v3.26.3
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Risk Grading of Loan Portfolio by Loan Class (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year $ 1,778,189 $ 3,328,742
Current fiscal year, charge-offs 92 8,288
Fiscal year before current fiscal year 2,777,097 1,925,189
Fiscal year before current fiscal year, charge-offs 7,460 2,478
Two years before current fiscal year 1,671,757 1,271,161
Two years before current fiscal year, charge-offs 1,417 4,020
Three years before current fiscal year 1,164,088 1,466,305
Three years before current fiscal year, charge-offs 20,493 2,501
Four years before current fiscal year 1,631,306 1,274,125
Four years before current fiscal year, charge-offs 2,446 4,500
Prior 3,234,367 1,794,274
Prior, charge-offs 16,384 2,434
Revolving loans amortized cost basis 3,327,462 2,728,167
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 16,708 3,744
Revolving loans converted to term, charge-offs 0 0
Total 15,600,974 13,791,707
Total, charge-offs 48,292 24,221
Commercial and industrial loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 645,976 1,529,635
Current fiscal year, charge-offs 10 7,981
Fiscal year before current fiscal year 1,043,732 763,030
Fiscal year before current fiscal year, charge-offs 3,341 1,348
Two years before current fiscal year 557,784 246,950
Two years before current fiscal year, charge-offs 975 2,434
Three years before current fiscal year 175,849 122,001
Three years before current fiscal year, charge-offs 19,459 264
Four years before current fiscal year 136,193 85,585
Four years before current fiscal year, charge-offs 1,820 3,685
Prior 213,419 85,395
Prior, charge-offs 15,340 1,964
Revolving loans amortized cost basis 1,805,092 1,645,686
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 527 0
Revolving loans converted to term, charge-offs 0 0
Total 4,578,572 4,478,282
Total, charge-offs 40,945 17,676
Commercial and industrial loans | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 639,136 1,518,095
Fiscal year before current fiscal year 1,023,933 710,695
Two years before current fiscal year 495,343 236,596
Three years before current fiscal year 147,204 115,775
Four years before current fiscal year 124,450 69,834
Prior 177,735 65,800
Revolving loans amortized cost basis 1,651,199 1,540,939
Revolving loans converted to term 505 0
Total 4,259,505 4,257,734
Commercial and industrial loans | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 1,571 9,552
Fiscal year before current fiscal year 15,134 34,613
Two years before current fiscal year 40,885 7,683
Three years before current fiscal year 14,922 3,246
Four years before current fiscal year 6,017 4,041
Prior 6,309 479
Revolving loans amortized cost basis 67,625 40,986
Revolving loans converted to term 0 0
Total 152,463 100,600
Commercial and industrial loans | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 5,269 1,587
Fiscal year before current fiscal year 4,665 17,140
Two years before current fiscal year 20,387 2,671
Three years before current fiscal year 5,021 2,980
Four years before current fiscal year 5,292 11,710
Prior 14,667 19,116
Revolving loans amortized cost basis 80,906 62,556
Revolving loans converted to term 0 0
Total 136,207 117,760
Commercial and industrial loans | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 401
Fiscal year before current fiscal year 0 582
Two years before current fiscal year 1,169 0
Three years before current fiscal year 8,702 0
Four years before current fiscal year 434 0
Prior 14,708 0
Revolving loans amortized cost basis 5,362 1,205
Revolving loans converted to term 22 0
Total 30,397 2,188
Agricultural land, production and other loans to farmers    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 52,797 64,149
Current fiscal year, charge-offs 0  
Fiscal year before current fiscal year 62,037 22,270
Fiscal year before current fiscal year, charge-offs 28  
Two years before current fiscal year 22,863 20,962
Two years before current fiscal year, charge-offs 0  
Three years before current fiscal year 20,024 24,964
Three years before current fiscal year, charge-offs 0  
Four years before current fiscal year 25,201 22,246
Four years before current fiscal year, charge-offs 0  
Prior 71,991 46,092
Prior, charge-offs 0  
Revolving loans amortized cost basis 84,810 82,442
Revolving loans amortized cost basis, charge-offs 0  
Revolving loans converted to term 0 0
Revolving loans converted to term, charge-offs 0  
Total 339,723 283,125
Total, charge-offs 28  
Agricultural land, production and other loans to farmers | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 52,762 62,959
Fiscal year before current fiscal year 61,469 18,469
Two years before current fiscal year 19,627 20,924
Three years before current fiscal year 19,936 24,465
Four years before current fiscal year 25,131 22,246
Prior 69,241 42,529
Revolving loans amortized cost basis 81,518 80,039
Revolving loans converted to term 0 0
Total 329,684 271,631
Agricultural land, production and other loans to farmers | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 35 590
Fiscal year before current fiscal year 568 1,636
Two years before current fiscal year 1,484 22
Three years before current fiscal year 0 499
Four years before current fiscal year 54 0
Prior 1,311 1,478
Revolving loans amortized cost basis 2,700 1,182
Revolving loans converted to term 0 0
Total 6,152 5,407
Agricultural land, production and other loans to farmers | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 600
Fiscal year before current fiscal year 0 2,165
Two years before current fiscal year 1,752 16
Three years before current fiscal year 0 0
Four years before current fiscal year 16 0
Prior 1,439 2,085
Revolving loans amortized cost basis 592 1,221
Revolving loans converted to term 0 0
Total 3,799 6,087
Agricultural land, production and other loans to farmers | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0  
Fiscal year before current fiscal year 0  
Two years before current fiscal year 0  
Three years before current fiscal year 88  
Four years before current fiscal year 0  
Prior 0  
Revolving loans amortized cost basis 0  
Revolving loans converted to term 0  
Total 88  
Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 116,898 306,797
Current fiscal year, charge-offs   0
Fiscal year before current fiscal year 389,612 332,831
Fiscal year before current fiscal year, charge-offs   63
Two years before current fiscal year 297,057 101,228
Two years before current fiscal year, charge-offs   0
Three years before current fiscal year 95,947 29,100
Three years before current fiscal year, charge-offs   0
Four years before current fiscal year 27,606 9,604
Four years before current fiscal year, charge-offs   1
Prior 16,541 9,954
Prior, charge-offs   0
Revolving loans amortized cost basis 15,822 15,261
Revolving loans amortized cost basis, charge-offs   0
Revolving loans converted to term 0 0
Revolving loans converted to term, charge-offs   0
Total 959,483 804,775
Total, charge-offs   64
Construction | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 116,898 231,041
Fiscal year before current fiscal year 385,881 313,838
Two years before current fiscal year 277,245 100,587
Three years before current fiscal year 86,737 17,515
Four years before current fiscal year 16,207 921
Prior 16,193 9,954
Revolving loans amortized cost basis 15,822 15,261
Revolving loans converted to term 0 0
Total 914,983 689,117
Construction | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 41,580
Fiscal year before current fiscal year 3,731 6,104
Two years before current fiscal year 19,812 0
Three years before current fiscal year 9,210 0
Four years before current fiscal year 0 8,683
Prior 9 0
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Total 32,762 56,367
Construction | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 34,176
Fiscal year before current fiscal year 0 12,889
Two years before current fiscal year 0 641
Three years before current fiscal year 0 11,585
Four years before current fiscal year 11,399 0
Prior 339 0
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Total 11,738 59,291
Commercial real estate, non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 319,592 599,642
Current fiscal year, charge-offs 0 0
Fiscal year before current fiscal year 563,746 305,708
Fiscal year before current fiscal year, charge-offs 3,476 0
Two years before current fiscal year 301,454 297,620
Two years before current fiscal year, charge-offs 0 0
Three years before current fiscal year 320,778 267,466
Three years before current fiscal year, charge-offs 0 451
Four years before current fiscal year 537,873 372,491
Four years before current fiscal year, charge-offs 0 0
Prior 1,137,710 463,717
Prior, charge-offs 29 16
Revolving loans amortized cost basis 27,749 32,022
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 0 0
Revolving loans converted to term, charge-offs 0 0
Total 3,208,902 2,338,666
Total, charge-offs 3,505 467
Commercial real estate, non-owner occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 319,592 482,587
Fiscal year before current fiscal year 508,484 259,106
Two years before current fiscal year 283,843 292,161
Three years before current fiscal year 294,956 258,662
Four years before current fiscal year 529,131 367,482
Prior 1,065,362 458,340
Revolving loans amortized cost basis 26,253 31,841
Revolving loans converted to term 0 0
Total 3,027,621 2,150,179
Commercial real estate, non-owner occupied | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 59,566
Fiscal year before current fiscal year 7,737 36,106
Two years before current fiscal year 2,473 340
Three years before current fiscal year 19,807 3,633
Four years before current fiscal year 3,442 2,308
Prior 36,026 4,715
Revolving loans amortized cost basis 1,000 100
Revolving loans converted to term 0 0
Total 70,485 106,768
Commercial real estate, non-owner occupied | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 57,489
Fiscal year before current fiscal year 47,525 10,496
Two years before current fiscal year 15,138 5,119
Three years before current fiscal year 6,015 5,171
Four years before current fiscal year 5,300 2,701
Prior 36,322 662
Revolving loans amortized cost basis 496 81
Revolving loans converted to term 0 0
Total 110,796 81,719
Commercial real estate, owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 263,177 333,004
Current fiscal year, charge-offs 0 0
Fiscal year before current fiscal year 279,582 166,399
Fiscal year before current fiscal year, charge-offs 0 243
Two years before current fiscal year 153,355 135,784
Two years before current fiscal year, charge-offs 0 152
Three years before current fiscal year 124,905 152,333
Three years before current fiscal year, charge-offs 107 0
Four years before current fiscal year 157,603 186,079
Four years before current fiscal year, charge-offs 5 0
Prior 408,643 228,815
Prior, charge-offs 211 4
Revolving loans amortized cost basis 52,999 34,686
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 0 0
Revolving loans converted to term, charge-offs 0 0
Total 1,440,264 1,237,100
Total, charge-offs 323 399
Commercial real estate, owner occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 260,900 332,121
Fiscal year before current fiscal year 271,174 136,005
Two years before current fiscal year 131,466 129,030
Three years before current fiscal year 117,636 141,679
Four years before current fiscal year 131,259 180,180
Prior 389,523 219,914
Revolving loans amortized cost basis 33,603 33,983
Revolving loans converted to term 0 0
Total 1,335,561 1,172,912
Commercial real estate, owner occupied | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 381 883
Fiscal year before current fiscal year 3,943 16,592
Two years before current fiscal year 3,077 1,426
Three years before current fiscal year 5,392 4,922
Four years before current fiscal year 12,255 4,838
Prior 7,580 1,075
Revolving loans amortized cost basis 19,151 443
Revolving loans converted to term 0 0
Total 51,779 30,179
Commercial real estate, owner occupied | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 1,896 0
Fiscal year before current fiscal year 4,448 13,510
Two years before current fiscal year 18,481 5,328
Three years before current fiscal year 1,811 5,732
Four years before current fiscal year 14,089 1,061
Prior 10,949 7,826
Revolving loans amortized cost basis 245 260
Revolving loans converted to term 0 0
Total 51,919 33,717
Commercial real estate, owner occupied | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 0
Fiscal year before current fiscal year 17 292
Two years before current fiscal year 331 0
Three years before current fiscal year 66 0
Four years before current fiscal year 0 0
Prior 591 0
Revolving loans amortized cost basis 0 0
Revolving loans converted to term 0 0
Total 1,005 292
Residential    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 275,036 310,692
Current fiscal year, charge-offs 0 0
Fiscal year before current fiscal year 314,048 169,851
Fiscal year before current fiscal year, charge-offs 137 114
Two years before current fiscal year 182,527 400,207
Two years before current fiscal year, charge-offs 22 814
Three years before current fiscal year 361,810 630,497
Three years before current fiscal year, charge-offs 436 737
Four years before current fiscal year 511,983 363,495
Four years before current fiscal year, charge-offs 506 102
Prior 765,037 537,720
Prior, charge-offs 435 163
Revolving loans amortized cost basis 6,976 7,802
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 1,959 46
Revolving loans converted to term, charge-offs 0 0
Total 2,419,376 2,420,310
Total, charge-offs 1,536 1,930
Residential | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 274,724 310,019
Fiscal year before current fiscal year 310,616 167,128
Two years before current fiscal year 179,590 389,574
Three years before current fiscal year 350,216 613,787
Four years before current fiscal year 493,245 352,662
Prior 733,478 528,875
Revolving loans amortized cost basis 3,431 7,188
Revolving loans converted to term 1,699 46
Total 2,346,999 2,369,279
Residential | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 312 345
Fiscal year before current fiscal year 1,459 1,312
Two years before current fiscal year 314 6,116
Three years before current fiscal year 2,183 9,565
Four years before current fiscal year 5,168 5,993
Prior 8,488 4,926
Revolving loans amortized cost basis 0 346
Revolving loans converted to term 0 0
Total 17,924 28,603
Residential | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 328
Fiscal year before current fiscal year 1,973 1,411
Two years before current fiscal year 2,402 4,517
Three years before current fiscal year 9,411 7,145
Four years before current fiscal year 13,570 4,840
Prior 22,942 3,919
Revolving loans amortized cost basis 3,199 268
Revolving loans converted to term 260 0
Total 53,757 22,428
Residential | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0  
Fiscal year before current fiscal year 0  
Two years before current fiscal year 221  
Three years before current fiscal year 0  
Four years before current fiscal year 0  
Prior 129  
Revolving loans amortized cost basis 346  
Revolving loans converted to term 0  
Total 696  
Home equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 2,926 10,233
Current fiscal year, charge-offs 0 0
Fiscal year before current fiscal year 8,100 3,694
Fiscal year before current fiscal year, charge-offs 0 92
Two years before current fiscal year 3,550 3,431
Two years before current fiscal year, charge-offs 2 8
Three years before current fiscal year 4,612 21,829
Three years before current fiscal year, charge-offs 107 653
Four years before current fiscal year 20,244 43,500
Four years before current fiscal year, charge-offs 24 563
Prior 47,592 10,630
Prior, charge-offs 258 204
Revolving loans amortized cost basis 1,041,026 615,754
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 10,990 1,909
Revolving loans converted to term, charge-offs 0 0
Total 1,139,040 710,980
Total, charge-offs 391 1,520
Home equity | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 2,926 10,173
Fiscal year before current fiscal year 8,100 3,020
Two years before current fiscal year 3,456 3,431
Three years before current fiscal year 3,877 21,442
Four years before current fiscal year 19,384 42,749
Prior 46,330 10,194
Revolving loans amortized cost basis 1,014,997 608,020
Revolving loans converted to term 10,501 1,470
Total 1,109,571 700,499
Home equity | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 0
Fiscal year before current fiscal year 0 674
Two years before current fiscal year 0 0
Three years before current fiscal year 0 297
Four years before current fiscal year 554 447
Prior 233 59
Revolving loans amortized cost basis 9,571 5,097
Revolving loans converted to term 183 329
Total 10,541 6,903
Home equity | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0 60
Fiscal year before current fiscal year 0 0
Two years before current fiscal year 94 0
Three years before current fiscal year 735 90
Four years before current fiscal year 306 304
Prior 1,029 377
Revolving loans amortized cost basis 16,458 2,637
Revolving loans converted to term 306 110
Total 18,928 3,578
Individuals' loans for household and other personal expenditures    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 31,891 40,586
Current fiscal year, charge-offs 82 307
Fiscal year before current fiscal year 26,548 16,664
Fiscal year before current fiscal year, charge-offs 478 618
Two years before current fiscal year 11,906 12,184
Two years before current fiscal year, charge-offs 418 612
Three years before current fiscal year 8,103 19,151
Three years before current fiscal year, charge-offs 384 396
Four years before current fiscal year 13,615 5,219
Four years before current fiscal year, charge-offs 91 149
Prior 4,316 3,977
Prior, charge-offs 111 83
Revolving loans amortized cost basis 58,328 55,866
Revolving loans amortized cost basis, charge-offs 0 0
Revolving loans converted to term 3,232 1,789
Revolving loans converted to term, charge-offs 0 0
Total 157,939 155,436
Total, charge-offs 1,564 2,165
Individuals' loans for household and other personal expenditures | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 31,794 40,478
Fiscal year before current fiscal year 26,091 16,525
Two years before current fiscal year 11,679 12,010
Three years before current fiscal year 7,924 19,038
Four years before current fiscal year 13,500 5,067
Prior 4,217 3,961
Revolving loans amortized cost basis 57,668 55,751
Revolving loans converted to term 3,074 1,649
Total 155,947 154,479
Individuals' loans for household and other personal expenditures | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 51 108
Fiscal year before current fiscal year 301 139
Two years before current fiscal year 180 174
Three years before current fiscal year 91 113
Four years before current fiscal year 62 152
Prior 51 16
Revolving loans amortized cost basis 404 115
Revolving loans converted to term 59 140
Total 1,199 957
Individuals' loans for household and other personal expenditures | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 46  
Fiscal year before current fiscal year 156  
Two years before current fiscal year 47  
Three years before current fiscal year 88  
Four years before current fiscal year 53  
Prior 48  
Revolving loans amortized cost basis 256  
Revolving loans converted to term 99  
Total 793  
Public finance and other commercial loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 69,896 134,004
Fiscal year before current fiscal year 89,692 144,742
Two years before current fiscal year 141,261 52,795
Three years before current fiscal year 52,060 198,964
Four years before current fiscal year 200,988 185,906
Prior 569,118 407,974
Revolving loans amortized cost basis 234,660 238,648
Revolving loans converted to term 0 0
Total 1,357,675 1,363,033
Public finance and other commercial loans | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 69,896 134,004
Fiscal year before current fiscal year 89,692 144,742
Two years before current fiscal year 141,261 52,795
Three years before current fiscal year 52,060 198,964
Four years before current fiscal year 200,988 185,906
Prior 569,047 407,974
Revolving loans amortized cost basis 227,946 238,648
Revolving loans converted to term 0 0
Total 1,350,890 $ 1,363,033
Public finance and other commercial loans | Special Mention    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0  
Fiscal year before current fiscal year 0  
Two years before current fiscal year 0  
Three years before current fiscal year 0  
Four years before current fiscal year 0  
Prior 0  
Revolving loans amortized cost basis 6,714  
Revolving loans converted to term 0  
Total 6,714  
Public finance and other commercial loans | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Current fiscal year 0  
Fiscal year before current fiscal year 0  
Two years before current fiscal year 0  
Three years before current fiscal year 0  
Four years before current fiscal year 0  
Prior 71  
Revolving loans amortized cost basis 0  
Revolving loans converted to term 0  
Total $ 71