v3.26.1
Allowance for Credit Losses - Summary of the Company's Loan Portfolio by Loan Class (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total $ 6,304,125   $ 6,291,533
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Total 976 $ 1,645  
Residential real estate:      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Total 142 161  
Residential real estate: | Residential real estate:      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 106,470   301,359
Financing receivable, year two, originated, fiscal year before current fiscal year 292,417   175,122
Financing receivable, year three, originated, two years before current fiscal year 156,399   184,022
Financing receivable, year four, originated, three years before current fiscal year 174,071   332,004
Financing receivable, year five, originated, four years before current fiscal year 319,485   231,674
Prior 339,071   134,510
Revolving Loans Amortized Cost Basis 358,841   389,880
Total 1,746,754   1,748,571
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 0   0
Financing receivable, year three, originated, two years before current fiscal year, write-off 0   0
Financing receivable, year four, originated, three years before current fiscal year, write-off 54   79
Financing receivable, year five, originated, four years before current fiscal year, write-off 26   102
Prior 15   214
Revolving Loans Amortized Cost Basis 47   301
Total 142   696
Residential real estate: | Residential real estate: | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 106,470   299,560
Financing receivable, year two, originated, fiscal year before current fiscal year 290,373   171,724
Financing receivable, year three, originated, two years before current fiscal year 152,572   179,864
Financing receivable, year four, originated, three years before current fiscal year 169,850   323,489
Financing receivable, year five, originated, four years before current fiscal year 310,376   228,676
Prior 330,147   128,506
Revolving Loans Amortized Cost Basis 352,184   382,519
Total 1,711,972   1,714,338
Residential real estate: | Residential real estate: | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   601
Financing receivable, year two, originated, fiscal year before current fiscal year 884   1,878
Financing receivable, year three, originated, two years before current fiscal year 1,871   0
Financing receivable, year four, originated, three years before current fiscal year 0   0
Financing receivable, year five, originated, four years before current fiscal year 0   0
Prior 0   0
Revolving Loans Amortized Cost Basis 596   969
Total 3,351   3,448
Residential real estate: | Residential real estate: | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   1,198
Financing receivable, year two, originated, fiscal year before current fiscal year 1,160   1,520
Financing receivable, year three, originated, two years before current fiscal year 1,956   4,158
Financing receivable, year four, originated, three years before current fiscal year 4,221   8,515
Financing receivable, year five, originated, four years before current fiscal year 9,109   2,998
Prior 8,924   6,004
Revolving Loans Amortized Cost Basis 6,061   6,392
Total 31,431   30,785
Commercial and industrial loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 776,829   721,855
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Total 99 508  
Commercial and industrial loans | Construction and land development      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 9,418   49,182
Financing receivable, year two, originated, fiscal year before current fiscal year 45,815   21,712
Financing receivable, year three, originated, two years before current fiscal year 20,000   11,694
Financing receivable, year four, originated, three years before current fiscal year 11,122   20,565
Financing receivable, year five, originated, four years before current fiscal year 19,440   3,446
Prior 5,459   4,787
Revolving Loans Amortized Cost Basis 350,112   340,658
Total 461,366   452,044
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 0   0
Financing receivable, year three, originated, two years before current fiscal year, write-off 0   0
Financing receivable, year four, originated, three years before current fiscal year, write-off 0   0
Financing receivable, year five, originated, four years before current fiscal year, write-off 0   0
Prior 0   59
Revolving Loans Amortized Cost Basis 0   1,306
Total 0   1,365
Commercial and industrial loans | Construction and land development | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 7,926   49,182
Financing receivable, year two, originated, fiscal year before current fiscal year 45,791   21,706
Financing receivable, year three, originated, two years before current fiscal year 20,000   11,454
Financing receivable, year four, originated, three years before current fiscal year 9,664   19,041
Financing receivable, year five, originated, four years before current fiscal year 17,961   3,442
Prior 4,592   2,616
Revolving Loans Amortized Cost Basis 342,838   333,987
Total 448,772   441,428
Commercial and industrial loans | Construction and land development | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, year three, originated, two years before current fiscal year 0   0
Financing receivable, year four, originated, three years before current fiscal year 0   1,443
Financing receivable, year five, originated, four years before current fiscal year 1,436   0
Prior 0   0
Revolving Loans Amortized Cost Basis 635   0
Total 2,071   1,443
Commercial and industrial loans | Construction and land development | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 1,492   0
Financing receivable, year two, originated, fiscal year before current fiscal year 24   6
Financing receivable, year three, originated, two years before current fiscal year 0   240
Financing receivable, year four, originated, three years before current fiscal year 1,458   81
Financing receivable, year five, originated, four years before current fiscal year 43   4
Prior 867   2,171
Revolving Loans Amortized Cost Basis 6,639   6,671
Total 10,523   9,173
Commercial and industrial loans | Other commercial      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 162,021   455,845
Financing receivable, year two, originated, fiscal year before current fiscal year 431,088   170,149
Financing receivable, year three, originated, two years before current fiscal year 169,134   123,207
Financing receivable, year four, originated, three years before current fiscal year 118,871   397,101
Financing receivable, year five, originated, four years before current fiscal year 387,437   343,369
Prior 599,759   312,838
Revolving Loans Amortized Cost Basis 907,964   1,003,095
Total 2,776,274   2,805,604
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 0   0
Financing receivable, year three, originated, two years before current fiscal year, write-off 0   0
Financing receivable, year four, originated, three years before current fiscal year, write-off 0   12
Financing receivable, year five, originated, four years before current fiscal year, write-off 0   0
Prior 0   271
Revolving Loans Amortized Cost Basis 26   0
Total 26   283
Commercial and industrial loans | Other commercial | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 161,244   454,629
Financing receivable, year two, originated, fiscal year before current fiscal year 429,897   164,721
Financing receivable, year three, originated, two years before current fiscal year 163,511   118,079
Financing receivable, year four, originated, three years before current fiscal year 113,854   394,901
Financing receivable, year five, originated, four years before current fiscal year 385,758   341,572
Prior 592,768   307,898
Revolving Loans Amortized Cost Basis 880,829   975,421
Total 2,727,861   2,757,221
Commercial and industrial loans | Other commercial | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 463   0
Financing receivable, year two, originated, fiscal year before current fiscal year 0   104
Financing receivable, year three, originated, two years before current fiscal year 103   0
Financing receivable, year four, originated, three years before current fiscal year 0   0
Financing receivable, year five, originated, four years before current fiscal year 0   0
Prior 312   315
Revolving Loans Amortized Cost Basis 0   466
Total 878   885
Commercial and industrial loans | Other commercial | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 314   1,216
Financing receivable, year two, originated, fiscal year before current fiscal year 1,191   5,324
Financing receivable, year three, originated, two years before current fiscal year 5,520   5,128
Financing receivable, year four, originated, three years before current fiscal year 5,017   2,200
Financing receivable, year five, originated, four years before current fiscal year 1,679   1,797
Prior 6,679   4,625
Revolving Loans Amortized Cost Basis 27,135   27,208
Total 47,535   47,498
Commercial and industrial loans | Commercial and industrial loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 39,009   204,887
Financing receivable, year two, originated, fiscal year before current fiscal year 195,446   60,322
Financing receivable, year three, originated, two years before current fiscal year 56,425   52,896
Financing receivable, year four, originated, three years before current fiscal year 39,661   55,730
Financing receivable, year five, originated, four years before current fiscal year 52,186   11,387
Prior 57,121   14,228
Revolving Loans Amortized Cost Basis 336,981   322,405
Total 776,829   721,855
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 0   5
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 59   62
Financing receivable, year three, originated, two years before current fiscal year, write-off 1   192
Financing receivable, year four, originated, three years before current fiscal year, write-off 0   52
Financing receivable, year five, originated, four years before current fiscal year, write-off 10   64
Prior 15   1,655
Revolving Loans Amortized Cost Basis 14   286
Total 99   2,316
Commercial and industrial loans | Commercial and industrial loans | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 38,884   203,730
Financing receivable, year two, originated, fiscal year before current fiscal year 193,940   59,255
Financing receivable, year three, originated, two years before current fiscal year 55,158   41,633
Financing receivable, year four, originated, three years before current fiscal year 35,475   53,389
Financing receivable, year five, originated, four years before current fiscal year 49,600   10,397
Prior 56,098   14,114
Revolving Loans Amortized Cost Basis 334,246   319,794
Total 763,401   702,312
Commercial and industrial loans | Commercial and industrial loans | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, year three, originated, two years before current fiscal year 0   697
Financing receivable, year four, originated, three years before current fiscal year 451   35
Financing receivable, year five, originated, four years before current fiscal year 0   0
Prior 0   0
Revolving Loans Amortized Cost Basis 0   520
Total 451   1,252
Commercial and industrial loans | Commercial and industrial loans | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 125   1,157
Financing receivable, year two, originated, fiscal year before current fiscal year 1,506   1,067
Financing receivable, year three, originated, two years before current fiscal year 1,267   10,566
Financing receivable, year four, originated, three years before current fiscal year 3,735   2,306
Financing receivable, year five, originated, four years before current fiscal year 2,586   990
Prior 1,023   114
Revolving Loans Amortized Cost Basis 2,735   2,091
Total 12,977   18,291
Agricultural production and other loans to farmers      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 99,362   112,345
Agricultural production and other loans to farmers | Farmland      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 9,025   77,556
Financing receivable, year two, originated, fiscal year before current fiscal year 74,659   34,139
Financing receivable, year three, originated, two years before current fiscal year 31,806   28,370
Financing receivable, year four, originated, three years before current fiscal year 26,539   56,117
Financing receivable, year five, originated, four years before current fiscal year 53,207   21,477
Prior 43,146   26,297
Revolving Loans Amortized Cost Basis 94,555   95,572
Total 332,937   339,528
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 0   0
Financing receivable, year three, originated, two years before current fiscal year, write-off 0   273
Financing receivable, year four, originated, three years before current fiscal year, write-off 0   0
Financing receivable, year five, originated, four years before current fiscal year, write-off 0   80
Prior 0   0
Revolving Loans Amortized Cost Basis 0   0
Total 0   353
Agricultural production and other loans to farmers | Farmland | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 9,025   76,991
Financing receivable, year two, originated, fiscal year before current fiscal year 74,094   34,117
Financing receivable, year three, originated, two years before current fiscal year 31,784   27,120
Financing receivable, year four, originated, three years before current fiscal year 25,293   55,283
Financing receivable, year five, originated, four years before current fiscal year 52,384   20,828
Prior 41,394   25,344
Revolving Loans Amortized Cost Basis 93,956   95,572
Total 327,930   335,255
Agricultural production and other loans to farmers | Farmland | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, year three, originated, two years before current fiscal year 0   0
Financing receivable, year four, originated, three years before current fiscal year 0   0
Financing receivable, year five, originated, four years before current fiscal year 0   0
Prior     0
Revolving Loans Amortized Cost Basis 0   0
Total 0   0
Agricultural production and other loans to farmers | Farmland | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   565
Financing receivable, year two, originated, fiscal year before current fiscal year 565   22
Financing receivable, year three, originated, two years before current fiscal year 22   1,250
Financing receivable, year four, originated, three years before current fiscal year 1,246   834
Financing receivable, year five, originated, four years before current fiscal year 823   649
Prior 1,752   953
Revolving Loans Amortized Cost Basis 599   0
Total 5,007   4,273
Agricultural production and other loans to farmers | Agricultural production and other loans to farmers      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 5,028   17,954
Financing receivable, year two, originated, fiscal year before current fiscal year 17,401   9,978
Financing receivable, year three, originated, two years before current fiscal year 7,963   5,925
Financing receivable, year four, originated, three years before current fiscal year 4,328   1,700
Financing receivable, year five, originated, four years before current fiscal year 1,436   1,377
Prior 1,553   128
Revolving Loans Amortized Cost Basis 61,653   75,283
Total 99,362   112,345
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 0   18
Financing receivable, year three, originated, two years before current fiscal year, write-off 0   19
Financing receivable, year four, originated, three years before current fiscal year, write-off 0   0
Financing receivable, year five, originated, four years before current fiscal year, write-off 0   109
Prior 0   0
Revolving Loans Amortized Cost Basis 0   434
Total 0   580
Agricultural production and other loans to farmers | Agricultural production and other loans to farmers | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 5,028   17,954
Financing receivable, year two, originated, fiscal year before current fiscal year 17,210   9,911
Financing receivable, year three, originated, two years before current fiscal year 7,790   5,656
Financing receivable, year four, originated, three years before current fiscal year 3,288   1,672
Financing receivable, year five, originated, four years before current fiscal year 1,388   1,377
Prior 1,285   128
Revolving Loans Amortized Cost Basis 60,504   74,637
Total 96,493   111,335
Agricultural production and other loans to farmers | Agricultural production and other loans to farmers | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, year three, originated, two years before current fiscal year 0   0
Financing receivable, year four, originated, three years before current fiscal year 0   0
Financing receivable, year five, originated, four years before current fiscal year 0   0
Prior 0   0
Revolving Loans Amortized Cost Basis 0   0
Total 0   0
Agricultural production and other loans to farmers | Agricultural production and other loans to farmers | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year 191   67
Financing receivable, year three, originated, two years before current fiscal year 173   269
Financing receivable, year four, originated, three years before current fiscal year 1,040   28
Financing receivable, year five, originated, four years before current fiscal year 48   0
Prior 268   0
Revolving Loans Amortized Cost Basis 1,149   646
Total 2,869   1,010
Consumer and other loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Total 110,603   111,586
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Total 709 $ 728  
Consumer and other loans | Consumer loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 9,904   36,325
Financing receivable, year two, originated, fiscal year before current fiscal year 29,758   16,426
Financing receivable, year three, originated, two years before current fiscal year 13,353   5,383
Financing receivable, year four, originated, three years before current fiscal year 4,157   2,565
Financing receivable, year five, originated, four years before current fiscal year 2,216   1,064
Prior 5,102   4,366
Revolving Loans Amortized Cost Basis 46,113   45,457
Total 110,603   111,586
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year, Writoff [Abstract]      
Financing receivable, year one, originated, current fiscal year, write-off 498   2,022
Financing receivable, year two, originated, fiscal year before current fiscal year, write-off 121   219
Financing receivable, year three, originated, two years before current fiscal year, write-off 28   177
Financing receivable, year four, originated, three years before current fiscal year, write-off 28   92
Financing receivable, year five, originated, four years before current fiscal year, write-off 3   23
Prior 12   24
Revolving Loans Amortized Cost Basis 19   137
Total 709   2,694
Consumer and other loans | Consumer loans | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 9,904   36,237
Financing receivable, year two, originated, fiscal year before current fiscal year 29,724   16,343
Financing receivable, year three, originated, two years before current fiscal year 13,270   5,330
Financing receivable, year four, originated, three years before current fiscal year 4,119   2,563
Financing receivable, year five, originated, four years before current fiscal year 2,215   1,064
Prior 5,097   4,355
Revolving Loans Amortized Cost Basis 46,063   45,373
Total 110,392   111,265
Consumer and other loans | Consumer loans | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   0
Financing receivable, year two, originated, fiscal year before current fiscal year 0   0
Financing receivable, year three, originated, two years before current fiscal year 0   0
Financing receivable, year four, originated, three years before current fiscal year 0   0
Financing receivable, year five, originated, four years before current fiscal year 0   0
Prior 0   0
Revolving Loans Amortized Cost Basis 0   0
Total 0   0
Consumer and other loans | Consumer loans | Classified      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing receivable, year one, originated current fiscal year 0   88
Financing receivable, year two, originated, fiscal year before current fiscal year 34   83
Financing receivable, year three, originated, two years before current fiscal year 83   53
Financing receivable, year four, originated, three years before current fiscal year 38   2
Financing receivable, year five, originated, four years before current fiscal year 1   0
Prior 5   11
Revolving Loans Amortized Cost Basis 50   84
Total $ 211   $ 321