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Loans and Leases and the Allowance for Credit Losses - Schedule of Amortized Cost Basis of Loans and Leases by Credit Quality Indicator, Loan Class, and Year of Origination (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | $ 2,785,941 | $ 3,669,902
2020 | 2,832,060 | 1,701,148
2019 | 1,198,735 | 1,078,600
2018 | 751,953 | 879,110
2017 | 587,413 | 932,627
Prior | 1,839,710 | 1,545,761
Revolving Loans | 2,039,657 | 2,091,726
Revolving Loans Converted to Term Loans | 37,281 | 41,146
Total Loans and Leases | 12,072,750 | 11,940,020
Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 1,304,099 | 2,078,659
2020 | 1,436,940 | 764,275
2019 | 532,943 | 531,323
2018 | 388,910 | 315,087
2017 | 237,316 | 343,502
Prior | 719,421 | 568,609
Revolving Loans | 371,713 | 498,207
Revolving Loans Converted to Term Loans | 682 | 1,024
Total Loans and Leases | 4,992,024 | 5,100,686
Commercial | Commercial and Industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 337,699 | 470,690
2020 | 376,530 | 150,800
2019 | 91,563 | 151,734
2018 | 82,576 | 50,162
2017 | 32,521 | 52,483
Prior | 107,650 | 87,530
Revolving Loans | 296,225 | 393,187
Revolving Loans Converted to Term Loans | 682 | 1,024
Total Loans and Leases | 1,325,446 | 1,357,610
Commercial | Commercial and Industrial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 335,503 | 426,780
2020 | 341,306 | 149,024
2019 | 91,475 | 149,468
2018 | 80,521 | 49,385
2017 | 31,948 | 52,354
Prior | 89,088 | 68,269
Revolving Loans | 257,097 | 342,339
Revolving Loans Converted to Term Loans | 589 | 847
Total Loans and Leases | 1,227,527 | 1,238,466
Commercial | Commercial and Industrial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 2,008 | 11,702
2020 | 33,200 | 42
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 110
Prior | 153 | 95
Revolving Loans | 25,343 | 32,319
Revolving Loans Converted to Term Loans | 26 | 52
Total Loans and Leases | 60,730 | 44,320
Commercial | Commercial and Industrial | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 188 | 32,208
2020 | 2,024 | 1,734
2019 | 88 | 2,266
2018 | 2,055 | 777
2017 | 573 | 19
Prior | 18,409 | 19,166
Revolving Loans | 13,785 | 18,529
Revolving Loans Converted to Term Loans | 67 | 125
Total Loans and Leases | 37,189 | 74,824
Commercial | PPP |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 196,837 | 517,683
2020 | 71,643 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 268,480 | 517,683
Commercial | PPP | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 196,837 | 517,683
2020 | 71,643 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 268,480 | 517,683
Commercial | Commercial Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 649,163 | 963,839
2020 | 854,756 | 487,545
2019 | 363,141 | 353,437
2018 | 294,693 | 252,548
2017 | 201,315 | 281,267
Prior | 570,240 | 439,324
Revolving Loans | 61,212 | 76,869
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 2,994,520 | 2,854,829
Commercial | Commercial Mortgage | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 608,445 | 847,676
2020 | 774,572 | 458,472
2019 | 362,497 | 350,363
2018 | 264,407 | 245,157
2017 | 196,531 | 267,860
Prior | 554,832 | 425,157
Revolving Loans | 61,212 | 76,869
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 2,822,496 | 2,671,554
Commercial | Commercial Mortgage | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 39,129 | 66,523
2020 | 69,618 | 28,418
2019 | 0 | 291
2018 | 30,286 | 7,117
2017 | 0 | 8,665
Prior | 6,122 | 5,035
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 145,155 | 116,049
Commercial | Commercial Mortgage | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 1,589 | 49,640
2020 | 10,566 | 655
2019 | 644 | 2,783
2018 | 0 | 274
2017 | 4,784 | 4,742
Prior | 9,286 | 9,132
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 26,869 | 67,226
Commercial | Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 101,403 | 106,508
2020 | 118,076 | 105,731
2019 | 61,403 | 11,275
2018 | 0 | 8,133
2017 | 894 | 0
Prior | 0 | 0
Revolving Loans | 14,276 | 28,151
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 296,052 | 259,798
Commercial | Construction | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 101,403 | 106,508
2020 | 118,076 | 105,731
2019 | 61,403 | 11,275
2018 | 0 | 8,133
2017 | 894 | 0
Prior | 0 | 0
Revolving Loans | 14,276 | 28,151
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 296,052 | 259,798
Commercial | Lease Financing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 18,997 | 19,939
2020 | 15,935 | 20,199
2019 | 16,836 | 14,877
2018 | 11,641 | 4,244
2017 | 2,586 | 9,752
Prior | 41,531 | 41,755
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 107,526 | 110,766
Commercial | Lease Financing | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 18,997 | 19,906
2020 | 15,935 | 20,132
2019 | 16,836 | 13,785
2018 | 10,749 | 4,202
2017 | 2,586 | 9,657
Prior | 41,531 | 41,755
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 106,634 | 109,437
Commercial | Lease Financing | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 0 |
2020 | 0 |
2019 | 0 |
2018 | 892 |
2017 | 0 |
Prior | 0 |
Revolving Loans | 0 |
Revolving Loans Converted to Term Loans | 0 |
Total Loans and Leases | 892 |
Commercial | Lease Financing | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 |  | 33
2020 |  | 67
2019 |  | 1,092
2018 |  | 42
2017 |  | 95
Prior |  | 0
Revolving Loans |  | 0
Revolving Loans Converted to Term Loans |  | 0
Total Loans and Leases |  | 1,329
Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 1,481,842 | 1,591,243
2020 | 1,395,120 | 936,873
2019 | 665,792 | 547,277
2018 | 363,043 | 564,023
2017 | 350,097 | 589,125
Prior | 1,120,289 | 977,152
Revolving Loans | 1,667,944 | 1,593,519
Revolving Loans Converted to Term Loans | 36,599 | 40,122
Total Loans and Leases | 7,080,726 | 6,839,334
Consumer | Residential Mortgage |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 1,120,627 | 1,300,831
2020 | 1,173,498 | 576,746
2019 | 403,698 | 295,522
2018 | 201,297 | 455,197
2017 | 287,593 | 545,798
Prior | 1,085,827 | 956,419
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 4,272,540 | 4,130,513
Consumer | Residential Mortgage | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 1,120,627 | 1,300,831
2020 | 1,173,498 | 576,452
2019 | 403,404 | 295,522
2018 | 201,297 | 454,165
2017 | 285,312 | 545,798
Prior | 1,083,359 | 954,120
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 4,267,497 | 4,126,888
Consumer | Residential Mortgage | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 0 | 0
2020 | 0 | 294
2019 | 294 | 0
2018 | 0 | 1,032
2017 | 2,281 | 0
Prior | 2,468 | 2,299
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 5,043 | 3,625
Consumer | Home Equity Loan |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 3,395 | 4,537
Revolving Loans | 1,641,723 | 1,561,364
Revolving Loans Converted to Term Loans | 35,111 | 38,637
Total Loans and Leases | 1,680,229 | 1,604,538
Consumer | Home Equity Loan | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 3,282 | 4,449
Revolving Loans | 1,636,803 | 1,556,671
Revolving Loans Converted to Term Loans | 34,308 | 37,559
Total Loans and Leases | 1,674,393 | 1,598,679
Consumer | Home Equity Loan | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 113 | 88
Revolving Loans | 4,920 | 4,693
Revolving Loans Converted to Term Loans | 803 | 1,078
Total Loans and Leases | 5,836 | 5,859
Consumer | Automobile |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 233,427 | 219,319
2020 | 166,735 | 214,159
2019 | 155,992 | 158,387
2018 | 105,988 | 68,889
2017 | 40,984 | 34,060
Prior | 24,108 | 13,986
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 727,234 | 708,800
Consumer | Automobile | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 233,401 | 219,218
2020 | 166,682 | 213,914
2019 | 155,905 | 158,216
2018 | 105,933 | 68,776
2017 | 40,967 | 33,899
Prior | 23,952 | 13,850
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 726,840 | 707,873
Consumer | Automobile | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 26 | 101
2020 | 53 | 245
2019 | 87 | 171
2018 | 55 | 113
2017 | 17 | 161
Prior | 156 | 136
Revolving Loans | 0 | 0
Revolving Loans Converted to Term Loans | 0 | 0
Total Loans and Leases | 394 | 927
Consumer | Other Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 127,788 | 71,093
2020 | 54,887 | 145,968
2019 | 106,102 | 93,368
2018 | 55,758 | 39,937
2017 | 21,520 | 9,267
Prior | 6,959 | 2,210
Revolving Loans | 26,221 | 32,155
Revolving Loans Converted to Term Loans | 1,488 | 1,485
Total Loans and Leases | 400,723 | 395,483
Consumer | Other Loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 127,788 | 71,042
2020 | 54,794 | 145,549
2019 | 105,858 | 92,993
2018 | 55,663 | 39,770
2017 | 21,442 | 9,225
Prior | 6,949 | 2,189
Revolving Loans | 26,151 | 32,070
Revolving Loans Converted to Term Loans | 1,485 | 1,485
Total Loans and Leases | 400,130 | 394,323
Consumer | Other Loans | Classified |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
YTD March 31, 2021 | 0 | 51
2020 | 93 | 419
2019 | 244 | 375
2018 | 95 | 167
2017 | 78 | 42
Prior | 10 | 21
Revolving Loans | 70 | 85
Revolving Loans Converted to Term Loans | 3 | 0
Total Loans and Leases | $ 593 | $ 1,160

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