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Allowance for Credit Losses - Loan Balances by Year of Origination and Internally Assigned Risk Rating (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | $ 287,583 | $ 1,380,130
Year two | 1,310,234 | 772,783
Year three | 725,508 | 961,071
Year four | 880,093 | 606,970
Year five | 558,798 | 431,724
More than five years | 1,854,855 | 1,591,979
Revolving | 1,317,892 | 1,226,925
Revolving-Term | 28,948 | 28,408
Total | 6,963,911 | 6,999,990
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 287,543 | 1,379,856
Year two | 1,310,008 | 768,961
Year three | 720,453 | 879,574
Year four | 811,828 | 576,166
Year five | 527,057 | 370,013
More than five years | 1,600,692 | 1,361,826
Revolving | 1,298,915 | 1,209,363
Revolving-Term | 25,288 | 24,964
Total | 6,581,784 | 6,570,723
Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 150
Year two | 142 | 151
Year three | 1,313 | 42,832
Year four | 35,809 | 10,312
Year five | 7,853 | 41,574
More than five years | 112,503 | 88,094
Revolving | 10,023 | 9,047
Revolving-Term | 110 | 111
Total | 167,753 | 192,271
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 40 | 124
Year two | 84 | 3,671
Year three | 3,742 | 36,888
Year four | 27,950 | 20,492
Year five | 23,888 | 20,137
More than five years | 141,655 | 142,059
Revolving | 8,954 | 8,515
Revolving-Term | 3,550 | 3,333
Total | 209,863 | 235,219
Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 1,777
Year four | 4,506 | 0
Year five | 0 | 0
More than five years | 5 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 4,511 | 1,777
Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 5,331,863 | 5,406,584
Commercial | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 92,158 | 385,347
Year two | 367,329 | 317,359
Year three | 335,124 | 468,720
Year four | 462,811 | 334,743
Year five | 328,712 | 266,019
More than five years | 1,083,184 | 881,391
Revolving | 36,481 | 36,948
Revolving-Term | 0 | 0
Total | 2,705,799 | 2,690,528
Commercial | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 42,350 | 437,529
Year two | 369,108 | 126,371
Year three | 107,500 | 134,417
Year four | 113,383 | 86,912
Year five | 79,411 | 41,422
More than five years | 162,305 | 136,470
Revolving | 584,449 | 550,402
Revolving-Term | 0 | 0
Total | 1,458,506 | 1,513,523
Commercial | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 24,551 | 142,321
Year two | 161,638 | 110,562
Year three | 72,342 | 113,532
Year four | 77,597 | 16,838
Year five | 4,988 | 989
More than five years | 11,095 | 10,477
Revolving | 31,026 | 30,036
Revolving-Term | 0 | 0
Total | 383,237 | 424,755
Commercial | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 66,205 | 257,409
Year two | 255,151 | 108,048
Year three | 105,295 | 144,976
Year four | 135,148 | 115,228
Year five | 106,319 | 81,889
More than five years | 361,297 | 318,735
Revolving | 110,593 | 108,230
Revolving-Term | 1,228 | 1,179
Total | 1,141,236 | 1,135,693
Commercial | Pass | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 92,158 | 385,347
Year two | 367,329 | 316,003
Year three | 333,477 | 412,191
Year four | 423,653 | 314,303
Year five | 308,371 | 213,019
More than five years | 878,459 | 698,992
Revolving | 34,981 | 35,448
Revolving-Term | 0 | 0
Total | 2,438,428 | 2,375,303
Commercial | Pass | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 42,350 | 437,483
Year two | 369,064 | 126,371
Year three | 106,684 | 115,359
Year four | 94,211 | 83,030
Year five | 75,757 | 37,176
More than five years | 157,096 | 132,182
Revolving | 569,064 | 536,554
Revolving-Term | 0 | 0
Total | 1,414,226 | 1,468,155
Commercial | Pass | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 24,551 | 142,321
Year two | 161,638 | 108,405
Year three | 70,185 | 111,512
Year four | 73,539 | 16,838
Year five | 4,984 | 989
More than five years | 4,281 | 3,539
Revolving | 31,026 | 30,036
Revolving-Term | 0 | 0
Total | 370,204 | 413,640
Commercial | Pass | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 66,205 | 257,264
Year two | 255,051 | 107,791
Year three | 104,999 | 141,411
Year four | 129,574 | 110,586
Year five | 100,316 | 79,187
More than five years | 336,209 | 293,215
Revolving | 109,505 | 107,093
Revolving-Term | 505 | 443
Total | 1,102,364 | 1,096,990
Commercial | Special mention | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 304 | 37,786
Year four | 25,293 | 6,401
Year five | 2,634 | 40,445
More than five years | 100,061 | 75,938
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 128,292 | 160,570
Commercial | Special mention | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 46
Year two | 44 | 0
Year three | 816 | 3,060
Year four | 4,012 | 2,546
Year five | 2,366 | 72
More than five years | 1,137 | 832
Revolving | 9,862 | 8,887
Revolving-Term | 0 | 0
Total | 18,237 | 15,443
Commercial | Special mention | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 3,578 | 0
Year five | 0 | 0
More than five years | 4,423 | 4,458
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 8,001 | 4,458
Commercial | Special mention | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 104
Year two | 98 | 151
Year three | 193 | 1,986
Year four | 2,926 | 1,365
Year five | 2,853 | 1,057
More than five years | 5,959 | 5,929
Revolving | 161 | 160
Revolving-Term | 110 | 111
Total | 12,300 | 10,863
Commercial | Substandard | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 1,356
Year three | 1,343 | 18,743
Year four | 13,865 | 14,039
Year five | 17,707 | 12,555
More than five years | 104,659 | 106,461
Revolving | 1,500 | 1,500
Revolving-Term | 0 | 0
Total | 139,074 | 154,654
Commercial | Substandard | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 14,221
Year four | 10,654 | 1,336
Year five | 1,288 | 4,174
More than five years | 4,072 | 3,456
Revolving | 5,523 | 4,961
Revolving-Term | 0 | 0
Total | 21,537 | 28,148
Commercial | Substandard | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 2,157
Year three | 2,157 | 2,020
Year four | 480 | 0
Year five | 4 | 0
More than five years | 2,391 | 2,480
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 5,032 | 6,657
Commercial | Substandard | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 41
Year two | 2 | 106
Year three | 103 | 1,579
Year four | 2,648 | 3,277
Year five | 3,150 | 1,645
More than five years | 19,129 | 19,591
Revolving | 927 | 977
Revolving-Term | 613 | 625
Total | 26,572 | 27,841
Commercial | Doubtful | Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 5 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 5 | 0
Commercial | Doubtful | Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 1,777
Year four | 4,506 | 0
Year five | 0 | 0
More than five years | 0 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 4,506 | 1,777
Commercial | Doubtful | Commercial construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 0 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 0 | 0
Commercial | Doubtful | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 0 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 0 | 0
Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 1,632,048 | 1,593,406
Consumer | Business banking |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total |  | 357,900
Consumer | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 56,284 | 137,465
Year two | 141,486 | 100,995
Year three | 97,071 | 92,165
Year four | 85,206 | 50,156
Year five | 36,916 | 40,384
More than five years | 235,623 | 238,462
Revolving | 483,849 | 443,406
Revolving-Term | 26,422 | 24,552
Total | 1,162,857 | 1,127,585
Consumer | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 6,035 | 20,059
Year two | 15,522 | 9,448
Year three | 8,176 | 7,261
Year four | 5,948 | 3,093
Year five | 2,452 | 1,021
More than five years | 1,351 | 6,444
Revolving | 71,494 | 57,903
Revolving-Term | 1,298 | 2,677
Total | 112,276 | 107,906
Consumer | Pass | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 56,244 | 137,465
Year two | 141,404 | 100,995
Year three | 96,932 | 91,981
Year four | 84,920 | 48,531
Year five | 35,181 | 39,029
More than five years | 223,298 | 231,861
Revolving | 482,845 | 442,530
Revolving-Term | 23,510 | 23,391
Total | 1,144,334 | 1,115,783
Consumer | Pass | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 6,035 | 19,976
Year two | 15,522 | 9,396
Year three | 8,176 | 7,120
Year four | 5,931 | 2,878
Year five | 2,448 | 613
More than five years | 1,349 | 2,037
Revolving | 71,494 | 57,702
Revolving-Term | 1,273 | 1,130
Total | 112,228 | 100,852
Consumer | Special mention | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 923 | 937
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 923 | 937
Consumer | Special mention | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 0 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 0 | 0
Consumer | Substandard | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 40 | 0
Year two | 82 | 0
Year three | 139 | 184
Year four | 286 | 1,625
Year five | 1,735 | 1,355
More than five years | 11,402 | 5,664
Revolving | 1,004 | 876
Revolving-Term | 2,912 | 1,161
Total | 17,600 | 10,865
Consumer | Substandard | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 83
Year two | 0 | 52
Year three | 0 | 141
Year four | 17 | 215
Year five | 4 | 408
More than five years | 2 | 4,407
Revolving | 0 | 201
Revolving-Term | 25 | 1,547
Total | 48 | 7,054
Consumer | Doubtful | Consumer real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 0 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | 0 | 0
Consumer | Doubtful | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Year two | 0 | 0
Year three | 0 | 0
Year four | 0 | 0
Year five | 0 | 0
More than five years | 0 | 0
Revolving | 0 | 0
Revolving-Term | 0 | 0
Total | $ 0 | $ 0

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