v3.26.1
Securities (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
security
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
security
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
security
Securities available for sale          
Percent 100.00%   100.00%   100.00%
Amount $ 1,012,232   $ 1,012,232   $ 955,584
Available-for-sale Securities Reconciliation [Abstract]          
Amortized Cost 1,022,607   1,022,607   957,295
Gross Unrealized Gains 3,539   3,539   8,788
Gross Unrealized (Losses) (13,914)   (13,914)   (10,499)
Allowance for Credit Losses 0   0   0
Amortized Cost          
Due in one year or less 59,925   59,925    
Due after one year through five years 307,830   307,830    
Due after five years through ten years 85,215   85,215    
Due over ten years 204,087   204,087    
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total 657,057   657,057    
Fair Value          
Due in one year or less 59,619   59,619    
Due after one year through five years 304,910   304,910    
Due after five years through ten years 79,502   79,502    
Due over ten years 204,687   204,687    
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total 648,718   648,718    
Carrying value of investment securities pledged to collateralize short-term borrowings 1,012,232   1,012,232   955,584
Sales Proceeds and Gross Realized Gains and Losses          
Sale proceeds 0 $ 0 134 $ 0  
Gross realized gains 0 0 0 0  
Gross realized losses $ 0 $ 0 $ (13) 0 $ 9,630
Less than 12 months          
Number of securities | security 292   292   92
Fair Value $ 473,459   $ 473,459   $ 159,845
Unrealized Loss $ (5,277)   $ (5,277)   $ (926)
Percentage 1.11%   1.11%   0.58%
12 months or more          
Number of securities | security 347   347   545
Fair Value $ 146,732   $ 146,732   $ 240,681
Unrealized Loss $ (8,637)   $ (8,637)   $ (9,573)
Percentage 5.89%   5.89%   3.98%
Total          
Number of securities | security 639   639   637
Fair Value $ 620,191   $ 620,191   $ 400,526
Unrealized Loss $ (13,914)   $ (13,914)   $ (10,499)
Percentage 2.24%   2.24%   2.62%
Proceeds from sale of VISA Class B shares     $ 1,693 $ 0  
Collateralized Securities          
Securities available for sale          
Amount $ 152,730   152,730   $ 154,030
Fair Value          
Carrying value of investment securities pledged to collateralize short-term borrowings $ 152,730   $ 152,730   $ 154,030
U.S. Treasury          
Securities available for sale          
Percent 27.00%   27.00%   26.74%
Amount $ 273,272   $ 273,272   $ 255,527
Available-for-sale Securities Reconciliation [Abstract]          
Amortized Cost 274,966   274,966   253,925
Gross Unrealized Gains 274   274   2,316
Gross Unrealized (Losses) (1,968)   (1,968)   (714)
Allowance for Credit Losses 0   0   0
Fair Value          
Carrying value of investment securities pledged to collateralize short-term borrowings $ 273,272   $ 273,272   $ 255,527
Less than 12 months          
Number of securities | security 45   45   6
Fair Value $ 180,949   $ 180,949   $ 29,972
Unrealized Loss $ (1,538)   $ (1,538)   $ (69)
Percentage 0.85%   0.85%   0.23%
12 months or more          
Number of securities | security 13   13   23
Fair Value $ 36,953   $ 36,953   $ 61,637
Unrealized Loss $ (430)   $ (430)   $ (645)
Percentage 1.16%   1.16%   1.05%
Total          
Number of securities | security 58   58   29
Fair Value $ 217,902   $ 217,902   $ 91,609
Unrealized Loss $ (1,968)   $ (1,968)   $ (714)
Percentage 0.90%   0.90%   0.78%
U.S. Government Agency and GSE securities          
Securities available for sale          
Percent 0.43%   0.43%   0.49%
Amount $ 4,321   $ 4,321   $ 4,658
Available-for-sale Securities Reconciliation [Abstract]          
Amortized Cost 4,459   4,459   4,687
Gross Unrealized Gains 0   0   0
Gross Unrealized (Losses) (138)   (138)   (29)
Allowance for Credit Losses 0   0   0
Fair Value          
Carrying value of investment securities pledged to collateralize short-term borrowings $ 4,321   $ 4,321   $ 4,658
Less than 12 months          
Number of securities | security 1   1   1
Fair Value $ 4,321   $ 4,321   $ 4,658
Unrealized Loss $ (138)   $ (138)   $ (29)
Percentage 3.19%   3.19%   0.62%
12 months or more          
Number of securities | security 0   0   0
Fair Value $ 0   $ 0   $ 0
Unrealized Loss $ 0   $ 0   $ 0
Percentage 0.00%   0.00%   0.00%
Total          
Number of securities | security 1   1   1
Fair Value $ 4,321   $ 4,321   $ 4,658
Unrealized Loss $ (138)   $ (138)   $ (29)
Percentage 3.19%   3.19%   0.62%
State and political subdivisions          
Securities available for sale          
Percent 36.66%   36.66%   40.04%
Amount $ 371,125   $ 371,125   $ 382,645
Available-for-sale Securities Reconciliation [Abstract]          
Amortized Cost 377,632   377,632   388,685
Gross Unrealized Gains 2,492   2,492   3,214
Gross Unrealized (Losses) (8,999)   (8,999)   (9,254)
Allowance for Credit Losses 0   0   0
Fair Value          
Carrying value of investment securities pledged to collateralize short-term borrowings $ 371,125   $ 371,125   $ 382,645
Less than 12 months          
Number of securities | security 224   224   78
Fair Value $ 108,146   $ 108,146   $ 47,697
Unrealized Loss $ (1,038)   $ (1,038)   $ (446)
Percentage 0.96%   0.96%   0.94%
12 months or more          
Number of securities | security 330   330   518
Fair Value $ 92,339   $ 92,339   $ 159,124
Unrealized Loss $ (7,961)   $ (7,961)   $ (8,808)
Percentage 8.62%   8.62%   5.54%
Total          
Number of securities | security 554   554   596
Fair Value $ 200,485   $ 200,485   $ 206,821
Unrealized Loss $ (8,999)   $ (8,999)   $ (9,254)
Percentage 4.49%   4.49%   4.47%
Mortgage-backed securities and collateralized mortgage obligations          
Securities available for sale          
Percent 35.91%   35.91%   32.73%
Amount $ 363,514   $ 363,514   $ 312,754
Available-for-sale Securities Reconciliation [Abstract]          
Amortized Cost 365,550   365,550   309,998
Gross Unrealized Gains 773   773   3,258
Gross Unrealized (Losses) (2,809)   (2,809)   (502)
Allowance for Credit Losses 0   0   0
Amortized Cost          
Mortgage-backed securities and collateralized mortgage obligations 365,550   365,550    
Fair Value          
Mortgage-backed securities and collateralized mortgage obligations 363,514   363,514    
Carrying value of investment securities pledged to collateralize short-term borrowings $ 363,514   $ 363,514   $ 312,754
Less than 12 months          
Number of securities | security 22   22   7
Fair Value $ 180,043   $ 180,043   $ 77,518
Unrealized Loss $ (2,563)   $ (2,563)   $ (382)
Percentage 1.42%   1.42%   0.49%
12 months or more          
Number of securities | security 4   4   4
Fair Value $ 17,440   $ 17,440   $ 19,920
Unrealized Loss $ (246)   $ (246)   $ (120)
Percentage 1.41%   1.41%   0.60%
Total          
Number of securities | security 26   26   11
Fair Value $ 197,483   $ 197,483   $ 97,438
Unrealized Loss $ (2,809)   $ (2,809)   $ (502)
Percentage 1.42%   1.42%   0.52%