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LOANS AND ALLOWANCE - Risk Grading of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | $ 1,622,879 | $ 2,870,871
Current fiscal year, charge-offs |  | 14,338
Fiscal year before current fiscal year | 2,244,226 | 2,546,512
Fiscal year before current fiscal year, charge-offs |  | 4,012
Two years before current fiscal year | 2,170,991 | 2,063,941
Two years before current fiscal year, charge-offs |  | 1,350
Three years before current fiscal year | 1,760,231 | 1,410,944
Three years before current fiscal year, charge-offs |  | 5,894
Four years before current fiscal year | 1,269,379 | 529,690
Four years before current fiscal year, charge-offs |  | 338
Prior | 1,284,424 | 892,018
Prior, charge-offs |  | 2,107
Revolving loans amortized cost basis | 2,280,064 | 2,164,828
Revolving loans amortized cost basis, charge-offs |  | 0
Revolving loans converted to term | 7,456 | 7,223
Revolving loans converted to term, charge-offs |  | 0
Total | 12,639,650 | 12,486,027
Total, charge-offs |  | 28,039
Commercial and industrial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 794,689 | 1,223,491
Current fiscal year, charge-offs | 1,100 | 13,973
Fiscal year before current fiscal year | 862,245 | 498,757
Fiscal year before current fiscal year, charge-offs | 31,803 | 2,711
Two years before current fiscal year | 318,654 | 272,427
Two years before current fiscal year, charge-offs | 205 | 576
Three years before current fiscal year | 209,036 | 93,854
Three years before current fiscal year, charge-offs | 8,425 | 5,665
Four years before current fiscal year | 75,088 | 52,403
Four years before current fiscal year, charge-offs | 345 | 78
Prior | 77,989 | 46,773
Prior, charge-offs | 133 | 261
Revolving loans amortized cost basis | 1,612,112 | 1,483,039
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 4 | 204
Revolving loans converted to term, charge-offs | 0 | 0
Total | 3,949,817 | 3,670,948
Total, charge-offs | 42,011 | 23,264
Commercial and industrial loans | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 778,502 | 1,175,967
Fiscal year before current fiscal year | 810,290 | 474,601
Two years before current fiscal year | 275,900 | 253,148
Three years before current fiscal year | 201,870 | 86,226
Four years before current fiscal year | 70,975 | 47,910
Prior | 76,151 | 45,020
Revolving loans amortized cost basis | 1,533,518 | 1,393,756
Revolving loans converted to term | 4 | 60
Total | 3,747,210 | 3,476,688
Commercial and industrial loans | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 2,913 | 34,356
Fiscal year before current fiscal year | 5,746 | 3,911
Two years before current fiscal year | 21,042 | 1,546
Three years before current fiscal year | 1,574 | 5,149
Four years before current fiscal year | 2,488 | 2,986
Prior | 11 | 241
Revolving loans amortized cost basis | 35,722 | 45,994
Revolving loans converted to term | 0 | 0
Total | 69,496 | 94,183
Commercial and industrial loans | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 13,274 | 12,311
Fiscal year before current fiscal year | 38,566 | 20,245
Two years before current fiscal year | 21,712 | 17,733
Three years before current fiscal year | 5,592 | 2,479
Four years before current fiscal year | 1,625 | 1,507
Prior | 1,827 | 1,512
Revolving loans amortized cost basis | 42,791 | 40,449
Revolving loans converted to term | 0 | 144
Total | 125,387 | 96,380
Commercial and industrial loans | Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 857
Fiscal year before current fiscal year | 7,643 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 81 | 2,840
Revolving loans converted to term | 0 | 0
Total | 7,724 | 3,697
Agricultural land, production and other loans to farmers |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 22,738 | 35,691
Fiscal year before current fiscal year | 24,922 | 38,561
Two years before current fiscal year | 36,022 | 31,511
Three years before current fiscal year | 29,786 | 31,502
Four years before current fiscal year | 29,361 | 12,995
Prior | 34,615 | 25,620
Revolving loans amortized cost basis | 62,482 | 87,534
Revolving loans converted to term | 0 | 0
Total | 239,926 | 263,414
Agricultural land, production and other loans to farmers | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 22,137 | 35,633
Fiscal year before current fiscal year | 24,869 | 38,145
Two years before current fiscal year | 34,809 | 31,511
Three years before current fiscal year | 29,077 | 31,048
Four years before current fiscal year | 28,845 | 12,995
Prior | 34,134 | 25,462
Revolving loans amortized cost basis | 61,444 | 87,534
Revolving loans converted to term | 0 | 0
Total | 235,315 | 262,328
Agricultural land, production and other loans to farmers | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 266
Two years before current fiscal year | 245 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Prior | 448 | 122
Revolving loans amortized cost basis | 250 | 0
Revolving loans converted to term | 0 | 0
Total | 943 | 388
Agricultural land, production and other loans to farmers | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 601 | 58
Fiscal year before current fiscal year | 53 | 150
Two years before current fiscal year | 968 | 0
Three years before current fiscal year | 709 | 454
Four years before current fiscal year | 516 | 0
Prior | 33 | 36
Revolving loans amortized cost basis | 788 | 0
Revolving loans converted to term | 0 | 0
Total | 3,668 | 698
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 187,351 | 430,923
Fiscal year before current fiscal year | 284,487 | 271,917
Two years before current fiscal year | 223,367 | 203,672
Three years before current fiscal year | 101,160 | 29,218
Four years before current fiscal year | 6,632 | 7,723
Prior | 9,460 | 2,357
Revolving loans amortized cost basis | 10,810 | 11,735
Revolving loans converted to term | 0 | 0
Total | 823,267 | 957,545
Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 166,149 | 403,578
Fiscal year before current fiscal year | 276,029 | 267,587
Two years before current fiscal year | 194,572 | 198,350
Three years before current fiscal year | 95,193 | 8,372
Four years before current fiscal year | 6,632 | 7,723
Prior | 9,460 | 2,357
Revolving loans amortized cost basis | 10,810 | 11,735
Revolving loans converted to term | 0 | 0
Total | 758,845 | 899,702
Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 25,894
Fiscal year before current fiscal year | 5,600 | 0
Two years before current fiscal year | 23,660 | 0
Three years before current fiscal year | 645 | 20,846
Four years before current fiscal year | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 29,905 | 46,740
Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 21,202 | 1,451
Fiscal year before current fiscal year | 2,858 | 4,330
Two years before current fiscal year | 5,135 | 5,322
Three years before current fiscal year | 5,322 | 0
Four years before current fiscal year | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term | 0 | 0
Total | 34,517 | 11,103
Commercial real estate, non-owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 342,687 | 470,118
Current fiscal year, charge-offs | 0 | 0
Fiscal year before current fiscal year | 340,949 | 535,962
Fiscal year before current fiscal year, charge-offs | 339 | 66
Two years before current fiscal year | 421,902 | 542,551
Two years before current fiscal year, charge-offs | 3 | 0
Three years before current fiscal year | 463,046 | 443,320
Three years before current fiscal year, charge-offs | 0 | 0
Four years before current fiscal year | 395,483 | 160,799
Four years before current fiscal year, charge-offs | 0 | 0
Prior | 345,721 | 231,061
Prior, charge-offs | 0 | 0
Revolving loans amortized cost basis | 13,745 | 17,028
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 | 2,323,533 | 2,400,839
Total, charge-offs | 342 | 66
Commercial real estate, non-owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 245,845 | 373,378
Fiscal year before current fiscal year | 303,828 | 504,280
Two years before current fiscal year | 399,269 | 535,327
Three years before current fiscal year | 451,607 | 418,553
Four years before current fiscal year | 373,231 | 141,320
Prior | 298,925 | 200,821
Revolving loans amortized cost basis | 13,660 | 16,744
Revolving loans converted to term | 0 | 0
Total | 2,086,365 | 2,190,423
Commercial real estate, non-owner occupied | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 77,354 | 76,382
Fiscal year before current fiscal year | 22,906 | 21,145
Two years before current fiscal year | 21,755 | 7,005
Three years before current fiscal year | 10,937 | 4,531
Four years before current fiscal year | 2,428 | 19,479
Prior | 45,158 | 27,941
Revolving loans amortized cost basis | 0 | 37
Revolving loans converted to term | 0 | 0
Total | 180,538 | 156,520
Commercial real estate, non-owner occupied | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 19,488 | 20,358
Fiscal year before current fiscal year | 2,927 | 10,537
Two years before current fiscal year | 189 | 219
Three years before current fiscal year | 502 | 20,236
Four years before current fiscal year | 19,824 | 0
Prior | 1,638 | 2,299
Revolving loans amortized cost basis | 85 | 247
Revolving loans converted to term | 0 | 0
Total | 44,653 | 53,896
Commercial real estate, non-owner occupied | Doubtful |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 |
Fiscal year before current fiscal year | 11,288 |
Two years before current fiscal year | 689 |
Three years before current fiscal year | 0 |
Four years before current fiscal year | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total | 11,977 |
Commercial real estate, owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 77,807 | 201,554
Current fiscal year, charge-offs | 0 | 48
Fiscal year before current fiscal year | 210,520 | 208,567
Fiscal year before current fiscal year, charge-offs | 0 | 0
Two years before current fiscal year | 191,777 | 269,848
Two years before current fiscal year, charge-offs | 0 | 0
Three years before current fiscal year | 257,150 | 270,527
Three years before current fiscal year, charge-offs | 0 | 0
Four years before current fiscal year | 241,170 | 100,388
Four years before current fiscal year, charge-offs | 9 | 2
Prior | 165,027 | 83,316
Prior, charge-offs | 0 | 0
Revolving loans amortized cost basis | 30,744 | 27,883
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 | 1,174,195 | 1,162,083
Total, charge-offs | 9 | 50
Commercial real estate, owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 75,597 | 176,750
Fiscal year before current fiscal year | 191,056 | 199,821
Two years before current fiscal year | 175,737 | 256,346
Three years before current fiscal year | 245,405 | 263,522
Four years before current fiscal year | 231,751 | 99,180
Prior | 159,142 | 77,485
Revolving loans amortized cost basis | 30,206 | 27,369
Revolving loans converted to term | 0 | 0
Total | 1,108,894 | 1,100,473
Commercial real estate, owner occupied | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 138 | 6,712
Fiscal year before current fiscal year | 3,230 | 5,034
Two years before current fiscal year | 15,076 | 9,319
Three years before current fiscal year | 6,717 | 2,460
Four years before current fiscal year | 5,301 | 919
Prior | 1,750 | 2,902
Revolving loans amortized cost basis | 260 | 514
Revolving loans converted to term | 0 | 0
Total | 32,472 | 27,860
Commercial real estate, owner occupied | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 2,072 | 18,092
Fiscal year before current fiscal year | 16,234 | 3,712
Two years before current fiscal year | 964 | 4,183
Three years before current fiscal year | 5,028 | 4,545
Four years before current fiscal year | 4,118 | 289
Prior | 4,135 | 2,929
Revolving loans amortized cost basis | 278 | 0
Revolving loans converted to term | 0 | 0
Total | 32,829 | 33,750
Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 112,712 | 398,334
Current fiscal year, charge-offs | 0 | 101
Fiscal year before current fiscal year | 430,932 | 704,355
Fiscal year before current fiscal year, charge-offs | 39 | 252
Two years before current fiscal year | 707,976 | 448,226
Two years before current fiscal year, charge-offs | 403 | 208
Three years before current fiscal year | 428,329 | 368,420
Three years before current fiscal year, charge-offs | 57 | 3
Four years before current fiscal year | 353,034 | 100,585
Four years before current fiscal year, charge-offs | 21 | 3
Prior | 332,506 | 263,618
Prior, charge-offs | 54 | 94
Revolving loans amortized cost basis | 5,402 | 5,219
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 14 | 164
Revolving loans converted to term, charge-offs | 0 | 0
Total | 2,370,905 | 2,288,921
Total, charge-offs | 574 | 661
Residential | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 111,630 | 395,363
Fiscal year before current fiscal year | 427,692 | 695,056
Two years before current fiscal year | 698,308 | 442,495
Three years before current fiscal year | 421,439 | 365,297
Four years before current fiscal year | 350,587 | 98,654
Prior | 322,922 | 254,718
Revolving loans amortized cost basis | 5,052 | 4,988
Revolving loans converted to term | 14 | 83
Total | 2,337,644 | 2,256,654
Residential | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 668 | 2,167
Fiscal year before current fiscal year | 2,480 | 5,591
Two years before current fiscal year | 5,301 | 3,202
Three years before current fiscal year | 3,917 | 1,924
Four years before current fiscal year | 1,197 | 1,065
Prior | 5,147 | 4,837
Revolving loans amortized cost basis | 350 | 200
Revolving loans converted to term | 0 | 81
Total | 19,060 | 19,067
Residential | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 414 | 804
Fiscal year before current fiscal year | 760 | 3,708
Two years before current fiscal year | 4,367 | 2,529
Three years before current fiscal year | 2,973 | 1,199
Four years before current fiscal year | 1,250 | 866
Prior | 4,437 | 4,063
Revolving loans amortized cost basis | 0 | 31
Revolving loans converted to term | 0 | 0
Total | 14,201 | 13,200
Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 6,781 | 9,438
Current fiscal year, charge-offs | 0 | 69
Fiscal year before current fiscal year | 7,648 | 30,499
Fiscal year before current fiscal year, charge-offs | 11 | 213
Two years before current fiscal year | 27,728 | 62,318
Two years before current fiscal year, charge-offs | 36 | 224
Three years before current fiscal year | 57,069 | 12,176
Three years before current fiscal year, charge-offs | 22 | 149
Four years before current fiscal year | 12,013 | 1,107
Four years before current fiscal year, charge-offs | 0 | 193
Prior | 5,043 | 4,000
Prior, charge-offs | 265 | 1,596
Revolving loans amortized cost basis | 508,043 | 491,950
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 6,779 | 6,083
Revolving loans converted to term, charge-offs | 0 | 0
Total | 631,104 | 617,571
Total, charge-offs | 334 | 2,444
Home equity | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 6,606 | 9,375
Fiscal year before current fiscal year | 7,648 | 29,784
Two years before current fiscal year | 26,336 | 61,591
Three years before current fiscal year | 56,066 | 11,084
Four years before current fiscal year | 10,956 | 1,092
Prior | 4,652 | 3,875
Revolving loans amortized cost basis | 500,801 | 484,330
Revolving loans converted to term | 6,294 | 5,837
Total | 619,359 | 606,968
Home equity | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 113 | 0
Fiscal year before current fiscal year | 0 | 715
Two years before current fiscal year | 1,340 | 0
Three years before current fiscal year | 406 | 1,092
Four years before current fiscal year | 1,057 | 15
Prior | 66 | 2
Revolving loans amortized cost basis | 5,117 | 5,031
Revolving loans converted to term | 245 | 149
Total | 8,344 | 7,004
Home equity | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 62 | 63
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 52 | 727
Three years before current fiscal year | 597 | 0
Four years before current fiscal year | 0 | 0
Prior | 325 | 123
Revolving loans amortized cost basis | 2,125 | 2,589
Revolving loans converted to term | 240 | 97
Total | 3,401 | 3,599
Individuals' loans for household and other personal expenditures |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 34,950 | 35,965
Current fiscal year, charge-offs | 22 | 147
Fiscal year before current fiscal year | 28,114 | 49,547
Fiscal year before current fiscal year, charge-offs | 353 | 770
Two years before current fiscal year | 37,429 | 28,525
Two years before current fiscal year, charge-offs | 232 | 342
Three years before current fiscal year | 14,811 | 6,795
Three years before current fiscal year, charge-offs | 120 | 77
Four years before current fiscal year | 4,093 | 2,071
Four years before current fiscal year, charge-offs | 25 | 62
Prior | 5,896 | 5,918
Prior, charge-offs | 32 | 156
Revolving loans amortized cost basis | 36,137 | 38,795
Revolving loans amortized cost basis, charge-offs | 0 | 0
Revolving loans converted to term | 659 | 772
Revolving loans converted to term, charge-offs | 0 | 0
Total | 162,089 | 168,388
Total, charge-offs | 784 | 1,554
Individuals' loans for household and other personal expenditures | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 34,921 | 35,781
Fiscal year before current fiscal year | 27,868 | 49,295
Two years before current fiscal year | 37,193 | 28,387
Three years before current fiscal year | 14,676 | 6,726
Four years before current fiscal year | 3,983 | 2,070
Prior | 5,878 | 5,904
Revolving loans amortized cost basis | 35,512 | 38,619
Revolving loans converted to term | 659 | 772
Total | 160,690 | 167,554
Individuals' loans for household and other personal expenditures | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 29 | 184
Fiscal year before current fiscal year | 224 | 246
Two years before current fiscal year | 226 | 138
Three years before current fiscal year | 135 | 69
Four years before current fiscal year | 110 | 0
Prior | 18 | 14
Revolving loans amortized cost basis | 623 | 176
Revolving loans converted to term | 0 | 0
Total | 1,365 | 827
Individuals' loans for household and other personal expenditures | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 22 | 6
Two years before current fiscal year | 10 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 1
Prior | 0 | 0
Revolving loans amortized cost basis | 2 | 0
Revolving loans converted to term | 0 | 0
Total | 34 | 7
Public finance and other commercial loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 43,164 | 65,357
Current fiscal year, charge-offs | 1,122 |
Fiscal year before current fiscal year | 54,409 | 208,347
Fiscal year before current fiscal year, charge-offs | 32,545 |
Two years before current fiscal year | 206,136 | 204,863
Two years before current fiscal year, charge-offs | 879 |
Three years before current fiscal year | 199,844 | 155,132
Three years before current fiscal year, charge-offs | 8,624 |
Four years before current fiscal year | 152,505 | 91,619
Four years before current fiscal year, charge-offs | 400 |
Prior | 308,167 | 229,355
Prior, charge-offs | 484 |
Revolving loans amortized cost basis | 589 | 1,645
Revolving loans amortized cost basis, charge-offs | 0 |
Revolving loans converted to term | 0 | 0
Revolving loans converted to term, charge-offs | 0 |
Total | 964,814 | 956,318
Total, charge-offs | 44,054 |
Public finance and other commercial loans | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Current fiscal year | 43,164 | 65,357
Fiscal year before current fiscal year | 54,409 | 208,347
Two years before current fiscal year | 206,136 | 204,863
Three years before current fiscal year | 199,844 | 155,132
Four years before current fiscal year | 152,505 | 91,619
Prior | 308,167 | 229,355
Revolving loans amortized cost basis | 589 | 1,645
Revolving loans converted to term | 0 | 0
Total | $ 964,814 | $ 956,318

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