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Allowance for Credit Losses - Loan Balances by Year of Origination and Performing and Nonperforming Status (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | $ 952,159 | $ 1,380,130
Year two | 1,250,192 | 772,783
Year three | 614,941 | 961,071
Year four | 782,546 | 606,970
Year five | 474,779 | 431,724
More than five years | 1,608,076 | 1,591,979
Revolving | 1,387,431 | 1,226,925
Revolving-Term | 26,792 | 28,408
Total | 7,096,916 | 6,999,990
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 952,159 | 1,380,089
Year two | 1,250,056 | 771,819
Year three | 614,200 | 940,641
Year four | 781,286 | 602,938
Year five | 472,729 | 421,125
More than five years | 1,590,910 | 1,564,501
Revolving | 1,386,920 | 1,224,949
Revolving-Term | 25,879 | 27,638
Total | 7,074,139 | 6,933,699
Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 41
Year two | 136 | 964
Year three | 741 | 20,430
Year four | 1,260 | 4,032
Year five | 2,050 | 10,599
More than five years | 17,166 | 27,478
Revolving | 511 | 1,976
Revolving-Term | 913 | 770
Total | 22,777 | 66,291
Commercial Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 5,239,648 | 5,406,584
Commercial Loans | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 228,599 | 385,347
Year two | 366,573 | 317,359
Year three | 279,472 | 468,720
Year four | 454,921 | 334,743
Year five | 273,477 | 266,019
More than five years | 938,489 | 881,391
Revolving | 21,051 | 36,948
Revolving-Term | 0 | 0
Total | 2,562,582 | 2,690,528
Commercial Loans | Commercial real estate | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 228,599 | 385,347
Year two | 366,573 | 317,359
Year three | 279,472 | 461,613
Year four | 454,441 | 332,482
Year five | 273,477 | 259,723
More than five years | 931,136 | 865,567
Revolving | 21,051 | 36,948
Revolving-Term | 0 | 0
Total | 2,554,749 | 2,659,039
Commercial Loans | Commercial real estate | Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 |
Year three | 0 | 7,107
Year four | 480 | 2,261
Year five | 0 | 6,296
More than five years | 7,353 | 15,824
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 7,833 | 31,488
Commercial Loans | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 185,389 | 437,529
Year two | 308,442 | 126,371
Year three | 97,811 | 134,417
Year four | 89,270 | 86,912
Year five | 70,268 | 41,422
More than five years | 146,865 | 136,470
Revolving | 603,834 | 550,402
Revolving-Term | 0 | 0
Total | 1,501,879 | 1,513,523
Commercial Loans | Commercial and industrial | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 185,389 | 437,529
Year two | 308,442 | 126,371
Year three | 97,811 | 123,944
Year four | 89,270 | 86,852
Year five | 70,214 | 38,540
More than five years | 146,814 | 136,427
Revolving | 603,604 | 548,622
Revolving-Term | 0 | 0
Total | 1,501,544 | 1,498,285
Commercial Loans | Commercial and industrial | Nonperforming |  |
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 | 54 | 2,882
More than five years | 51 | 43
Revolving | 230 | 1,780
Revolving-Term | 0 | 0
Total | 335 | 15,239
Commercial Loans | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 83,458 | 142,321
Year two | 171,331 | 110,562
Year three | 43,840 | 113,532
Year four | 38,514 | 16,838
Year five | 4,331 | 989
More than five years | 5,047 | 10,477
Revolving | 28,758 | 30,036
Revolving-Term | 0 | 0
Total | 375,279 | 424,755
Commercial Loans | Commercial construction | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 83,458 | 142,321
Year two | 171,331 | 110,562
Year three | 43,840 | 111,445
Year four | 38,514 | 16,838
Year five | 4,331 | 989
More than five years | 4,663 | 10,093
Revolving | 28,758 | 30,036
Revolving-Term | 0 | 0
Total | 374,895 | 422,284
Commercial Loans | Commercial construction | Nonperforming |  |
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 Loans | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 213,494 | 257,409
Year two | 240,779 | 108,048
Year three | 94,289 | 144,976
Year four | 119,394 | 115,228
Year five | 92,528 | 81,889
More than five years | 307,630 | 318,735
Revolving | 108,141 | 108,230
Revolving-Term | 1,348 | 1,179
Total | 1,177,603 | 1,135,693
Commercial Loans | Business banking | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 213,494 | 257,368
Year two | 240,779 | 107,984
Year three | 94,289 | 144,689
Year four | 119,050 | 113,820
Year five | 90,907 | 81,195
More than five years | 303,348 | 311,673
Revolving | 108,039 | 108,202
Revolving-Term | 1,252 | 1,122
Total | 1,171,158 | 1,126,052
Commercial Loans | Business banking | Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 41
Year two | 0 | 64
Year three | 0 | 287
Year four | 344 | 1,408
Year five | 1,621 | 694
More than five years | 4,282 | 7,062
Revolving | 102 | 28
Revolving-Term | 96 | 57
Total | 6,445 | 9,641
Consumer Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 1,857,268 | 1,593,406
Consumer Loans | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total |  | 357,900
Consumer Loans | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 224,092 | 137,465
Year two | 151,021 | 100,995
Year three | 93,140 | 92,165
Year four | 76,389 | 50,156
Year five | 32,776 | 40,384
More than five years | 209,197 | 238,462
Revolving | 542,184 | 443,406
Revolving-Term | 24,166 | 24,552
Total | 1,352,965 | 1,127,585
Consumer Loans | Consumer real estate | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 224,092 | 137,465
Year two | 150,885 | 100,253
Year three | 92,672 | 91,689
Year four | 75,953 | 49,853
Year five | 32,401 | 39,657
More than five years | 204,232 | 234,297
Revolving | 542,005 | 443,238
Revolving-Term | 23,352 | 23,839
Total | 1,345,592 | 1,120,291
Consumer Loans | Consumer real estate | Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 136 | 742
Year three | 468 | 476
Year four | 436 | 303
Year five | 375 | 727
More than five years | 4,965 | 4,165
Revolving | 179 | 168
Revolving-Term | 814 | 713
Total | 7,373 | 7,294
Consumer Loans | Other Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 17,127 | 20,059
Year two | 12,046 | 9,448
Year three | 6,389 | 7,261
Year four | 4,058 | 3,093
Year five | 1,399 | 1,021
More than five years | 848 | 6,444
Revolving | 83,463 | 57,903
Revolving-Term | 1,278 | 2,677
Total | 126,608 | 107,906
Consumer Loans | Other Consumer | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 17,127 | 20,059
Year two | 12,046 | 9,290
Year three | 6,116 | 7,261
Year four | 4,058 | 3,093
Year five | 1,399 | 1,021
More than five years | 717 | 6,444
Revolving | 83,463 | 57,903
Revolving-Term | 1,275 | 2,677
Total | 126,201 | 107,748
Consumer Loans | Other Consumer | Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 158
Year three | 273 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 131 | 0
Revolving | 0 | 0
Revolving-Term | 3 | 0
Total | $ 407 | $ 158

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