v3.26.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Risk Rating and Payment Performance (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans $ 50,772,584   $ 50,772,584   $ 48,764,162
Writeoff, by Origination Year          
Current fiscal year 649 $ 183 649 $ 226  
Fiscal year before current fiscal year 2,461 7,295 7,411 8,546  
Two years before current fiscal year 632 1,469 12,321 6,678  
Three years before current fiscal year 12,583 8,823 21,039 14,490  
Four years before current fiscal year 6,788 5,089 11,428 13,733  
Prior 17,832 7,069 24,538 10,795  
Revolving 595 26 1,461 26  
Total 41,540 29,954 78,847 54,494  
Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 50,772,584   50,772,584   48,764,162
Commercial          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 16,112,685   16,112,685   14,983,861
Writeoff, by Origination Year          
Total 19,638 16,805 43,152 26,116  
Commercial | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 1,903,307   1,903,307   3,113,091
Originated one year before current year 3,010,821   3,010,821   2,078,846
Originated two years before current year 1,855,912   1,855,912   1,429,431
Originated three years before current year 1,192,582   1,192,582   1,180,654
Originated four years before current year 916,042   916,042   698,629
Originated more than five years before current fiscal year 2,058,044   2,058,044   1,657,541
Revolving 3,961,157   3,961,157   3,678,704
Revolving to Term 963,764   963,764   926,555
Total loans 15,861,629   15,861,629   14,763,451
Writeoff, by Origination Year          
Current fiscal year 478 0 478 0  
Fiscal year before current fiscal year 1,920 6,459 6,163 6,881  
Two years before current fiscal year 124 676 10,724 4,795  
Three years before current fiscal year 8,973 6,970 14,590 11,056  
Four years before current fiscal year 1,657 583 3,729 589  
Prior 6,486 2,117 7,077 2,795  
Revolving 0 0 391 0  
Total 19,638 16,805 43,152 26,116  
Commercial real estate          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 22,535,229   22,535,229   22,050,007
Writeoff, by Origination Year          
Total 18,155 9,438 26,622 21,098  
Commercial real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 2,226,626   2,226,626   3,773,282
Originated one year before current year 3,980,467   3,980,467   2,427,106
Originated two years before current year 2,471,820   2,471,820   2,805,294
Originated three years before current year 2,445,672   2,445,672   3,762,693
Originated four years before current year 3,317,248   3,317,248   2,192,606
Originated more than five years before current fiscal year 6,753,845   6,753,845   5,597,057
Revolving 163,729   163,729   231,381
Revolving to Term 990,393   990,393   1,084,918
Total loans 22,349,800   22,349,800   21,874,337
Writeoff, by Origination Year          
Current fiscal year 0 0 0 0  
Fiscal year before current fiscal year 0 0 0 0  
Two years before current fiscal year 0 0 0 303  
Three years before current fiscal year 2,713 1,205 4,783 1,956  
Four years before current fiscal year 4,610 4,000 6,185 11,996  
Prior 10,832 4,233 15,654 6,843  
Revolving 0 0 0 0  
Total 18,155 9,438 26,622 21,098  
BBCC          
Writeoff, by Origination Year          
Total 486 53 1,296 57  
BBCC | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 37,751   37,751   57,480
Originated one year before current year 54,119   54,119   54,323
Originated two years before current year 48,395   48,395   52,297
Originated three years before current year 43,419   43,419   36,485
Originated four years before current year 31,100   31,100   21,026
Originated more than five years before current fiscal year 97,348   97,348   78,395
Revolving 89,599   89,599   68,455
Revolving to Term 34,754   34,754   27,619
Total loans 436,485   436,485   396,080
Writeoff, by Origination Year          
Current fiscal year 0 0 0 0  
Fiscal year before current fiscal year 0 0 50 0  
Two years before current fiscal year 36 13 325 13  
Three years before current fiscal year 357 31 537 31  
Four years before current fiscal year 93 9 384 13  
Prior 0 0 0 0  
Revolving 0 0 0 0  
Total 486 53 1,296 57  
Residential real estate          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 577,746   577,746   957,369
Originated one year before current year 1,101,301   1,101,301   544,695
Originated two years before current year 475,368   475,368   595,035
Originated three years before current year 554,994   554,994   1,686,713
Originated four years before current year 1,624,852   1,624,852   1,965,514
Originated more than five years before current fiscal year 4,425,993   4,425,993   2,717,572
Revolving 0   0   0
Revolving to Term 578   578   598
Total loans 8,760,832   8,760,832   8,467,496
Writeoff, by Origination Year          
Current fiscal year 0 0 0 0  
Fiscal year before current fiscal year 0 0 0 0  
Two years before current fiscal year 0 0 0 0  
Three years before current fiscal year 0 0 0 0  
Four years before current fiscal year 0 0 26 0  
Prior 74 247 360 277  
Revolving 0 0 0 0  
Total 74 247 386 277  
Residential real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 8,760,832   8,760,832   8,467,496
Residential real estate | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 577,590   577,590   955,730
Originated one year before current year 1,096,002   1,096,002   539,011
Originated two years before current year 469,884   469,884   584,626
Originated three years before current year 544,155   544,155   1,668,796
Originated four years before current year 1,606,443   1,606,443   1,960,186
Originated more than five years before current fiscal year 4,386,908   4,386,908   2,684,743
Revolving 0   0   0
Revolving to Term 578   578   598
Total loans 8,681,560   8,681,560   8,393,690
Residential real estate | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 156   156   1,639
Originated one year before current year 5,299   5,299   5,684
Originated two years before current year 5,484   5,484   10,409
Originated three years before current year 10,839   10,839   17,917
Originated four years before current year 18,409   18,409   5,328
Originated more than five years before current fiscal year 39,085   39,085   32,829
Revolving 0   0   0
Revolving to Term 0   0   0
Total loans 79,272   79,272   73,806
Indirect          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 342,681   342,681   418,498
Originated one year before current year 355,399   355,399   297,367
Originated two years before current year 235,354   235,354   172,620
Originated three years before current year 130,193   130,193   125,514
Originated four years before current year 86,173   86,173   43,302
Originated more than five years before current fiscal year 33,642   33,642   17,779
Revolving 143   143   155
Revolving to Term 0   0   0
Total loans 1,183,585   1,183,585   1,075,235
Writeoff, by Origination Year          
Current fiscal year 103 12 103 12  
Fiscal year before current fiscal year 408 631 877 1,330  
Two years before current fiscal year 383 557 848 1,234  
Three years before current fiscal year 314 317 751 704  
Four years before current fiscal year 119 193 479 293  
Prior 68 56 149 127  
Revolving 0 0 0 0  
Total 1,395 1,766 3,207 3,700  
Indirect | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 1,183,585   1,183,585   1,075,235
Indirect | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 342,588   342,588   417,924
Originated one year before current year 354,289   354,289   296,068
Originated two years before current year 234,222   234,222   170,873
Originated three years before current year 128,792   128,792   124,182
Originated four years before current year 84,982   84,982   42,664
Originated more than five years before current fiscal year 33,017   33,017   17,567
Revolving 143   143   155
Revolving to Term 0   0   0
Total loans 1,178,033   1,178,033   1,069,433
Indirect | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 93   93   574
Originated one year before current year 1,110   1,110   1,299
Originated two years before current year 1,132   1,132   1,747
Originated three years before current year 1,401   1,401   1,332
Originated four years before current year 1,191   1,191   638
Originated more than five years before current fiscal year 625   625   212
Revolving 0   0   0
Revolving to Term 0   0   0
Total loans 5,552   5,552   5,802
Direct          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 33,500   33,500   72,436
Originated one year before current year 61,652   61,652   54,712
Originated two years before current year 44,014   44,014   49,792
Originated three years before current year 39,724   39,724   53,745
Originated four years before current year 56,824   56,824   42,009
Originated more than five years before current fiscal year 136,476   136,476   135,567
Revolving 219,678   219,678   236,832
Revolving to Term 5,739   5,739   4,204
Total loans 597,607   597,607   649,297
Writeoff, by Origination Year          
Current fiscal year 68 171 68 214  
Fiscal year before current fiscal year 133 205 321 335  
Two years before current fiscal year 89 223 424 333  
Three years before current fiscal year 226 300 378 743  
Four years before current fiscal year 309 304 625 842  
Prior 315 251 1,241 588  
Revolving 595 26 969 26  
Total 1,735 1,480 4,026 3,081  
Direct | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 597,607   597,607   649,297
Direct | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 33,487   33,487   72,393
Originated one year before current year 61,641   61,641   54,308
Originated two years before current year 43,786   43,786   49,357
Originated three years before current year 39,378   39,378   53,343
Originated four years before current year 55,357   55,357   41,664
Originated more than five years before current fiscal year 133,931   133,931   132,876
Revolving 219,672   219,672   236,832
Revolving to Term 5,525   5,525   4,193
Total loans 592,777   592,777   644,966
Direct | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 13   13   43
Originated one year before current year 11   11   404
Originated two years before current year 228   228   435
Originated three years before current year 346   346   402
Originated four years before current year 1,467   1,467   345
Originated more than five years before current fiscal year 2,545   2,545   2,691
Revolving 6   6   0
Revolving to Term 214   214   11
Total loans 4,830   4,830   4,331
Home equity          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   53
Originated one year before current year 53   53   111
Originated two years before current year 111   111   440
Originated three years before current year 345   345   2,165
Originated four years before current year 2,064   2,064   746
Originated more than five years before current fiscal year 19,111   19,111   20,272
Revolving 1,470,361   1,470,361   1,443,802
Revolving to Term 90,601   90,601   70,677
Total loans 1,582,646   1,582,646   1,538,266
Writeoff, by Origination Year          
Current fiscal year 0 0 0 0  
Fiscal year before current fiscal year 0 0 0 0  
Two years before current fiscal year 0 0 0 0  
Three years before current fiscal year 0 0 0 0  
Four years before current fiscal year 0 0 0 0  
Prior 57 165 57 165  
Revolving 0 0 101 0  
Total 57 $ 165 158 $ 165  
Home equity | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Total loans 1,582,646   1,582,646   1,538,266
Home equity | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   11
Originated one year before current year 53   53   71
Originated two years before current year 71   71   395
Originated three years before current year 281   281   1,227
Originated four years before current year 1,193   1,193   651
Originated more than five years before current fiscal year 14,646   14,646   16,913
Revolving 1,467,822   1,467,822   1,443,256
Revolving to Term 76,540   76,540   58,538
Total loans 1,560,606   1,560,606   1,521,062
Home equity | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   42
Originated one year before current year 0   0   40
Originated two years before current year 40   40   45
Originated three years before current year 64   64   938
Originated four years before current year 871   871   95
Originated more than five years before current fiscal year 4,465   4,465   3,359
Revolving 2,539   2,539   546
Revolving to Term 14,061   14,061   12,139
Total loans 22,040   22,040   17,204
Pass | Commercial | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 1,871,092   1,871,092   3,073,330
Originated one year before current year 2,956,426   2,956,426   1,895,772
Originated two years before current year 1,671,586   1,671,586   1,186,468
Originated three years before current year 985,812   985,812   1,064,904
Originated four years before current year 836,604   836,604   619,076
Originated more than five years before current fiscal year 1,915,799   1,915,799   1,567,563
Revolving 3,702,028   3,702,028   3,458,502
Revolving to Term 796,631   796,631   774,686
Total loans 14,735,978   14,735,978   13,640,301
Pass | Commercial real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 2,222,955   2,222,955   3,746,158
Originated one year before current year 3,929,498   3,929,498   2,363,809
Originated two years before current year 2,334,253   2,334,253   2,510,901
Originated three years before current year 2,073,302   2,073,302   3,325,135
Originated four years before current year 2,790,586   2,790,586   1,945,116
Originated more than five years before current fiscal year 6,115,231   6,115,231   5,082,931
Revolving 151,653   151,653   169,450
Revolving to Term 902,194   902,194   886,279
Total loans 20,519,672   20,519,672   20,029,779
Pass | BBCC | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 37,165   37,165   57,344
Originated one year before current year 53,988   53,988   53,469
Originated two years before current year 47,789   47,789   50,466
Originated three years before current year 42,235   42,235   35,366
Originated four years before current year 30,268   30,268   20,106
Originated more than five years before current fiscal year 94,373   94,373   75,805
Revolving 85,108   85,108   65,971
Revolving to Term 27,457   27,457   20,036
Total loans 418,383   418,383   378,563
Special Mention | Commercial | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 26,182   26,182   23,368
Originated one year before current year 31,903   31,903   84,827
Originated two years before current year 95,687   95,687   88,803
Originated three years before current year 72,440   72,440   18,830
Originated four years before current year 20,039   20,039   7,878
Originated more than five years before current fiscal year 11,691   11,691   8,161
Revolving 121,703   121,703   82,334
Revolving to Term 8,147   8,147   14,990
Total loans 387,792   387,792   329,191
Special Mention | Commercial real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 2,669   2,669   12,351
Originated one year before current year 14,374   14,374   20,695
Originated two years before current year 14,760   14,760   85,266
Originated three years before current year 28,664   28,664   97,148
Originated four years before current year 90,982   90,982   102,821
Originated more than five years before current fiscal year 143,033   143,033   107,590
Revolving 3,681   3,681   16,239
Revolving to Term 8,244   8,244   24,962
Total loans 306,407   306,407   467,072
Special Mention | BBCC | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 564   564   0
Originated one year before current year 54   54   663
Originated two years before current year 389   389   834
Originated three years before current year 253   253   512
Originated four years before current year 494   494   535
Originated more than five years before current fiscal year 1,695   1,695   1,490
Revolving 2,810   2,810   2,281
Revolving to Term 4,696   4,696   3,323
Total loans 10,955   10,955   9,638
Substandard | Commercial | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 6,033   6,033   16,253
Originated one year before current year 12,860   12,860   89,293
Originated two years before current year 75,756   75,756   113,232
Originated three years before current year 100,408   100,408   62,649
Originated four years before current year 30,899   30,899   68,265
Originated more than five years before current fiscal year 102,488   102,488   56,616
Revolving 127,855   127,855   129,209
Revolving to Term 103,241   103,241   85,729
Total loans 559,540   559,540   621,246
Substandard | Commercial real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 1,002   1,002   14,773
Originated one year before current year 36,595   36,595   34,761
Originated two years before current year 116,300   116,300   184,806
Originated three years before current year 308,911   308,911   294,789
Originated four years before current year 398,088   398,088   116,261
Originated more than five years before current fiscal year 423,298   423,298   321,725
Revolving 8,395   8,395   45,692
Revolving to Term 61,581   61,581   120,284
Total loans 1,354,170   1,354,170   1,133,091
Substandard | BBCC | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 22   22   86
Originated one year before current year 77   77   191
Originated two years before current year 217   217   474
Originated three years before current year 598   598   304
Originated four years before current year 233   233   26
Originated more than five years before current fiscal year 530   530   724
Revolving 1,681   1,681   203
Revolving to Term 1,651   1,651   2,877
Total loans 5,009   5,009   4,885
Nonaccrual | Commercial | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   140
Originated one year before current year 748   748   1,617
Originated two years before current year 2,256   2,256   6,003
Originated three years before current year 2,440   2,440   7,053
Originated four years before current year 631   631   1,001
Originated more than five years before current fiscal year 4,422   4,422   654
Revolving 0   0   8,659
Revolving to Term 12,471   12,471   1,944
Total loans 22,968   22,968   27,071
Nonaccrual | Commercial real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   0
Originated one year before current year 0   0   4,721
Originated two years before current year 3,539   3,539   1,282
Originated three years before current year 2,178   2,178   6,905
Originated four years before current year 2,497   2,497   5,442
Originated more than five years before current fiscal year 3,818   3,818   24,308
Revolving 0   0   0
Revolving to Term 743   743   23,642
Total loans 12,775   12,775   66,300
Nonaccrual | BBCC | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   50
Originated one year before current year 0   0   0
Originated two years before current year 0   0   60
Originated three years before current year 333   333   98
Originated four years before current year 105   105   359
Originated more than five years before current fiscal year 395   395   345
Revolving 0   0   0
Revolving to Term 319   319   1,115
Total loans 1,152   1,152   2,027
Doubtful | Commercial | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   0
Originated one year before current year 8,884   8,884   7,337
Originated two years before current year 10,627   10,627   34,925
Originated three years before current year 31,482   31,482   27,218
Originated four years before current year 27,869   27,869   2,409
Originated more than five years before current fiscal year 23,644   23,644   24,547
Revolving 9,571   9,571   0
Revolving to Term 43,274   43,274   49,206
Total loans 155,351   155,351   145,642
Doubtful | Commercial real estate | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   0
Originated one year before current year 0   0   3,120
Originated two years before current year 2,968   2,968   23,039
Originated three years before current year 32,617   32,617   38,716
Originated four years before current year 35,095   35,095   22,966
Originated more than five years before current fiscal year 68,465   68,465   60,503
Revolving 0   0   0
Revolving to Term 17,631   17,631   29,751
Total loans 156,776   156,776   178,095
Doubtful | BBCC | Portfolio Segment After Reclassifications          
Financing Receivable, Credit Quality Indicator [Line Items]          
Originated in current fiscal year 0   0   0
Originated one year before current year 0   0   0
Originated two years before current year 0   0   463
Originated three years before current year 0   0   205
Originated four years before current year 0   0   0
Originated more than five years before current fiscal year 355   355   31
Revolving 0   0   0
Revolving to Term 631   631   268
Total loans $ 986   $ 986   $ 967