v3.25.0.1
INVESTMENT SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Summary of available for sale and held to maturity investment securities
The amortized cost, gross unrecognized/unrealized gains and losses, fair value and related allowance for credit losses on available-for-sale ("AFS") and held-to-maturity ("HTM") investment securities as of December 31, 2024 and 2023 are as follows:

(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 enterprises472,476 42 (58,047)414,471 — 
Residential - Non-government agencies17,836 151 (1,061)16,926 — 
Commercial - U.S. Government-sponsored enterprises81,400 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 enterprises554,914 (81,365)473,549 — 
Total held-to-maturity investment securities$596,930 $— $(90,249)$506,681 $— 
(Dollars in thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value		ACL
December 31, 2023
Available-for-Sale:    
Debt securities:    
States and political subdivisions$156,432 $13 $(29,810)$126,635 $— 
Corporate securities35,731 — (4,317)31,414 — 
U.S. Treasury obligations and direct obligations of U.S Government agencies28,105 33 (1,941)26,197 — 
Mortgage-backed securities:   
Residential - U.S. Government-sponsored enterprises441,898 95 (63,607)378,386 — 
Residential - Non-government agencies19,322 366 (980)18,708 — 
Commercial - U.S. Government-sponsored enterprises58,318 — (7,404)50,914 — 
Commercial - Non-government agencies15,144 — (188)14,956 — 
Total available-for-sale investment securities$754,950 $507 $(108,247)$647,210 $— 

(Dollars in thousands)Amortized
Cost		Gross
Unrecognized
Gains		Gross
Unrecognized
Losses		Fair
Value		ACL
December 31, 2023    
Held-to-Maturity:    
Debt securities:
States and political subdivisions$41,959 $— $(6,706)$35,253 $— 
Mortgage-backed securities:
Residential - U.S. Government-sponsored enterprises590,379 61 (60,515)529,925 — 
Total held-to-maturity investment securities$632,338 $61 $(67,221)$565,178 $— 
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 our investment securities at December 31, 2024 by contractual maturity are shown below. Actual maturities may differ from contractual maturities as issuers have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.
 December 31, 2024
(Dollars in thousands)Amortized CostFair Value
Weighted Average Yield (1)
Available-for-Sale:
Debt securities:
Due in one year or less$4,237 $4,230 5.87 %
Due after one year through five years37,393 36,866 4.11 
Due after five years through ten years68,257 65,126 3.87 
Due after ten years120,988 91,811 2.42 
Collateralized loan obligations31,254 31,140 6.07 
Mortgage-backed securities
Residential - U.S. Government-sponsored enterprises472,476 414,471 2.90 
Residential - Non-government agencies17,836 16,926 4.36 
Commercial - U.S. Government-sponsored enterprises81,400 67,161 2.72 
Commercial - Non-government agencies9,933 9,927 4.76 
Total available-for-sale investment securities$843,774 $737,658 3.18 %
Held-to-Maturity:
Debt securities:
Due after ten years$42,016 $33,132 2.26 %
Mortgage-backed securities:
Residential - U.S. Government-sponsored enterprises554,914 473,549 1.89 
Total held-to-maturity investment securities$596,930 $506,681 1.92 %
Total investment securities$1,440,704 $1,244,339 2.62 %

(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, 2024 and 2023, 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, 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 enterprises135,224 (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 enterprises12,469 (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 enterprises7,470 (19)466,079 (81,346)473,549 (81,365)
Total$7,470 $(19)$499,211 $(90,230)$506,681 $(90,249)
Less Than 12 Months12 Months or LongerTotal
Description of SecuritiesFair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
(Dollars in thousands)
December 31, 2023
Available-for-Sale:
Debt securities:      
States and political subdivisions$534 $(1)$114,601 $(29,809)$115,135 $(29,810)
Corporate securities— — 31,414 (4,317)31,414 (4,317)
U.S. Treasury obligations and direct obligations of U.S Government agencies2,893 (87)16,286 (1,854)19,179 (1,941)
Mortgage-backed securities:      
Residential - U.S. Government-sponsored enterprises— — 367,887 (63,607)367,887 (63,607)
Residential - Non-government agencies— — 8,169 (980)8,169 (980)
Commercial - U.S. Government-sponsored enterprises6,467 (1)44,447 (7,403)50,914 (7,404)
Commercial - Non-government agencies9,663 (130)5,293 (58)14,956 (188)
Total$19,557 $(219)$588,097 $(108,028)$607,654 $(108,247)

Less Than 12 Months12 Months or LongerTotal
Description of SecuritiesFair ValueUnrecognized LossesFair ValueUnrecognized LossesFair ValueUnrecognized Losses
(Dollars in thousands)
December 31, 2023
Held-to-Maturity:
Debt securities:
States and political subdivisions$— $— $35,253 $(6,706)$35,253 $(6,706)
Mortgage-backed securities:
Residential - U.S. Government-sponsored enterprises8,853 (33)512,378 (60,482)521,231 (60,515)
Total$8,853 $(33)$547,631 $(67,188)$556,484 $(67,221)