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INVESTMENT SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Summary of available for sale and held to maturity investment securities
The following tables present the amortized cost, fair value, and related allowance for credit losses on available-for-sale ("AFS") and held-to-maturity ("HTM") investment securities as of December 31, 2025 and 2024 and the corresponding amounts of gross
unrealized gains and losses recognized in accumulated other comprehensive income (loss) and gross unrecognized gains and
losses:

(Dollars in thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value		ACL
December 31, 2025
Available-for-Sale:
Debt securities:
States and political subdivisions$141,163 $55 $(24,177)$117,041 $— 
U.S. Treasury obligations and direct obligations of U.S Government agencies100,215 1,103 (1,293)100,025 — 
Collateralized loan obligations40,960 32 (165)40,827 — 
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies442,221 3,032 (38,200)407,053 — 
Residential - Non-government agencies15,935 150 (722)15,363 — 
Commercial - U.S. government-sponsored entities and agencies79,040 415 (11,552)67,903 — 
Total available-for-sale investment securities$819,534 $4,787 $(76,109)$748,212 $— 
(Dollars in thousands)Amortized
Cost		Gross
Unrecognized
Gains		Gross
Unrecognized
Losses		Fair
Value		ACL
December 31, 2025    
Held-to-Maturity:    
Debt securities:
States and political subdivisions$41,925 $— $(7,226)$34,699 $— 
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies520,466 131 (59,451)461,146 — 
Total held-to-maturity investment securities$562,391 $131 $(66,677)$495,845 $— 

(Dollars in thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value		ACL
December 31, 2024
Available-for-Sale:    
Debt securities:    
States and political subdivisions$147,014 $2 $(30,183)$116,833 $— 
U.S. Treasury obligations and direct obligations of U.S Government agencies83,861 81 (2,742)81,200 — 
Collateralized loan obligations31,254 — (114)31,140 — 
Mortgage-backed securities:   
Residential - U.S. government-sponsored entities and agencies472,476 42 (58,047)414,471 — 
Residential - Non-government agencies17,836 151 (1,061)16,926 — 
Commercial - U.S. government-sponsored entities and agencies81,400 76 (14,315)67,161 — 
Commercial - Non-government agencies9,933 — (6)9,927 — 
Total available-for-sale investment securities$843,774 $352 $(106,468)$737,658 $— 

(Dollars in thousands)Amortized
Cost		Gross
Unrecognized
Gains		Gross
Unrecognized
Losses		Fair
Value		ACL
December 31, 2024    
Held-to-Maturity:    
Debt securities:
States and political subdivisions$42,016 $— $(8,884)$33,132 $— 
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies554,914 — (81,365)473,549 — 
Total held-to-maturity investment securities$596,930 $— $(90,249)$506,681 $— 
Schedule of amortized cost and estimated fair value of investment securities by contractual maturity
The amortized cost, estimated fair value, and weighted average yield of the Company's AFS and HTM investment securities at December 31, 2025, are presented below, grouped by contractual maturity. Actual maturities may differ from contractual maturities due to the issuer's option to call or prepay obligations, with or without penalties. Securities that are not due at a single maturity date, such as mortgage-backed securities and other asset-backed investments, are presented separately:

 December 31, 2025
(Dollars in thousands)Amortized CostFair Value
Weighted Average Yield (1)
Available-for-Sale:
Debt securities:
Due in one year or less$825 $817 2.63 %
Due after one year through five years38,386 38,535 4.12 
Due after five years through ten years64,830 63,958 3.81 
Due after ten years137,337 113,756 2.77 
Collateralized loan obligations40,960 40,827 5.54 
Mortgage-backed securities
Residential - U.S. government-sponsored entities and agencies442,221 407,053 2.96 
Residential - Non-government agencies15,935 15,363 4.73 
Commercial - U.S. government-sponsored entities and agencies79,040 67,903 2.73 
Total available-for-sale investment securities$819,534 $748,212 3.22 %
Held-to-Maturity:
Debt securities:
Due after ten years$41,925 $34,699 2.26 %
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies520,466 461,146 1.88 
Total held-to-maturity investment securities$562,391 $495,845 1.91 %
Total investment securities$1,381,925 $1,244,057 2.66 %

(1)Weighted-average yields are computed on an annual basis, and yields on tax-exempt obligations are computed on a taxable-equivalent basis using a federal statutory tax rate of 21%.
Schedule of investment securities in an unrealized loss position
The following table summarizes AFS and HTM securities which were in an unrealized or unrecognized loss position at December 31, 2025 and 2024, aggregated by major security type and length of time in a continuous unrealized or unrecognized loss position:

Less Than 12 Months12 Months or LongerTotal
Description of SecuritiesFair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
(Dollars in thousands)
December 31, 2025
Available-for-Sale:
Debt securities:      
States and political subdivisions$2,196 $(12)$105,922 $(24,165)$108,118 $(24,177)
U.S. Treasury obligations and direct obligations of U.S Government agencies20,687 (48)11,976 (1,245)32,663 (1,293)
Collateralized loan obligations21,002 (99)10,020 (66)31,022 (165)
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies— — 261,335 (38,200)261,335 (38,200)
Residential - Non-government agencies— — 6,954 (722)6,954 (722)
Commercial - U.S. government-sponsored entities and agencies— — 49,246 (11,552)49,246 (11,552)
Total$43,885 $(159)$445,453 $(75,950)$489,338 $(76,109)

 Less Than 12 Months12 Months or LongerTotal
Description of SecuritiesFair ValueUnrecognized LossesFair ValueUnrecognized LossesFair ValueUnrecognized Losses
 (Dollars in thousands)
December 31, 2025      
Held-to-Maturity:
Debt securities:
States and political subdivisions$— $— $34,699 $(7,226)$34,699 $(7,226)
Mortgage-backed securities:
Residential - U.S. Government-sponsored enterprises— — 450,997 (59,451)450,997 (59,451)
Total$— $— $485,696 $(66,677)$485,696 $(66,677)
Less Than 12 Months12 Months or LongerTotal
Description of SecuritiesFair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
(Dollars in thousands)
December 31, 2024
Available-for-Sale:
Debt securities:      
States and political subdivisions$4,967 $(85)$107,267 $(30,098)$112,234 $(30,183)
U.S. Treasury obligations and direct obligations of U.S Government agencies56,139 (803)12,971 (1,939)69,110 (2,742)
Collateralized loan obligations31,140 (114)— — 31,140 (114)
Mortgage-backed securities:      
Residential - U.S. government-sponsored entities and agencies135,224 (2,254)260,575 (55,793)395,799 (58,047)
Residential - Non-government agencies5,270 (100)7,606 (961)12,876 (1,061)
Commercial - U.S. government-sponsored entities and agencies12,469 (90)48,304 (14,225)60,773 (14,315)
Commercial - Non-government agencies9,927 (6)— — 9,927 (6)
Total$255,136 $(3,452)$436,723 $(103,016)$691,859 $(106,468)

Less Than 12 Months12 Months or LongerTotal
Description of SecuritiesFair ValueUnrecognized LossesFair ValueUnrecognized LossesFair ValueUnrecognized Losses
(Dollars in thousands)
December 31, 2024
Held-to-Maturity:
Debt securities:
States and political subdivisions$— $— $33,132 $(8,884)$33,132 $(8,884)
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies7,470 (19)466,079 (81,346)473,549 (81,365)
Total$7,470 $(19)$499,211 $(90,230)$506,681 $(90,249)