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INVESTMENT SECURITIES (Tables)
3 Months Ended
Mar. 31, 2025
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 ACL on available-for-sale ("AFS") and held-to-maturity ("HTM") debt securities as of March 31, 2025 and December 31, 2024 are as follows:

Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueACL
(dollars in thousands)
March 31, 2025
Available-for-sale:    
Debt securities:    
States and political subdivisions$146,693 $$(28,067)$118,629 $— 
U.S. Treasury and other government-sponsored entities and agencies104,874 625 (1,712)103,787 — 
Collateralized loan obligations31,237 — (248)30,989 — 
Mortgage-backed securities:    
Residential - U.S. government-sponsored entities and agencies480,238 1,138 (49,325)432,051 — 
Residential - Non-government agencies17,324 172 (894)16,602 — 
Commercial - U.S. government-sponsored entities and agencies80,883 207 (12,726)68,364 — 
Commercial - Non-government agencies9,958 — (1)9,957 — 
Total available-for-sale investment securities$871,207 $2,145 $(92,973)$780,379 $— 

Amortized CostGross Unrecognized GainsGross Unrecognized LossesFair ValueACL
(dollars in thousands)
March 31, 2025
Held-to-maturity:
Debt securities:
States and political subdivisions$42,011 $— $(9,042)$32,969 $— 
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies547,677 79 (69,008)478,748 — 
Total held-to-maturity investment securities$589,688 $79 $(78,050)$511,717 $— 
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueACL
(dollars in thousands)
December 31, 2024
Available-for-sale:    
Debt securities:    
States and political subdivisions$147,014 $$(30,183)$116,833 $— 
U.S. Treasury and other government-sponsored entities and 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 $— 

Amortized CostGross Unrecognized GainsGross Unrecognized LossesFair ValueACL
(dollars in thousands)
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 our AFS and HTM debt securities as of March 31, 2025, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because issuers may 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.

(dollars in thousands)Amortized CostFair Value
Weighted Average Yield (1)
Available-for-sale:  
Debt securities:
Due in one year or less$4,353 $4,348 5.75 %
Due after one year through five years38,754 38,592 4.06 
Due after five years through ten years65,568 63,748 3.80 
Due after ten years142,892 115,728 2.88 
Collateralized loan obligations31,237 30,989 5.79 
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies480,238 432,051 3.00 
Residential - Non-government agencies17,324 16,602 4.85 
Commercial - U.S. government-sponsored entities and agencies80,883 68,364 2.72 
Commercial - Non-government agencies9,958 9,957 4.29 
Total available-for-sale securities$871,207 $780,379 3.26 %

(dollars in thousands)Amortized CostFair Value
Weighted Average Yield (1)
Held-to-maturity:  
Debt securities:
Due after ten years$42,011 $32,969 2.26 %
Mortgage-backed securities:  
Residential - U.S. government-sponsored entities and agencies547,677 478,748 1.91 
Total held-to-maturity securities$589,688 $511,717 1.93 %

(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 tables summarize AFS and HTM investment securities, which were in a loss position as of the dates presented, aggregated by major security type and length of time in a continuous loss position. There were a total of 197 and 218 AFS investment securities which were in an unrealized loss position, without an ACL, as of March 31, 2025 and December 31, 2024, respectively. There were a total of 83 HTM investment securities which were in an unrecognized loss position, without an ACL, as of March 31, 2025 and December 31, 2024.

Less Than 12 Months12 Months or LongerTotal
(dollars in thousands)Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
March 31, 2025
Available-for-sale:
Debt securities:      
States and political subdivisions$755 $(15)$111,453 $(28,052)$112,208 $(28,067)
U.S. Treasury and other government-sponsored entities and agencies6,276 (19)12,618 (1,693)18,894 (1,712)
Collateralized loan obligations30,989 (248)— — 30,989 (248)
Mortgage-backed securities:      
Residential - U.S. government-sponsored entities and agencies55,046 (702)260,478 (48,623)315,524 (49,325)
Residential - Non-government agencies5,019 (46)7,566 (848)12,585 (894)
Commercial - U.S. government-sponsored entities and agencies— — 49,312 (12,726)49,312 (12,726)
Commercial - Non-government agencies9,957 (1)— — 9,957 (1)
Total$108,042 $(1,031)$441,427 $(91,942)$549,469 $(92,973)

Less Than 12 Months12 Months or LongerTotal
(dollars in thousands)Fair ValueUnrecognized LossesFair ValueUnrecognized LossesFair ValueUnrecognized Losses
March 31, 2025
Held-to-maturity:
Debt securities:
States and political subdivisions$— $— $32,969 $(9,042)$32,969 $(9,042)
Mortgage-backed securities:
Residential - U.S. government-sponsored entities and agencies— — 471,459 (69,008)471,459 (69,008)
Total$— $— $504,428 $(78,050)$504,428 $(78,050)
Less Than 12 Months12 Months or LongerTotal
(dollars in thousands)Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
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 and other government-sponsored entities and 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
(dollars in thousands)Fair ValueUnrecognized LossesFair ValueUnrecognized LossesFair ValueUnrecognized Losses
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)