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Investment Securities (Tables)
 3 Months Ended
Mar. 31, 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:
March 31, 2025
(Dollars in thousands)Amortized CostUnrealized GainUnrealized LossFair Value
United States government agency securities$44,042 $11 $(4,700)$39,353 
United States sponsored mortgage-backed securities183,245 921 (11,376)172,790 
United States treasury securities84,023 — (1,269)82,754 
Municipal securities115,827 28 (14,792)101,063 
Corporate debt securities15,491 69 (85)15,475 
Other debt securities7,500 — — 7,500 
Total available-for-sale debt securities450,128 1,029 (32,222)418,935 
Other securities682 — — 682 
Investment securities available-for-sale$450,810 $1,029 $(32,222)$419,617 
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 securities444,864 235 (34,140)410,959 
Other securities681 — — 681 
Investment securities available-for-sale$445,545 $235 $(34,140)$411,640 

The following table presents amortized cost and fair values of available-for-sale debt securities by contractual maturity as of the period shown:
March 31, 2025
(Dollars in thousands)Amortized CostFair Value
Within one year$86,673 $85,404 
After one year, but within five years14,858 14,308 
After five years, but within ten years48,107 44,340 
After ten years300,490 274,883 
Total available-for-sale debt securities$450,128 $418,935 
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 March 31, 2025 and December 31, 2024, aggregated by investment category and length of time that the individual securities have been in a continuous loss position:
March 31, 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 (28)
$5,938 $(114)$32,453 $(4,586)
United States sponsored mortgage-backed securities (66)
59,630 (1,153)44,249 (10,223)
United States treasury securities (18)
— — 82,754 (1,269)
Municipal securities (202)
18,288 (1,704)81,861 (13,088)
Corporate debt securities (6)
1,194 (30)2,344 (55)
Total$85,050 $(3,001)$243,661 $(29,221)
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 March 31,
(Dollars in thousands)20252024
Proceeds from sales of available-for-sale securities$515 $11,711 
Gains, gross— 658 
Losses, gross42 — 
Unrealized holding losses on equity securities$(266)$(49)