v3.26.1
Securities (Tables)
 3 Months Ended
Mar. 31, 2026
Investments, Debt and Equity Securities [Abstract]  
Carrying values of investment securities
The carrying values of investment securities as of March 31, 2026 and December 31, 2025 are summarized in the following table (dollars in thousands):

 March 31, 2026December 31, 2025
 AmountPercentAmountPercent
Securities available for sale
U.S. Treasury$264,428 27.59 %$255,527 26.74 %
U.S. Government Agency and GSE securities4,592 0.48 4,658 0.49 
State and political subdivisions372,028 38.82 382,645 40.04 
Mortgage-backed securities and collateralized mortgage obligations317,336 33.11 312,754 32.73 
Total securities available for sale$958,384 100.00 %$955,584 100.00 %
Carrying amount of available-for-sale securities and approximate fair values and realized gains and losses
The carrying amount of available-for-sale securities and their approximate fair values as of March 31, 2026 and December 31, 2025, were as follows (in thousands):
 Amortized CostGross
Unrealized
Gains		Gross
Unrealized
(Losses)		Allowance for Credit LossesEstimated Fair
Value
March 31, 2026
U.S. Treasury$264,404 $1,081 $(1,057)$— $264,428 
U.S. Government Agency and GSE securities4,711 — (119)— 4,592 
State and political subdivisions382,785 1,402 (12,159)— 372,028 
Mortgage-backed securities and collateralized mortgage obligations317,259 1,569 (1,492)— 317,336 
Total$969,159 $4,052 $(14,827)$— $958,384 
December 31, 2025    
U.S. Treasury$253,925 $2,316 $(714)$— $255,527 
U.S. Government Agency and GSE securities4,687 — (29)— 4,658 
State and political subdivisions388,685 3,214 (9,254)— 382,645 
Mortgage-backed securities and collateralized mortgage obligations309,998 3,258 (502)— 312,754 
Total$957,295 $8,788 $(10,499)$— $955,584 
Available-for-sale securities classified as per contractual maturities
The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities as of March 31, 2026, were as follows (in thousands) below.
 Amortized
Cost		Fair Value
Due in one year or less$77,313 $76,632 
Due after one year through five years280,659 280,312 
Due after five years through ten years86,872 79,591 
Due over ten years207,056 204,513 
$651,900 $641,048 
Mortgage-backed securities and collateralized mortgage obligations317,259 317,336 
$969,159 $958,384 
Available-for-sale securities, continuous unrealized loss position, fair value
The following table shows the Company's investments' gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2026 and December 31, 2025 (in thousands):
 Less than 12 months12 months or moreTotal
March 31, 2026
Description of Securities
#Fair ValueUnrealized
Loss		%#Fair ValueUnrealized
Loss		%#Fair ValueUnrealized
Loss		%
U.S. Treasury18 $76,527 $(525)0.69 %19 $51,814 $(532)1.03 %37 $128,341 $(1,057)0.82 %
U.S. Government
Agency and GSE
securities		1 4,592 (119)2.59 — — — — 1 4,592 (119)2.59 
State and political subdivisions413 173,209 (2,793)1.61 346 95,158 (9,366)9.84 759 268,367 (12,159)4.53 
Mortgage-backed
securities and
collateralized
mortgage obligations		13 111,665 (1,228)1.10 4 18,578 (264)1.42 17 130,243 (1,492)1.15 
445 $365,993 $(4,665)1.27 %369 $165,550 $(10,162)6.14 %814 $531,543 $(14,827)2.79 %
 Less than 12 months12 months or moreTotal
December 31, 2025
Description of Securities		#Fair ValueUnrealized
Loss		%#Fair ValueUnrealized
Loss		%#Fair ValueUnrealized
Loss		%
U.S. Treasury6 $29,972 $(69)0.23 %23 $61,637 $(645)1.05 %29 $91,609 $(714)0.78 %
U.S. Government
Agency and GSE
securities		1 4,658 (29)0.62 — — — — 1 4,658 (29)0.62 
State and political subdivisions78 47,697 (446)0.94 518 159,124 (8,808)5.54 596 206,821 (9,254)4.47 
Mortgage-backed
securities and
collateralized
mortgage obligations		7 77,518 (382)0.49 4 19,920 (120)0.60 11 97,438 (502)0.52 
92 $159,845 $(926)0.58 %545 $240,681 $(9,573)3.98 %637 $400,526 $(10,499)2.62 %
Schedule of Sales Proceeds and Gross Realized Gains and Losses
Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands):
 Three Months Ended March 31,
20262025
Sale proceeds$134 $— 
Gross realized gains— — 
Gross realized losses(13)—