixed-to-floating rate Subordinated Notes due March 31, 2031. The Subordinated Notes bear interest at a fixed rate of 4.00% per year, from and including March 30, 2021 to, but excluding, March 31, 2026 or earlier redemption date. From and including March 31, 2026 to, but excluding the maturity date or earlier redemption date, the interest rate will reset quarterly at a variable rate equal to the then current 90-day average SOFR plus 329 basis points. As provided in the Subordinated Notes, the interest rate on the Subordinated Notes during the applicable floating rate period may be determined based on a rate other than the 90-day average SOFR. The Subordinated Notes were issued by the Corporation to the Purchasers at a price equal to 100% of their face amount. The Subordinated Notes have a stated maturity of March 31, 2031, are redeemable by the Corporation at its option, in whole or in part, on or after March
30, 2026, and at any time upon the occurrences of certain events. The Subordinated Notes are considered Tier 2 capital for the consolidated capital ratios.
v3.25.0.1
FAIR VALUE MEASUREMENTS
 12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
Fair value is the exchange price that would be received to sell the asset or transfer the liability in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions.
Fair value measurement establishes a fair value hierarchy that prioritizes the inputs to valuation methods used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:
Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
Level 2 - Quoted prices for similar assets or liabilities in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability.
Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported with little or no market activity).
An asset or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
The following tables present assets measured at fair value and the basis of measurement used at December 31:
 2024
(In thousands)BasisLevel 1Level 2Level 3Total
Equity securities with readily determinable fair valuesRecurring$919 $— $— $919 
AFS Investment Securities:
U.S. Government and agencies — 143,193 — 143,193 
Collateralized mortgage obligations — 35,654 — 35,654 
Residential mortgage-backed securities— 138,540 — 138,540 
Commercial mortgage-backed securities— 60,785 — 60,785 
Corporate bonds — 15,803 — 15,803 
Total AFS Investment SecuritiesRecurring$— $393,975 $— $393,975 
Loans held for saleRecurring— 426 — 426 
Individually evaluated loansNon-recurring— — 1,690 1,690 
Foreclosed assets held for resaleNon-recurring— — 438 438 
 2023
(In thousands)BasisLevel 1Level 2Level 3Total
Equity securities with readily determinable fair valuesRecurring$928 $— $— $928 
AFS Investment Securities:
U.S. Government and agencies — 156,795 — 156,795 
Collateralized mortgage obligations — 41,084 — 41,084 
Residential mortgage-backed securities— 158,830 — 158,830 
Commercial mortgage-backed securities— 65,290 — 65,290 
Corporate bonds— 29,694 — 29,694 
Total AFS Investment SecuritiesRecurring$— $451,693 $— $451,693 
Loans held for saleRecurring— 280 — 280 
Individually evaluated loansNon-recurring— — 242 242 
Foreclosed assets held for resaleNon-recurring— — 467 467 
The valuation techniques used to measure fair value for the items in the preceding tables are as follows:
Equity securities - The fair value of equity securities with readily determinable fair values is recorded on the Consolidated Statement of Condition, with realized and unrealized gains and losses reported in noninterest income on the Consolidated Statements of Income.
Available for sale investment securities – Included in this asset category are debt securities. Level 2 investment securities are valued by a third-party pricing service. The pricing service uses pricing models that vary based on asset class and incorporate available market information, including quoted prices of investment securities with similar characteristics. Because many fixed income securities do not trade on a daily basis, pricing models use available information, as applicable, through processes such as benchmark yield curves, benchmarking of like securities, sector groupings and matrix pricing. Standard market inputs include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data, including market research publications. For certain security types, additional inputs may be used, or some of the standard market inputs may not be applicable.
•     U.S. Government and agencies – These debt securities are classified as Level 2. Fair values are determined by a third-party pricing service, as detailed above.
•     Collateralized mortgage obligations and Mortgage-backed securities – These debt securities are classified as Level 2. Fair values are determined by a third-party pricing service, as detailed above.
•     Corporate bonds – This category consists of subordinated and senior debt issued by financial institutions and are classified as Level 2 investments. The fair values for these corporate debt securities are determined by a third-party pricing service, as detailed above.
Loans held for sale – This category includes mortgage loans held for sale that are measured at fair value utilizing Level 2 measurements. Fair values as of December 31, 2024 and 2023, were measured as the price that secondary market investors were offering for loans with similar characteristics. See “Note 1 - Summary of Significant Accounting Policies” for details related to the Corporation’s election to measure assets and liabilities at fair value.
Individually evaluated loans – This category consists of loans that were individually evaluated for impairment and have a specific reserve. They are classified as Level 3 assets.
Foreclosed assets held for resale – This category consists of foreclosed assets that are held for resale and classified as Level 3 assets, for which the fair values were based on estimated selling prices less estimated selling costs for similar assets in active markets.
The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis for which the Corporation has utilized Level 3 inputs to determine fair value as of December 31:
(Dollars in thousands)Fair Value Estimate
Valuation Technique1
Unobservable Input2
RangeWeighted Average
2024
  Individually evaluated loans$1,690 Appraisal of collateralAppraisal adjustments
 16%-100%
47%
Foreclosed assets held for resale438 Appraisal of collateralAppraisal adjustments
17%-53%
50%
2023
Individually evaluated loans$242 Appraisal of collateralAppraisal adjustments
 33%-100%
94%
Foreclosed assets held for resale467 Appraisal of collateralAppraisal adjustments56%56%
__________________________________________________
1 Fair value is generally determined through management’s estimate or independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.
2 Appraisals may be adjusted downward by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percentage of the appraisal. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received, and/or age of the appraisal.
The following information should not be interpreted as an estimate of the fair value of the entire Corporation since a fair value calculation is only provided for a limited portion of the Corporation’s assets and liabilities. Management uses its best judgment in estimating the fair value of the Corporation’s financial instruments; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates herein are not necessarily indicative of the amounts the Corporation could have realized in a sales transaction on the dates indicated. The estimated fair value amounts have been measured as of their respective reporting dates and have not been reevaluated or updated for purposes of these Consolidated Financial Statements subsequent to those respective dates. As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates may be different than the amounts reported at each period end. Due to a wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Corporation’s disclosures and those of other companies may not be meaningful.
The following tables present the carrying amount and the estimated fair value of the Corporation’s financial instruments as of December 31:
2024
Carrying AmountEstimated Fair Value
(In thousands)TotalLevel 1Level 2Level 3
Financial assets:
Cash and due from banks$16,352 $16,352 $16,352 $— $— 
Interest-bearing deposits with banks30,910 30,910 30,910 — — 
Equity securities with readily determinable fair values919 919 919 — — 
Investment securities available for sale393,975 393,975 — 393,975 — 
Investment securities held to maturity64,578 56,924 — 56,924 — 
Loans held for sale426 426 — 426 — 
Loans, net1,665,630 1,635,351 — — 1,635,351 
Accrued interest receivable8,189 8,189 — 8,189 — 
Restricted investment in bank stocks10,853 N/A— N/A— 
Financial liabilities:
Demand deposits, savings, and money markets1,519,473 1,269,889 — 1,269,889 — 
Time deposits273,028 267,336 — 267,336 — 
Securities sold under repurchase agreements15,826 16,435 — 16,435 — 
FHLB Advances235,000 235,290 — 235,290 — 
Trust preferred and subordinated debt20,333 18,420 — 18,420 — 
Accrued interest payable1,551 1,551 — 1,551 — 
2023
Carrying AmountEstimated Fair Value
(In thousands)TotalLevel 1Level 2Level 3
Financial assets:
Cash and due from banks$21,442 $21,442 $7,063 $14,379 $— 
Interest-bearing deposits with banks44,516 44,516 44,516 — — 
Equity securities with readily determinable fair values928 928 928 — — 
Investment securities available for sale451,693 451,693 — 451,693 — 
Investment securities held to maturity64,600 59,057 — 59,057 — 
Loans held for sale280 280 — 280 — 
Loans, net1,608,019 1,562,703 — — 1,562,703 
Accrued interest receivable8,080 8,080 — 8,080 — 
Restricted investment in bank stocks9,677 N/A— N/A— 
Financial liabilities:
Demand deposits, savings, and money markets1,629,662 1,391,709 — 1,391,709 — 
Time deposits232,151 221,770 — 221,770 — 
Securities sold under repurchase agreements26,882 23,666 — 23,666 — 
Long-term FHLB advances205,000 206,950 — 206,950 — 
Trust preferred and subordinated debt20,292 16,992 — 16,992 — 
Accrued interest payable794 794 — 794 — 
v3.25.0.1
RETIREMENT PLANS
 12 Months Ended
Dec. 31, 2024
Postemployment Benefits [Abstract]  
RETIREMENT PLANS RETIREMENT PLANS
Defined-Contribution 401(k) Retirement Plans
The Bank maintains a 401(k) retirement plan for the benefit of eligible employees. The plan allows employees to contribute up to 100% of their compensation subject to certain limits based on federal tax laws. The plan also provides for the Bank to match 100% of the employee’s contribution to the plan up to 3% of the employee’s compensation, plus 50% the employee’s contribution to the plan on the next 2% of the employee’s compensation. Matching contributions vest immediately to the employee. Bank contributions to the plan were $1.1 million, $999 thousand and $901 thousand for 2024, 2023 and 2022, respectively, and were included as a component of salaries and employee benefits expense.
ACNB Insurance Services has a similar but separate 401(k) plan with the match of 6% for non-highly compensated employees and 3% match for highly compensated employees. ACNB Insurance Services contributions to the plan for 2024, 2023 and 2022 were $202 thousand, $183 thousand and $157 thousand, respectively, and were included as a component of salaries and employee benefits expense.
Nonqualified Compensation Plans
The Bank maintains nonqualified compensation plans for selected senior officers. The estimated present value of future benefits is accrued over the period from the effective date of the agreements until the expected retirement dates of the individuals. The balance accrued for these plans included in other liabilities as of December 31, 2024 and 2023, totaled $5.1 million and $4.5 million, respectively. The annual expense included in salaries and employee benefits expense totaled $946 thousand, $953 thousand and $628 thousand during the years ended December 31, 2024, 2023 and 2022, respectively. To fund the benefits under these plans, the Bank is the owner of single premium life insurance policies on participants in the nonqualified retirement plans.
Defined Benefit Pension Plan
The Bank has a non-contributory, defined benefit pension plan. No employee hired after March 31, 2012 is eligible to participate in the plan. Retirement benefits are a function of both years of service and compensation. As of the last annual census, the Bank had a combined 331 active, vested terminated and retired persons in the plan. The funding policy is to contribute annually the amount that is sufficient to meet the minimum funding requirements set forth by ERISA. The Bank uses a measurement date of December 31 for this plan.
The following table summarized the changes in the projected benefit obligation and fair value of plan assets for the plan years ended December 31:
(In thousands)20242023
Change in benefit obligation:  
Projected Benefit obligation at beginning of year$31,494 $30,226 
Service cost428 495 
Interest cost1,494 1,493 
Actuarial (gain) loss(1,544)983 
Benefits paid(1,830)(1,703)
Projected benefit obligation at end of year30,042 31,494 
Change in plan assets, at fair value:  
Fair value of plan assets at beginning of year46,427 43,119 
Actual return on plan assets1,806 5,011 
Benefits paid(1,830)(1,703)
Fair value of plan assets at end of year46,403 46,427 
Funded Status, included in other assets$16,361 $14,933 
The amounts recognized in accumulated other comprehensive income (loss) are as follows:
(In thousands)202420232022
Total net actuarial loss (pre-tax)$4,539 $5,120 $6,887 
For the years ended December 31, 2024 and 2023, the assumptions used to determine the benefit obligation are as follows:
20242023
Discount rate5.50 %4.90 %
Rate of compensation increase3.50 %3.50 %
The components of net periodic benefit cost (income) related to the non-contributory, defined benefit pension plan are as follows for the years ended December 31:
(In thousands)202420232022
Components of net periodic benefit cost (income):  
Service cost$428 $495 $777 
Interest cost1,494 1,493 1,052 
Expected return on plan assets(2,848)(2,653)(3,136)
Recognized net actuarial loss78 392 407 
Net Periodic Benefit Income(848)(273)(900)
Net gain(503)(1,375)(491)
Amortization of net loss(78)(392)(407)
Total recognized in other comprehensive income (loss)(581)(1,767)(898)
Total recognized in net periodic benefit cost (income) and other comprehensive income$(1,429)$(2,040)$(1,798)
The assumptions used to determine the net periodic benefit cost (income) are as follows for the years ended December 31:
202420232022
Discount rate4.90 %5.10 %2.75 %
Expected long-term rate of return on plan assets6.75 %6.75 %6.75 %
Rate of compensation increase3.50 %3.50 %3.50 %
For the year ended December 31, 2024 the mortality assumption was updated to reflect the most recently published mortality information. Estimated future benefit payments are as follows:
Year(In thousands)
2025$2,080 
20262,110 
20272,090 
20282,100 
20292,120 
2030-203411,040 
The Corporation’s overall investment strategy is to achieve a mix of investments to meet the long-term rate of return assumption and near-term pension obligations with a diversification of asset types, fund strategies and fund managers. The mix of investments is adjusted periodically by retaining an advisory firm to recommend appropriate allocations after reviewing the Corporation’s risk tolerance on contribution levels, funded status and plan expense, and any applicable regulatory requirements. The weighted-average assets’ allocation in the following table represents the Corporation’s conclusion on the appropriate mix of investments. The specific investment vehicles are institutional separate accounts from a variety of fund managers which are regularly reviewed by the Corporation for acceptable performance.
The Corporation’s pension plan weighted-average assets’ allocations at December 31, 2024 and 2023, are as follows:
20242023
Equity securities42 %43 %
Debt securities55 54 
Real property3 3 
100 %100 %
Equity securities consisted of $3.6 million of the Corporation’s common stock, or 8% of total plan assets, and $3.9 million, or 8% of total plan assets, at December 31, 2024 and 2023, respectively.
Fair value measurements were as follows:
(In thousands)TotalLevel 1Level 2Level 3
December 31, 2024
Equity securities$19,286 $3,565 $15,721 $— 
Debt securities25,730 — 25,730 — 
Real estate1,387 — 1,387 — 
Total$46,403 $3,565 $42,838 $— 
December 31, 2023
Equity securities$20,123 $3,876 $16,247 $— 
Debt securities24,891 — 24,891 — 
Real estate1,413 — 1,413 — 
Total$46,427 $3,876 $42,551 $— 
v3.25.0.1
INCOME TAXES
 12 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
The components of income tax expense were as follows:
(In thousands)202420232022
Current:  
Federal$6,780 $7,924 $7,461 
State1,014 755 1,259 
Total7,794 8,679 8,720 
Deferred:  
Federal806 (534)592 
State(27)16 (113)
Total779 (518)479 
Provision for income taxes$8,573 $8,161 $9,199 
The differences between the ETR and the federal statutory income tax rate are as follows:
 202420232022
Federal income tax at statutory rate21.0 %21.0 %21.0 %
State income taxes, net of federal benefit1.9 1.5 1.8 
Tax-exempt income(1.0)(1.3)(1.1)
Earnings on investment in bank-owned life insurance(1.0)(1.0)(0.7)
Tax credit benefits— — (0.6)
Nondeductible merger-related costs0.7 — — 
Other(0.4)0.3 0.1 
  Effective income tax rate21.2 %20.5 %20.5 %
The net deferred tax asset recorded by the Corporation is included in other assets and consists of the following tax effects of temporary differences as of December 31:
(In thousands)20242023
Deferred tax assets:  
Investment securities available for sale$11,178 $12,052 
Allowance for credit losses3,909 4,533 
Accrued deferred compensation1,436 1,166 
Deferred director fees1,153 1,097 
Defined benefit pension plan1,031 1,162 
Other837 783 
Lease liability592 742 
Allowance for unfunded commitments315 390 
Nonaccrual interest246 740 
Accumulated depreciation59 3 
Total gross deferred tax assets20,756 22,668 
Deferred tax liabilities:  
Prepaid defined benefit pension plan cost4,729 4,552 
Goodwill and intangible assets, net1,449 1,439 
Right of use asset592 742 
Prepaid expenses50 67 
Purchase accounting25 25 
Deferred loan fees(46)57 
Total gross deferred tax liabilities6,799 6,882 
Net deferred tax asset$13,957 $15,786 
The Corporation follows accounting guidance related to accounting for uncertainty in income taxes. Under the “more likely than not” threshold guidelines, the Corporation believes no significant uncertain tax positions exist, either individually or in the aggregate, that would give rise to the non-recognition of an existing tax benefit. The Corporation did not have any material uncertain tax positions at December 31, 2024 or 2023. The Corporation’s policy is to recognize interest and penalties as a discrete item in income tax expense in the Consolidated Statements of Income.
The Corporation and its subsidiaries are subject to U.S. federal income tax as well as income tax of the states for which income is derived. The Corporation is no longer subject to examination by taxing authorities for years before 2020.
v3.25.0.1
REGULATORY MATTERS
 12 Months Ended
Dec. 31, 2024
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]  
REGULATORY MATTERS REGULATORY MATTERS
Regulatory Capital Requirements
The Corporation and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet the minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Corporation’s Consolidated Financial Statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Corporation and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain OBS items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
Minimum regulatory capital requirements established by Basel III rules require the Corporation and the Bank to:
•Meet a minimum Tier 1 leverage capital ratio of 4.0% of average assets;
•Meet a minimum Common Equity Tier 1 capital ratio of 4.5% of risk-weighted assets;
•Meet a minimum Tier 1 capital ratio of 6.0% of risk-weighted assets;
•Meet a minimum Total capital ratio of 8.0% of risk-weighted assets;
•Maintain a “capital conservation buffer” of 2.5% above the minimum risk-based capital requirements, which must be maintained to avoid restrictions on capital distributions and certain discretionary bonus; and,
•Comply with the definition of capital to improve the ability of regulatory capital instruments to absorb losses.
Management believes, as of December 31, 2024, that the Corporation and the Bank meet all capital adequacy requirements to which they are subject. There are no subsequent conditions or events that management believes have changed the Bank’s category.
The actual and required regulatory capital levels, leverage ratios and risk-based capital ratios as of December 31:
 ActualFor Capital Adequacy
Purposes
To be Well Capitalized
under Prompt Corrective Action Provisions 2
(Dollars in thousands)AmountRatio
Amount 1
Ratio 1
AmountRatio
CORPORATION      
2024    
Tier 1 Leverage Capital (to average assets)$303,105 12.52 %$96,871 4.0%N/AN/A
Common Equity Tier 1 Capital (to risk-weighted assets)297,772 16.27 82,343 4.5N/AN/A
Tier 1 Capital (to risk-weighted assets)303,105 16.56 109,791 6.0N/AN/A
Total Capital (to risk-weighted assets)335,949 18.36 146,388 8.0N/AN/A
2023      
Tier 1 Leverage Capital (to average assets)$280,135 11.57 %$96,822 4.0%N/AN/A
Common Equity Tier 1 Capital (to risk-weighted assets)274,844 15.16 81,562 4.5N/AN/A
Tier 1 Capital (to risk-weighted assets)280,135 15.46 108,749 6.0N/AN/A
Total Capital (to risk-weighted assets)315,564 17.41 144,999 8.0N/AN/A
ACNB BANK      
2024      
Tier 1 Leverage Capital (to average assets)$290,567 12.03 %$96,652 4.0%$120,815 5.0%
Common Equity Tier 1 Capital (to risk-weighted assets)290,567 16.03 81,565 4.5117,816 6.5
Tier 1 Capital (to risk-weighted assets)290,567 16.03 108,753 6.0145,005 8.0
Total Capital (to risk-weighted assets)308,412 17.02 145,005 8.0181,256 10.0
2023      
Tier 1 Leverage Capital (to average assets)$268,314 11.12 %$96,494 4.0%$120,618 5.0%
Common Equity Tier 1 Capital (to risk-weighted assets)268,314 14.86 81,260 4.5117,375 6.5
Tier 1 Capital (to risk-weighted assets)268,314 14.86 108,346 6.0144,462 8.0
Total Capital (to risk-weighted assets)288,742 15.99 144,462 8.0180,577 10.0
__________________________________________________
1 Amounts and ratios do not include capital conservation buffer.
2 N/A - Not applicable as “well capitalized” applies only to banks.
Dividend Restrictions
Dividend payments by the Bank to the Corporation are subject to certain legal and regulatory limitations. As of December 31, 2024 $51.9 million of undistributed earnings of the Bank, included in consolidated retained earnings, was available for distribution to the Corporation as dividends without prior regulatory approval. Additionally, dividends paid by the Bank to the Corporation would be prohibited if the effect thereof would cause the Bank’s capital to be reduced below applicable minimum capital requirements.
v3.25.0.1
COMMITMENTS AND CONTINGENCIES
 12 Months Ended
Dec. 31, 2024
Risks and Uncertainties [Abstract]  
COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES
Commitments
The Corporation is a party to financial instruments with OBS risk in the normal course of business to meet the financing needs of its customers. These financial instruments consist primarily of commitments to extend credit (typically mortgages and commercial loans) and, to a lesser extent, standby letters of credit. To varying degrees, these instruments involve elements of credit and interest rate risk in excess of the amount recognized on the Consolidated Statements of Condition.
The Corporation’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. The Corporation uses the same credit policies in making commitments and conditional obligations as it does for on balance sheet instruments. The Corporation does not anticipate any material losses from these commitments.
Commitments to extend credit, including commitments to grant loans and unfunded commitments under lines of credit, are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Corporation evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Corporation upon extensions of credit, is based on management’s credit evaluation of the customer. Collateral held varies but may include accounts receivable, inventory, property and equipment and income-producing commercial properties. On loans secured by real estate, the Corporation generally requires loan to value ratios of no greater than 80%.
Standby letters of credit are conditional commitments issued by the Corporation to guarantee the performance of a customer to a third-party. Those guarantees are primarily issued to support public and private borrowing arrangements and similar transactions. The terms of the letters of credit vary and may have renewal features. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. The Corporation generally holds collateral and/or personal guarantees supporting those commitments for which collateral is deemed necessary. Management believes that the proceeds obtained through a liquidation of such collateral and the enforcement of guarantees would be sufficient to cover the maximum potential amount of future payments required under the corresponding guarantees.
The Corporation maintains a $5.0 million unsecured line of credit with a correspondent bank. The Corporation guarantees a note related to a $1.5 million commercial line of credit with a correspondent bank, with normal terms and conditions for such a line, for ACNB Insurance Services, the borrower. The commercial line of credit is for general working capital needs as they arise by the ACNB Insurance Services. The liability is recorded for the net drawn amount of this line, no further liability is recorded for the remaining line as to the guarantor’s obligation as the guarantor would have full recourse from all assets of its wholly-owned subsidiary. There were no advances on these lines at December 31, 2024 and 2023.
The Corporation has not been required to perform on any financial guarantees, and has not incurred any losses on its commitments, during the past three years.
A summary of the Corporation’s commitments at December 31 were as follows:
(In thousands)20242023
Commitments to extend credit$372,839 $403,300 
Standby letters of credit15,103 21,029 
Contingencies
The Corporation is subject to claims and lawsuits which arise primarily in the ordinary course of business. Based on information presently available and advice received from legal counsel representing the Corporation in connection with any such claims and lawsuits, it is the opinion of management that the disposition or ultimate determination of any such claims and lawsuits will not have a material adverse effect on the consolidated financial position, consolidated results of operations or liquidity of the Corporation.
v3.25.0.1
EARNINGS PER SHARE
 12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
EARNINGS PER SHARE EARNINGS PER SHARE
The Corporation has a simple capital structure. Basic earnings per share of common stock is calculated as net income available to common shareholders divided by the weighted average number of shares outstanding less unvested restricted stock at the end of the period. Diluted earnings per share is calculated as net income available to common shareholders divided by the weighted average number of shares outstanding.
Years Ended December 31,
202420232022
Weighted average shares outstanding (basic)8,503,473 8,507,803 8,623,012 
Dilutive effect of unvested shares33,492 28,322 — 
Weighted average shares outstanding (diluted)8,536,965 8,536,125 8,623,012 
Per share:
Basic$3.75 $3.72 $4.15 
Diluted3.73 3.71 4.15 
There were no antidilutive instruments at December 31, 2024, 2023 and 2022.
v3.25.0.1
STOCKHOLDERS' EQUITY
 12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
STOCKHOLDERS' EQUITY STOCKHOLDERS’ EQUITY
Accumulated Other Comprehensive Loss
Other comprehensive income includes unrealized gains and losses on investment securities AFS and unrealized gains and losses on changes in funded status of the pension plan which are also recognized as separate components of equity. The components of the accumulated other comprehensive loss, net of taxes, are as follows:
(In thousands)Unrealized (Losses) Gains on
Securities		Pension
Liability		Accumulated
Other
Comprehensive
Loss
Balance at December 31, 2021$(3,474)$(6,071)$(9,545)
Unrealized losses on AFS securities, net of income tax(50,192)— (50,192)
Realized losses on securities, net of income tax193— 193 
Amortization of unrealized losses on securities transferred to HTM, net of income tax739— 739 
Amortization of pension net loss, net of income tax— 317317 
Unrecognized pension net gain, net of income tax— 476 476 
Net current period other comprehensive (loss) income$(49,260)$793 $(48,467)
Balance at December 31, 2022$(52,734)$(5,278)$(58,012)
Unrealized gain on AFS securities, net of income tax6,814 — 6,814 
Realized losses on securities, net of income tax4,052 — 4,052 
Amortization of unrealized losses on securities transferred to HTM, net of income tax916 — 916 
Amortization of pension net loss, net of income tax— 258 258 
Unrecognized pension net gain, net of income tax— 1,063 1,063 
Net current period other comprehensive income$11,782 $1,321 $13,103 
Balance at December 31, 2023
$(40,952)$(3,957)$(44,909)
Unrealized gain on AFS securities, net of income tax1,992 — 1,992 
Realized gains on securities, net of income tax(53)— (53)
Amortization of unrealized losses on securities transferred to HTM, net of income tax853 — 853 
Amortization of pension net loss, net of income tax— 60 60 
Unrecognized pension net gain, net of income tax— 389 389 
Net current period other comprehensive income$2,792 $449 $3,241 
Balance at December 31, 2024
$(38,160)$(3,508)$(41,668)
Dividend Reinvestment Plan
In January 2011, the Corporation offered stockholders the opportunity to participate in the ACNB Corporation Dividend Reinvestment and Stock Purchase Plan. The plan provides registered holders of ACNB Corporation common stock with a convenient way to purchase additional shares of common stock by permitting participants in the plan to automatically reinvest cash dividends on all or a portion of the shares owned and to make quarterly voluntary cash payments under the terms of the plan. Participation in the plan is voluntary, and there are eligibility requirements to participate in the plan. During 2024, 2023 and 2022, 21,750, 20,361 and 20,908 shares, respectively, were issued under this plan with proceeds in the amount of $832 thousand, $721 thousand and $713 thousand, respectively. Proceeds are used for general corporate purposes.
Stock Incentive Plan
On May 1, 2018, stockholders approved and ratified the ACNB Corporation 2018 Omnibus Stock Incentive Plan, effective as of March 20, 2018, in which awards shall not exceed, in the aggregate, 400,000 shares of common stock, plus any shares that were authorized, but not issued, under the ACNB Corporation 2009 Restricted Stock Plan. The ACNB Corporation 2009 Restricted Stock Plan expired by its own terms after 10 years on February 24, 2019. No further shares may be issued under this plan. The remaining 174,055 shares were transferred to the ACNB Corporation 2018 Omnibus Stock Incentive Plan.
As of December 31, 2024, 138,019 shares were issued under this plan, of which 38,438 were unvested. Plan expense is recognized over the vesting period of the stock issued and resulted in $1.3 million, $1.0 million and $729 thousand of compensation expense during the years ended December 31, 2024, 2023 and 2022, respectively.
Share Repurchase Plan
On October 24, 2022, the Corporation announced that the Board of Directors approved on October 18, 2022, a plan to repurchase, in open market and privately negotiated transactions, up to 255,575, or approximately 3%, of the outstanding shares of the Corporation’s common stock. This new common stock repurchase program replaces and supersedes any and all earlier announced repurchase plans. There were 6,842 treasury shares purchased under this plan during the year ended December 31, 2024. As of December 31, 2024, 67,908 shares had been repurchased under this plan.
v3.25.0.1
ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION
 12 Months Ended
Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]  
ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION PARENT COMPANY ONLY FINANCIAL INFORMATION
CONDENSED STATEMENTS OF CONDITION
 December 31,
(In thousands)20242023
ASSETS  
Cash$19,826 $16,647 
Investment in banking subsidiary284,416 258,748 
Investment in other subsidiaries19,331 20,023 
Securities and other assets191 1,107 
Receivable from banking subsidiary63 1,355 
Total Assets$323,827 $297,880 
LIABILITIES AND STOCKHOLDERS’ EQUITY  
Long-term borrowings$20,333 $20,292 
Other liabilities221 127 
Stockholders’ equity303,273 277,461 
Total Liabilities and Stockholders’ Equity$323,827 $297,880 
CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS)
 Years Ended December 31,
(In thousands)202420232022
Dividends from banking subsidiary$10,713 $9,702 $9,117 
Net (loss) gain on sales of securities— (7)13 
Other Income31 41 519 
10,744 9,736 9,649 
Expenses2,859 1,934 1,653 
7,885 7,802 7,996 
Income tax benefit426 413 516 
8,311 8,215 8,512 
Equity in undistributed earnings of subsidiaries23,535 23,473 27,240 
Net Income$31,846 $31,688 $35,752 
Comprehensive Income (Loss) $35,087 $44,791 $(12,715)
CONDENSED STATEMENTS OF CASH FLOWS
 Years Ended December 31,
(In thousands)202420232022
CASH FLOWS FROM OPERATING ACTIVITIES  
Net income$31,846 $31,688 $35,752 
Equity in undistributed earnings of subsidiaries(23,535)(23,473)(27,240)
Decrease (increase) in receivable from banking subsidiary1,292 153 (311)
Gain on sale of equity securities— (7)(13)
Mark-to-market gain on equity securities— — 177 
Gain on sale of low-income housing partnership— — (421)
Other2,314 439 (308)
Net Cash Provided by Operating Activities11,917 8,800 7,636 
CASH FLOWS FROM INVESTING ACTIVITIES  
Return on investment from subsidiary1,800 — 13,000 
Proceeds from sale of low-income housing partnership— — 421 
Proceeds from sale of equity securities— 592 811 
Net Cash Used in Investing Activities1,800 592 14,232 
CASH FLOWS USED IN FINANCING ACTIVITIES  
Repayments on long-term borrowings— — (2,700)
Dividends paid(10,713)(9,702)(9,117)
Common stock repurchased(249)(2,027)(6,681)
Common stock issued424 721 1,442 
Net Cash Used in Financing Activities(10,538)(11,008)(17,056)
Net Increase (Decrease) in Cash and Cash Equivalents3,179 (1,616)4,812 
CASH AND CASH EQUIVALENTS — BEGINNING16,647 18,263 13,451 
CASH AND CASH EQUIVALENTS — ENDING$19,826 $16,647 $18,263 
v3.25.0.1
SEGMENT AND RELATED INFORMATION
 12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
SEGMENT AND RELATED INFORMATION SEGMENT AND RELATED INFORMATION
The Corporation adopted the amendments of ASU 2023-07, “Segment Reporting (Topic 280)” related to annual disclosure requirements effective January 1, 2024. The Corporation’s reportable segments are determined by the ACNB Board of Directors. The reportable segments are determined by how operating decisions are made and performance is assessed. The CODM evaluates the financial performance of the various business components by evaluating revenue streams, significant expenses and budget to actual results in assessing the performance of the Corporation’s segments and in order to determine the allocation of resources. The ACNB Board of Directors has determined that the Corporation has two reporting segments, the Bank and ACNB Insurance Services and considers the President and CEO of ACNB Corporation to be the CODM of both reporting segments. Key measurements of performance in the banking segment are the net interest margin and the provision for credit losses, both which indicate the Bank’s ability to manage risk, and also the Bank’s ability to grow noninterest income and manage the largest noninterest expense, salaries and employee benefits. AIS Insurance Services is a subsidiary of the Corporation and is governed by its own Board of Directors. Key measurements of performance are revenues from commissions on insurance policies and the significant expense associated with those revenues are salaries and employee benefits. These two factors are significant in assessing the performance of the agency.
Reportable segment information and reconciliations to the consolidated financial information for the years ended December 31:
(In thousands)BankingInsurance
Other1
Total
2024   
Interest income$107,456 $4 $5 $107,465 
Noninterest income14,976 9,754 — 24,730 
Total consolidated revenues132,195 
Interest expense22,803 — 1,051 23,854 
Reversal of credit losses and unfunded commitments(2,763)— — (2,763)
Depreciation and amortization expense2,246 787 — 3,033 
Salaries and employee benefits36,670 5,869 390 42,929 
Other noninterest expense2
21,758 1,574 1,391 24,723 
Income before income taxes41,718 1,528 (2,827)40,419 
Provision for income taxes8,579 420 (426)8,573 
Net income (loss)$33,139 $1,108 $(2,401)$31,846 
Total assets$2,377,180 $22,026 $(4,376)$2,394,830 
Goodwill$35,800 $8,385 $— $44,185 
Capital expenditures$929 $31 $— $960 
2023   
Interest income$96,600 $3 $37 $96,640 
Noninterest income9,133 9,319 (7)18,445 
Total consolidated revenues115,085 
Interest expense7,268 — 1,052 8,320 
Provision for credit losses and unfunded commitments844 — — 844 
Depreciation and amortization expense2,515 847 — 3,362 
Salaries and employee benefits35,322 5,609 — 40,931 
Other noninterest expense2
19,736 1,165 87821,779 
Income before income taxes40,048 1,701 (1,900)39,849 
Provision for income taxes8,139 435 (413)8,161 
Net income (loss)$31,909 $1,266 $(1,487)$31,688 
Total assets$2,397,992 $23,187 $(2,332)$2,418,847 
Goodwill$35,800 $8,385 $— $44,185 
Capital expenditures$424 $744 $— $1,168 
2022
Interest income$86,952 $2 $95 $87,049 
Noninterest income13,242 8,307 258 21,807 
Total consolidated revenues108,856 
Interest expense2,672 35 917 3,624 
Depreciation and amortization expense2,995 801 — 3,796 
Salaries and employee benefits30,941 5,038 — 35,979 
Other noninterest expense2
18,826 1,123 557 20,506 
Income before income taxes44,760 1,312 (1,121)44,951 
Provision for income taxes9,353 362 (516)9,199 
Net income (loss)$35,407 $950 $(605)$35,752 
Total assets$2,487,272 $21,414 $16,821 $2,525,507 
Goodwill$35,800 $8,385 $— $44,185 
Capital expenditures$1,783 $28 $— $1,811 
__________________________________________________
1 Includes the holding company and intercompany eliminations, including the intersegment elimination of interest income and interest expense.
2 Other noninterest expense for Banking includes equipment, net occupancy, professional services, other tax, FDIC and regulatory and merger-related expenses. Other noninterest expense for Insurance includes equipment, net occupancy and professional services expenses.
v3.25.0.1
Pay vs Performance Disclosure - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pay vs Performance Disclosure      
Net income $ 31,846 $ 31,688 $ 35,752
v3.25.0.1
Insider Trading Arrangements
 3 Months Ended
Dec. 31, 2024
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.0.1
Insider Trading Policies and Procedures
 12 Months Ended
Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted true
v3.25.0.1
Cybersecurity Risk Management and Strategy Disclosure
 12 Months Ended
Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
ACNB recognizes the critical importance of identifying, assessing and managing material risks from cybersecurity threats and is committed to implementing and maintaining a comprehensive information security program to manage such risks and safeguard its systems and data. Governance of cybersecurity risk is based on the Corporation’s Information Security Program and related policies and procedures, which are designed in conformance with industry standards and compliance with Section 39 of the Federal Deposit Insurance act and sections 501 and 505(b) of GLBA, and to protect the confidentiality, integrity and availability of its information assets. The Corporation’s Board of Directors is responsible for overseeing the development, implementation and maintenance of the Corporation’s overall information security standards. The Audit Committee of the Board of Directors has enterprise risk management oversight responsibilities, which includes information security. Information Security-related functions are performed by both ACNB Bank Risk Management and Technology Services personnel. The Information Security Committee is an ACNB Bank management committee which is responsible for providing oversight and direction for information security matters and standards and meets periodically throughout the year with minutes of their meetings provided to the Corporation’s Board of Directors. ACNB Bank’s Information Security Officer is responsible for managing and monitoring the Information Security Program, and is a part of the Risk Management department, which ultimately reports to the Chief Risk Officer. Additionally, the Information Security Program is supported by ACNB Bank’s Technology Services Department which is led by the Technology Services Manager who reports to the Chief Credit and Operations Officer.
The Information Security Program includes Information Security strategy, an incident response plan for incident management; access rights management; threat and vulnerability management; security training; risk and maturity assessments; security systems controls and standards; data use, reproduction, storage and destruction standards, intrusion prevention management, patch management, physical and environmental protections, encryption standards, malicious code prevention, intelligence sharing, and Information Security Monitoring, including architecture considerations, activity monitoring and condition monitoring. On an annual basis, Information Security-related risk assessments and a maturity analysis are performed and reported to the Board of Directors or the Board Audit Committee. Risks from cybersecurity threats associated with use of third-party service providers are addressed as part of the vendor management program, in initial and ongoing assessment of service providers. Information Security training is conducted for both employees and the Board of Directors annually. Training includes sharing educational communications to increase employee awareness of cybersecurity risks.
ACNB engages independent third-party assessors and auditors in connection with its information security program, including to conduct external and internal penetration testing and internal vulnerability scanning, independent audits and risk assessments. Technology Services personnel perform internal security practices, including periodic internal vulnerability scanning using commercial software tools and follow-up with corrective measures as required, monitoring for unauthorized access attempts, uses dynamically updated Endpoint Detection and Response for anti-malware, and deploying dynamically updated firewalls to protect against unknown actors. Platforms are in place with the ability to automate containment without the risk of employee response delays and a third party provider performs additional external vulnerability scanning, network threat detection and automated containment, risk analysis and continuous monitoring. The Information Security Officer performs monthly phishing exercises with the reporting of results to the Information Security Committee and an annual summary of results to the Audit Committee. ACNB Bank also utilizes third-party service providers in the ordinary course of business. As part of ACNB Bank’s management program, initial and ongoing information security due diligence is reviewed and assessed on ACNB Bank’s service providers as appropriate, based on level of access to, storage of and processing of corporate and customer confidential information. Such due diligence may include review of service organization control reports and other independent testing, information security and incident response programs.
As a regulated financial institution, ACNB Bank is also subject to financial privacy laws and its cybersecurity practices are subject to oversight by the federal banking agencies. For additional information, see “Supervision and Regulation” included in Part I. Item 1 – Business of this report.
Although ACNB has not, as of the date of this Annual Report on Form 10-K, experienced a cybersecurity threat or incident that materially affected its business strategy, results of operations or financial condition, there can be no guarantee that ACNB will not experience such an incident in the future or the potential impact thereof. For additional information regarding the risk ACNB faces from cybersecurity threats, please see the risk factors titled “ACNB’s operations of its business, including its transactions with customers, are increasingly done electronically, and this has increased its risks related to cybersecurity”. and “ACNB’s communications, information, and technology systems may experience a failure, interruption or breach in security”. included in Part I. Item 1A. — Risk Factors of this report.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block] ACNB recognizes the critical importance of identifying, assessing and managing material risks from cybersecurity threats and is committed to implementing and maintaining a comprehensive information security program to manage such risks and safeguard its systems and data.
Cybersecurity Risk Management Third Party Engaged [Flag] true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] false
Cybersecurity Risk Board of Directors Oversight [Text Block] The Corporation’s Board of Directors is responsible for overseeing the development, implementation and maintenance of the Corporation’s overall information security standards. The Audit Committee of the Board of Directors has enterprise risk management oversight responsibilities, which includes information security. Information Security-related functions are performed by both ACNB Bank Risk Management and Technology Services personnel. The Information Security Committee is an ACNB Bank management committee which is responsible for providing oversight and direction for information security matters and standards and meets periodically throughout the year with minutes of their meetings provided to the Corporation’s Board of Directors. ACNB Bank’s Information Security Officer is responsible for managing and monitoring the Information Security Program, and is a part of the Risk Management department, which ultimately reports to the Chief Risk Officer. Additionally, the Information Security Program is supported by ACNB Bank’s Technology Services Department which is led by the Technology Services Manager who reports to the Chief Credit and Operations Officer.
The Information Security Program includes Information Security strategy, an incident response plan for incident management; access rights management; threat and vulnerability management; security training; risk and maturity assessments; security systems controls and standards; data use, reproduction, storage and destruction standards, intrusion prevention management, patch management, physical and environmental protections, encryption standards, malicious code prevention, intelligence sharing, and Information Security Monitoring, including architecture considerations, activity monitoring and condition monitoring. On an annual basis, Information Security-related risk assessments and a maturity analysis are performed and reported to the Board of Directors or the Board Audit Committee. Risks from cybersecurity threats associated with use of third-party service providers are addressed as part of the vendor management program, in initial and ongoing assessment of service providers. Information Security training is conducted for both employees and the Board of Directors annually. Training includes sharing educational communications to increase employee awareness of cybersecurity risks.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] The Corporation’s Board of Directors is responsible for overseeing the development, implementation and maintenance of the Corporation’s overall information security standards.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] Information Security-related functions are performed by both ACNB Bank Risk Management and Technology Services personnel. The Information Security Committee is an ACNB Bank management committee which is responsible for providing oversight and direction for information security matters and standards and meets periodically throughout the year with minutes of their meetings provided to the Corporation’s Board of Directors. ACNB Bank’s Information Security Officer is responsible for managing and monitoring the Information Security Program, and is a part of the Risk Management department, which ultimately reports to the Chief Risk Officer. Additionally, the Information Security Program is supported by ACNB Bank’s Technology Services Department which is led by the Technology Services Manager who reports to the Chief Credit and Operations Officer.
Cybersecurity Risk Role of Management [Text Block] Information Security-related functions are performed by both ACNB Bank Risk Management and Technology Services personnel. The Information Security Committee is an ACNB Bank management committee which is responsible for providing oversight and direction for information security matters and standards and meets periodically throughout the year with minutes of their meetings provided to the Corporation’s Board of Directors. ACNB Bank’s Information Security Officer is responsible for managing and monitoring the Information Security Program, and is a part of the Risk Management department, which ultimately reports to the Chief Risk Officer. Additionally, the Information Security Program is supported by ACNB Bank’s Technology Services Department which is led by the Technology Services Manager who reports to the Chief Credit and Operations Officer.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] Information Security-related functions are performed by both ACNB Bank Risk Management and Technology Services personnel. The Information Security Committee is an ACNB Bank management committee which is responsible for providing oversight and direction for information security matters and standards and meets periodically throughout the year with minutes of their meetings provided to the Corporation’s Board of Directors. ACNB Bank’s Information Security Officer is responsible for managing and monitoring the Information Security Program, and is a part of the Risk Management department, which ultimately reports to the Chief Risk Officer. Additionally, the Information Security Program is supported by ACNB Bank’s Technology Services Department which is led by the Technology Services Manager who reports to the Chief Credit and Operations Officer.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block] Information Security training is conducted for both employees and the Board of Directors annually. Training includes sharing educational communications to increase employee awareness of cybersecurity risks.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] Information Security-related functions are performed by both ACNB Bank Risk Management and Technology Services personnel. The Information Security Committee is an ACNB Bank management committee which is responsible for providing oversight and direction for information security matters and standards and meets periodically throughout the year with minutes of their meetings provided to the Corporation’s Board of Directors. ACNB Bank’s Information Security Officer is responsible for managing and monitoring the Information Security Program, and is a part of the Risk Management department, which ultimately reports to the Chief Risk Officer. Additionally, the Information Security Program is supported by ACNB Bank’s Technology Services Department which is led by the Technology Services Manager who reports to the Chief Credit and Operations Officer.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true
v3.25.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policy)
 12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Nature of Operations
Nature of Operations
ACNB Corporation, headquartered in Gettysburg, Pennsylvania, provides banking, wealth management and insurance services to businesses and consumers through its wholly-owned subsidiaries, ACNB Bank and ACNB Insurance Services. The Bank engages in full-service commercial and consumer banking and wealth management services, including trust and retail brokerage, through its 27 community banking offices, including 18 community banking office locations in Adams, Cumberland, Franklin, Lancaster and York Counties, Pennsylvania, and nine community banking office locations in Carroll and Frederick Counties, Maryland. There are also loan production offices in York, Pennsylvania, and Hunt Valley, Maryland.
ACNB Insurance Services, Inc. is a full-service insurance agency based in Westminster, Maryland, with additional locations in Jarrettsville, Maryland, and Gettysburg, Pennsylvania. The agency offers a broad range of property, casualty, health, life and disability insurance to both individual and commercial clients.
Basis of Financial Statements
Basis of Financial Statements
The Consolidated Financial Statements have been prepared in accordance with GAAP and include the accounts of the Corporation and its wholly-owned subsidiaries. All significant intercompany transactions have been eliminated.
Subsequent Events The Corporation evaluates subsequent events through the filing of this report with the SEC.
Recent Merger
Effective February 1, 2025, ACNB closed the acquisition of Traditions Bancorp, Inc., holding company for Traditions Bank, York, Pennsylvania. Traditions was merged with and into a wholly-owned subsidiary of ACNB Corporation immediately followed by the merger of Traditions Bank with and into ACNB Bank. ACNB Bank is operating the former Traditions Bank offices as “Traditions Bank, A Division of ACNB Bank”. Traditions Bank operated eight community banking offices in South Central Pennsylvania which were included in the acquisition. In connection with the close of the acquisition, Traditions stockholders received 0.7300 shares of ACNB Corporation common stock for each share of Traditions common stock that they owned as of the closing date, with cash paid in lieu of fractional shares. ACNB issued 2,035,270 shares of its common stock, and cash in exchange for fractional shares based on $41.10 per whole share of ACNB common stock. The transaction is valued at $83.8 million. ACNB is currently finalizing the accounting for this transaction and expects to complete the preliminary allocation of the purchase consideration to the assets acquired and liabilities assumed by the end of the first quarter of 2025.
As of December 31, 2024 and 2023, Traditions had total assets of $870.1 million and $840.1 million, respectively, total loans of $674.4 million and $668.8 million, respectively, and total deposits of $749.3 million and $731.1 million, respectively. Common shares outstanding totaled 2,788,164 and 2,736,544 at December 31, 2024 and 2023, respectively.
Use of Estimates
Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for credit losses.
Cash Flows
Cash and Cash Equivalents
Cash and cash equivalents include cash on hand, balances due from banks, and federal funds sold, all of which mature within 90 days and interest-bearing deposits with banks. Net cash flows are reported for customer loan and deposit transactions, interest-bearing deposits in other financial institutions, and federal funds purchased and repurchase agreements. Interest-bearing deposits in other financial institutions are carried at cost.
Securities
Investment Securities
On January 1, 2023 the Corporation adopted ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”, universally referred to as CECL. ASU 2016-13 applies to all financial instruments carried at amortized cost, including HTM securities, and makes targeted improvements to the accounting for credit losses on
AFS securities. In addition, Topic 326 amends the accounting for credit losses on certain other debt securities. The Corporation did not record any allowance for credit losses on its HTM debt securities and did not record any impairment on its AFS debt securities as a result of adopting Topic 326.
ACNB conducted a review of its investment portfolio and determined that for certain classes of securities it would be appropriate to assume the expected credit loss to be zero. This zero-credit loss assumption applies to direct debt issuances of the U.S. Treasury and U.S. agencies. The reasons behind the adoption of the zero-credit loss assumption are as follows:
•     High credit rating;
•     Long history with no credit losses;
•     Guaranteed by a sovereign entity;
•     Widely recognized as “risk-free rate”;
•     Can print its own currency;
•     Currency is routinely held by central banks, used in international commerce, and commonly viewed as reserve currency; and,
•     Currently under the U.S. Government conservatorship or receivership.
ACNB continuously monitors any changes in economic conditions, credit downgrades, changes to explicit or implicit guarantees granted to certain debt issuers, and any other relevant information that would indicate potential credit deterioration and prompt ACNB to reconsider its zero-credit loss assumption. As of December 31, 2024, no HTM debt securities required an ACL.
ACNB monitors non-U.S. Treasury and non-U.S. agency debt for potential credit deterioration on a quarterly basis. An analysis of the materiality of the impact to the ACL is performed. If it is determined there is a material impact, ACNB will book a reserve to the ACL or record an impairment. As of December 31, 2024 no reserves or impairment were booked related to these securities.
Equity securities with readily determinable fair values are recorded at fair value with changes in fair value recognized in net income. Debt securities that management has the positive intent and ability to hold to maturity are classified as “held to maturity” and recorded at amortized cost. Debt securities not classified as HTM or trading are classified as “available for sale” and recorded at fair value, with unrealized gains and losses excluded from earnings and reported, net of tax, in other comprehensive income (loss).
Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. In relation to HTM securities, any declines in the fair value that are assumed to impair the credit quality of such debt instruments are evaluated and the estimated loss is incorporated into the Banks’ expected credit losses for any given period. In estimating impairment losses on debt securities, management considers (1) whether management intends to sell the security, or (2) if it is more likely than not that management will be required to sell the security before recovery, or (3) if management does not expect to recover the entire amortized cost basis. In assessing potential impairment for equity securities, consideration is given to management’s intention and ability to hold the securities until recovery of unrealized losses. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.
Transfers of debt securities into the HTM category from the AFS category are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in other comprehensive income (loss) and in the carrying value of the HTM securities. Such amounts are amortized over the remaining expected life of the security.
Loans Held for Sale
Loans Held for Sale
Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors or current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to income.
Mortgage loans held for sale are sold with the mortgage servicing rights released to another financial institution through a correspondent relationship. The correspondent financial institution absorbs all of the risk related to rate lock commitments. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price and the carrying value of the related mortgage loans sold.
Loans
Loans
The Corporation grants commercial, residential, and consumer loans to customers. A substantial portion of the loan portfolio is represented by commercial real estate and residential mortgage loans throughout southcentral Pennsylvania and northern Maryland. The ability of the Corporation’s debtors to honor their contracts is dependent upon the real estate values and general economic conditions in this area.
Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs and any deferred fees or costs on originated loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.
The loans receivable portfolio is segmented into commercial, residential mortgage, home equity lines of credit, and consumer loans. Commercial loans consist of the following classes: commercial real estate, commercial and industrial and real estate construction.
The accrual of interest on commercial loans and residential mortgage is discontinued at the time the loan is 90 days past due unless the credit is well-secured and in process of collection. Consumer loans, including home equity lines of credit, are typically charged off no later than 120 days past due. Past due status is based on the contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged off at an earlier date if collection of principal or interest is considered doubtful. Facts and circumstances can arise that cause a loan to be placed on nonaccrual if payment capacity is insufficient.
All interest accrued, but not collected, for loans that are placed on nonaccrual or charged off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual status. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Allowance for Credit Losses
Allowance for Credit Losses
As mentioned above, in 2023 the Corporation adopted CECL which replaced the incurred loss methodology. The measurement of expected credit losses under CECL is applicable to financial assets measured at amortized cost, including loans, HTM securities and purchased financial assets, held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. It also applies to OBS credit exposures, such as loan commitments, standby letters of credit, financial guarantees and other similar instruments. Financial institutions and other organizations will now use forecasted information to better inform their credit loss estimates. Many of the loss estimation techniques applied previously are still permitted, although the inputs to those techniques changed to reflect the full amount of expected credit losses.

The Corporation maintains an ACL at a level determined to be adequate to absorb expected credit losses associated with the Corporation’s financial instruments over the life of those instruments as of the balance sheet date. As part of its process of adopting CECL, management implemented a third-party software solution and determined appropriate loan segments, methodologies, model assumptions and qualitative components. The Corporation’s systematic ACL methodology is based on the following portfolio segments: Commercial Real Estate, Residential Mortgage, Commercial and Industrial, Home Equity Lines of Credit, Real Estate Construction and Consumer. The loan portfolio is segmented by loan types that have similar risk characteristics and types of collateral and that behave similarly during economic cycles. The calculation includes both a quantitative and qualitative component which incorporates the forecasting of certain economic variables. The Bank engaged a third-party to assist in developing the CECL model and to assist with evaluation of data and methodologies related to this standard. The Bank’s CECL Committee, which includes members from Credit Administration, Accounting/Finance, Risk Management and Internal Audit, has oversight by the Chief Executive Officer, Chief Financial Officer, and Chief Credit Officer. The Bank’s implementation plan also included the assessment and documentation of appropriate processes, policies and internal controls. Management had a third-party independent consultant review and validate the CECL model.

The ultimate impact of adopting Topic 326, and at each subsequent reporting period, is highly dependent on credit quality, macroeconomic forecasts and conditions, composition of the loans and securities portfolio, along with other management judgments. The Corporation adopted Topic 326 using the modified retrospective method.

The segmentation in the CECL model is different from the segmentation in the incurred loss model, however there was minimal impact on the presentation of the financial statement disclosures. The following is a discussion of the key risks by portfolio segment that management assesses in preparing the ACL.
Commercial Real Estate — The Corporation engages in commercial real estate lending in its primary market and surrounding areas. The portfolio is secured primarily by commercial retail space, office buildings, and hotels. Generally, commercial real
estate loans have terms that do not exceed 20 years, have loan-to-value ratios of up to 80% of the appraised value of the property, and are typically secured by personal guarantees of the borrowers.
In underwriting these loans, the Corporation performs a thorough analysis of the financial condition of the borrower, the borrower’s credit history, and the reliability and predictability of the cash flow generated by the property securing the loan. Appraisals on properties securing commercial real estate loans originated by the Corporation are performed by independent appraisers.
Commercial real estate loans generally present a higher level of risk than other types of loans due primarily to the effect of general economic conditions and the complexities involved in valuing the underlying collateral.
Residential Mortgage — One-to-four family residential mortgage loan originations, including home equity closed-end loans, are generated by the Corporation’s marketing efforts, its present customers, walk-in customers, and referrals. These loans originate primarily within the Corporation’s Market Area or with customers primarily from the Market Area.
The Corporation offers fixed-rate and adjustable-rate mortgage loans with terms up to a maximum of 30 years for both permanent structures and those under construction. The Corporation’s one-to-four family residential mortgage originations are secured primarily by properties located in its primary Market Area and surrounding areas. The majority of the Corporation’s residential mortgage loans originate with a loan-to-value of 80% or less. Loans in excess of 80% are required to have private mortgage insurance.
In underwriting one-to-four family residential real estate loans, the Corporation evaluates both the borrower’s financial ability to repay the loan as agreed and the value of the property securing the loan. Properties securing real estate loans made by the Corporation are appraised by independent appraisers. The Corporation generally requires borrowers to obtain an attorney’s title opinion or title insurance, as well as fire and property insurance (including flood insurance, if necessary) in an amount not less than the amount of the loan. The Corporation has not engaged in subprime residential mortgage originations.
Residential mortgage loans are subject to risk due primarily to general economic conditions, as well as periods of weak housing markets.
Commercial and Industrial — The Corporation originates commercial and industrial loans primarily to businesses located in its primary Market Area and surrounding areas. These loans are used for various business purposes which include short-term loans and lines of credit to finance machinery and equipment purchases, inventory, and accounts receivable. Generally, the maximum term for loans extended on machinery and equipment is based on the projected useful life of such machinery and equipment. Most business lines of credit are written on demand and may be renewed annually.
Commercial and industrial loans are generally secured with short-term assets; however, in many cases, additional collateral such as real estate is provided as additional security for the loan. Loan-to-value maximum values have been established by the Corporation and are specific to the type of collateral. Collateral values may be determined using invoices, inventory reports, accounts receivable aging reports, collateral appraisals, etc.
In underwriting commercial and industrial loans, an analysis is performed to evaluate the borrower’s capacity to repay the loan, the adequacy of the borrower’s capital and collateral, as well as the conditions affecting the borrower. Evaluation of the borrower’s past, present and future cash flows is also an important aspect of the Corporation’s analysis. Commercial loans generally present a higher level of risk than other types of loans due primarily to the effect of general economic conditions.
Home Equity Lines of Credit — The Corporation originates home equity lines of credit primarily within the Corporation’s Market Area or with customers primarily from the Market Area. Home equity lines of credit are generated by the Corporation’s marketing efforts, its present customers, walk-in customers, and referrals.
Home equity lines of credit are secured by the borrower’s primary residence with a maximum loan-to-value of 90% and a maximum term of 20 years. In underwriting home equity lines of credit, the Corporation evaluates both the value of the property securing the loan and the borrower’s financial ability to repay the loan as agreed. The ability to repay is determined by the borrower’s employment history, current financial condition, and credit background.
Home equity lines of credit generally present a moderate level of risk due primarily to general economic conditions, as well as periods of weak housing markets. Junior liens inherently have more credit risk by virtue of the fact that another financial institution may have a higher security position in the case of foreclosure liquidation of collateral to extinguish the debt. Generally, foreclosure actions could become more prevalent if the real estate markets are weak and property values deteriorate.
Real Estate Construction — The Corporation engages in real estate construction lending in its primary market and surrounding areas. The Corporation’s real estate construction lending consists of commercial and residential site development loans, as well as commercial building construction and residential housing construction loans. The Corporation’s real estate
construction loans are generally secured with the subject property. Terms of construction loans depend on the specifics of the project, such as estimated absorption rates, estimated time to complete, etc.
In underwriting real estate construction loans, the Corporation performs a thorough analysis of the financial condition of the borrower, the borrower’s credit history, and the reliability and predictability of the cash flow generated by the project using feasibility studies, market data, etc. Appraisals on properties securing real estate construction loans originated by the Corporation are performed by independent appraisers.
Real estate construction loans generally present a higher level of risk than other types of loans due primarily to the effect of general economic conditions and the uncertainties surrounding total construction costs.
Consumer — The Corporation offers a variety of secured and unsecured consumer loans, including those for vehicles and mobile homes and loans secured by savings deposits. These loans originate primarily within the Corporation’s Market Area or with customers primarily from the Market Area.
Consumer loan terms vary according to the type and value of collateral and the creditworthiness of the borrower. In underwriting consumer loans, a thorough analysis of the borrower’s financial ability to repay the loan as agreed is performed. The ability to repay is determined by the borrower’s employment history, current financial condition, and credit background.
Consumer loans may entail greater credit risk than residential mortgage loans or home equity lines of credit, particularly in the case of consumer loans which are unsecured or are secured by rapidly depreciable assets such as automobiles or recreational equipment. In such cases, any repossessed collateral for a defaulted consumer loan may not provide an adequate source of repayment of the outstanding loan balance as a result of the greater likelihood of damage, loss or depreciation. In addition, consumer loan collections are dependent on the borrower’s continuing financial stability, and thus are more likely to be affected by adverse personal circumstances. Furthermore, the application of various federal and state laws, including bankruptcy and insolvency laws, may limit the amount which can be recovered on such loans.
The adoption of Topic 326 resulted in a Day 1 adjustment of $3.3 million, including an increase to the ACL of $1.6 million and a $1.6 million reserve on unfunded loan commitments recorded in the liabilities section on the Consolidated Statements of Condition on January 1, 2023. As of January 1, 2023, the Corporation recorded a cumulative effect adjustment of $2.4 million to decrease retained earnings related to the adoption of Topic 326. Upon CECL adoption, the Corporation elected to implement the regulatory agencies’ capital transition relief over the permissible three-year period. The following table illustrates the impact of Topic 326:
January 1, 2023
(In thousands)Pre Topic 326As Reported Under Topic 326Impact of Topic 326 Adoption
Allowance for Credit Losses on Loans:
   Commercial and industrial$(2,848)$(2,086)$762 
   Commercial real estate(10,016)(11,122)(1,106)
   Real estate construction(1,000)(2,347)(1,347)
   Residential mortgage(3,029)(3,326)(297)
   Home equity lines of credit(347)(364)(17)
   Consumer(376)(234)142 
Unallocated(245)— 245 
Allowance for credit losses on loans$(17,861)$(19,479)$(1,618)
Assets:
Total Loans, net of allowance for credit losses$1,520,749 $1,519,131 $1,618 
   Net deferred tax asset17,718 18,452 734 
Liabilities:
   Allowance for unfunded commitments92 1,735 1,643 
Equity:
   Retained earnings245,042 242,674 2,368 
The ACL represents an amount which, in management’s judgment, is adequate to absorb expected losses on outstanding loans at the balance sheet date based on the evaluation of the size and current risk characteristics of the loan portfolio, past events,
current conditions, reasonable and supportable forecasts of future economic conditions and prepayment experience. The ACL is measured and recorded upon the initial recognition of a financial asset. The ACL is reduced by charge-offs, net of recoveries of previous losses, and is increased or decreased by a provision for credit losses, which is recorded as a current period operating expense.

The adoption of CECL did not result in a significant change to any other credit risk management and monitoring processes, including identification of past due or delinquent borrowers, nonaccrual practices or charge-off policies.
The Corporation’s methodology for estimating the ACL includes:
Segmentation — The Corporation’s loan portfolio is segmented by loan types that have similar risk characteristics and types of collateral and behave similarly during economic cycles.
Specific Analysis — A specific reserve analysis is applied to certain individually evaluated loans. These loans are evaluated quarterly generally based on collateral value, observable market value or the present value of expected future cash flows. A specific reserve is established if the fair value is less than the loan balance. A charge-off is recognized when the loss is quantifiable.
Quantitative Analysis — The Corporation elected to use DCF and chose unemployment rate as the driving factor of their economic forecasts. In regards to unemployment rates, the Corporation elected to forecast economic factors over the period of the next four quarters. The Corporation chose not to extend beyond four quarters given the inherent risks associated with forecasting. The Corporation utilizes relevant third-party forecasts as a basis and support for its own forecast. These forecasts are assumed to revert to the long-term average and utilized in the model to estimate the PD and LGD through regression. The Corporation elected a reversion period of four quarters. The Corporation deemed four quarters to be a reasonable time period to ensure it did not include irrelevant information, but also not too short to introduce unnecessary volatility. Model assumptions include, but are not limited to, the discount rate, prepayment speeds, funding rates, PD, LGD and curtailments. The product of the PD and the LGD is the estimated loss rate, which varies over time. The estimated loss rate is applied within the appropriate periods in the cash flow model to determine the net present value. Net present value is also impacted by assumptions related to the duration between default and recovery. The reserve is based on the difference between the summation of the principal balances taking amortized costs into consideration and the summation of the net present values.
Qualitative Analysis — Based on management’s review and analysis of internal, external and model risks, management may adjust the model output. Management reviews the peaks and troughs of the model’s calibration, considering economic forecasts to develop guardrails that serve as the basis for determining the reasonableness of the model’s output and makes adjustments as necessary. This process challenges unexpected variability resulting from outputs beyond the model’s calibration that appear to be unreasonable. Additionally, management may adjust the economic forecast if it is incompatible with known market conditions based on management’s experience and perspective.
Credit Quality Indicators
The Corporation’s portfolio risk rating analysis estimates the capability of the borrower to repay the contractual obligations of the loan agreements as scheduled or at all. The Corporation’s internal credit risk rating system is based on debt service coverage, collateral values and other subjective factors. Non-commercial-purpose loans are defaulted to a performing classification until a loan migrates to past due status.
Special Mention — Considered “Other Assets Especially Mentioned” these loans are currently protected, but are potentially weak. Loans in this rating category constitute an undue and unwarranted credit risk, but not to the point of justifying a classification of substandard. The credit risk may be relatively minor, yet constitutes an unwarranted risk in light of the circumstances surrounding a specific loan.
Substandard — Loans in this category are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual loans classified as substandard.
Doubtful — Loans in this category have all the weaknesses inherent in one classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The possibility of loss is extremely high, but because of certain important and reasonable specific pending factors which may work to strengthen the credit, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and refinancing plans.
Loss — Loans classified as a loss are considered uncollectible and are charged to the ACL.
Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass-rated loans.
In addition, federal and state regulatory agencies, as an integral part of their examination process, periodically review the Corporation’s ACL and may require the Corporation to recognize additions to the allowance based on their judgments about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio and economic conditions, management believes the current level of the allowance for credit losses is adequate.
Concentrations of Credit Risk
Concentration of Credit Risk
Most of the Corporation’s lending activities are with customers located within southcentral Pennsylvania and northern Maryland. The types of lending in which the Corporation engages are outlined above. The Corporation’s exposure to credit risk is significantly affected by changes in the economy in those areas. Although the Company maintains a diversified loan portfolio, a significant portion of its customers’ ability to honor their contracts is dependent upon economic sectors for commercial real estate, including mixed use properties, office complexes, hospitality, multi-family and residential complexes and agriculture. Management evaluates each clients' creditworthiness on an individual basis.
Collateral-Dependent Loans
Collateral-Dependent Loans
A loan is considered to be collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For all classes of loans deemed collateral-dependent, the Corporation elected the practical expedient to estimate expected credit losses based on the collateral’s fair value less cost to sell. In most cases, the Corporation records a partial charge-off to reduce the collateral-dependent loan’s carrying value to the fair value of the collateral less cost to sell. Substantially all of the collateral supporting collateral-dependent loans consists of various types of real estate, including residential properties, commercial properties, such as retail centers, office buildings, and lodging, agriculture land, and vacant land. Changes in the fair value of the collateral for individually evaluated loans are reported as provision for credit losses or a reversal of provision for credit losses in the period of change.
Acquired Loans
Acquired Loans
Under CECL acquired loans or pools of loans that have experienced more-than-insignificant credit deterioration are deemed to be PCD loans, and are grossed-up on day 1 by the initial credit estimate through the ACL as opposed to a reduction in the loan’s amortized cost. The credit mark on acquired loans deemed not to be PCD loans are reflected as a reduction in the loan’s amortized cost, with an ACL and corresponding provision for credit losses recorded in the first reporting period after acquisition through current period earnings, while the net loan mark will amortize through interest income over the life of such loans. At acquisition ACNB will consider several factors as indicators that an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors may include, but are not limited to, loans 30 days or more past due, loans with an internal risk grade of below average or lower, or loans classified as non-accrual. Upon the adoption of CECL acquired loans from prior acquisitions that met the guidelines under ASC 310-30 (formerly known as “purchased credit-impaired”) were reclassified as PCD loans. The accretable portion of the loan mark as of adoption date continues to accrete into interest income. However, the non-accretable portion of the loan mark was added to the ACL upon adoption, and any reversals of such mark will flow through the ACL in future periods.
Transfers of Financial Assets
Transfers of Financial Assets
Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Corporation, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Corporation does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
Premises and Equipment
Premises and Equipment
Land is carried at cost. Buildings, furniture, fixtures, equipment and leasehold improvements are carried at cost, less accumulated depreciation. Depreciation is computed principally by the straight-line method over the assets’ estimated useful lives. Normally, a building’s useful life is 40 years, except for building remodels and additions, which are depreciated over fifteen years. Bank equipment, including furniture and fixtures, is normally depreciated over three - fifteen years depending upon the nature of the purchase. Maintenance and normal repairs are charged to expense when incurred while major additions
and improvements are capitalized. Gains and losses on disposals are reflected in current operations. Amortization of leasehold improvements is computed by straight line over the shorter of the assets’ useful life or the related lease term.
Leases
Leases
All leases with an initial term greater than 12 months recognize: (1) a ROU asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term; and (2) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, each measured on a discounted basis.
As a lessee, the majority of the operating lease portfolio consists of real estate leases for the Bank’s community banking offices. The operating leases have remaining lease terms of less than one year to less than twelve years, some of which include options to renew at varying durations.
Restricted Investment in Bank Stocks
Restricted Investment in Bank Stocks
Restricted investment in bank stocks, which represents required investments in the common stock of correspondent banks, is carried at cost as of December 31, 2024 and 2023, and consists of common stock in the Atlantic Community Bankers Bank, Community Bankers Bank and Federal Home Loan Bank.
Management believes no impairment charge was necessary related to the restricted investment in bank stocks during 2024, 2023 or 2022.
Bank-Owned Life Insurance
Bank-Owned Life Insurance
The Corporation’s banking subsidiary maintains nonqualified compensation plans for selected senior officers. To fund the benefits under these plans, the Bank is the owner of single premium life insurance policies on participants in the nonqualified retirement plans. Investment in bank-owned life insurance policies was used to finance the nonqualified compensation plans and provide tax-exempt income to the Corporation.
ASC Topic 715, Compensation—Retirement Benefits, requires a liability to be recorded during the service period when a split-dollar life insurance agreement continues after participants’ employment or retirement. The required accrued liability is based on either the post-employment benefit cost for continuing life insurance or based on the future death benefit depending on the contractual terms of the underlying agreement. The Corporation’s liability is based on the post-employment benefit cost for continuing life insurance.
Investments in Low-Income Housing Partnerships
Investments in Low-Income Housing Partnerships
The Corporation’s investments in low-income housing partnerships are accounted for using the “equity method” prescribed by ASC Topic 323, Investments—Equity Method. In accordance with ASC Topic 740, Income Taxes, tax credits are recognized as they become available. Any residual loss is amortized as the tax credits are received.
Goodwill and Intangible Assets
Goodwill and Intangible Assets
The Corporation accounts for its acquisitions using the acquisition accounting method required by ASC Topic 805, Business Combinations. Acquisition accounting requires the total purchase price to be allocated to the estimated fair values of assets and liabilities acquired, including certain intangible assets that must be recognized. Generally, this results in a residual amount in excess of the net fair values, which is recorded as goodwill.
Goodwill represents the excess of the cost of an acquisition over the fair value of the net assets acquired. ASC Topic 350, Intangibles—Goodwill and Other, requires that goodwill is not amortized to expense, but rather that it be assessed or tested for impairment at least annually. If certain events occur which might indicate goodwill has been impaired, the goodwill is tested for impairment when such events occur. Impairment write-downs are charged to results of operations in the period in which the impairment is determined. The Corporation did not identify any impairment on the Bank’s or ACNB Insurance Services’ outstanding goodwill from its most recent goodwill impairment analysis which was completed as of November 30, 2024 using the qualitative approach. If certain events occur which indicate goodwill might be impaired between annual assessments, the goodwill would be evaluated for impairment when such events occur.
Other intangible assets represent purchased assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights. These assets that have finite lives, such as core deposit intangibles, customer lists and non-compete covenants, are amortized over their estimated useful lives and subject to periodic impairment testing. Core deposit intangibles are primarily amortized over ten years using accelerated methods. Customer lists are amortized using the straight line method over their estimated useful lives which range from eight to fifteen years. Non-compete covenants are amortized
using the straight line method over the term of the agreement.
The fair value of customer lists intangibles was based upon an income approach which included estimated financial projections developed by the Corporation and included other fair value assumptions for attrition, present value discount rates using market participant assumptions. The fair value of the non-compete covenants intangible was based upon an income approach which compared the present value impact of various non-compete scenarios and other fair value assumptions including present value discount rates using market participant assumptions.
Foreclosed Assets
Foreclosed Assets
Assets acquired through, or in lieu of, loan foreclosure are held for sale and are initially recorded at fair value, less costs to sell at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, valuations are periodically performed by management and the assets are adjusted to the fair value, less costs to sell as necessary. Revenue and expenses from operations and changes in the valuation allowance are included in net expenses from foreclosed assets.
Income Taxes
Income Taxes
The Corporation accounts for income taxes in accordance with income tax accounting guidance ASC Topic 740, Income Taxes.
Current income tax accounting guidance results in two components of income tax expense, current and deferred. Current income tax expense reflects taxes to be paid or refunded for the current period by applying the provisions of the enacted tax law to the taxable income or excess of deductions over revenues. The Corporation determines deferred income taxes using the liability (or balance sheet) method. Under this method, the net deferred tax asset or liability is based on the tax effects of the differences between the book and tax bases of assets and liabilities, and enacted changes in tax rates and laws are recognized in the period in which they occur.
Deferred income tax expense results from changes in deferred tax assets and liabilities between periods. Deferred tax assets are reduced by a valuation allowance if, based on the weight of the evidence available, it is more likely than not that some portion or all of a deferred tax asset will not be realized.
The Corporation accounts for uncertain tax positions if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more-likely-than-not means a likelihood of more than 50%; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more-likely-than-not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information. The determination of whether or not a tax position has met the more-likely-than-not recognition threshold considers the facts, circumstances, and information available at the reporting date and is subject to management’s judgment.
The Corporation recognizes interest and penalties on income taxes, if any, as a component of income tax expense.
Retirement Plan
Defined Benefit Pension Plan
Net periodic pension costs are funded based on the requirements of federal laws and regulations. The determination of net periodic pension costs is based on assumptions about future events that will affect the amount and timing of required benefit payments under the plan. These assumptions include demographic assumptions such as retirement age and mortality, a discount rate used to determine the current benefit obligation, form of payment election and a long-term expected rate of return on plan assets. Net periodic pension expense includes interest cost, based on the assumed discount rate, an expected return on plan assets, amortization of prior service cost or credit and amortization of net actuarial gains or losses. Pension expense is the net of service and interest cost, return on plan assets and amortization of gains and losses not immediately recognized.
Stock-based Compensation
Stock-based Compensation
On May 1, 2018, stockholders approved and ratified the ACNB Corporation 2018 Omnibus Stock Incentive Plan, effective as of March 20, 2018, in which awards shall not exceed, in the aggregate, 400,000 shares of common stock, plus any shares that are authorized, but not issued, under the ACNB Corporation 2009 Restricted Stock Plan. The ACNB Corporation 2009 Restricted Stock Plan expired by its own terms after 10 years on February 24, 2019. No further shares may be issued under this plan. The remaining 174,055 shares were transferred to the ACNB Corporation 2018 Omnibus Stock Incentive Plan.
Stock-based compensation awards granted, comprised of time-based restricted stock awards, are valued at fair value on the date of grant and compensation expense is recognized on a straight-line basis over the requisite service period of each award. The Company recognizes forfeitures as they occur.
Advertising Costs
Advertising Costs
Costs of advertising, which are included in other expenses, are expensed when incurred.
Off-Balance Sheet Credit-Related Financial Instruments
Off-Balance Sheet Credit-Related Financial Instruments
In the ordinary course of business, the Corporation has entered into commitments to extend credit, including commitments under commercial lines of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.
Loss Contingencies
Loss Contingencies
Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are such matters that will have a material effect on the financial statements.
Restrictions on Cash
Restrictions on Cash
Cash on hand or on deposit with the Federal Reserve Bank was required to meet regulatory reserve and clearing requirements.
Dividend Restriction
Dividend Restriction
Pursuant to the Pennsylvania Banking Code of 1965, as amended, and the regulations of the FDIC, the Bank is required to maintain certain capital levels and is restricted in the dividends that may be paid by the bank to the holding company. In addition, pursuant to the Pennsylvania Business Corporation Law, as amended, and the rules and regulations of the Board of Governors of the Federal Reserve System, the holding company is subject to restrictions on dividends that the holding company may pay to stockholders.
Fair Value of Financial Instruments
Fair Value of Financial Instruments
Fair values of financial instruments are estimated using relevant market information and other assumptions. Fair value estimates involve uncertainties and matters of significant judgement regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect these estimates.
Revenue Recognition
Revenue Recognition
ACNB generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is little judgment involved that significantly affects the determination of the amount and timing of revenue from contracts with customers. The sources of revenue for ACNB are interest income from loans and investments and noninterest income. Noninterest income is earned from various banking and financial services that ACNB offers through its subsidiaries.
Insurance Commissions — Commission income is earned based on customers transactions. The commission income is recognized when the transaction is complete.
Wealth Management — The Bank provides wealth management services under the umbrella of ACNB Wealth Management which includes trust and investment services and wealth advisory services. The trust and investment group provides a wide range of financial services, including trust administration and estate settlement services, and investment management for individuals, businesses and non-profit entities. Other services include, but are not limited to, those related to testamentary trusts, life insurance trusts, charitable remainder trusts, guardianships, power of attorney, custodial accounts and investment management and advisory accounts. In addition, ACNB Wealth Management offers retail brokerage-services through a networking agreement with a third-party provider. ACNB Wealth Management clients are located primarily within the Corporation’s Market Area.
The majority of trust and investment services revenue is earned and collected monthly, with the amount determined based on the market value of assets in each account multiplied by a fee schedule for that account. Each account has one integrated set of performance obligations so no allocation is required. The performance obligation is met by performing the identified fiduciary service, investment management service, or custodial service. Successful performance is confirmed by ongoing internal and regulatory control, measurement is by valuing the account assets at month-end to which a fee schedule is applied. Trust and
investment services fees are contractually agreed upon with each client in instances where the client has control over the assets, and fee levels vary based mainly on the size of assets under management. Fees for trust administration or estate settlement are assessed based on the permissions granted within each governing document and in accordance with state law; estate settlement fees are generally assessed at the conclusion of estate administration.
The wealth advisory revenue is predominantly realized through commissions generated from client transactions. Commission income is recognized when the transaction is completed, and may be paid as a single upfront payment, or as recurring income in the form of trailing commissions. A small portion of the overall revenue is derived from fee-based advisory relationships; contractually agreed upon fees are assessed based on the market value of assets in the account. Net revenue based on the terms of the networking agreement are received on a monthly basis.
Service charges on deposit accounts — Deposits are included as liabilities in the Statement of Condition. Service charges on deposit accounts include: overdraft fees; ATM fees charged for withdrawals by deposit customers from other financial institutions’ ATMs; and a variety of other monthly or transactional fees for services provided to retail and business customers, mainly associated with checking accounts. All deposit liabilities are considered to have one-day terms and therefore related fees are recognized in income at the time when the services are provided to the customers.
ATM debit card charges — The Bank issues debit cards to consumer and business customers with checking, savings or money market deposit accounts. Debit card and ATM transactions are processed via electronic systems that involve several parties. The Corporation’s debit card and ATM transaction processing is executed via contractual arrangements with payment processing networks, a processor and a settlement bank. As described above, all deposit liabilities are considered to have one-day terms and therefore interchange revenue from customers’ use of their debit cards to initiate transactions are recognized in income at the time when the services are provided and related fees received in the Corporation’s deposit account with the settlement bank.
Other — Consists of safe deposit rental income, money order fees, check cashing and cashiers’ check fees, wire transfer fees, letter of credit fees, check order income, and other miscellaneous fees. These fees are largely transaction-based; therefore, the Corporation’s performance obligation is satisfied and the resultant revenue is recognized at the point in time the service is rendered. Payments for transaction-based fees are generally received immediately or in the following month by a direct charge to a customer’s account.
Segment Reporting
Segment Reporting
The Corporation evaluates and monitors the revenue streams of its various products and services and manages operations and financial performance on a consolidated basis. The Bank offers banking and wealth management services, including trust and retail brokerage. ACNB Insurance Services offers a broad range of property and casualty, life and health insurance to both commercial and consumer clients. Segment determination considers organizational structure and is consistent with the presentation of financial information to the CODM to evaluate segment performance, develop strategy, and allocate resources. Management has determined that the Corporation has two reportable segments consisting of Banking and Insurance. The President and CEO of ACNB Corporation is the CODM for both the Bank and the Corporation’s wholly-owned insurance subsidiary.
New Accounting Pronouncements Accounting Standards
In December 2022, the FASB issued ASU 2022-06, “Deferral of the Sunset Date of Reference Rate Reform (Topic 848)”. This ASU extends the sunset date of ASC Topic 848 (Reference Rate Reform) to December 31, 2024, in response to the United Kingdom’s Financial Conduct Authority (FCA) extension of the intended cessation date of LIBOR in the United States. The standard became effective for the Corporation upon issuance and its adoption did not have a material impact on its Consolidated Financial Statements.
In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280)”. The amendments in this ASU are expected to improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more decision-useful financial analyses. The amendments of ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-07 should be applied retrospectively to all periods presented on the financial statements. The Corporation adopted the amendments of ASU 2023-07 related to annual disclosure requirements effective January 1, 2024. Adoption of this standard did not have a material impact on the Corporation’s Consolidated Financial Statements.
Accounting Standards Pending Adoption
In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740)”. This ASU is intended to improve the disclosures for income taxes to address requests from investors, lenders, creditors and other allocators of capital that use the financial statements to make capital allocation decisions. The amendments in ASU 2023-09 will require consistent categories and greater disaggregation of information in the rate reconciliation disclosure as well as disclosure of income taxes paid disaggregated by jurisdiction. The amendments of ASU 2023-09 are effective for annual periods beginning after December 15, 2024, and early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The Corporation intends to adopt the amendments of ASU 2023-09 effective January 1, 2025, and will include the required disclosures in its Annual Report on Form 10-K for the year ending December 31, 2025. The Corporation is currently evaluating the impact of this standard, and believes that its adoption will not have a material impact on the Corporation’s Consolidated Financial Statements.
In November 2024, the FASB issued ASU 2024-03, “Disaggregation of Income Statement Expenses (Subtopic 220-40)”. This ASU is intended to improve the decision usefulness of expense information on public business entities’ income statements through the disaggregation of relevant expense captions in the notes to the financial statements. The amendments of ASU 2024-03 are effective for annual periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027, and early adoption is permitted. The Corporation is currently evaluating the impact of this standard, and believes that its adoption will not have a material impact on the Corporation’s Consolidated Financial Statements.
v3.25.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Schedule of the Impact of Topic 326 The following table illustrates the impact of Topic 326:
January 1, 2023
(In thousands)Pre Topic 326As Reported Under Topic 326Impact of Topic 326 Adoption
Allowance for Credit Losses on Loans:
   Commercial and industrial$(2,848)$(2,086)$762 
   Commercial real estate(10,016)(11,122)(1,106)
   Real estate construction(1,000)(2,347)(1,347)
   Residential mortgage(3,029)(3,326)(297)
   Home equity lines of credit(347)(364)(17)
   Consumer(376)(234)142 
Unallocated(245)— 245 
Allowance for credit losses on loans$(17,861)$(19,479)$(1,618)
Assets:
Total Loans, net of allowance for credit losses$1,520,749 $1,519,131 $1,618 
   Net deferred tax asset17,718 18,452 734 
Liabilities:
   Allowance for unfunded commitments92 1,735 1,643 
Equity:
   Retained earnings245,042 242,674 2,368 
v3.25.0.1
INVESTMENT SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Unrealized Gain (Loss) on Investments
Fair value of equity securities with readily determinable fair values at December 31 are as follows:
(In thousands)Fair Value at January 1PurchasesSales/reclassification(Losses)/GainsLosses on sales of securitiesFair Value at December 31
2024
CRA Mutual Fund$928 $— $— $(9)$— $919 
2023
CRA Mutual Fund$915 $— $— $13 $— $928 
Canapi Ventures SBIC Fund206 — 206 — — — 
Stock in other banks598 — 592 5 (11)— 
Total$1,719 $— $798 $18 $(11)$928 
2022
CRA Mutual Fund$1,036 $— $— $(121)$— $915 
Canapi Ventures SBIC Fund— 206 — — — 206 
Stock in other banks1,573 — 811 (177)13 598 
Total$2,609 $206 $811 $(298)$13 $1,719 
Amortized cost and fair value of investment securities were as follows:
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
December 31, 2024    
Available for Sale    
U.S. Government and agencies$159,799 $— $16,606 $143,193 
Collateralized mortgage obligations39,540 — 3,886 35,654 
Residential mortgage-backed securities159,349 2 20,811 138,540 
Commercial mortgage-backed securities65,350 — 4,565 60,785 
Corporate bonds17,600 — 1,797 15,803 
Total$441,638 $2 $47,665 $393,975 
Held to Maturity
State and municipal$62,838 $— $7,586 $55,252 
Residential mortgage-backed securities1,740 — 68 1,672 
Total$64,578 $— $7,654 $56,924 
December 31, 2023
Available for Sale
U.S. Government and agencies$176,458 $— $19,663 $156,795 
Collateralized mortgage obligations45,189 — 4,105 41,084 
Residential mortgage-backed securities178,441 19 19,630 158,830 
Commercial mortgage-backed securities69,498 344 4,552 65,290 
Corporate bonds32,326 202 2,834 29,694 
Total$501,912 $565 $50,784 $451,693 
Held to Maturity    
State and municipal$62,133 $— $5,419 $56,714 
Residential mortgage-backed securities2,467 — 124 2,343 
Total$64,600 $— $5,543 $59,057 
Schedule of Unrealized Loss on Investments
The following table shows the Corporation’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2024 and 2023:
 Less than 12 Months12 Months or MoreTotal
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
December 31, 2024      
Available for Sale      
U.S. Government and agencies$— $— $143,193 $16,606 $143,193 $16,606 
Collateralized mortgage obligations— — 35,654 3,886 35,654 3,886 
Residential mortgage-backed securities2,692 26 135,626 20,785 138,318 20,811 
Commercial mortgage-backed securities31,860 73 28,925 4,492 60,785 4,565 
Corporate bonds— — 15,803 1,797 15,803 1,797 
Total$34,552 $99 $359,201 $47,566 $393,753 $47,665 
Held to Maturity
State and municipal$— $— $55,252 $7,586 $55,252 $7,586 
Residential mortgage-backed securities— — 1,672 68 1,672 68 
Total$— $— $56,924 $7,654 $56,924 $7,654 
December 31, 2023      
Available for Sale
U.S. Government and agencies$— $— $156,795 $19,663 $156,795 $19,663 
Collateralized mortgage obligations— — 41,085 4,104 41,085 4,104 
Residential mortgage-backed securities— — 156,295 19,630 156,295 19,630 
Commercial mortgage-backed securities— — 33,063 4,553 33,063 4,553 
Corporate bonds— — 15,279 2,834 15,279 2,834 
Total$— $— $402,517 $50,784 $402,517 $50,784 
Held to Maturity
State and municipal$— $— $56,714 $5,419 $56,714 $5,419 
Residential mortgage-backed securities— — 2,343 124 2,343 124 
Total$— $— $59,057 $5,543 $59,057 $5,543 
Investments Classified by Contractual Maturity Date
Amortized cost and fair value at December 31, 2024, by contractual maturity, where applicable, are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay with or without penalties.
 Available for SaleHeld to Maturity
(In thousands)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
1 year or less$18,009 $17,592 $— $— 
Over 1 year through 5 years102,083 93,188 4,188 3,735 
Over 5 years through 10 years55,307 46,670 27,266 25,927 
Over 10 years2,000 1,546 31,384 25,590 
Mortgage-backed securities264,239 234,979 1,740 1,672 
$441,638 $393,975 $64,578 $56,924 
Gain (Loss) on Securities
The proceeds from sales and calls of securities and the associated gains and losses are listed below:
Years Ended December 31,
(In thousands)202420232022
Proceeds from sales$14,336 $125,241 $4,994 
Proceeds from calls1,984 — — 
Gross gains87 230 14 
Gross losses18 5,470 248 
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)
 12 Months Ended
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable
The following table presents the composition of the loan portfolio:
(In thousands)December 31, 2024December 31, 2023
Commercial real estate$969,514 $898,709 
Residential mortgage401,950 394,189 
Commercial and industrial140,906 152,344 
Home equity lines of credit85,685 90,163 
Real estate construction76,773 84,341 
Consumer9,318 9,954 
Gross loans1,684,146 1,629,700 
Unearned income(1,236)(1,712)
Total loans, net of unearned income$1,682,910 $1,627,988 
Financing Receivable, Related Party The following table is a summary of the activity for these related-party loans:
(In thousands)2024
Balance at January 1$5,307 
Repayments548 
Balance at December 31$4,759 
Loan Portfolio Summarized By The Past Due Status The following tables present the classes of the loan portfolio summarized by the past due status:
(In thousands)30–59 Days Past Due60–89 Days
Past Due		≥ 90 Days
Past Due		Total Past
Due		CurrentTotal Loans
Receivable		Loans
Receivable
≥ 90 Days
and
Accruing
December 31, 2024
Commercial real estate$763 $527 $314 $1,604 $967,910 $969,514 $— 
Residential mortgage953 987 850 2,790 399,160 401,950 850 
Commercial and industrial437 24 155 616 140,290 140,906 — 
Home equity lines of credit161 — 91 252 85,433 85,685 91 
Real estate construction15 11 — 26 76,747 76,773 — 
Consumer47 18 — 65 9,253 9,318 — 
Total Loans$2,376 $1,567 $1,410 $5,353 $1,678,793 $1,684,146 $941 
December 31, 2023
Commercial real estate$150 $347 $— $497 $898,212 $898,709 $— 
Residential mortgage1,293 388 849 2,530 391,659 394,189 505 
Commercial and industrial50 — 159 209 152,135 152,344 — 
Home equity lines of credit414 — 654 1,068 89,095 90,163 654 
Real estate construction12 — — 12 84,329 84,341 — 
Consumer8 — 3 11 9,943 9,954 3 
Total Loans$1,927 $735 $1,665 $4,327 $1,625,373 $1,629,700 $1,162 
Nonaccrual Loans By Classes Of The Loan Portfolio
Loans individually evaluated consist of nonaccrual loans, presented in the following table: 
December 31, 2024December 31, 2023
(In thousands)With a Related AllowanceWithout a Related AllowanceTotalWith a Related AllowanceWithout a Related AllowanceTotal
Commercial real estate$314 $3,250 $3,564 $315 $1,164 $1,479 
Residential mortgage— — — — 343 343 
Commercial and industrial2,081 226 2,307 1,004 — 1,004 
Home equity lines of credit— — — — 185 185 
 Total$2,395 $3,476 $5,871 $1,319 $1,692 $3,011 
Schedule of Nonperforming Loans
Total nonperforming loans at December 31 are as follows:
(In thousands)20242023
Nonaccrual loans$5,871 $3,011 
Greater than or equal to 90 days past due and accruing941 1,162 
Total nonperforming loans$6,812 $4,173 
Financing Receivable, Amortized Cost Basis
The amortized cost basis of individually evaluated loans by type of collateral as of December 31:
20242023
(In thousands)Business AssetsReal EstateBusiness AssetsReal Estate
Commercial real estate$— $3,564 $— $1,479 
Residential mortgage— — — 343 
Commercial and industrial2,307 — 1,004 — 
Home equity lines of credit— — — 185 
Total$2,307 $3,564 $1,004 $2,007 
Schedule of actual loan modifications
The following tables present the amortized cost basis of loans that were both experiencing financial difficulty and modified during the years ended December 31, 2024 and 2023, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financing receivable is also presented below:
(In thousands)Combination Payment Deferral and Interest-Only PaymentsPercent of Class of Financing Receivable
2024
Commercial real estate$2,293 0.2 %
Commercial and industrial1,748 1.2 %
Total$4,041 
The loan modifications made during 2024 did not result in term extensions.
(In thousands)Term ExtensionPercent of Class of Financing ReceivableFinancial Effect
2023
Commercial and industrial$549 0.4 %
Added a weighted-average 4.95 years to the life of loans, which decreased the borrower’s monthly payment amounts.

The following presents the performance of loans modified in the previous twelve months as of December 31, 2024:
(In thousands)Current30-89 Days Past Due≥ 90 Days Past DueTotal Past Due
Commercial real estate$2,293 $— $— $— 
Commercial and industrial1,748 — — — 
Total$4,041 $— $— $— 
Classes Of The Loan Portfolio Summarized By The Aggregate Risk Rating
The following summarizes designated internal risk categories by portfolio segment for loans assigned a risk rating and those evaluated based on the performance status:
December 31, 2024
Term Loans Amortized Cost Basis by Origination YearRevolving Loans Amortized Cost BasisTotal
(In thousands)20242023202220212020Prior
Internally Risk Rated:
Commercial real estate
Pass$120,989 $135,995 $164,167 $121,092 $55,408 $312,999 $17,276 $927,926 
Special Mention1,887 3,826 2,880 6,639 2,177 11,613 1,303 30,325 
Substandard— — 2,332 342 1,485 7,059 45 11,263 
Total Commercial real estate$122,876 $139,821 $169,379 $128,073 $59,070 $331,671 $18,624 $969,514 
Residential mortgage
Pass$27,887 $35,566 $23,095 $38,848 $13,446 $31,784 $466 $171,092 
Special Mention130 1,692 167 146 366 3,246 115 5,862 
Substandard— 237 188 — — 68 — 493 
Total Residential Mortgage$28,017 $37,495 $23,450 $38,994 $13,812 $35,098 $581 $177,447 
Commercial and industrial
Pass$10,000 $10,067 $19,584 $29,673 $13,162 $18,976 $30,015 $131,477 
Special Mention165 109 246 192 78 459 2,554 3,803 
Substandard— 526 468 335 2 979 3,316 5,626 
Total Commercial and industrial$10,165 $10,702 $20,298 $30,200 $13,242 $20,414 $35,885 $140,906 
Year-to-date gross charge-offs$— $38 $— $— $— $100 $— $138 
Home equity lines of credit
Pass$— $294 $92 $— $— $501 $5,729 $6,616 
Special Mention— — — — — — 696 696 
Substandard— — — — — 6 — 6 
Total Home equity lines of credit$— $294 $92 $— $— $507 $6,425 $7,318 
Real estate construction
Pass$21,227 $24,463 $7,719 $1,209 $298 $1,060 $6,086 $62,062 
Special Mention— 168 5,100 — — 667 45 5,980 
Substandard— — — — — 62 — 62 
Total Real estate construction$21,227 $24,631 $12,819 $1,209 $298 $1,789 $6,131 $68,104 
Performance Rated:
Residential mortgage
Performing$14,786 $41,275 $39,943 $13,523 $13,876 $100,601 $72 $224,076 
Nonperforming— — — — — 427 — 427 
Total Residential Mortgage$14,786 $41,275 $39,943 $13,523 $13,876 $101,028 $72 $224,503 
Home equity lines of credit
Performing$— $18 $34 $— $12 $2,591 $75,621 $78,276 
Nonperforming— — — — — — 91 91 
Total Home equity lines of credit$— $18 $34 $— $12 $2,591 $75,712 $78,367 
Real estate construction
Performing$6,486 $222 $725 $160 $188 $888 $— $8,669 
Total Real estate construction$6,486 $222 $725 $160 $188 $888 $— $8,669 
Consumer
Performing$2,000 $1,521 $1,694 $465 $276 $778 $2,584 $9,318 
Total Consumer$2,000 $1,521 $1,694 $465 $276 $778 $2,584 $9,318 
Year-to-date gross charge-offs$— $4 $9 $— $1 $7 $197 $218 
Total Portfolio loans
Pass$180,103 $206,385 $214,657 $190,822 $82,314 $365,320 $59,572 $1,299,173 
Special Mention2,182 5,795 8,393 6,977 2,621 15,985 4,713 46,666 
Substandard— 763 2,988 677 1,487 8,174 3,361 17,450 
Performing23,272 43,036 42,396 14,148 14,352 104,858 78,277 320,339 
Nonperforming— — — — — 427 91 518 
Total Portfolio loans$205,557 $255,979 $268,434 $212,624 $100,774 $494,764 $146,014 $1,684,146 
Year-to-date gross charge-offs$— $42 $9 $— $1 $107 $197 $356 
December 31, 2023
Term Loans Amortized Cost Basis by Origination YearRevolving Loans Amortized Cost Basis
(In thousands)20232022202120202019PriorTotal
Internally Risk Rated:
Commercial real estate
Pass$136,158 $152,767 $130,994 $60,918 $65,856 $287,026 $13,636 $847,355 
Special Mention1,927 6,385 5,920 1,904 8,222 16,244 1,994 42,596 
Substandard— — — 1,530 704 6,524 — 8,758 
Total Commercial real estate$138,085 $159,152 $136,914 $64,352 $74,782 $309,794 $15,630 $898,709 
Residential mortgage
Pass$39,146 $27,612 $41,031 $14,758 $10,492 $27,274 $402 $160,715 
Special Mention588 82 593 397 826 2,457 62 5,005 
Substandard— — — — — 218 — 218 
Total Residential Mortgage$39,734 $27,694 $41,624 $15,155 $11,318 $29,949 $464 $165,938 
Commercial and industrial
Pass$12,319 $24,259 $34,830 $15,614 $13,922 $17,780 $25,147 $143,871 
Special Mention128 303 290 529 140 459 2,014 3,863 
Substandard7 135 499 91 9 1,597 2,272 4,610 
Total Commercial and industrial$12,454 $24,697 $35,619 $16,234 $14,071 $19,836 $29,433 $152,344 
Year-to-date gross charge-offs$— $— $— $— $— $110 $— $110 
Home equity lines of credit
Pass$300 $99 $— $— $— $131 $5,235 $5,765 
Special Mention— — — — — — 727 727 
Substandard— — — — — 362 — 362 
Total Home equity lines of credit$300 $99 $— $— $— $493 $5,962 $6,854 
Real estate construction
Pass$19,766 $39,758 $3,953 $1,160 $— $2,604 $8,003 $75,244 
Special Mention— 465 — 92 — 725 — 1,282 
Substandard— — — — — 69 — 69 
Total Real estate construction$19,766 $40,223 $3,953 $1,252 $— $3,398 $8,003 $76,595 
Performance Rated:
Residential mortgage
Performing$33,884 $45,221 $14,878 $16,184 $9,059 $108,021 $156 $227,403 
Nonperforming— — — — — 848 — 848 
Total Residential Mortgage$33,884 $45,221 $14,878 $16,184 $9,059 $108,869 $156 $228,251 
Home equity lines of credit
Performing$23 $38 $— $13 $94 $4,742 $77,745 $82,655 
Nonperforming— — — — — 92 562 654 
Total Home equity lines of credit$23 $38 $— $13 $94 $4,834 $78,307 $83,309 
Real estate construction
Performing$5,571 $753 $175 $210 $170 $867 $— $7,746 
Total Real estate construction$5,571 $753 $175 $210 $170 $867 $— $7,746 
Consumer
Performing$2,351 $2,685 $778 $522 $271 $1,085 $2,259 $9,951 
Nonperforming— — — — — — 3 3 
Total Consumer$2,351 $2,685 $778 $522 $271 $1,085 $2,262 $9,954 
Year-to-date gross charge-offs$48 $83 $42 $55 $23 $78 $67 $396 
Total Portfolio loans
Pass$207,689 $244,495 $210,808 $92,450 $90,270 $334,815 $52,423 $1,232,950 
Special Mention2,643 7,235 6,803 2,922 9,188 19,885 4,797 53,473 
Substandard7 135 499 1,621 713 8,770 2,272 14,017 
Performing41,829 48,697 15,831 16,929 9,594 114,715 80,160 327,755 
Nonperforming— — — — — 940 565 1,505 
Total Portfolio loans$252,168 $300,562 $233,941 $113,922 $109,765 $479,125 $140,217 $1,629,700 
Year-to-date gross charge-offs$48 $83 $42 $55 $23 $188 $67 $506 
In 2024, the Corporation revised estimates utilized as input assumptions within the CECL model calculation. These estimates, which were based on more current information available during 2024, drive input assumptions which are used in the determination of the Corporation’s allowance for credit losses and the reserve for unfunded commitments. These updated estimates were the primary drivers for a $2.4 million and $326 thousand reversal of the provisions for credit losses and for unfunded commitments, respectively, for the year ended December 31, 2024.
Financing Receivable, Loan Portfolio Class
The following table presents the ACL by loan portfolio segment for the years ended 2024, 2023 and 2022:
(In thousands)Commercial
Real Estate		Residential MortgageCommercial and IndustrialHome Equity Lines of CreditReal Estate ConstructionConsumerUnallocatedTotal
Beginning balance - January 1, 2024$12,010 $3,303 $2,048 $397 $2,070 $141 $— $19,969 
Charge-offs— — (138)— — (218)— (356)
Recoveries— — 26 — — 78 — 104 
(Reversal of) provisions(1,432)(327)(520)(103)(152)97 — (2,437)
Ending balance - December 31, 2024$10,578 $2,976 $1,416 $294 $1,918 $98 $— $17,280 
Beginning balance - January 1, 2023$10,016 $3,029 $2,848 $347 $1,000 $376 $245 $17,861 
Impact of CECL adoption1,106 297 (762)17 1,347 (142)(245)1,618 
Charge-offs— — (110)— — (396)— (506)
Recoveries— — 64 — — 72 — 136 
Provisions (reversal of)888 (23)8 33 (277)231 — 860 
Ending balance - December 31, 2023$12,010 $3,303 $2,048 $397 $2,070 $141 $— $19,969 
Beginning balance - January 1, 2022$10,716 $3,235 $3,176 $501 $616 $408 $381 $19,033 
Charge-offs(831)(3)(238)(33)— (181)— (1,286)
Recoveries— 5 58 22 — 29 — 114 
Provisions (reversal of)131 (208)(148)(143)384 120 (136)— 
Ending balance - December 31, 2022$10,016 $3,029 $2,848 $347 $1,000 $376 $245 $17,861 
v3.25.0.1
PREMISES AND EQUIPMENT (Tables)
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Premises and equipment
Premises and equipment were as follows at December 31:
(In thousands)20242023
Land$5,418 $5,418 
Buildings and improvements33,390 33,249 
Furniture and equipment14,717 14,813 
Construction in process74 81 
Total premises and equipment53,599 53,561 
Accumulated depreciation(28,145)(27,278)
Premises and equipment, net$25,454 $26,283 
v3.25.0.1
LEASES (Tables)
 12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Supplemental Balance Sheet Information
The following ROU assets and lease liabilities are reported within the Consolidated Statements of Condition as follows:
(Dollars in thousands)December 31, 2024December 31, 2023
Operating Leases:
ROU assets$2,663 $2,615 
Lease liabilities2,764 2,615 
Weighted average remaining lease term5.7 years4.7 years
Weighted average discount rate2.63 %5.61 %
Supplemental cash flow information related to operating leases for the years ended December 31:
(In thousands)202420232022
Operating cash flows from operating leases$917 $924 $964 
Future Minimum Rental Payments
The following summarizes the remaining scheduled future minimum lease payments for operating leases as of December 31, 2024:
Year(In thousands)
2025$712 
2026592 
2027469 
2028434 
2029294 
Thereafter488 
Total minimum lease payments2,989 
Less: amount representing interest 1
225 
Present value of net minimum lease payments$2,764 
__________________________________________________
1Amount necessary to reduce net minimum lease payments to present value calculated at the Corporation’s incremental borrowing rate.
v3.25.0.1
GOODWILL AND INTANGIBLE ASSETS (Tables)
 12 Months Ended
Dec. 31, 2024
Business Combinations [Abstract]  
Carrying Value And Accumulated Amortization Of The Intangible Assets (Customer Lists and Core Deposit Intangibles)
The carrying value and accumulated amortization of the intangible assets and core deposit intangibles are as follows:
20242023
(In thousands)Gross
Carrying
Amount		Accumulated AmortizationGross
Carrying
Amount		Accumulated Amortization
ACNB Insurance Services - amortized intangible assets$16,331 $9,658 $16,331 $8,956 
Core deposit intangibles5,978 4,813 5,978 4,271 
$22,309 $14,471 $22,309 $13,227 
Expected Amortization Expense
The following table shows the amortization expense of the intangible assets for future periods:
Year (In thousands)
2025$1,115 
20261,004 
2027857 
2028711 
2029646 
Thereafter3,505 
$7,838 
v3.25.0.1
DEPOSITS (Tables)
 12 Months Ended
Dec. 31, 2024
Interest-Bearing Deposit Liabilities [Abstract]  
Schedule Of Deposits
Deposits were comprised of the following as of December 31:
(In thousands)20242023
Noninterest-bearing demand deposits$451,503 $500,332 
Interest-bearing demand deposits505,096 524,289 
Money market251,667 264,907 
Savings311,207 340,134 
Total demand and savings1,519,473 1,629,662 
Time273,028 232,151 
Total deposits$1,792,501 $1,861,813 
Schedule Of Maturities Of Time Certificates Of Deposits
Scheduled maturities of time certificates of deposit at December 31, 2024, were as follows (in thousands):
Time Deposits
YearLess than $250,000$250,000 or more
2025$194,777 $40,592 
202624,917 778 
20277,585 — 
20281,940 — 
20292,436 — 
Thereafter3 — 
Total time deposits$231,658 $41,370 
v3.25.0.1
BORROWINGS (Tables)
 12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Short-term Debt
Short-term borrowings and weighted-average interest rates at December 31 are as follows:
 20242023
(Dollars in thousands)AmountRateAmountRate
Securities sold under repurchase agreements$15,826 0.23 %$26,882 0.15 %
FHLB advance— — 30,000 5.64 
Total$15,826 0.23 %$56,882 3.05 %
Schedule of Maturities of Long-term Debt
A summary of long-term borrowings and their weighted-average contractual rates as of December 31 is as follows:
 20242023
(Dollars in thousands)AmountRateAmountRate
FHLB fixed-rate advances maturing:    
2026$80,000 4.71 %$80,000 4.71 %
202790,000 4.55 60,000 4.64 
202835,000 4.23 35,000 4.23 
202930,000 4.25 — — 
Trust preferred subordinated debt 1
5,333 6.25 5,292 7.28 
Subordinated debt15,000 4.00 15,000 4.00 
$255,333 4.52 %$195,292 4.62 %
________________________________________
1 Net of purchase accounting fair value mark.
v3.25.0.1
FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
The following tables present assets measured at fair value and the basis of measurement used at December 31:
 2024
(In thousands)BasisLevel 1Level 2Level 3Total
Equity securities with readily determinable fair valuesRecurring$919 $— $— $919 
AFS Investment Securities:
U.S. Government and agencies — 143,193 — 143,193 
Collateralized mortgage obligations — 35,654 — 35,654 
Residential mortgage-backed securities— 138,540 — 138,540 
Commercial mortgage-backed securities— 60,785 — 60,785 
Corporate bonds — 15,803 — 15,803 
Total AFS Investment SecuritiesRecurring$— $393,975 $— $393,975 
Loans held for saleRecurring— 426 — 426 
Individually evaluated loansNon-recurring— — 1,690 1,690 
Foreclosed assets held for resaleNon-recurring— — 438 438 
 2023
(In thousands)BasisLevel 1Level 2Level 3Total
Equity securities with readily determinable fair valuesRecurring$928 $— $— $928 
AFS Investment Securities:
U.S. Government and agencies — 156,795 — 156,795 
Collateralized mortgage obligations — 41,084 — 41,084 
Residential mortgage-backed securities— 158,830 — 158,830 
Commercial mortgage-backed securities— 65,290 — 65,290 
Corporate bonds— 29,694 — 29,694 
Total AFS Investment SecuritiesRecurring$— $451,693 $— $451,693 
Loans held for saleRecurring— 280 — 280 
Individually evaluated loansNon-recurring— — 242 242 
Foreclosed assets held for resaleNon-recurring— — 467 467 
Fair Value Inputs, Assets, Quantitative Information
The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis for which the Corporation has utilized Level 3 inputs to determine fair value as of December 31:
(Dollars in thousands)Fair Value Estimate
Valuation Technique1
Unobservable Input2
RangeWeighted Average
2024
  Individually evaluated loans$1,690 Appraisal of collateralAppraisal adjustments
 16%-100%
47%
Foreclosed assets held for resale438 Appraisal of collateralAppraisal adjustments
17%-53%
50%
2023
Individually evaluated loans$242 Appraisal of collateralAppraisal adjustments
 33%-100%
94%
Foreclosed assets held for resale467 Appraisal of collateralAppraisal adjustments56%56%
__________________________________________________
1 Fair value is generally determined through management’s estimate or independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not observable.
2 Appraisals may be adjusted downward by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percentage of the appraisal. Higher downward adjustments are caused by negative changes to the collateral or conditions in the real estate market, actual offers or sales contracts received, and/or age of the appraisal.
Fair Value, by Balance Sheet Grouping
The following tables present the carrying amount and the estimated fair value of the Corporation’s financial instruments as of December 31:
2024
Carrying AmountEstimated Fair Value
(In thousands)TotalLevel 1Level 2Level 3
Financial assets:
Cash and due from banks$16,352 $16,352 $16,352 $— $— 
Interest-bearing deposits with banks30,910 30,910 30,910 — — 
Equity securities with readily determinable fair values919 919 919 — — 
Investment securities available for sale393,975 393,975 — 393,975 — 
Investment securities held to maturity64,578 56,924 — 56,924 — 
Loans held for sale426 426 — 426 — 
Loans, net1,665,630 1,635,351 — — 1,635,351 
Accrued interest receivable8,189 8,189 — 8,189 — 
Restricted investment in bank stocks10,853 N/A— N/A— 
Financial liabilities:
Demand deposits, savings, and money markets1,519,473 1,269,889 — 1,269,889 — 
Time deposits273,028 267,336 — 267,336 — 
Securities sold under repurchase agreements15,826 16,435 — 16,435 — 
FHLB Advances235,000 235,290 — 235,290 — 
Trust preferred and subordinated debt20,333 18,420 — 18,420 — 
Accrued interest payable1,551 1,551 — 1,551 — 
2023
Carrying AmountEstimated Fair Value
(In thousands)TotalLevel 1Level 2Level 3
Financial assets:
Cash and due from banks$21,442 $21,442 $7,063 $14,379 $— 
Interest-bearing deposits with banks44,516 44,516 44,516 — — 
Equity securities with readily determinable fair values928 928 928 — — 
Investment securities available for sale451,693 451,693 — 451,693 — 
Investment securities held to maturity64,600 59,057 — 59,057 — 
Loans held for sale280 280 — 280 — 
Loans, net1,608,019 1,562,703 — — 1,562,703 
Accrued interest receivable8,080 8,080 — 8,080 — 
Restricted investment in bank stocks9,677 N/A— N/A— 
Financial liabilities:
Demand deposits, savings, and money markets1,629,662 1,391,709 — 1,391,709 — 
Time deposits232,151 221,770 — 221,770 — 
Securities sold under repurchase agreements26,882 23,666 — 23,666 — 
Long-term FHLB advances205,000 206,950 — 206,950 — 
Trust preferred and subordinated debt20,292 16,992 — 16,992 — 
Accrued interest payable794 794 — 794 — 
v3.25.0.1
RETIREMENT PLANS (Tables)
 12 Months Ended
Dec. 31, 2024
Postemployment Benefits [Abstract]  
Schedule of Benefit Plan Funded Status
The following table summarized the changes in the projected benefit obligation and fair value of plan assets for the plan years ended December 31:
(In thousands)20242023
Change in benefit obligation:  
Projected Benefit obligation at beginning of year$31,494 $30,226 
Service cost428 495 
Interest cost1,494 1,493 
Actuarial (gain) loss(1,544)983 
Benefits paid(1,830)(1,703)
Projected benefit obligation at end of year30,042 31,494 
Change in plan assets, at fair value:  
Fair value of plan assets at beginning of year46,427 43,119 
Actual return on plan assets1,806 5,011 
Benefits paid(1,830)(1,703)
Fair value of plan assets at end of year46,403 46,427 
Funded Status, included in other assets$16,361 $14,933 
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)
The amounts recognized in accumulated other comprehensive income (loss) are as follows:
(In thousands)202420232022
Total net actuarial loss (pre-tax)$4,539 $5,120 $6,887 
Assumptions Used To Determine The Benefit Obligation and Net Periodic Benefit Cost (Income)
For the years ended December 31, 2024 and 2023, the assumptions used to determine the benefit obligation are as follows:
20242023
Discount rate5.50 %4.90 %
Rate of compensation increase3.50 %3.50 %
The assumptions used to determine the net periodic benefit cost (income) are as follows for the years ended December 31:
202420232022
Discount rate4.90 %5.10 %2.75 %
Expected long-term rate of return on plan assets6.75 %6.75 %6.75 %
Rate of compensation increase3.50 %3.50 %3.50 %
Components Of Net Periodic Benefit Costs (Income)
The components of net periodic benefit cost (income) related to the non-contributory, defined benefit pension plan are as follows for the years ended December 31:
(In thousands)202420232022
Components of net periodic benefit cost (income):  
Service cost$428 $495 $777 
Interest cost1,494 1,493 1,052 
Expected return on plan assets(2,848)(2,653)(3,136)
Recognized net actuarial loss78 392 407 
Net Periodic Benefit Income(848)(273)(900)
Net gain(503)(1,375)(491)
Amortization of net loss(78)(392)(407)
Total recognized in other comprehensive income (loss)(581)(1,767)(898)
Total recognized in net periodic benefit cost (income) and other comprehensive income$(1,429)$(2,040)$(1,798)
Future Benefit Payments
For the year ended December 31, 2024 the mortality assumption was updated to reflect the most recently published mortality information. Estimated future benefit payments are as follows:
Year(In thousands)
2025$2,080 
20262,110 
20272,090 
20282,100 
20292,120 
2030-203411,040 
Pension Plan Weighted-Average Assets' Allocations
The Corporation’s pension plan weighted-average assets’ allocations at December 31, 2024 and 2023, are as follows:
20242023
Equity securities42 %43 %
Debt securities55 54 
Real property3 3 
100 %100 %
Fair Value Measurements
Fair value measurements were as follows:
(In thousands)TotalLevel 1Level 2Level 3
December 31, 2024
Equity securities$19,286 $3,565 $15,721 $— 
Debt securities25,730 — 25,730 — 
Real estate1,387 — 1,387 — 
Total$46,403 $3,565 $42,838 $— 
December 31, 2023
Equity securities$20,123 $3,876 $16,247 $— 
Debt securities24,891 — 24,891 — 
Real estate1,413 — 1,413 — 
Total$46,427 $3,876 $42,551 $— 
v3.25.0.1
INCOME TAXES (Tables)
 12 Months Ended
Dec. 31, 2024
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
The components of income tax expense were as follows:
(In thousands)202420232022
Current:  
Federal$6,780 $7,924 $7,461 
State1,014 755 1,259 
Total7,794 8,679 8,720 
Deferred:  
Federal806 (534)592 
State(27)16 (113)
Total779 (518)479 
Provision for income taxes$8,573 $8,161 $9,199 
Schedule of Reconciliations of the Statutory Federal Income Tax
The differences between the ETR and the federal statutory income tax rate are as follows:
 202420232022
Federal income tax at statutory rate21.0 %21.0 %21.0 %
State income taxes, net of federal benefit1.9 1.5 1.8 
Tax-exempt income(1.0)(1.3)(1.1)
Earnings on investment in bank-owned life insurance(1.0)(1.0)(0.7)
Tax credit benefits— — (0.6)
Nondeductible merger-related costs0.7 — — 
Other(0.4)0.3 0.1 
  Effective income tax rate21.2 %20.5 %20.5 %
Components of Deferred Tax Assets and Liabilities
The net deferred tax asset recorded by the Corporation is included in other assets and consists of the following tax effects of temporary differences as of December 31:
(In thousands)20242023
Deferred tax assets:  
Investment securities available for sale$11,178 $12,052 
Allowance for credit losses3,909 4,533 
Accrued deferred compensation1,436 1,166 
Deferred director fees1,153 1,097 
Defined benefit pension plan1,031 1,162 
Other837 783 
Lease liability592 742 
Allowance for unfunded commitments315 390 
Nonaccrual interest246 740 
Accumulated depreciation59 3 
Total gross deferred tax assets20,756 22,668 
Deferred tax liabilities:  
Prepaid defined benefit pension plan cost4,729 4,552 
Goodwill and intangible assets, net1,449 1,439 
Right of use asset592 742 
Prepaid expenses50 67 
Purchase accounting25 25 
Deferred loan fees(46)57 
Total gross deferred tax liabilities6,799 6,882 
Net deferred tax asset$13,957 $15,786 
v3.25.0.1
REGULATORY MATTERS (Tables)
 12 Months Ended
Dec. 31, 2024
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]  
The Actual and Required Capital Amounts and Ratios
The actual and required regulatory capital levels, leverage ratios and risk-based capital ratios as of December 31:
 ActualFor Capital Adequacy
Purposes
To be Well Capitalized
under Prompt Corrective Action Provisions 2
(Dollars in thousands)AmountRatio
Amount 1
Ratio 1
AmountRatio
CORPORATION      
2024    
Tier 1 Leverage Capital (to average assets)$303,105 12.52 %$96,871 4.0%N/AN/A
Common Equity Tier 1 Capital (to risk-weighted assets)297,772 16.27 82,343 4.5N/AN/A
Tier 1 Capital (to risk-weighted assets)303,105 16.56 109,791 6.0N/AN/A
Total Capital (to risk-weighted assets)335,949 18.36 146,388 8.0N/AN/A
2023      
Tier 1 Leverage Capital (to average assets)$280,135 11.57 %$96,822 4.0%N/AN/A
Common Equity Tier 1 Capital (to risk-weighted assets)274,844 15.16 81,562 4.5N/AN/A
Tier 1 Capital (to risk-weighted assets)280,135 15.46 108,749 6.0N/AN/A
Total Capital (to risk-weighted assets)315,564 17.41 144,999 8.0N/AN/A
ACNB BANK      
2024      
Tier 1 Leverage Capital (to average assets)$290,567 12.03 %$96,652 4.0%$120,815 5.0%
Common Equity Tier 1 Capital (to risk-weighted assets)290,567 16.03 81,565 4.5117,816 6.5
Tier 1 Capital (to risk-weighted assets)290,567 16.03 108,753 6.0145,005 8.0
Total Capital (to risk-weighted assets)308,412 17.02 145,005 8.0181,256 10.0
2023      
Tier 1 Leverage Capital (to average assets)$268,314 11.12 %$96,494 4.0%$120,618 5.0%
Common Equity Tier 1 Capital (to risk-weighted assets)268,314 14.86 81,260 4.5117,375 6.5
Tier 1 Capital (to risk-weighted assets)268,314 14.86 108,346 6.0144,462 8.0
Total Capital (to risk-weighted assets)288,742 15.99 144,462 8.0180,577 10.0
__________________________________________________
1 Amounts and ratios do not include capital conservation buffer.
2 N/A - Not applicable as “well capitalized” applies only to banks.
v3.25.0.1
COMMITMENTS AND CONTINGENCIES (Tables)
 12 Months Ended
Dec. 31, 2024
Risks and Uncertainties [Abstract]  
Schedule of Fair Value, Off-balance Sheet Risks
A summary of the Corporation’s commitments at December 31 were as follows:
(In thousands)20242023
Commitments to extend credit$372,839 $403,300 
Standby letters of credit15,103 21,029 
v3.25.0.1
EARNINGS PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
Years Ended December 31,
202420232022
Weighted average shares outstanding (basic)8,503,473 8,507,803 8,623,012 
Dilutive effect of unvested shares33,492 28,322 — 
Weighted average shares outstanding (diluted)8,536,965 8,536,125 8,623,012 
Per share:
Basic$3.75 $3.72 $4.15 
Diluted3.73 3.71 4.15 
v3.25.0.1
STOCKHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Schedule Of Components Of The Accumulated Other Comprehensive Loss, Net Of Taxes The components of the accumulated other comprehensive loss, net of taxes, are as follows:
(In thousands)Unrealized (Losses) Gains on
Securities		Pension
Liability		Accumulated
Other
Comprehensive
Loss
Balance at December 31, 2021$(3,474)$(6,071)$(9,545)
Unrealized losses on AFS securities, net of income tax(50,192)— (50,192)
Realized losses on securities, net of income tax193— 193 
Amortization of unrealized losses on securities transferred to HTM, net of income tax739— 739 
Amortization of pension net loss, net of income tax— 317317 
Unrecognized pension net gain, net of income tax— 476 476 
Net current period other comprehensive (loss) income$(49,260)$793 $(48,467)
Balance at December 31, 2022$(52,734)$(5,278)$(58,012)
Unrealized gain on AFS securities, net of income tax6,814 — 6,814 
Realized losses on securities, net of income tax4,052 — 4,052 
Amortization of unrealized losses on securities transferred to HTM, net of income tax916 — 916 
Amortization of pension net loss, net of income tax— 258 258 
Unrecognized pension net gain, net of income tax— 1,063 1,063 
Net current period other comprehensive income$11,782 $1,321 $13,103 
Balance at December 31, 2023
$(40,952)$(3,957)$(44,909)
Unrealized gain on AFS securities, net of income tax1,992 — 1,992 
Realized gains on securities, net of income tax(53)— (53)
Amortization of unrealized losses on securities transferred to HTM, net of income tax853 — 853 
Amortization of pension net loss, net of income tax— 60 60 
Unrecognized pension net gain, net of income tax— 389 389 
Net current period other comprehensive income$2,792 $449 $3,241 
Balance at December 31, 2024
$(38,160)$(3,508)$(41,668)
v3.25.0.1
ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]  
Statements of Condition
 December 31,
(In thousands)20242023
ASSETS  
Cash$19,826 $16,647 
Investment in banking subsidiary284,416 258,748 
Investment in other subsidiaries19,331 20,023 
Securities and other assets191 1,107 
Receivable from banking subsidiary63 1,355 
Total Assets$323,827 $297,880 
LIABILITIES AND STOCKHOLDERS’ EQUITY  
Long-term borrowings$20,333 $20,292 
Other liabilities221 127 
Stockholders’ equity303,273 277,461 
Total Liabilities and Stockholders’ Equity$323,827 $297,880 
Statements of Income
 Years Ended December 31,
(In thousands)202420232022
Dividends from banking subsidiary$10,713 $9,702 $9,117 
Net (loss) gain on sales of securities— (7)13 
Other Income31 41 519 
10,744 9,736 9,649 
Expenses2,859 1,934 1,653 
7,885 7,802 7,996 
Income tax benefit426 413 516 
8,311 8,215 8,512 
Equity in undistributed earnings of subsidiaries23,535 23,473 27,240 
Net Income$31,846 $31,688 $35,752 
Comprehensive Income (Loss) $35,087 $44,791 $(12,715)
Statements of Cash Flows
 Years Ended December 31,
(In thousands)202420232022
CASH FLOWS FROM OPERATING ACTIVITIES  
Net income$31,846 $31,688 $35,752 
Equity in undistributed earnings of subsidiaries(23,535)(23,473)(27,240)
Decrease (increase) in receivable from banking subsidiary1,292 153 (311)
Gain on sale of equity securities— (7)(13)
Mark-to-market gain on equity securities— — 177 
Gain on sale of low-income housing partnership— — (421)
Other2,314 439 (308)
Net Cash Provided by Operating Activities11,917 8,800 7,636 
CASH FLOWS FROM INVESTING ACTIVITIES  
Return on investment from subsidiary1,800 — 13,000 
Proceeds from sale of low-income housing partnership— — 421 
Proceeds from sale of equity securities— 592 811 
Net Cash Used in Investing Activities1,800 592 14,232 
CASH FLOWS USED IN FINANCING ACTIVITIES  
Repayments on long-term borrowings— — (2,700)
Dividends paid(10,713)(9,702)(9,117)
Common stock repurchased(249)(2,027)(6,681)
Common stock issued424 721 1,442 
Net Cash Used in Financing Activities(10,538)(11,008)(17,056)
Net Increase (Decrease) in Cash and Cash Equivalents3,179 (1,616)4,812 
CASH AND CASH EQUIVALENTS — BEGINNING16,647 18,263 13,451 
CASH AND CASH EQUIVALENTS — ENDING$19,826 $16,647 $18,263 
v3.25.0.1
SEGMENT AND RELATED INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Segment Information
Reportable segment information and reconciliations to the consolidated financial information for the years ended December 31:
(In thousands)BankingInsurance
Other1
Total
2024   
Interest income$107,456 $4 $5 $107,465 
Noninterest income14,976 9,754 — 24,730 
Total consolidated revenues132,195 
Interest expense22,803 — 1,051 23,854 
Reversal of credit losses and unfunded commitments(2,763)— — (2,763)
Depreciation and amortization expense2,246 787 — 3,033 
Salaries and employee benefits36,670 5,869 390 42,929 
Other noninterest expense2
21,758 1,574 1,391 24,723 
Income before income taxes41,718 1,528 (2,827)40,419 
Provision for income taxes8,579 420 (426)8,573 
Net income (loss)$33,139 $1,108 $(2,401)$31,846 
Total assets$2,377,180 $22,026 $(4,376)$2,394,830 
Goodwill$35,800 $8,385 $— $44,185 
Capital expenditures$929 $31 $— $960 
2023   
Interest income$96,600 $3 $37 $96,640 
Noninterest income9,133 9,319 (7)18,445 
Total consolidated revenues115,085 
Interest expense7,268 — 1,052 8,320 
Provision for credit losses and unfunded commitments844 — — 844 
Depreciation and amortization expense2,515 847 — 3,362 
Salaries and employee benefits35,322 5,609 — 40,931 
Other noninterest expense2
19,736 1,165 87821,779 
Income before income taxes40,048 1,701 (1,900)39,849 
Provision for income taxes8,139 435 (413)8,161 
Net income (loss)$31,909 $1,266 $(1,487)$31,688 
Total assets$2,397,992 $23,187 $(2,332)$2,418,847 
Goodwill$35,800 $8,385 $— $44,185 
Capital expenditures$424 $744 $— $1,168 
2022
Interest income$86,952 $2 $95 $87,049 
Noninterest income13,242 8,307 258 21,807 
Total consolidated revenues108,856 
Interest expense2,672 35 917 3,624 
Depreciation and amortization expense2,995 801 — 3,796 
Salaries and employee benefits30,941 5,038 — 35,979 
Other noninterest expense2
18,826 1,123 557 20,506 
Income before income taxes44,760 1,312 (1,121)44,951 
Provision for income taxes9,353 362 (516)9,199 
Net income (loss)$35,407 $950 $(605)$35,752 
Total assets$2,487,272 $21,414 $16,821 $2,525,507 
Goodwill$35,800 $8,385 $— $44,185 
Capital expenditures$1,783 $28 $— $1,811 
__________________________________________________
1 Includes the holding company and intercompany eliminations, including the intersegment elimination of interest income and interest expense.
2 Other noninterest expense for Banking includes equipment, net occupancy, professional services, other tax, FDIC and regulatory and merger-related expenses. Other noninterest expense for Insurance includes equipment, net occupancy and professional services expenses.
v3.25.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Feb. 01, 2025
USD ($)
$ / shares
shares
Feb. 24, 2019
Dec. 31, 2024
USD ($)
branch
bank
shares
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
USD ($)
shares
Jan. 01, 2023
USD ($)
Dec. 31, 2021
USD ($)
Mar. 08, 2019
shares
Mar. 20, 2018
shares
Summary of Significant Accounting Policies [Line Items]                  
Number of community banking office locations, ACNB | bank     27            
Post-employment benefit cost for continuing life insurance     $ 165 $ 214 $ 81        
Weighted average shares outstanding, basic (in shares) | shares     8,503,473 8,507,803 8,623,012        
Foreclosed assets held for resale     $ 438 $ 467          
Less: Allowance for credit losses     (17,280) (19,969) $ (17,861) $ (17,861) $ (19,033)    
Financing Receivable, Credit Loss, Expense (Reversal)     (2,763) 844          
Retained earnings     234,624 213,491   245,042      
Allowance for unfunded commitments     1,394 1,719   92      
Total assets     2,394,830 2,418,847 2,525,507        
Gross loans     1,684,146 1,629,700          
Total Deposits     $ 1,792,501 $ 1,861,813          
Common stock, shares outstanding | shares     8,553,785 8,511,453          
Traditions Bancorp, Inc.                  
Summary of Significant Accounting Policies [Line Items]                  
Number Of Community Banking Offices, Traditions | branch     8            
Total assets     $ 870,100 $ 840,100          
Gross loans     674,400 668,800          
Total Deposits     $ 749,300 $ 731,100          
Common stock, shares outstanding | shares     2,788,164 2,736,544          
Traditions Bancorp, Inc. | Subsequent Event                  
Summary of Significant Accounting Policies [Line Items]                  
Business Combination, Equity Interest Issued or Issuable, Number of Shares Per Shareholder | shares 0.7300                
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned Per Share | $ / shares $ 41.10                
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned $ 83,800                
Number of shares issued in acquisition (in shares) | shares 2,035,270                
Unfunded Loan Commitment                  
Summary of Significant Accounting Policies [Line Items]                  
Financing Receivable, Credit Loss, Expense (Reversal)     $ (326) $ (16) 0        
Revision of Prior Period, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Financing Receivable, Allowance for Credit Loss, Total Adjustment           3,300      
Less: Allowance for credit losses           (1,618)      
Retained earnings           2,368      
Allowance for unfunded commitments           1,643      
Cumulative Effect, Period of Adoption, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses         (1,618)        
Adams, Cumberland, Franklin, Lancaster and York Counties, Pennsylvania                  
Summary of Significant Accounting Policies [Line Items]                  
Number of community banking office locations, ACNB | bank     18            
Carroll and Frederick Counties, Maryland                  
Summary of Significant Accounting Policies [Line Items]                  
Number of community banking office locations, ACNB | bank     9            
Minimum                  
Summary of Significant Accounting Policies [Line Items]                  
Remaining lease terms     1 year            
Initial term greater than     12 months            
Maximum                  
Summary of Significant Accounting Policies [Line Items]                  
Remaining lease terms     12 years            
Residential Mortgage and Commercial Loans                  
Summary of Significant Accounting Policies [Line Items]                  
Threshold period past due to discontinue accrual interest on financing receivable     90 days            
Consumer                  
Summary of Significant Accounting Policies [Line Items]                  
Threshold period past due for charge off of financing receivable     120 days            
Less: Allowance for credit losses     $ (98) (141) (376) 376 (408)    
Gross loans     9,318 9,954          
Consumer | Revision of Prior Period, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses           142      
Consumer | Cumulative Effect, Period of Adoption, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses         142        
Commercial real estate                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses     (10,578) (12,010) (10,016) 10,016 (10,716)    
Gross loans     $ 969,514 898,709          
Commercial real estate | Revision of Prior Period, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses           (1,106)      
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses         (1,106)        
Commercial real estate | Maximum                  
Summary of Significant Accounting Policies [Line Items]                  
Financing receivable term     20 years            
Loan-to-value ratio (no greater than)     80.00%            
Residential Mortgage                  
Summary of Significant Accounting Policies [Line Items]                  
Loan-to-value ratio that requires private mortgage insurance (in excess of)     80.00%            
Residential Mortgage | Maximum                  
Summary of Significant Accounting Policies [Line Items]                  
Financing receivable term     30 years            
Loan-to-value ratio (no greater than)     80.00%            
Home equity lines of credit                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses     $ (294) (397) (347) 347 $ (501)    
Gross loans     $ 85,685 $ 90,163          
Home equity lines of credit | Revision of Prior Period, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses           $ (17)      
Home equity lines of credit | Cumulative Effect, Period of Adoption, Adjustment                  
Summary of Significant Accounting Policies [Line Items]                  
Less: Allowance for credit losses         $ (17)        
Home equity lines of credit | Maximum                  
Summary of Significant Accounting Policies [Line Items]                  
Financing receivable term     20 years            
Loan-to-value ratio (no greater than)     90.00%            
Buildings                  
Summary of Significant Accounting Policies [Line Items]                  
Useful life     40 years            
Building Remodels and Additions                  
Summary of Significant Accounting Policies [Line Items]                  
Useful life     15 years            
Furniture and equipment | Minimum                  
Summary of Significant Accounting Policies [Line Items]                  
Useful life     3 years            
Furniture and equipment | Maximum                  
Summary of Significant Accounting Policies [Line Items]                  
Useful life     15 years            
Core Deposits                  
Summary of Significant Accounting Policies [Line Items]                  
Intangible asset amortization life     10 years            
Customer Lists | Minimum                  
Summary of Significant Accounting Policies [Line Items]                  
Intangible asset amortization life     8 years            
Customer Lists | Maximum                  
Summary of Significant Accounting Policies [Line Items]                  
Intangible asset amortization life     15 years            
ACNB Corporation 2009 Restricted Stock Plan                  
Summary of Significant Accounting Policies [Line Items]                  
2009 Restricted Stock plan, expiration period   10 years              
2009 Restricted Stock Plan, number of shares authorized, but not issued (in shares) | shares               174,055  
ACNB Corporation 2018 Omnibus Stock Incentive Plan | Restricted Stock                  
Summary of Significant Accounting Policies [Line Items]                  
Shares issued under plan since inception (in shares) | shares     138,019            
Non-vested number of shares (in shares) | shares     38,438            
Awards authorized (in shares) | shares                 400,000
v3.25.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule Of Components Of The Accumulated Other Comprehensive Income, Net Of Taxes) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Jan. 01, 2023
Dec. 31, 2022
Dec. 31, 2021
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses $ (17,280) $ (19,969) $ (17,861) $ (17,861) $ (19,033)
Loans, net 1,665,630 1,608,019 1,520,749    
Net deferred tax asset 13,957 15,786 17,718    
Allowance for unfunded commitments 1,394 1,719 92    
Retained earnings 234,624 213,491 245,042    
Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (19,479)    
Loans, net     1,519,131    
Net deferred tax asset     18,452    
Allowance for unfunded commitments     1,735    
Retained earnings     242,674    
Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (1,618)    
Loans, net     1,618    
Net deferred tax asset     734    
Allowance for unfunded commitments     1,643    
Retained earnings     2,368    
Commercial and industrial          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses (1,416) (2,048) 2,848 (2,848) (3,176)
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (2,086)    
Commercial and industrial | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     762    
Commercial real estate          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses (10,578) (12,010) 10,016 (10,016) (10,716)
Commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (11,122)    
Commercial real estate | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (1,106)    
Real estate construction          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses (1,918) (2,070) 1,000 (1,000) (616)
Real estate construction | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (2,347)    
Real estate construction | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (1,347)    
Residential mortgage          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses (2,976) (3,303) 3,029 (3,029) (3,235)
Residential mortgage | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (3,326)    
Residential mortgage | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (297)    
Home equity lines of credit          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses (294) (397) 347 (347) (501)
Home equity lines of credit | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (364)    
Home equity lines of credit | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (17)    
Consumer          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses (98) (141) 376 (376) (408)
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     (234)    
Consumer | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     142    
Unallocated          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses $ 0 $ 0 245 $ (245) $ (381)
Unallocated | Cumulative Effect, Period of Adoption, Adjusted Balance          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     0    
Unallocated | Revision of Prior Period, Adjustment          
Accumulated Other Comprehensive Loss [Line Items]          
Less: Allowance for credit losses     $ 245    
v3.25.0.1
INVESTMENT SECURITIES (Schedule of Required Fair Value Disclosures for Equity Securities) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward]      
Fair Value at beginning of period $ 928 $ 1,719 $ 2,609
Purchases 0 0 206
Sales/reclassification   798 811
(Losses)/Gains (9) 18 (298)
Losses on sales of securities   (11) 13
Fair Value at end of period 919 928 1,719
Stock in other banks      
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward]      
Fair Value at beginning of period 0 598 1,573
Purchases   0 0
Sales/reclassification   592 811
(Losses)/Gains   5 (177)
Losses on sales of securities   (11) 13
Fair Value at end of period   0 598
Canapi Ventures SBIC Fund      
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward]      
Fair Value at beginning of period 0 206 0
Purchases   0 206
Sales/reclassification   206 0
(Losses)/Gains   0 0
Losses on sales of securities   0 0
Fair Value at end of period   0 206
CRA Mutual Fund      
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward]      
Fair Value at beginning of period 928 915 1,036
Purchases 0 0 0
Sales/reclassification 0 0 0
(Losses)/Gains (9) 13 (121)
Losses on sales of securities 0 0 0
Fair Value at end of period $ 919 $ 928 $ 915
v3.25.0.1
INVESTMENT SECURITIES (Unrealized Gain (Loss) on Investments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Schedule of Investments [Line Items]    
Securities Available for sale, Amortized Cost $ 441,638 $ 501,912
Securities Available for sale, Gross Unrealized Gains 2 565
Securities Available for sale, Gross Unrealized Losses 47,665 50,784
Securities Available for sale, Fair Value 393,975 451,693
Securities Held to maturity, Amortized Cost 64,578 64,600
Securities Held to maturity, Gross Unrealized Gains 0 0
Securities Held to maturity, Gross Unrealized Losses 7,654 5,543
Securities held to maturity, fair value 56,924 59,057
U.S. Government and agencies    
Schedule of Investments [Line Items]    
Securities Available for sale, Amortized Cost 159,799 176,458
Securities Available for sale, Gross Unrealized Gains 0 0
Securities Available for sale, Gross Unrealized Losses 16,606 19,663
Securities Available for sale, Fair Value 143,193 156,795
State and municipal    
Schedule of Investments [Line Items]    
Securities Held to maturity, Amortized Cost 62,838 62,133
Securities Held to maturity, Gross Unrealized Gains 0 0
Securities Held to maturity, Gross Unrealized Losses 7,586 5,419
Securities held to maturity, fair value 55,252 56,714
Collateralized Mortgage-Backed Securities    
Schedule of Investments [Line Items]    
Securities Available for sale, Amortized Cost 39,540 45,189
Securities Available for sale, Gross Unrealized Gains 0 0
Securities Available for sale, Gross Unrealized Losses 3,886 4,105
Securities Available for sale, Fair Value 35,654 41,084
Mortgage-backed securities, residential    
Schedule of Investments [Line Items]    
Securities Available for sale, Amortized Cost 159,349 178,441
Securities Available for sale, Gross Unrealized Gains 2 19
Securities Available for sale, Gross Unrealized Losses 20,811 19,630
Securities Available for sale, Fair Value 138,540 158,830
Securities Held to maturity, Amortized Cost 1,740 2,467
Securities Held to maturity, Gross Unrealized Gains 0 0
Securities Held to maturity, Gross Unrealized Losses 68 124
Securities held to maturity, fair value 1,672 2,343
Commercial Mortgage-Backed Securities    
Schedule of Investments [Line Items]    
Securities Available for sale, Amortized Cost 65,350 69,498
Securities Available for sale, Gross Unrealized Gains 0 344
Securities Available for sale, Gross Unrealized Losses 4,565 4,552
Securities Available for sale, Fair Value 60,785 65,290
Corporate bonds    
Schedule of Investments [Line Items]    
Securities Available for sale, Amortized Cost 17,600 32,326
Securities Available for sale, Gross Unrealized Gains 0 202
Securities Available for sale, Gross Unrealized Losses 1,797 2,834
Securities Available for sale, Fair Value $ 15,803 $ 29,694
v3.25.0.1
INVESTMENT SECURITIES (Schedule of Unrealized Loss on Investments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]        
Securities Available for sale, Less than 12 Months: Fair Value $ 34,552 $ 0    
Securities Available for sale, Less than 12 Months: Unrealized Losses 99 0    
Securities Available for sale, 12 Months or More: Fair Value 359,201 402,517    
Securities Available for sale, 12 Months or More: Unrealized Losses 47,566 50,784    
Securities Available for sale, Total: Fair Value 393,753 402,517    
Securities Available for sale, Total Unrealized Loss 47,665 50,784    
Securities Held to maturity, Less than 12 Months: Fair Value 0 0    
Securities Held to maturity, Less than 12 Months: Unrealized Losses 0 0    
Securities Held to maturity, 12 Months or More, Fair Value 56,924 59,057    
Securities Held to maturity, 12 Months or More, Unrealized Losses 7,654 5,543    
Securities Held to maturity, Total: Fair Value 56,924 59,057    
Securities Held to maturity, Total Unrealized Losses 7,654 5,543    
Equity securities with readily determinable fair values 919 928 $ 1,719 $ 2,609
Payments to Acquire Equity Securities, FV-NI 0 0 206  
Sales/reclassification   798 811  
(Losses)/Gains (9) 18 (298)  
Losses on sales of securities   (11) 13  
U.S. Government and agencies        
Schedule of Investments [Line Items]        
Securities Available for sale, Less than 12 Months: Fair Value 0 0    
Securities Available for sale, Less than 12 Months: Unrealized Losses 0 0    
Securities Available for sale, 12 Months or More: Fair Value 143,193 156,795    
Securities Available for sale, 12 Months or More: Unrealized Losses 16,606 19,663    
Securities Available for sale, Total: Fair Value 143,193 156,795    
Securities Available for sale, Total Unrealized Loss 16,606 19,663    
State and municipal        
Schedule of Investments [Line Items]        
Securities Held to maturity, Less than 12 Months: Fair Value 0 0    
Securities Held to maturity, Less than 12 Months: Unrealized Losses 0 0    
Securities Held to maturity, 12 Months or More, Fair Value 55,252 56,714    
Securities Held to maturity, 12 Months or More, Unrealized Losses 7,586 5,419    
Securities Held to maturity, Total: Fair Value 55,252 56,714    
Securities Held to maturity, Total Unrealized Losses 7,586 5,419    
Collateralized Mortgage-Backed Securities        
Schedule of Investments [Line Items]        
Securities Available for sale, Less than 12 Months: Fair Value 0 0    
Securities Available for sale, Less than 12 Months: Unrealized Losses 0 0    
Securities Available for sale, 12 Months or More: Fair Value 35,654 41,085    
Securities Available for sale, 12 Months or More: Unrealized Losses 3,886 4,104    
Securities Available for sale, Total: Fair Value 35,654 41,085    
Securities Available for sale, Total Unrealized Loss 3,886 4,104    
Mortgage-backed securities, residential        
Schedule of Investments [Line Items]        
Securities Available for sale, Less than 12 Months: Fair Value 2,692 0    
Securities Available for sale, Less than 12 Months: Unrealized Losses 26 0    
Securities Available for sale, 12 Months or More: Fair Value 135,626 156,295    
Securities Available for sale, 12 Months or More: Unrealized Losses 20,785 19,630    
Securities Available for sale, Total: Fair Value 138,318 156,295    
Securities Available for sale, Total Unrealized Loss 20,811 19,630    
Securities Held to maturity, Less than 12 Months: Fair Value 0 0    
Securities Held to maturity, Less than 12 Months: Unrealized Losses 0 0    
Securities Held to maturity, 12 Months or More, Fair Value 1,672 2,343    
Securities Held to maturity, 12 Months or More, Unrealized Losses 68 124    
Securities Held to maturity, Total: Fair Value 1,672 2,343    
Securities Held to maturity, Total Unrealized Losses 68 124    
Commercial Mortgage-Backed Securities        
Schedule of Investments [Line Items]        
Securities Available for sale, Less than 12 Months: Fair Value 31,860 0    
Securities Available for sale, Less than 12 Months: Unrealized Losses 73 0    
Securities Available for sale, 12 Months or More: Fair Value 28,925 33,063    
Securities Available for sale, 12 Months or More: Unrealized Losses 4,492 4,553    
Securities Available for sale, Total: Fair Value 60,785 33,063    
Securities Available for sale, Total Unrealized Loss 4,565 4,553    
Corporate bonds        
Schedule of Investments [Line Items]        
Securities Available for sale, Less than 12 Months: Fair Value 0 0    
Securities Available for sale, Less than 12 Months: Unrealized Losses 0 0    
Securities Available for sale, 12 Months or More: Fair Value 15,803 15,279    
Securities Available for sale, 12 Months or More: Unrealized Losses 1,797 2,834    
Securities Available for sale, Total: Fair Value 15,803 15,279    
Securities Available for sale, Total Unrealized Loss 1,797 2,834    
Stock in other banks        
Schedule of Investments [Line Items]        
Equity securities with readily determinable fair values   0 598 1,573
Payments to Acquire Equity Securities, FV-NI   0 0  
Sales/reclassification   592 811  
(Losses)/Gains   5 (177)  
Losses on sales of securities   (11) 13  
CRA Mutual Fund        
Schedule of Investments [Line Items]        
Equity securities with readily determinable fair values 919 928 915 1,036
Payments to Acquire Equity Securities, FV-NI 0 0 0  
Sales/reclassification 0 0 0  
(Losses)/Gains (9) 13 (121)  
Losses on sales of securities $ 0 0 0  
Canapi Ventures SBIC Fund        
Schedule of Investments [Line Items]        
Equity securities with readily determinable fair values   0 206 $ 0
Payments to Acquire Equity Securities, FV-NI   0 206  
Sales/reclassification   206 0  
(Losses)/Gains   0 0  
Losses on sales of securities   $ 0 $ 0  
v3.25.0.1
INVESTMENT SECURITIES (Investments Classified by Contractual Maturity Date) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]    
Available for sale Securities, Amortized Cost, 1 year or less $ 18,009  
Available for sale Securities, Fair Value, 1 year or less 17,592  
Available for sale Securities, Amortized Cost, Over 1 year through 5 years 102,083  
Available for sale Securities, Fair Value, Over 1 year through 5 years 93,188  
Available for sale Securities, Amortized Cost, Over 5 years through 10 years 55,307  
Available for sale Securities, Fair Value, Over 5 years through 10 years 46,670  
Available for sale Securities, Amortized Cost, Over 10 years 2,000  
Available for sale Securities, Fair Value, Over 10 years 1,546  
Available for sale Securities, Amortized Cost, without a Single Maturity Date 264,239  
Available for sale Securities, Fair Value, without a Single Maturity Date 234,979  
Securities Available for sale, Amortized Cost 441,638 $ 501,912
Investment securities available for sale, at estimated fair value 393,975 451,693
Held to maturity Securities, Amortized Cost, 1 year or less 0  
Held to maturity Securities, Fair Value, 1 year or less 0  
Held to maturity Securities, Amortized Cost, Over 1 year through 5 years 4,188  
Held to maturity Securities, Fair Value, Over 1 year through 5 years 3,735  
Held to maturity Securities, Amortized Cost, Over 5 years through 10 years 27,266  
Held to maturity Securities, Fair Value, Over 5 years through 10 years 25,927  
Held to maturity Securities, Amortized Cost, Over 10 years 31,384  
Held to maturity Securities, Fair Value, Over 10 years 25,590  
Held to maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount 1,740  
Held to maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value 1,672  
Securities Held to maturity, Amortized Cost 64,578 64,600
Investment securities held to maturity $ 56,924 $ 59,057
v3.25.0.1
INVESTMENT SECURITIES (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]      
Proceeds from sales of investment securities available for sale $ 14,336,000 $ 125,241,000 $ 3,129,000
Purchase of investment securities 0 48,838,000 $ 284,336,000
Investment securities available for sale, at estimated fair value 393,975,000 451,693,000  
Carrying value of securities pledged as collateral as required by law on public and trust deposits, repurchase agreements, and for other purposes 157,300,000 233,700,000  
U.S. Government and agencies      
Schedule of Investments [Line Items]      
Investment securities available for sale, at estimated fair value 143,193,000 156,795,000  
Corporate bonds      
Schedule of Investments [Line Items]      
Investment securities available for sale, at estimated fair value $ 15,803,000 $ 29,694,000  
v3.25.0.1
INVESTMENT SECURITIES - Gain (Loss) on Securities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]      
Proceeds from sales $ 14,336 $ 125,241 $ 4,994
Proceeds from calls 1,984 0 0
Gross gains 87 230 14
Gross losses $ 18 $ 5,470 $ 248
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Classes Of The Loan Portfolio Summarized By The Aggregate Risk Rating) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans $ 1,684,146 $ 1,629,700
Unearned income (1,236) (1,712)
Total loans, net of unearned income 1,682,910 1,627,988
Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 969,514 898,709
Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 401,950 394,189
Commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 140,906 152,344
Home equity lines of credit    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 85,685 90,163
Real estate construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 76,773 84,341
Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 9,318 9,954
Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 1,299,173 1,232,950
Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans 46,666 53,473
Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Gross loans $ 17,450 $ 14,017
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Related Party Loans Activity) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
Loans and Leases Receivable, Related Parties [Roll Forward]  
Beginning balance $ 5,307
Repayments 548
Ending balance $ 4,759
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]      
Interest lost on nonaccrual loans $ 299 $ 302 $ 410
Aggregate amount of loans with related parties 4,759 5,307  
Repayments on loans or advances to related parties 548    
Financing Receivable, Credit Loss, Expense (Reversal) $ (2,763) $ 844  
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Classes of Loans by Past Due Status (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Past Due [Line Items]    
Gross loans $ 1,684,146 $ 1,629,700
Greater than or equal to 90 days past due and accruing 941 1,162
Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 2,376 1,927
Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 1,567 735
Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 1,410 1,665
Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 5,353 4,327
Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 1,678,793 1,625,373
Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Gross loans 969,514 898,709
Greater than or equal to 90 days past due and accruing 0 0
Commercial real estate | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 763 150
Commercial real estate | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 527 347
Commercial real estate | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 314 0
Commercial real estate | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 1,604 497
Commercial real estate | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 967,910 898,212
Residential mortgage    
Financing Receivable, Past Due [Line Items]    
Gross loans 401,950 394,189
Greater than or equal to 90 days past due and accruing 850 505
Residential mortgage | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 953 1,293
Residential mortgage | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 987 388
Residential mortgage | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 850 849
Residential mortgage | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 2,790 2,530
Residential mortgage | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 399,160 391,659
Commercial and industrial    
Financing Receivable, Past Due [Line Items]    
Gross loans 140,906 152,344
Greater than or equal to 90 days past due and accruing 0 0
Commercial and industrial | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 437 50
Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 24 0
Commercial and industrial | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 155 159
Commercial and industrial | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 616 209
Commercial and industrial | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 140,290 152,135
Home equity lines of credit    
Financing Receivable, Past Due [Line Items]    
Gross loans 85,685 90,163
Greater than or equal to 90 days past due and accruing 91 654
Home equity lines of credit | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 161 414
Home equity lines of credit | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 0 0
Home equity lines of credit | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 91 654
Home equity lines of credit | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 252 1,068
Home equity lines of credit | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 85,433 89,095
Real estate construction    
Financing Receivable, Past Due [Line Items]    
Gross loans 76,773 84,341
Greater than or equal to 90 days past due and accruing 0 0
Real estate construction | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 15 12
Real estate construction | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 11 0
Real estate construction | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 0 0
Real estate construction | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 26 12
Real estate construction | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 76,747 84,329
Consumer    
Financing Receivable, Past Due [Line Items]    
Gross loans 9,318 9,954
Greater than or equal to 90 days past due and accruing 0 3
Consumer | Financing Receivables, 30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 47 8
Consumer | Financing Receivables, 60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 18 0
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 0 3
Consumer | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans 65 11
Consumer | Financial Asset, Not Past Due    
Financing Receivable, Past Due [Line Items]    
Gross loans $ 9,253 $ 9,943
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Loan Portfolio Summarized By The Past Due Status) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Past Due [Line Items]    
Nonaccrual loans $ 5,871 $ 3,011
Greater than or equal to 90 days past due and accruing 941 1,162
Total nonperforming loans 6,812 4,173
Commercial and industrial    
Financing Receivable, Past Due [Line Items]    
Nonaccrual loans 2,307 1,004
Greater than or equal to 90 days past due and accruing 0 0
Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Nonaccrual loans 3,564 1,479
Greater than or equal to 90 days past due and accruing 0 0
Real estate construction    
Financing Receivable, Past Due [Line Items]    
Greater than or equal to 90 days past due and accruing 0 0
Residential mortgage    
Financing Receivable, Past Due [Line Items]    
Nonaccrual loans 0 343
Greater than or equal to 90 days past due and accruing 850 505
Home equity lines of credit    
Financing Receivable, Past Due [Line Items]    
Nonaccrual loans 0 185
Greater than or equal to 90 days past due and accruing 91 654
Consumer    
Financing Receivable, Past Due [Line Items]    
Greater than or equal to 90 days past due and accruing $ 0 $ 3
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Nonaccrual Loans By Classes Of The Loan Portfolio) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Past Due [Line Items]    
With a Related Allowance $ 2,395 $ 1,319
Without a Related Allowance 3,476 1,692
Total 5,871 3,011
Business Assets    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 2,307 1,004
Real Estate    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 3,564 2,007
Commercial and industrial    
Financing Receivable, Past Due [Line Items]    
With a Related Allowance 2,081 1,004
Without a Related Allowance 226 0
Total 2,307 1,004
Commercial and industrial | Business Assets    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 2,307 1,004
Commercial and industrial | Real Estate    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Commercial real estate    
Financing Receivable, Past Due [Line Items]    
With a Related Allowance 314 315
Without a Related Allowance 3,250 1,164
Total 3,564 1,479
Commercial real estate | Business Assets    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Commercial real estate | Real Estate    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 3,564 1,479
Residential mortgage    
Financing Receivable, Past Due [Line Items]    
With a Related Allowance 0 0
Without a Related Allowance 0 343
Total 0 343
Residential mortgage | Business Assets    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Residential mortgage | Real Estate    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 343
Home equity lines of credit    
Financing Receivable, Past Due [Line Items]    
With a Related Allowance 0 0
Without a Related Allowance 0 185
Total 0 185
Home equity lines of credit | Business Assets    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Home equity lines of credit | Real Estate    
Financing Receivable, Past Due [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss $ 0 $ 185
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Troubled Debt Restructurings) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]    
Mortgage loans in process of foreclosure $ 373 $ 1,300
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Modification (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified $ 0  
Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 4,041  
Financial Asset, 30-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial and industrial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount   $ 549
Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage   0.40%
Financing Receivable, Modified, Weighted Average Term Increase from Modification   4 years 11 months 12 days
Commercial and industrial | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 1,748  
Commercial and industrial | Financial Asset, 30-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial and industrial | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate | Financial Asset, Not Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 2,293  
Commercial real estate | Financial Asset, 30-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate | Financing Receivables, Equal to Greater than 90 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Combination Payment Deferral and Interest Only Payments    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount 4,041  
Combination Payment Deferral and Interest Only Payments | Commercial and industrial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 1,748  
Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage 1.20%  
Combination Payment Deferral and Interest Only Payments | Commercial real estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Excluding Accrued Interest, Modified in Period, Amount $ 2,293  
Financing Receivable, Excluding Accrued Interest, Modified in Period, to Total Financing Receivables, Percentage 0.20%  
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Performance Status (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year $ 205,557 $ 252,168  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 255,979 300,562  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 268,434 233,941  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 212,624 113,922  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 100,774 109,765  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 494,764 479,125  
Revolving Loans Amortized Cost Basis 146,014 140,217  
Gross loans 1,684,146 1,629,700  
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff 0 48  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff 42 83  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff 9 42  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff 0 55  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff 1 23  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff 107 188  
Revolving Loans Amortized Cost Basis 197 67  
Financing Receivable, Allowance for Credit Loss, Writeoff 356 506 $ 1,286
Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 180,103 207,689  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 206,385 244,495  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 214,657 210,808  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 190,822 92,450  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 82,314 90,270  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 365,320 334,815  
Revolving Loans Amortized Cost Basis 59,572 52,423  
Gross loans 1,299,173 1,232,950  
Special Mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 2,182 2,643  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 5,795 7,235  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 8,393 6,803  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 6,977 2,922  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,621 9,188  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 15,985 19,885  
Revolving Loans Amortized Cost Basis 4,713 4,797  
Gross loans 46,666 53,473  
Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 7  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 763 135  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,988 499  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 677 1,621  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,487 713  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 8,174 8,770  
Revolving Loans Amortized Cost Basis 3,361 2,272  
Gross loans 17,450 14,017  
Performing Loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 23,272 41,829  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 43,036 48,697  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 42,396 15,831  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 14,148 16,929  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 14,352 9,594  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 104,858 114,715  
Revolving Loans Amortized Cost Basis 78,277 80,160  
Gross loans 320,339 327,755  
Nonperforming Loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 427 940  
Revolving Loans Amortized Cost Basis 91 565  
Gross loans 518 1,505  
Commercial real estate      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross loans 969,514 898,709  
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 831
Commercial real estate | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 122,876 138,085  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 139,821 159,152  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 169,379 136,914  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 128,073 64,352  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 59,070 74,782  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 331,671 309,794  
Revolving Loans Amortized Cost Basis 18,624 15,630  
Gross loans 969,514 898,709  
Commercial real estate | Pass | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 120,989 136,158  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 135,995 152,767  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 164,167 130,994  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 121,092 60,918  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 55,408 65,856  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 312,999 287,026  
Revolving Loans Amortized Cost Basis 17,276 13,636  
Gross loans 927,926 847,355  
Commercial real estate | Special Mention | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 1,887 1,927  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 3,826 6,385  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,880 5,920  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 6,639 1,904  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2,177 8,222  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 11,613 16,244  
Revolving Loans Amortized Cost Basis 1,303 1,994  
Gross loans 30,325 42,596  
Commercial real estate | Substandard | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,332 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 342 1,530  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 1,485 704  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 7,059 6,524  
Revolving Loans Amortized Cost Basis 45 0  
Gross loans 11,263 8,758  
Residential mortgage      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross loans 401,950 394,189  
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 3
Residential mortgage | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 28,017 39,734  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 37,495 27,694  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 23,450 41,624  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 38,994 15,155  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 13,812 11,318  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 35,098 29,949  
Revolving Loans Amortized Cost Basis 581 464  
Gross loans 177,447 165,938  
Residential mortgage | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 14,786 33,884  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 41,275 45,221  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 39,943 14,878  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 13,523 16,184  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 13,876 9,059  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 101,028 108,869  
Revolving Loans Amortized Cost Basis 72 156  
Gross loans 224,503 228,251  
Residential mortgage | Pass | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 27,887 39,146  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 35,566 27,612  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 23,095 41,031  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 38,848 14,758  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 13,446 10,492  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 31,784 27,274  
Revolving Loans Amortized Cost Basis 466 402  
Gross loans 171,092 160,715  
Residential mortgage | Special Mention | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 130 588  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,692 82  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 167 593  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 146 397  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 366 826  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 3,246 2,457  
Revolving Loans Amortized Cost Basis 115 62  
Gross loans 5,862 5,005  
Residential mortgage | Substandard | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 237 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 188 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 68 218  
Revolving Loans Amortized Cost Basis 0 0  
Gross loans 493 218  
Residential mortgage | Performing Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 14,786 33,884  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 41,275 45,221  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 39,943 14,878  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 13,523 16,184  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 13,876 9,059  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 100,601 108,021  
Revolving Loans Amortized Cost Basis 72 156  
Gross loans 224,076 227,403  
Residential mortgage | Nonperforming Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 427 848  
Revolving Loans Amortized Cost Basis 0 0  
Gross loans 427 848  
Commercial and industrial      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross loans 140,906 152,344  
Financing Receivable, Allowance for Credit Loss, Writeoff 138 110 238
Commercial and industrial | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 10,165 12,454  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 10,702 24,697  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 20,298 35,619  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 30,200 16,234  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 13,242 14,071  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 20,414 19,836  
Revolving Loans Amortized Cost Basis 35,885 29,433  
Gross loans 140,906 152,344  
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff 38 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff 100 110  
Revolving Loans Amortized Cost Basis 0 0  
Financing Receivable, Allowance for Credit Loss, Writeoff 138 110  
Commercial and industrial | Pass | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 10,000 12,319  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 10,067 24,259  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 19,584 34,830  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 29,673 15,614  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 13,162 13,922  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 18,976 17,780  
Revolving Loans Amortized Cost Basis 30,015 25,147  
Gross loans 131,477 143,871  
Commercial and industrial | Special Mention | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 165 128  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 109 303  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 246 290  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 192 529  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 78 140  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 459 459  
Revolving Loans Amortized Cost Basis 2,554 2,014  
Gross loans 3,803 3,863  
Commercial and industrial | Substandard | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 7  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 526 135  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 468 499  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 335 91  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 2 9  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 979 1,597  
Revolving Loans Amortized Cost Basis 3,316 2,272  
Gross loans 5,626 4,610  
Home equity lines of credit      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross loans 85,685 90,163  
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 33
Home equity lines of credit | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 300  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 294 99  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 92 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 507 493  
Revolving Loans Amortized Cost Basis 6,425 5,962  
Gross loans 7,318 6,854  
Home equity lines of credit | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 23  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 18 38  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 34 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 13  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 12 94  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 2,591 4,834  
Revolving Loans Amortized Cost Basis 75,712 78,307  
Gross loans 78,367 83,309  
Home equity lines of credit | Pass | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 300  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 294 99  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 92 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 501 131  
Revolving Loans Amortized Cost Basis 5,729 5,235  
Gross loans 6,616 5,765  
Home equity lines of credit | Special Mention | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0 0  
Revolving Loans Amortized Cost Basis 696 727  
Gross loans 696 727  
Home equity lines of credit | Substandard | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 6 362  
Revolving Loans Amortized Cost Basis 0 0  
Gross loans 6 362  
Home equity lines of credit | Performing Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 23  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 18 38  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 34 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 13  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 12 94  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 2,591 4,742  
Revolving Loans Amortized Cost Basis 75,621 77,745  
Gross loans 78,276 82,655  
Home equity lines of credit | Nonperforming Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 0 92  
Revolving Loans Amortized Cost Basis 91 562  
Gross loans 91 654  
Real estate construction      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross loans 76,773 84,341  
Financing Receivable, Allowance for Credit Loss, Writeoff 0 0 0
Real estate construction | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 21,227 19,766  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 24,631 40,223  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 12,819 3,953  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,209 1,252  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 298 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,789 3,398  
Revolving Loans Amortized Cost Basis 6,131 8,003  
Gross loans 68,104 76,595  
Real estate construction | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 6,486 5,571  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 222 753  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 725 175  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 160 210  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 188 170  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 888 867  
Revolving Loans Amortized Cost Basis 0 0  
Gross loans 8,669 7,746  
Real estate construction | Pass | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 21,227 19,766  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 24,463 39,758  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 7,719 3,953  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,209 1,160  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 298 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 1,060 2,604  
Revolving Loans Amortized Cost Basis 6,086 8,003  
Gross loans 62,062 75,244  
Real estate construction | Special Mention | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 168 465  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 5,100 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 92  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 667 725  
Revolving Loans Amortized Cost Basis 45 0  
Gross loans 5,980 1,282  
Real estate construction | Substandard | Internally Risk Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 0 0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 0 0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 0 0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 0 0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 0 0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 62 69  
Revolving Loans Amortized Cost Basis 0 0  
Gross loans 62 69  
Real estate construction | Performing Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 6,486 5,571  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 222 753  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 725 175  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 160 210  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 188 170  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 888 867  
Revolving Loans Amortized Cost Basis 0 0  
Gross loans 8,669 7,746  
Consumer      
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross loans 9,318 9,954  
Financing Receivable, Allowance for Credit Loss, Writeoff 218 396 $ 181
Consumer | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 2,000 2,351  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,521 2,685  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,694 778  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 465 522  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 276 271  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 778 1,085  
Revolving Loans Amortized Cost Basis 2,584 2,262  
Gross loans 9,318 9,954  
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff 0 48  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff 4 83  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff 9 42  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff 0 55  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff 1 23  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff 7 78  
Revolving Loans Amortized Cost Basis 197 67  
Financing Receivable, Allowance for Credit Loss, Writeoff 218 396  
Consumer | Performing Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year 2,000 2,351  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,521 2,685  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,694 778  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 465 522  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 276 271  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 778 1,085  
Revolving Loans Amortized Cost Basis 2,584 2,259  
Gross loans $ 9,318 9,951  
Consumer | Nonperforming Loans | Performance Rated      
Financing Receivable, Credit Quality Indicator [Line Items]      
Financing Receivable, Year One, Originated, Current Fiscal Year   0  
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year   0  
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year   0  
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year   0  
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year   0  
Financing Receivable, Originated, More than Five Years before Current Fiscal Year   0  
Revolving Loans Amortized Cost Basis   3  
Gross loans   $ 3  
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Change in Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Business Assets    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss $ 2,307 $ 1,004
Business Assets | Commercial real estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Business Assets | Residential mortgage    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Business Assets | Commercial and industrial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 2,307 1,004
Business Assets | Home equity lines of credit    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Real Estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 3,564 2,007
Real Estate | Commercial real estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 3,564 1,479
Real Estate | Residential mortgage    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 343
Real Estate | Commercial and industrial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss 0 0
Real Estate | Home equity lines of credit    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Individually Evaluated for Credit Loss $ 0 $ 185
v3.25.0.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES (Allowance For Loan Losses And Recorded Investment In Financing Receivables) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance $ 19,969 $ 17,861 $ 19,033
Charge-offs (356) (506) (1,286)
Recoveries 104 136 114
Financing Receivable, Credit Loss, Expense (Reversal) (2,763) 844  
Ending balance 17,280 19,969 17,861
Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (2,437) 860 0
Unfunded Loan Commitment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (326) (16) 0
Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   1,618  
Ending balance     1,618
Commercial real estate      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 12,010 10,016 10,716
Charge-offs 0 0 (831)
Recoveries 0 0 0
Ending balance 10,578 12,010 10,016
Commercial real estate | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (1,432) 888 131
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   1,106  
Ending balance     1,106
Residential mortgage      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 3,303 3,029 3,235
Charge-offs 0 0 (3)
Recoveries 0 0 5
Ending balance 2,976 3,303 3,029
Residential mortgage | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (327) (23) (208)
Residential mortgage | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   297  
Ending balance     297
Commercial and industrial      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 2,048 2,848 3,176
Charge-offs (138) (110) (238)
Recoveries 26 64 58
Ending balance 1,416 2,048 2,848
Commercial and industrial | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (520) 8 (148)
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   (762)  
Ending balance     (762)
Home equity lines of credit      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 397 347 501
Charge-offs 0 0 (33)
Recoveries 0 0 22
Ending balance 294 397 347
Home equity lines of credit | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (103) 33 (143)
Home equity lines of credit | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   17  
Ending balance     17
Real estate construction      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 2,070 1,000 616
Charge-offs 0 0 0
Recoveries 0 0 0
Ending balance 1,918 2,070 1,000
Real estate construction | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) (152) (277) 384
Real estate construction | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   1,347  
Ending balance     1,347
Consumer      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 141 376 408
Charge-offs (218) (396) (181)
Recoveries 78 72 29
Ending balance 98 141 376
Consumer | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) 97 231 120
Consumer | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   (142)  
Ending balance     (142)
Unallocated      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 0 245 381
Charge-offs 0 0 0
Recoveries 0 0 0
Ending balance 0 0 245
Unallocated | Financing Receivable Excluding Unfunded Commitments      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Financing Receivable, Credit Loss, Expense (Reversal) $ 0 0 (136)
Unallocated | Cumulative Effect, Period of Adoption, Adjustment      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance   $ (245)  
Ending balance     $ (245)
v3.25.0.1
PREMISES AND EQUIPMENT (Table) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
Premises and equipment, gross $ 53,599 $ 53,561
Accumulated depreciation (28,145) (27,278)
Premises and equipment, net 25,454 26,283
Land    
Property, Plant and Equipment [Line Items]    
Premises and equipment, gross 5,418 5,418
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Premises and equipment, gross 33,390 33,249
Furniture and equipment    
Property, Plant and Equipment [Line Items]    
Premises and equipment, gross 14,717 14,813
Construction in process    
Property, Plant and Equipment [Line Items]    
Premises and equipment, gross $ 74 $ 81
v3.25.0.1
PREMISES AND EQUIPMENT (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment [Abstract]      
Depreciation $ 1,800 $ 1,900 $ 2,300
v3.25.0.1
INVESTMENTS IN LOW-INCOME HOUSING PARTNERSHIPS (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
Partnership
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Real Estate Partnership Investment Subsidiaries, Net Income (Loss) before Tax [Abstract]      
Number of limited partnerships in low-income properties | Partnership 2    
Investments in low-income housing partnerships $ 877 $ 1,003  
Net gains on sales of low income housing partnership $ 0 $ 0 $ 421
v3.25.0.1
LEASES (Supplemental Balance Sheet Information) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Leases [Abstract]    
Operating Leases: Right of use asset $ 2,663 $ 2,615
Operating Leases: Lease liabilities $ 2,764 $ 2,615
Operating Leases: Weighted average remaining lease term 5 years 8 months 12 days 4 years 8 months 12 days
Operating Leases: Weighted average discount rate, Percent 2.63% 5.61%
v3.25.0.1
LEASES (Future Minimum Rental Payments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Lessee, Operating Lease, Liability, Payment, Due [Abstract]    
2025 $ 712  
2026 592  
2027 469  
2028 434  
2029 294  
Thereafter 488  
Total minimum lease payments 2,989  
Amount representing interest 225  
Present value of net minimum lease payments $ 2,764 $ 2,615
v3.25.0.1
LEASES (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Leases [Abstract]      
Rental expense $ 917,000 $ 924,000 $ 964,000
v3.25.0.1
GOODWILL AND INTANGIBLE ASSETS (Carrying Value And Accumulated Amortization Of The Intangible Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]      
Goodwill $ 44,185 $ 44,185 $ 44,185
Gross Carrying Amount of Intangible Asset 22,309 22,309  
Accumulated Amortization of Intangible Asset 14,471 13,227  
Amortization of Intangible Assets 1,244 1,424 $ 1,492
Core Deposits      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount of Intangible Asset $ 5,978 5,978  
Intangible asset amortization life 10 years    
Accumulated Amortization of Intangible Asset $ 4,813 4,271  
RIG | Customer Lists      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount of Intangible Asset 16,331 16,331  
Accumulated Amortization of Intangible Asset $ 9,658 $ 8,956  
Minimum | Customer Lists      
Finite-Lived Intangible Assets [Line Items]      
Intangible asset amortization life 8 years    
Maximum | Customer Lists      
Finite-Lived Intangible Assets [Line Items]      
Intangible asset amortization life 15 years    
v3.25.0.1
GOODWILL AND INTANGIBLE ASSETS (Expected Amortization Expense) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Business Combinations [Abstract]      
2025 $ 1,115    
2026 1,004    
2027 857    
2028 711    
2029 646    
Thereafter 3,505    
Total 7,838    
Intangible assets amortization $ 1,244 $ 1,424 $ 1,492
v3.25.0.1
DEPOSITS (Schedule Of Deposits) (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Interest-Bearing Deposit Liabilities [Abstract]    
Noninterest-bearing demand deposits $ 451,503,000 $ 500,332,000
Interest-bearing demand deposits 505,096,000 524,289,000
Deposits, Money Market Deposits 251,667,000 264,907,000
Deposits, Savings Deposits 311,207,000 340,134,000
Total demand and savings 1,519,473,000 1,629,662,000
Time 273,028,000 232,151,000
Total Deposits 1,792,501,000 1,861,813,000
Brokered deposits $ 24,100,000 $ 0
v3.25.0.1
DEPOSITS (Schedule Of Maturities Of Time Certificates Of Deposits) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deposit Liability [Line Items]    
Time Deposits $ 273,028 $ 232,151
Less Than $250,000    
Deposit Liability [Line Items]    
2025 194,777  
2026 24,917  
2027 7,585  
2028 1,940  
2029 2,436  
Thereafter 3  
Time Deposits 231,658  
More Than $250,000    
Deposit Liability [Line Items]    
2025 40,592  
2026 778  
2027 0  
2028 0  
2029 0  
Thereafter 0  
Time Deposits $ 41,370  
v3.25.0.1
BORROWINGS (Schedule of Short-term Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Short-term Debt [Line Items]    
Amount $ 15,826 $ 56,882
Rate 0.23% 3.05%
Federal Home Loan Bank Stock $ 10,600  
Line of Credit Facility, Current Borrowing Capacity 192,000 $ 192,000
Securities Sold under Agreements to Repurchase    
Short-term Debt [Line Items]    
Amount $ 15,826 $ 26,882
Rate 0.23% 0.15%
FHLB overnight advance    
Short-term Debt [Line Items]    
Amount $ 0 $ 30,000
Rate 0.00% 5.64%
v3.25.0.1
BORROWINGS (Schedule of Maturities of Long-term Debt) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 30, 2021
Mar. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]        
Long-term debt     $ 255,333,000 $ 195,292,000
Maximum borrowings from FHLB     926,500,000  
Available borrowings from FHLB     690,400,000  
FHLB fixed-rate advances maturing year two, amount     $ 80,000,000  
FHLB fixed-rate advances maturing year two, rate     4.71%  
FHLB fixed-rate advances maturing year three, amount     $ 90,000,000 $ 80,000,000
FHLB fixed-rate advances maturing year three, rate     4.55% 4.71%
FHLB fixed-rate advances maturing year four, amount     $ 35,000,000 $ 60,000,000
FHLB fixed-rate advances maturing year four, rate     4.23% 4.64%
FHLB fixed-rate advances maturing year five, amount     $ 30,000,000 $ 35,000,000
FHLB fixed-rate advances maturing year five, rate     4.25% 4.23%
Long-term debt, Rate     4.52% 4.62%
Federal Home Loan Bank Stock     $ 10,600,000  
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged     1,330,000,000  
Trust preferred subordinated debt        
Debt Instrument [Line Items]        
Long-term debt     $ 15,000,000 $ 15,000,000
Effective rate, percentage     4.00% 4.00%
Interest rate percentage 4.00%      
Basis spread on prime rate, percentage 3.29%      
Subordinated debt issued $ 15,000,000      
Debt Instrument, Issuance Price, Percentage 100.00%      
Trust Preferred Subordinated Debt, FCBI | Trust preferred subordinated debt        
Debt Instrument [Line Items]        
Long-term debt [1]     $ 5,333,000 $ 5,292,000
Effective rate, percentage     6.25% 7.28%
Basis spread on prime rate, percentage     1.63%  
Subordinated debt issued     $ 6,000,000.0  
Trust Preferred Subordinated Debt, FCBI | Trust preferred subordinated debt | Subsequent Event        
Debt Instrument [Line Items]        
Basis spread on prime rate, percentage   6.25%    
[1] Net of purchase accounting fair value mark.
v3.25.0.1
FAIR VALUE MEASUREMENTS (Fair Value Measurements, Recurring and Nonrecurring) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value $ 393,975 $ 451,693    
Equity securities with readily determinable fair values 919 928    
Investment securities available for sale, at estimated fair value 393,975 451,693    
Equity securities with readily determinable fair values 919 928 $ 1,719 $ 2,609
Loans held for sale 426 280    
Foreclosed assets held for resale 438 467    
Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Equity securities with readily determinable fair values 919 928    
Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 393,975 451,693    
Equity securities with readily determinable fair values 0 0    
Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Equity securities with readily determinable fair values 0 0    
U.S. Government and agencies        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 143,193 156,795    
Mortgage-backed securities, residential        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 138,540 158,830    
Corporate bonds        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 15,803 29,694    
Collateralized Mortgage-Backed Securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 35,654 41,084    
Commercial Mortgage-Backed Securities        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 60,785 65,290    
Recurring | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 393,975 451,693    
Equity securities with readily determinable fair values 919 928    
Loans held for sale 426 280    
Recurring | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Equity securities with readily determinable fair values 919 928    
Loans held for sale 0 0    
Recurring | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 393,975 451,693    
Equity securities with readily determinable fair values 0 0    
Loans held for sale 426 280    
Recurring | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Equity securities with readily determinable fair values 0 0    
Loans held for sale 0 0    
Recurring | U.S. Government and agencies | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 143,193 156,795    
Recurring | U.S. Government and agencies | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | U.S. Government and agencies | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 143,193 156,795    
Recurring | U.S. Government and agencies | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Mortgage-backed securities, residential | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 138,540 158,830    
Recurring | Mortgage-backed securities, residential | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Mortgage-backed securities, residential | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 138,540 158,830    
Recurring | Mortgage-backed securities, residential | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Corporate bonds | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 15,803 29,694    
Recurring | Corporate bonds | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Corporate bonds | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 15,803 29,694    
Recurring | Corporate bonds | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Collateralized Mortgage-Backed Securities | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 35,654 41,084    
Recurring | Collateralized Mortgage-Backed Securities | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Collateralized Mortgage-Backed Securities | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 35,654 41,084    
Recurring | Collateralized Mortgage-Backed Securities | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Commercial Mortgage-Backed Securities | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 60,785 65,290    
Recurring | Commercial Mortgage-Backed Securities | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Recurring | Commercial Mortgage-Backed Securities | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 60,785 65,290    
Recurring | Commercial Mortgage-Backed Securities | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investment securities available for sale, at estimated fair value 0 0    
Nonrecurring | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Foreclosed assets held for resale 438 467    
Nonrecurring | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Foreclosed assets held for resale 0 0    
Nonrecurring | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Foreclosed assets held for resale 0 0    
Nonrecurring | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Foreclosed assets held for resale 438 467    
Collateral dependent impaired loan | Nonrecurring | Fair Value        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans 1,690 242    
Collateral dependent impaired loan | Nonrecurring | Level 1        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans 0 0    
Collateral dependent impaired loan | Nonrecurring | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans 0 0    
Collateral dependent impaired loan | Nonrecurring | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Impaired loans $ 1,690 $ 242    
v3.25.0.1
FAIR VALUE MEASUREMENTS (Fair Value Inputs, Assets, Quantitative Information) (Details) - Nonrecurring - Fair Value Estimate
$ in Thousands
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Collateral dependent impaired loan    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans $ 1,690 $ 242
Real Estate Acquired Through Foreclosure    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans $ 438 $ 467
Measurement Input, Discount Rate | Collateral dependent impaired loan    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, Fair Value Measurement Input 0.47 0.94
Measurement Input, Discount Rate | Collateral dependent impaired loan | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, Fair Value Measurement Input 0.16 0.33
Measurement Input, Discount Rate | Collateral dependent impaired loan | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, Fair Value Measurement Input 1 1
Measurement Input, Discount Rate | Real Estate Acquired Through Foreclosure    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, Fair Value Measurement Input 0.50 0.56
Measurement Input, Discount Rate | Real Estate Acquired Through Foreclosure | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, Fair Value Measurement Input 0.17  
Measurement Input, Discount Rate | Real Estate Acquired Through Foreclosure | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Assets, Fair Value Measurement Input 0.53  
v3.25.0.1
FAIR VALUE MEASUREMENTS (Fair Value, by Balance Sheet Grouping) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financial assets:        
Interest-bearing deposits with banks $ 30,910 $ 44,516    
Equity securities with readily determinable fair values 919 928 $ 1,719 $ 2,609
Investment securities available for sale 393,975 451,693    
Investment securities held to maturity 56,924 59,057    
Restricted investment in bank stocks 10,853 9,677    
Carrying Amount        
Financial assets:        
Cash and due from banks 16,352 21,442    
Interest-bearing deposits with banks 30,910 44,516    
Equity securities with readily determinable fair values 919 928    
Investment securities available for sale 393,975 451,693    
Investment securities held to maturity 64,578 64,600    
Loans held for sale 426 280    
Loans, net 1,665,630 1,608,019    
Accrued interest receivable 8,189 8,080    
Restricted investment in bank stocks 10,853 9,677    
Financial liabilities:        
Demand deposits, savings, and money markets 1,519,473 1,629,662    
Time deposits 273,028 232,151    
Securities sold under repurchase agreements 15,826 26,882    
FHLB Advances 235,000 205,000    
Trust preferred and subordinated debt 20,333 20,292    
Accrued interest payable 1,551 794    
Fair Value        
Financial assets:        
Cash and due from banks 16,352 21,442    
Interest-bearing deposits with banks 30,910 44,516    
Equity securities with readily determinable fair values 919 928    
Investment securities available for sale 393,975 451,693    
Investment securities held to maturity 56,924 59,057    
Loans held for sale 426 280    
Loans, net 1,635,351 1,562,703    
Accrued interest receivable 8,189 8,080    
Financial liabilities:        
Demand deposits, savings, and money markets 1,269,889 1,391,709    
Time deposits 267,336 221,770    
Securities sold under repurchase agreements 16,435 23,666    
FHLB Advances 235,290 206,950    
Trust preferred and subordinated debt 18,420 16,992    
Accrued interest payable 1,551 794    
Level 1        
Financial assets:        
Cash and due from banks 16,352 7,063    
Interest-bearing deposits with banks 30,910 44,516    
Equity securities with readily determinable fair values 919 928    
Investment securities available for sale 0 0    
Investment securities held to maturity 0 0    
Loans held for sale 0 0    
Loans, net 0 0    
Accrued interest receivable 0 0    
Restricted investment in bank stocks 0 0    
Financial liabilities:        
Demand deposits, savings, and money markets 0 0    
Time deposits 0 0    
Securities sold under repurchase agreements 0 0    
FHLB Advances 0 0    
Trust preferred and subordinated debt 0 0    
Accrued interest payable 0 0    
Level 2        
Financial assets:        
Cash and due from banks 0 14,379    
Interest-bearing deposits with banks 0 0    
Equity securities with readily determinable fair values 0 0    
Investment securities available for sale 393,975 451,693    
Investment securities held to maturity 56,924 59,057    
Loans held for sale 426 280    
Loans, net 0 0    
Accrued interest receivable 8,189 8,080    
Financial liabilities:        
Demand deposits, savings, and money markets 1,269,889 1,391,709    
Time deposits 267,336 221,770    
Securities sold under repurchase agreements 16,435 23,666    
FHLB Advances 235,290 206,950    
Trust preferred and subordinated debt 18,420 16,992    
Accrued interest payable 1,551 794    
Level 3        
Financial assets:        
Cash and due from banks 0 0    
Interest-bearing deposits with banks 0 0    
Equity securities with readily determinable fair values 0 0    
Investment securities available for sale 0 0    
Investment securities held to maturity 0 0    
Loans held for sale 0 0    
Loans, net 1,635,351 1,562,703    
Accrued interest receivable 0 0    
Restricted investment in bank stocks 0 0    
Financial liabilities:        
Demand deposits, savings, and money markets 0 0    
Time deposits 0 0    
Securities sold under repurchase agreements 0 0    
FHLB Advances 0 0    
Trust preferred and subordinated debt 0 0    
Accrued interest payable $ 0 $ 0    
v3.25.0.1
RETIREMENT PLANS (Schedule of Benefit Plan Funded Status) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year $ 31,494 $ 30,226  
Service cost 428 495 $ 777
Interest cost 1,494 1,493 1,052
Actuarial (gain) loss (1,544) 983  
Benefits paid (1,830) (1,703)  
Projected benefit obligation at end of year 30,042 31,494 30,226
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 46,427 43,119  
Actual return on plan assets 1,806 5,011  
Benefits paid (1,830) (1,703)  
Fair value of plan assets at end of year 46,403 46,427 43,119
Funded Status, included in other assets 16,361 14,933  
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax $ 4,539 $ 5,120 $ 6,887
v3.25.0.1
RETIREMENT PLANS (Assumptions Used To Determine The Benefit Obligation and Net Periodic Benefit) (Details)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Postemployment Benefits [Abstract]      
Assumptions Used Calculating Benefit Obligation: Discount rate 5.50% 4.90%  
Assumptions Used Calculating Benefit Obligation: Rate of compensation increase 3.50% 3.50%  
Discount rate 4.90% 5.10% 2.75%
Expected long-term rate of return on plan assets 6.75% 6.75% 6.75%
Rate of compensation increase 3.50% 3.50% 3.50%
v3.25.0.1
RETIREMENT PLANS - Components of Net Periodic Cost (Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Retirement Benefits [Abstract]      
Service cost $ 428 $ 495 $ 777
Interest cost 1,494 1,493 1,052
Expected return on plan assets (2,848) (2,653) (3,136)
Recognized net actuarial loss 78 392 407
Net Periodic Benefit Income (848) (273) (900)
Net gain (503) (1,375) (491)
Amortization of net loss (78) (392) (407)
Total recognized in other comprehensive income (loss) (581) (1,767) (898)
Total recognized in net periodic benefit cost (income) and other comprehensive income $ (1,429) $ (2,040) $ (1,798)
Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Interest cost    
Defined Benefit Plan Net Periodic Benefit Cost Credit Expected Return Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Expected return on plan assets    
Defined Benefit Plan, Net Periodic Benefit Cost, Credit, Immediate Recognition Of Actuarial Gain Loss Statement Of Income Or Comprehensive Income, Extensible List, Not Disclosed Flag Recognized net actuarial loss    
Defined Benefit Plan Net Periodic Benefit Cost Credit Amortization Of Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Amortization of net loss    
v3.25.0.1
RETIREMENT PLANS (Comparison of Obligations of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Retirement Benefits [Abstract]      
Defined Benefit Plan, Benefit Obligation $ 30,042 $ 31,494 $ 30,226
Defined Benefit Plan, Plan Assets, Amount $ 46,403 $ 46,427 $ 43,119
v3.25.0.1
RETIREMENT PLANS (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Corporation common stock included in equity securities, percentage of total plan assets 8.00% 8.00%  
Employee contribution percentage, maximum 100.00%    
Additional compensation contributed to plan 50.00%    
Percentage over employees' gross pay 2.00%    
Balance accrued included in other liabilities $ 5,100 $ 4,500  
Annual expense included in salaries and benefits expense $ 946 953 $ 628
Banking Subsidiary      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer Match Percentage of Income 3.00%    
Employer Contributions to and Expenses for the Plan $ 1,100 999 901
Insurance Subsidiary      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer Contributions to and Expenses for the Plan $ 202 $ 183 $ 157
Non-highly compensated employees | Insurance Subsidiary      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer Match Percentage of Income 6.00%    
Highly compensated employees | Insurance Subsidiary      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer Match Percentage of Income 3.00%    
v3.25.0.1
RETIREMENT PLANS (Future Benefit Payments) (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Postemployment Benefits [Abstract]  
2025 $ 2,080
2026 2,110
2027 2,090
2028 2,100
2029 2,120
2030-2034 $ 11,040
v3.25.0.1
RETIREMENT PLANS (Pension Plan Weighted-Average Assets' Allocations) (Details)
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average asset allocation 100.00% 100.00%
Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average asset allocation 42.00% 43.00%
Debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average asset allocation 55.00% 54.00%
Real estate    
Defined Benefit Plan Disclosure [Line Items]    
Weighted-average asset allocation 3.00% 3.00%
v3.25.0.1
RETIREMENT PLANS (Fair Value Measurements) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 46,403 $ 46,427 $ 43,119
Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 19,286 20,123  
Debt securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 25,730 24,891  
Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,387 1,413  
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,565 3,876  
Level 1 | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,565 3,876  
Level 1 | Debt securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Level 1 | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 42,838 42,551  
Level 2 | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 15,721 16,247  
Level 2 | Debt securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 25,730 24,891  
Level 2 | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,387 1,413  
Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Level 3 | Equity securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Level 3 | Debt securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Level 3 | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 0 $ 0  
v3.25.0.1
INCOME TAXES (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Current:      
Federal $ 6,780 $ 7,924 $ 7,461
State 1,014 755 1,259
Total 7,794 8,679 8,720
Deferred:      
Federal 806 (534) 592
State (27) 16 (113)
Deferred Federal, State and Local, Tax Expense (Benefit) 779 (518) 479
Provision for income taxes $ 8,573 $ 8,161 $ 9,199
v3.25.0.1
INCOME TAXES (Schedule of Reconciliations of the Statutory Federal Income Tax) (Details)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Disclosure [Abstract]      
Federal income tax at statutory rate 21.00% 21.00% 21.00%
State income taxes, net of federal benefit 1.90% 1.50% 1.80%
Tax-exempt income (1.00%) (1.30%) (1.10%)
Earnings on investment in bank-owned life insurance (1.00%) (1.00%) (0.70%)
Tax credit benefits 0.00% 0.00% (0.60%)
Nondeductible merger-related costs 0.70% 0.00% 0.00%
Other (0.40%) 0.30% 0.10%
Effective Income Tax Rate, Total 21.20% 20.50% 20.50%
v3.25.0.1
INCOME TAXES (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Jan. 01, 2023
Deferred tax assets:      
Investment securities available for sale $ 11,178 $ 12,052  
Allowance for credit losses 3,909 4,533  
Accrued deferred compensation 1,436 1,166  
Deferred director fees 1,153 1,097  
Defined benefit pension plan 1,031 1,162  
Other 837 783  
Lease liability 592 742  
Allowance for unfunded commitments 315 390  
Nonaccrual interest 246 740  
Accumulated depreciation 59 3  
Deferred tax assets: Total 20,756 22,668  
Deferred tax liabilities:      
Prepaid defined benefit pension plan cost 4,729 4,552  
Goodwill and intangible assets, net 1,449 1,439  
Right of use asset 592 742  
Prepaid expenses 50 67  
Purchase accounting 25 25  
Deferred loan fees (46)    
Deferred loan fees   57  
Deferred tax liabilities: Total 6,799 6,882  
Net deferred tax asset $ 13,957 $ 15,786 $ 17,718
v3.25.0.1
REGULATORY MATTERS (The Actual and Required Capital Amounts and Ratios) (Details)
$ in Thousands
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Undistributed earnings of the Bank available for distribution as dividends without prior regulatory approval $ 51,900  
Corporation    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual, Tier 1 leverage ratio (to average assets), Amount $ 303,105 $ 280,135
Actual, Tier 1 leverage ratio (to average assets), Ratio 0.1252 0.1157
For Capital Adequacy Purposes, Tier 1 leverage ratio (to average assets), Amount (greater than or equal to) [1] $ 96,871 $ 96,822
For Capital Adequacy Purposes, Tier 1 leverage ratio (to average assets), Ratio (greater than or equal to) [1] 0.040 0.040
Actual, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Amount $ 297,772 $ 274,844
Actual, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio 0.1627 0.1516
For Capital Adequacy Purposes, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) [1] $ 82,343 $ 81,562
For Capital Adequacy Purposes, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) [1] 4.50% 4.50%
Actual, Tier 1 risk-based capital ratio (to risk-weighted assets), Amount $ 303,105 $ 280,135
Actual, Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio 0.1656 0.1546
For Capital Adequacy Purposes, Tier 1 risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) [1] $ 109,791 $ 108,749
For Capital Adequacy Purposes, Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) [1] 0.060 0.060
Actual, Total risk-based capital ratio (to risk-weighted assets), Amount $ 335,949 $ 315,564
Actual, Total risk-based capital ratio (to risk-weighted assets), Ratio 0.1836 0.1741
For Capital Adequacy Purposes, Total risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) [1] $ 146,388 $ 144,999
For Capital Adequacy Purposes, Total risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) [1] 0.080 0.080
Bank    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Actual, Tier 1 leverage ratio (to average assets), Amount $ 290,567 $ 268,314
Actual, Tier 1 leverage ratio (to average assets), Ratio 0.1203 0.1112
For Capital Adequacy Purposes, Tier 1 leverage ratio (to average assets), Amount (greater than or equal to) [1] $ 96,652 $ 96,494
For Capital Adequacy Purposes, Tier 1 leverage ratio (to average assets), Ratio (greater than or equal to) [1] 0.040 0.040
To be Well Capitalized under Prompt Corrective Action Provisions, Tier 1 leverage ratio (to average assets), Amount (greater than or equal to) $ 120,815 $ 120,618
To be Well Capitalized under Prompt Corrective Action Provisions, Tier 1 leverage ratio (to average assets), Ratio (greater than or equal to) 0.050 0.050
Actual, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Amount $ 290,567 $ 268,314
Actual, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio 0.1603 0.1486
For Capital Adequacy Purposes, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) [1] $ 81,565 $ 81,260
For Capital Adequacy Purposes, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) [1] 4.50% 4.50%
To be Well Capitalized under Prompt Corrective Action Provisions, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) $ 117,816 $ 117,375
To be Well Capitalized under Prompt Corrective Action Provisions, Common Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) 6.50% 6.50%
Actual, Tier 1 risk-based capital ratio (to risk-weighted assets), Amount $ 290,567 $ 268,314
Actual, Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio 0.1603 0.1486
For Capital Adequacy Purposes, Tier 1 risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) [1] $ 108,753 $ 108,346
For Capital Adequacy Purposes, Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) [1] 0.060 0.060
To be Well Capitalized under Prompt Corrective Action Provisions, Tier 1 risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) $ 145,005 $ 144,462
To be Well Capitalized under Prompt Corrective Action Provisions, Tier 1 risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) 0.080 0.080
Actual, Total risk-based capital ratio (to risk-weighted assets), Amount $ 308,412 $ 288,742
Actual, Total risk-based capital ratio (to risk-weighted assets), Ratio 0.1702 0.1599
For Capital Adequacy Purposes, Total risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) [1] $ 145,005 $ 144,462
For Capital Adequacy Purposes, Total risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) [1] 0.080 0.080
To be Well Capitalized under Prompt Corrective Action Provisions, Total risk-based capital ratio (to risk-weighted assets), Amount (greater than or equal to) $ 181,256 $ 180,577
To be Well Capitalized under Prompt Corrective Action Provisions, Total risk-based capital ratio (to risk-weighted assets), Ratio (greater than or equal to) 0.100 0.100
[1] Amounts and ratios do not include capital conservation buffer.
v3.25.0.1
COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Loan to value ratio requirement (no greater than) 80.00%  
Line of Credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commercial line of credit borrowing capacity $ 1,500  
Unsecured Debt | Line of Credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commercial line of credit borrowing capacity 5,000  
Commitments to Extend Credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, off-Balance-Sheet Risks, Face Amount, Liability 372,839 $ 403,300
Standby Letters of Credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, off-Balance-Sheet Risks, Face Amount, Liability $ 15,103 $ 21,029
v3.25.0.1
EARNINGS PER SHARE (Details) - $ / shares
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Earnings Per Share [Abstract]      
Weighted average shares outstanding, basic (in shares) 8,503,473 8,507,803 8,623,012
Unvested shares (in shares) 33,492 28,322 0
Weighted average shares outstanding, diluted (in shares) 8,536,965 8,536,125 8,623,012
Basic (in USD per share) $ 3.75 $ 3.72 $ 4.15
Diluted (in USD per share) $ 3.73 $ 3.71 $ 4.15
v3.25.0.1
STOCKHOLDERS' EQUITY (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accumulated Other Comprehensive Loss [Line Items]      
Beginning Balance $ 277,461 $ 245,042 $ 272,114
Unrealized gains (losses) arising during the period, net of income tax expense (benefit) of $633, $1,814 and $(14,499) respectively 1,992 6,814 (46,441)
Reclassification adjustment for net AFS investment securities (gains) losses included in net income, net of income tax effect of $(16), $1,188 and $55, respectively (53) 4,052 193
Amortization of unrealized losses on AFS investment securities transferred to HTM, net of income tax expense of $254, $203 and $211, respectively 853 916 739
Amortization of pension net loss, net of income tax expense of $18, $76 and $90 60 258 317
Unrecognized net gain, net of income tax expense of $114, $312 and $15, respectively 389 1,063 476
Other comprehensive income (loss), net of taxes 3,241 13,103 (48,467)
Ending Balance 303,273 277,461 245,042
Unrealized (Losses) Gains on Securities      
Accumulated Other Comprehensive Loss [Line Items]      
Beginning Balance (40,952) (52,734) (3,474)
Unrealized gains (losses) arising during the period, net of income tax expense (benefit) of $633, $1,814 and $(14,499) respectively 1,992 6,814 (50,192)
Reclassification adjustment for net AFS investment securities (gains) losses included in net income, net of income tax effect of $(16), $1,188 and $55, respectively (53) 4,052 193
Amortization of unrealized losses on AFS investment securities transferred to HTM, net of income tax expense of $254, $203 and $211, respectively 853 916 739
Amortization of pension net loss, net of income tax expense of $18, $76 and $90 0 0 0
Unrecognized net gain, net of income tax expense of $114, $312 and $15, respectively 0 0 0
Other comprehensive income (loss), net of taxes 2,792 11,782 (49,260)
Ending Balance (38,160) (40,952) (52,734)
Pension Liability      
Accumulated Other Comprehensive Loss [Line Items]      
Beginning Balance (3,957) (5,278) (6,071)
Unrealized gains (losses) arising during the period, net of income tax expense (benefit) of $633, $1,814 and $(14,499) respectively 0 0 0
Reclassification adjustment for net AFS investment securities (gains) losses included in net income, net of income tax effect of $(16), $1,188 and $55, respectively 0 0 0
Amortization of unrealized losses on AFS investment securities transferred to HTM, net of income tax expense of $254, $203 and $211, respectively 0 0 0
Amortization of pension net loss, net of income tax expense of $18, $76 and $90 60 258 317
Unrecognized net gain, net of income tax expense of $114, $312 and $15, respectively 389 1,063 476
Other comprehensive income (loss), net of taxes 449 1,321 793
Ending Balance (3,508) (3,957) (5,278)
Accumulated Other Comprehensive Loss      
Accumulated Other Comprehensive Loss [Line Items]      
Beginning Balance (44,909) (58,012) (9,545)
Unrealized gains (losses) arising during the period, net of income tax expense (benefit) of $633, $1,814 and $(14,499) respectively 1,992 6,814 (50,192)
Reclassification adjustment for net AFS investment securities (gains) losses included in net income, net of income tax effect of $(16), $1,188 and $55, respectively (53) 4,052 193
Amortization of unrealized losses on AFS investment securities transferred to HTM, net of income tax expense of $254, $203 and $211, respectively 853 916 739
Amortization of pension net loss, net of income tax expense of $18, $76 and $90 60 258 317
Unrecognized net gain, net of income tax expense of $114, $312 and $15, respectively 389 1,063 476
Other comprehensive income (loss), net of taxes 3,241 13,103 (48,467)
Ending Balance $ (41,668) $ (44,909) $ (58,012)
v3.25.0.1
STOCKHOLDERS' EQUITY - Narrative (Details)
$ in Thousands
 12 Months Ended
Feb. 24, 2019
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Dec. 31, 2022
USD ($)
shares
Oct. 18, 2022
shares
Mar. 08, 2019
shares
Mar. 20, 2018
shares
Stockholders' Equity [Line Items]              
Shares issued from the dividend reinvestment plan (in shares)   21,750 20,361 20,908      
Treasury stock acquired (in shares)   6,842 61,066 206,929      
Common stock shares issued | $   $ 832 $ 721 $ 713      
Compensation expense for restricted shares | $   $ 1,263 $ 1,004 $ 729      
Shares purchased under plan (in shares)   67,908          
ACNB Corporation 2018 Omnibus Stock Incentive Plan | Restricted Stock              
Stockholders' Equity [Line Items]              
Awards authorized (in shares)             400,000
Shares issued under plan since inception (in shares)   138,019          
Non-vested number of shares (in shares)   38,438          
ACNB Corporation 2009 Restricted Stock Plan              
Stockholders' Equity [Line Items]              
2009 Restricted Stock plan, expiration period 10 years            
2009 Restricted Stock Plan, number of shares authorized, but not issued (in shares)           174,055  
Stock Repurchase Plan              
Stockholders' Equity [Line Items]              
Authorized (in shares)         255,575    
Percentage of shares authorized         0.03    
v3.25.0.1
ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION (Statements of Condition) (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
ASSETS      
Cash $ 16,352 $ 21,442  
Investments in subsidiaries 877 1,003  
Securities and other assets 47,882 54,186  
Total Assets 2,394,830 2,418,847 $ 2,525,507
LIABILITIES AND STOCKHOLDERS’ EQUITY      
Long-term debt 255,333 195,292  
Other liabilities 23,739 23,065  
Total Liabilities and Stockholders’ Equity 2,394,830 2,418,847  
Corporation      
ASSETS      
Cash 19,826 16,647  
Securities and other assets 191 1,107  
Receivable from banking subsidiary 63 1,355  
Total Assets 323,827 297,880  
LIABILITIES AND STOCKHOLDERS’ EQUITY      
Long-term debt 20,333 20,292  
Other liabilities 221 127  
Stockholders’ equity 303,273 277,461  
Total Liabilities and Stockholders’ Equity 323,827 297,880  
Banking Subsidiary | Corporation      
ASSETS      
Investments in subsidiaries 284,416 258,748  
Other Subsidiaries | Corporation      
ASSETS      
Investments in subsidiaries $ 19,331 $ 20,023  
v3.25.0.1
ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION (Statements of Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Condensed Financial Statements, Captions [Line Items]      
Gain on sale of securities $ 69 $ (5,240) $ (234)
Other income 24,730 18,445 21,807
Total Revenues 132,195 115,085 108,856
Income tax benefit (8,573) (8,161) (9,199)
Net Income 31,846 31,688 35,752
Corporation      
Condensed Financial Statements, Captions [Line Items]      
Dividends from banking subsidiary 10,713 9,702 9,117
Gain on sale of securities 0 (7) 13
Other income 31 41 519
Total Revenues 10,744 9,736 9,649
Expenses 2,859 1,934 1,653
Net income before taxes and equity in undistributed earnings of subsidiaries 7,885 7,802 7,996
Income tax benefit 426 413 516
Net income before equity in undistributed earnings of subsidiaries 8,311 8,215 8,512
Equity in undistributed earnings of subsidiaries 23,535 23,473 27,240
Net Income 31,846 31,688 35,752
Comprehensive (Loss) Income $ 35,087 $ 44,791 $ (12,715)
v3.25.0.1
ACNB CORPORATION (PARENT COMPANY ONLY) FINANCIAL INFORMATION (Statements of Cash Flows) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 31,846 $ 31,688 $ 35,752
Gain on sale of low-income housing partnership 0 0 (421)
Net Cash Provided by Operating Activities 39,782 40,602 39,201
CASH FLOWS FROM INVESTING ACTIVITIES      
Proceeds from sale of low-income housing partnerships 0 0 421
Proceeds from sales of equity securities 0 592 811
Net Cash Provided by (Used in) Investing Activities 2,428 15,437 (331,723)
CASH FLOWS USED IN FINANCING ACTIVITIES      
Proceeds from long-term borrowings 60,000 175,000 1,500
Repayments on long-term borrowings 0 0 (15,200)
Common stock repurchased (249) (2,027) (6,682)
Common stock issued 424 721 713
Dividends paid (10,713) (9,702) (9,117)
Net Cash Used In Financing Activities (60,906) (158,242) (249,448)
Net Decrease in Cash and Cash Equivalents (18,696) (102,203) (541,970)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance 65,958 168,161 710,131
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance 47,262 65,958 168,161
Corporation      
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income 31,846 31,688 35,752
Equity in undistributed earnings of subsidiaries (23,535) (23,473) (27,240)
Decrease (increase) in receivable from banking subsidiary 1,292 153 (311)
Gain on sale of equity securities 0 (7) (13)
Net (losses) gains on equity securities 0 0 177
Gain on sale of low-income housing partnership 0 0 (421)
Other 2,314 439 (308)
Net Cash Provided by Operating Activities 11,917 8,800 7,636
CASH FLOWS FROM INVESTING ACTIVITIES      
Return on investment from subsidiary 1,800 0 13,000
Proceeds from sale of low-income housing partnerships 0 0 421
Proceeds from sales of equity securities 0 592 811
Net Cash Provided by (Used in) Investing Activities 1,800 592 14,232
CASH FLOWS USED IN FINANCING ACTIVITIES      
Repayments on long-term borrowings 0 0 (2,700)
Common stock repurchased (249) (2,027) (6,681)
Common stock issued 424 721 1,442
Dividends paid (10,713) (9,702) (9,117)
Net Cash Used In Financing Activities (10,538) (11,008) (17,056)
Net Decrease in Cash and Cash Equivalents 3,179 (1,616) 4,812
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance 16,647 18,263 13,451
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance $ 19,826 $ 16,647 $ 18,263
v3.25.0.1
SEGMENT AND RELATED INFORMATION (Segment Information) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Segment Reporting Information [Line Items]      
Number of Reportable Segments 2    
Interest income $ 107,465 $ 96,640 $ 87,049
Other income 24,730 18,445 21,807
Total Revenues 132,195 115,085 108,856
Interest expense 23,854 8,320 3,624
Financing Receivable, Credit Loss, Expense (Reversal) (2,763) 844  
Depreciation and amortization expense 3,033 3,362 3,796
Salaries and employee benefits 42,929 40,931 35,979
Other noninterest expense 24,723 21,779 20,506
Income before income taxes 40,419 39,849 44,951
Provision for income taxes 8,573 8,161 9,199
Net income 31,846 31,688 35,752
Total assets 2,394,830 2,418,847 2,525,507
Goodwill 44,185 44,185 44,185
Capital expenditures 960 1,168 1,811
Other      
Segment Reporting Information [Line Items]      
Interest income 5 37 95
Other income 0 (7) 258
Interest expense 1,051 1,052 917
Financing Receivable, Credit Loss, Expense (Reversal) 0 0  
Depreciation and amortization expense 0 0 0
Salaries and employee benefits 390 0 0
Other noninterest expense 1,391 878 557
Income before income taxes (2,827) (1,900) (1,121)
Provision for income taxes (426) (413) (516)
Net income (2,401) (1,487) (605)
Total assets (4,376) (2,332) 16,821
Goodwill 0 0 0
Capital expenditures 0 0 0
Banking | Operating Segments      
Segment Reporting Information [Line Items]      
Interest income 107,456 96,600 86,952
Other income 14,976 9,133 13,242
Interest expense 22,803 7,268 2,672
Financing Receivable, Credit Loss, Expense (Reversal) (2,763) 844  
Depreciation and amortization expense 2,246 2,515 2,995
Salaries and employee benefits 36,670 35,322 30,941
Other noninterest expense 21,758 19,736 18,826
Income before income taxes 41,718 40,048 44,760
Provision for income taxes 8,579 8,139 9,353
Net income 33,139 31,909 35,407
Total assets 2,377,180 2,397,992 2,487,272
Goodwill 35,800 35,800 35,800
Capital expenditures 929 424 1,783
Insurance | Operating Segments      
Segment Reporting Information [Line Items]      
Interest income 4 3 2
Other income 9,754 9,319 8,307
Interest expense 0 0 35
Financing Receivable, Credit Loss, Expense (Reversal) 0 0  
Depreciation and amortization expense 787 847 801
Salaries and employee benefits 5,869 5,609 5,038
Other noninterest expense 1,574 1,165 1,123
Income before income taxes 1,528 1,701 1,312
Provision for income taxes 420 435 362
Net income 1,108 1,266 950
Total assets 22,026 23,187 21,414
Goodwill 8,385 8,385 8,385
Capital expenditures $ 31 $ 744 $ 28