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Investment Securities (Tables)
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost and Fair Values of Investment Securities Available-for-sale
The following tables present amortized cost and fair values of investment securities available-for-sale as of the periods shown:
September 30, 2025
(Dollars in thousands)Amortized CostUnrealized GainUnrealized LossFair Value
United States government agency securities$24,589 $28 $(2,545)$22,072 
United States sponsored mortgage-backed securities202,884 2,204 (9,260)195,828 
United States treasury securities19,983 — (148)19,835 
Municipal securities62,671 31 (7,768)54,934 
Corporate debt securities24,447 144 (51)24,540 
Other debt securities7,500 — — 7,500 
Investment securities available-for-sale$342,074 $2,407 $(19,772)$324,709 
December 31, 2024
(Dollars in thousands)Amortized CostUnrealized GainUnrealized LossFair Value
United States government agency securities$45,449 $10 $(5,613)$39,846 
United States sponsored mortgage-backed securities161,032 130 (13,582)147,580 
United States treasury securities106,095 — (2,120)103,975 
Municipal securities114,845 28 (12,733)102,140 
Corporate debt securities9,943 67 (92)9,918 
Other debt securities7,500 — — 7,500 
Total available-for-sale debt securities$444,864 $235 $(34,140)$410,959 

The following table presents amortized cost and fair values of available-for-sale debt securities by contractual maturity as of the period shown:
September 30, 2025
(Dollars in thousands)Amortized CostFair Value
Within one year$21,633 $21,485 
After one year, but within five years18,611 18,466 
After five years, but within ten years34,402 33,016 
After ten years267,428 251,742 
Total available-for-sale debt securities$342,074 $324,709 
Schedule of Allowance for credit Loss, Available-For-Sale Debt Securities The following table summarizes the activity in the ACL related to available-for-sale debt securities during the three and nine months ended September 30, 2025 and September 30, 2024.
Three Months Ended September 30,Nine Months Ended September 30,
(Dollars in thousands)2025202420252024
ACL, beginning of period$— $— $— $— 
Provision for credit losses1,000 500 1,000 500 
Charge-offs(1,000)(500)(1,000)(500)
ACL, end of period$— $— $— $— 
Schedule of Investments in an Unrealized Loss Position
The following tables show available-for-sale debt securities in an unrealized loss position for which an ACL has not been recorded as of September 30, 2025 and December 31, 2024, aggregated by investment category and length of time that the individual securities have been in a continuous loss position:
September 30, 2025
(Dollars in thousands)Less than 12 months12 months or more
Description and number of positionsFair ValueUnrealized LossFair ValueUnrealized Loss
United States government agency securities (17)
$370 $(2)$18,698 $(2,543)
United States sponsored mortgage-backed securities (49)
25,096 (482)47,684 (8,778)
United States treasury securities (4)
— — 19,835 (148)
Municipal securities (125)
8,961 (291)43,790 (7,477)
Corporate debt securities (4)
10,026 (37)1,986 (14)
Total$44,453 $(812)$131,993 $(18,960)
December 31, 2024
(Dollars in thousands)Less than 12 months12 months or more
Description and number of positionsFair ValueUnrealized LossFair ValueUnrealized Loss
United States government agency securities (28)
$5,956 $(264)$32,854 $(5,349)
United States sponsored mortgage-backed securities (75)
92,929 (2,291)44,444 (11,291)
United States treasury securities (23)
— — 103,975 (2,120)
Municipal securities (201)
17,613 (1,425)83,592 (11,308)
Corporate debt securities (6)
990 (10)2,818 (82)
Total$117,488 $(3,990)$267,683 $(30,150)
Schedule of Realized Gain (Loss) on Investments
The following table summarizes investment sales, related gains and losses and unrealized holding losses for the periods shown:
Three Months Ended September 30,Nine Months Ended September 30,
(Dollars in thousands)2025202420252024
Proceeds from sales of available-for-sale securities$66,313 $— $95,793 $24,327 
Gains, gross18 — 399 658 
Losses, gross7,513 — 7,846 — 
Proceeds from sales of equity securities$581 $— $769 $39 
Gain, gross— — 118 103 
Unrealized holding (losses) gains on equity securities$857 $498 $217 $463