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Allowance for Credit Losses - Loan Balances by Year of Origination and Performing and Nonperforming Status (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | $ 1,271,764 | $ 1,380,130
Year two | 1,214,107 | 772,783
Year three | 586,544 | 961,071
Year four | 725,517 | 606,970
Year five | 449,759 | 431,724
More than five years | 1,528,088 | 1,591,979
Revolving | 1,381,517 | 1,226,925
Revolving-Term | 26,673 | 28,408
Total | 7,183,969 | 6,999,990
Accruing TDRs |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 1,271,764 | 1,380,089
Year two | 1,213,905 | 771,819
Year three | 585,892 | 940,641
Year four | 724,629 | 602,938
Year five | 448,121 | 421,125
More than five years | 1,513,912 | 1,564,501
Revolving | 1,380,980 | 1,224,949
Revolving-Term | 25,714 | 27,638
Total | 7,164,917 | 6,933,699
Nonaccruing TDRs |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 41
Year two | 202 | 964
Year three | 652 | 20,430
Year four | 888 | 4,032
Year five | 1,638 | 10,599
More than five years | 14,176 | 27,478
Revolving | 537 | 1,976
Revolving-Term | 959 | 770
Total | 19,052 | 66,291
Commercial | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 292,732 | 385,347
Year two | 360,423 | 317,359
Year three | 269,049 | 468,720
Year four | 449,493 | 334,743
Year five | 261,941 | 266,019
More than five years | 883,535 | 881,391
Revolving | 21,666 | 36,948
Revolving-Term | 0 | 0
Total | 2,538,839 | 2,690,528
Commercial | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 253,696 | 437,529
Year two | 289,448 | 126,371
Year three | 88,544 | 134,417
Year four | 73,998 | 86,912
Year five | 65,911 | 41,422
More than five years | 147,273 | 136,470
Revolving | 591,522 | 550,402
Revolving-Term | 0 | 0
Total | 1,510,392 | 1,513,523
Commercial | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 120,655 | 142,321
Year two | 170,691 | 110,562
Year three | 40,762 | 113,532
Year four | 14,442 | 16,838
Year five | 3,953 | 989
More than five years | 4,176 | 10,477
Revolving | 27,284 | 30,036
Revolving-Term | 0 | 0
Total | 381,963 | 424,755
Commercial | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 287,679 | 257,409
Year two | 233,723 | 108,048
Year three | 91,149 | 144,976
Year four | 109,731 | 115,228
Year five | 84,889 | 81,889
More than five years | 292,211 | 318,735
Revolving | 105,271 | 108,230
Revolving-Term | 1,291 | 1,179
Total | 1,205,944 | 1,135,693
Commercial | Accruing TDRs | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 292,732 | 385,347
Year two | 360,423 | 317,359
Year three | 269,049 | 461,613
Year four | 449,493 | 332,482
Year five | 261,941 | 259,723
More than five years | 876,435 | 865,567
Revolving | 21,666 | 36,948
Revolving-Term | 0 | 0
Total | 2,531,739 | 2,659,039
Commercial | Accruing TDRs | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 253,696 | 437,529
Year two | 289,448 | 126,371
Year three | 88,544 | 123,944
Year four | 73,998 | 86,852
Year five | 65,858 | 38,540
More than five years | 147,273 | 136,427
Revolving | 591,292 | 548,622
Revolving-Term | 0 | 0
Total | 1,510,109 | 1,498,285
Commercial | Accruing TDRs | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 120,655 | 142,321
Year two | 170,691 | 110,562
Year three | 40,762 | 111,445
Year four | 14,442 | 16,838
Year five | 3,953 | 989
More than five years | 3,792 | 10,093
Revolving | 27,284 | 30,036
Revolving-Term | 0 | 0
Total | 381,579 | 422,284
Commercial | Accruing TDRs | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 287,679 | 257,368
Year two | 233,656 | 107,984
Year three | 91,149 | 144,689
Year four | 109,479 | 113,820
Year five | 83,689 | 81,195
More than five years | 289,435 | 311,673
Revolving | 105,172 | 108,202
Revolving-Term | 1,195 | 1,122
Total | 1,201,454 | 1,126,052
Commercial | Nonaccruing TDRs | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 |
Year three | 0 | 7,107
Year four | 0 | 2,261
Year five | 0 | 6,296
More than five years | 7,100 | 15,824
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 7,100 | 31,488
Commercial | Nonaccruing TDRs | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 10,473
Year four | 0 | 60
Year five | 53 | 2,882
More than five years | 0 | 43
Revolving | 230 | 1,780
Revolving-Term | 0 | 0
Total | 283 | 15,239
Commercial | Nonaccruing TDRs | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 2,087
Year four | 0 | 0
Year five | 0 | 0
More than five years | 384 | 384
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 384 | 2,471
Commercial | Nonaccruing TDRs | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 41
Year two | 67 | 64
Year three | 0 | 287
Year four | 252 | 1,408
Year five | 1,200 | 694
More than five years | 2,776 | 7,062
Revolving | 99 | 28
Revolving-Term | 96 | 57
Total | 4,490 | 9,641
Consumer | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 296,948 | 137,465
Year two | 149,003 | 100,995
Year three | 91,613 | 92,165
Year four | 74,583 | 50,156
Year five | 32,031 | 40,384
More than five years | 200,169 | 238,462
Revolving | 553,649 | 443,406
Revolving-Term | 23,957 | 24,552
Total | 1,421,953 | 1,127,585
Consumer | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 20,054 | 20,059
Year two | 10,819 | 9,448
Year three | 5,427 | 7,261
Year four | 3,270 | 3,093
Year five | 1,034 | 1,021
More than five years | 724 | 6,444
Revolving | 82,125 | 57,903
Revolving-Term | 1,425 | 2,677
Total | 124,878 | 107,906
Consumer | Accruing TDRs | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 296,948 | 137,465
Year two | 148,868 | 100,253
Year three | 91,085 | 91,689
Year four | 73,947 | 49,853
Year five | 31,646 | 39,657
More than five years | 196,384 | 234,297
Revolving | 553,441 | 443,238
Revolving-Term | 23,108 | 23,839
Total | 1,415,427 | 1,120,291
Consumer | Accruing TDRs | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 20,054 | 20,059
Year two | 10,819 | 9,290
Year three | 5,303 | 7,261
Year four | 3,270 | 3,093
Year five | 1,034 | 1,021
More than five years | 593 | 6,444
Revolving | 82,125 | 57,903
Revolving-Term | 1,411 | 2,677
Total | 124,609 | 107,748
Consumer | Nonaccruing TDRs | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 135 | 742
Year three | 528 | 476
Year four | 636 | 303
Year five | 385 | 727
More than five years | 3,785 | 4,165
Revolving | 208 | 168
Revolving-Term | 849 | 713
Total | 6,526 | 7,294
Consumer | Nonaccruing TDRs | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 158
Year three | 124 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 131 | 0
Revolving | 0 | 0
Revolving-Term | 14 | 0
Total | $ 269 | $ 158

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