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Loans and Allowance for Credit Losses - Schedule of Risk Rating and Payment Performance (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Risk Category Of Loans [Line Items] |  |
Total loans | $ 13,601,846 | $ 13,786,479
Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 13,601,846 | 13,786,479
Commercial |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 3,391,769 | 3,956,422
Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 944,296 | 1,709,047
Originated one year before current year | 589,907 | 440,462
Originated two years before current year | 289,294 | 202,025
Originated three years before current year | 112,326 | 256,753
Originated four years before current year | 171,251 | 130,543
Originated more than five years before current fiscal year | 244,517 | 281,337
Revolving | 689,957 | 576,278
Revolving to Term | 158,664 | 161,255
Total loans | 3,200,212 | 3,757,700
Commercial real estate |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 6,380,674 | 5,946,512
Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 1,596,481 | 1,556,959
Originated one year before current year | 1,514,176 | 1,099,162
Originated two years before current year | 898,738 | 794,524
Originated three years before current year | 492,535 | 779,186
Originated four years before current year | 516,592 | 539,960
Originated more than five years before current fiscal year | 666,606 | 571,651
Revolving | 45,215 | 28,122
Revolving to Term | 491,141 | 405,247
Total loans | 6,221,484 | 5,774,811
BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 83,314 | 96,821
Originated one year before current year | 71,056 | 77,287
Originated two years before current year | 55,784 | 51,672
Originated three years before current year | 36,019 | 37,218
Originated four years before current year | 25,366 | 25,622
Originated more than five years before current fiscal year | 9,133 | 5,357
Revolving | 48,344 | 53,667
Revolving to Term | 21,731 | 22,779
Total loans | 350,747 | 370,423
Residential real estate |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 625,678 | 624,500
Originated one year before current year | 632,870 | 453,383
Originated two years before current year | 272,766 | 132,787
Originated three years before current year | 73,116 | 191,268
Originated four years before current year | 104,721 | 204,588
Originated more than five years before current fiscal year | 546,021 | 641,774
Revolving | 12 | 0
Revolving to Term | 105 | 122
Total loans | 2,255,289 | 2,248,422
Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 2,255,289 | 2,248,422
Residential real estate | Performing |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 625,582 | 624,435
Originated one year before current year | 632,705 | 453,132
Originated two years before current year | 272,600 | 132,107
Originated three years before current year | 72,766 | 190,376
Originated four years before current year | 103,866 | 202,457
Originated more than five years before current fiscal year | 529,293 | 620,999
Revolving | 12 | 0
Revolving to Term | 105 | 122
Total loans | 2,236,929 | 2,223,628
Residential real estate | Nonperforming |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 96 | 65
Originated one year before current year | 165 | 251
Originated two years before current year | 166 | 680
Originated three years before current year | 350 | 892
Originated four years before current year | 855 | 2,131
Originated more than five years before current fiscal year | 16,728 | 20,775
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans | 18,360 | 24,794
Indirect |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 361,747 | 353,011
Originated one year before current year | 231,680 | 253,957
Originated two years before current year | 147,592 | 135,670
Originated three years before current year | 69,023 | 97,253
Originated four years before current year | 42,028 | 52,654
Originated more than five years before current fiscal year | 21,060 | 21,280
Revolving | 0 | 0
Revolving to Term | 9 | 77
Total loans | 873,139 | 913,902
Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 873,139 | 913,902
Indirect | Performing |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 361,485 | 352,989
Originated one year before current year | 231,156 | 253,514
Originated two years before current year | 146,978 | 134,893
Originated three years before current year | 68,513 | 96,587
Originated four years before current year | 41,598 | 52,225
Originated more than five years before current fiscal year | 20,819 | 21,088
Revolving | 0 | 0
Revolving to Term | 9 | 77
Total loans | 870,558 | 911,373
Indirect | Nonperforming |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 262 | 22
Originated one year before current year | 524 | 443
Originated two years before current year | 614 | 777
Originated three years before current year | 510 | 666
Originated four years before current year | 430 | 429
Originated more than five years before current fiscal year | 241 | 192
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans | 2,581 | 2,529
Direct |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 34,071 | 32,521
Originated one year before current year | 16,188 | 29,330
Originated two years before current year | 14,526 | 30,681
Originated three years before current year | 14,712 | 16,246
Originated four years before current year | 7,467 | 8,774
Originated more than five years before current fiscal year | 16,367 | 19,991
Revolving | 36,854 | 26,032
Revolving to Term | 200 | 1,232
Total loans | 140,385 | 164,807
Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 140,385 | 164,807
Direct | Performing |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 34,058 | 32,499
Originated one year before current year | 16,135 | 29,189
Originated two years before current year | 14,396 | 30,510
Originated three years before current year | 14,579 | 16,182
Originated four years before current year | 7,432 | 8,527
Originated more than five years before current fiscal year | 15,831 | 19,465
Revolving | 36,812 | 26,028
Revolving to Term | 192 | 1,229
Total loans | 139,435 | 163,629
Direct | Nonperforming |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 13 | 22
Originated one year before current year | 53 | 141
Originated two years before current year | 130 | 171
Originated three years before current year | 133 | 64
Originated four years before current year | 35 | 247
Originated more than five years before current fiscal year | 536 | 526
Revolving | 42 | 4
Revolving to Term | 8 | 3
Total loans | 950 | 1,178
Home equity |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 0 | 1
Originated one year before current year | 0 | 1,034
Originated two years before current year | 649 | 444
Originated three years before current year | 358 | 891
Originated four years before current year | 576 | 249
Originated more than five years before current fiscal year | 1 | 116
Revolving | 539,315 | 529,369
Revolving to Term | 19,691 | 24,310
Total loans | 560,590 | 556,414
Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 560,590 | 556,414
Home equity | Performing |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 0 | 1
Originated one year before current year | 0 | 997
Originated two years before current year | 633 | 444
Originated three years before current year | 349 | 891
Originated four years before current year | 535 | 238
Originated more than five years before current fiscal year | 0 | 0
Revolving | 539,057 | 529,275
Revolving to Term | 16,768 | 20,314
Total loans | 557,342 | 552,160
Home equity | Nonperforming |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 0 | 0
Originated one year before current year | 0 | 37
Originated two years before current year | 16 | 0
Originated three years before current year | 9 | 0
Originated four years before current year | 41 | 11
Originated more than five years before current fiscal year | 1 | 116
Revolving | 258 | 94
Revolving to Term | 2,923 | 3,996
Total loans | 3,248 | 4,254
Consumer |  |
Risk Category Of Loans [Line Items] |  |
Total loans | 1,574,114 | 1,635,123
Pass | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 918,456 | 1,675,964
Originated one year before current year | 563,869 | 420,736
Originated two years before current year | 271,158 | 171,228
Originated three years before current year | 98,468 | 227,710
Originated four years before current year | 156,136 | 124,041
Originated more than five years before current fiscal year | 235,639 | 262,538
Revolving | 667,628 | 549,849
Revolving to Term | 130,470 | 148,508
Total loans | 3,041,824 | 3,580,574
Pass | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 1,555,880 | 1,537,226
Originated one year before current year | 1,474,271 | 1,041,305
Originated two years before current year | 846,921 | 749,102
Originated three years before current year | 481,508 | 677,119
Originated four years before current year | 462,176 | 496,086
Originated more than five years before current fiscal year | 611,680 | 513,658
Revolving | 42,609 | 28,122
Revolving to Term | 451,544 | 382,219
Total loans | 5,926,589 | 5,424,837
Pass | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 81,710 | 94,828
Originated one year before current year | 69,749 | 73,913
Originated two years before current year | 54,580 | 49,875
Originated three years before current year | 34,461 | 36,288
Originated four years before current year | 25,113 | 24,946
Originated more than five years before current fiscal year | 8,296 | 5,327
Revolving | 47,571 | 52,393
Revolving to Term | 18,778 | 19,353
Total loans | 340,258 | 356,923
Criticized | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 9,998 | 23,982
Originated one year before current year | 7,885 | 9,603
Originated two years before current year | 6,660 | 15,003
Originated three years before current year | 0 | 9,508
Originated four years before current year | 7,809 | 3,383
Originated more than five years before current fiscal year | 2,658 | 5,369
Revolving | 14,601 | 10,307
Revolving to Term | 10,076 | 2,685
Total loans | 59,687 | 79,840
Criticized | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 27,622 | 6,874
Originated one year before current year | 24,790 | 49,271
Originated two years before current year | 39,914 | 26,464
Originated three years before current year | 0 | 46,994
Originated four years before current year | 21,614 | 17,648
Originated more than five years before current fiscal year | 22,157 | 33,490
Revolving | 0 | 0
Revolving to Term | 34,387 | 19,804
Total loans | 170,484 | 200,545
Criticized | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 1,320 | 1,599
Originated one year before current year | 1,170 | 1,403
Originated two years before current year | 841 | 621
Originated three years before current year | 160 | 414
Originated four years before current year | 0 | 643
Originated more than five years before current fiscal year | 0 | 0
Revolving | 670 | 868
Revolving to Term | 1,578 | 1,259
Total loans | 5,739 | 6,807
Substandard | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 14,773 | 6,501
Originated one year before current year | 14,468 | 6,369
Originated two years before current year | 10,200 | 10,077
Originated three years before current year | 9,849 | 9,836
Originated four years before current year | 5,521 | 2,774
Originated more than five years before current fiscal year | 945 | 8,441
Revolving | 6,883 | 15,344
Revolving to Term | 10,322 | 3,049
Total loans | 72,961 | 62,391
Substandard | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 4,706 | 11,451
Originated one year before current year | 12,118 | 4,700
Originated two years before current year | 9,933 | 13,565
Originated three years before current year | 9,058 | 26,691
Originated four years before current year | 18,165 | 5,308
Originated more than five years before current fiscal year | 11,351 | 8,665
Revolving | 2,291 | 0
Revolving to Term | 4,339 | 2,911
Total loans | 71,961 | 73,291
Substandard | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 284 | 233
Originated one year before current year | 24 | 1,417
Originated two years before current year | 79 | 195
Originated three years before current year | 7 | 246
Originated four years before current year | 187 | 33
Originated more than five years before current fiscal year | 465 | 0
Revolving | 103 | 317
Revolving to Term | 239 | 701
Total loans | 1,388 | 3,142
Nonaccrual | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 1,069 | 2,600
Originated one year before current year | 3,507 | 3,754
Originated two years before current year | 1,276 | 4,701
Originated three years before current year | 3,721 | 6,951
Originated four years before current year | 1,448 | 49
Originated more than five years before current fiscal year | 0 | 4,379
Revolving | 845 | 778
Revolving to Term | 7,796 | 7,013
Total loans | 19,662 | 30,225
Nonaccrual | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 1,620 | 1,408
Originated one year before current year | 2,997 | 2,054
Originated two years before current year | 0 | 5,393
Originated three years before current year | 1,627 | 9,456
Originated four years before current year | 3,419 | 1,635
Originated more than five years before current fiscal year | 8,905 | 12,564
Revolving | 315 | 0
Revolving to Term | 871 | 313
Total loans | 19,754 | 32,823
Nonaccrual | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 0 | 161
Originated one year before current year | 88 | 551
Originated two years before current year | 0 | 134
Originated three years before current year | 0 | 200
Originated four years before current year | 66 | 0
Originated more than five years before current fiscal year | 162 | 0
Revolving | 0 | 89
Revolving to Term | 1,136 | 1,466
Total loans | 1,452 | 2,601
Doubtful | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 0 | 0
Originated one year before current year | 178 | 0
Originated two years before current year | 0 | 1,016
Originated three years before current year | 288 | 2,748
Originated four years before current year | 337 | 296
Originated more than five years before current fiscal year | 5,275 | 610
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans | 6,078 | 4,670
Doubtful | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 6,653 | 0
Originated one year before current year | 0 | 1,832
Originated two years before current year | 1,970 | 0
Originated three years before current year | 342 | 18,926
Originated four years before current year | 11,218 | 19,283
Originated more than five years before current fiscal year | 12,513 | 3,274
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans | 32,696 | 43,315
Doubtful | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Risk Category Of Loans [Line Items] |  |
Originated in current fiscal year | 0 | 0
Originated one year before current year | 25 | 3
Originated two years before current year | 284 | 847
Originated three years before current year | 1,391 | 70
Originated four years before current year | 0 | 0
Originated more than five years before current fiscal year | 210 | 30
Revolving | 0 | 0
Revolving to Term | 0 | 0
Total loans | $ 1,910 | $ 950

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