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Allowance for Credit Losses and Credit Quality of Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Minimum number of days past due for loans to be considered nonperforming | 90 days |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | $ 697,245 | $ 1,927,429
2020/2019 | 1,722,430 | 1,312,819
2019/2018 | 1,237,919 | 949,810
2018/2017 | 874,540 | 750,728
2017/2016 | 681,635 | 515,688
Prior | 1,646,957 | 1,262,066
Revolving Loans Amortized Cost Basis | 746,562 | 749,657
Revolving Loans Converted to Term | 26,171 | 30,688
Total | 7,633,459 | 7,498,885
C&I [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 113,286 | 352,323
2020/2019 | 321,528 | 195,227
2019/2018 | 171,349 | 106,502
2018/2017 | 95,289 | 50,153
2017/2016 | 41,852 | 35,040
Prior | 63,953 | 39,712
Revolving Loans Amortized Cost Basis | 334,807 | 346,233
Revolving Loans Converted to Term | 10,676 | 426
Total | 1,152,740 | 1,125,616
C&I [Member] | Pass [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 113,273 | 331,921
2020/2019 | 305,135 | 182,329
2019/2018 | 157,578 | 91,230
2018/2017 | 82,451 | 41,856
2017/2016 | 34,635 | 32,625
Prior | 55,540 | 32,609
Revolving Loans Amortized Cost Basis | 310,850 | 322,674
Revolving Loans Converted to Term | 10,149 | 412
Total | 1,069,611 | 1,035,656
C&I [Member] | Special Mention [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 13 | 20,064
2020/2019 | 15,988 | 6,534
2019/2018 | 6,099 | 5,053
2018/2017 | 4,576 | 4,702
2017/2016 | 4,149 | 1,624
Prior | 4,001 | 2,830
Revolving Loans Amortized Cost Basis | 17,420 | 13,614
Revolving Loans Converted to Term | 0 | 0
Total | 52,246 | 54,421
C&I [Member] | Substandard [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 338
2020/2019 | 405 | 6,364
2019/2018 | 7,672 | 10,219
2018/2017 | 8,262 | 3,388
2017/2016 | 2,865 | 791
Prior | 4,411 | 4,272
Revolving Loans Amortized Cost Basis | 6,537 | 9,945
Revolving Loans Converted to Term | 527 | 14
Total | 30,679 | 35,331
C&I [Member] | Doubtful [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 0
2020/2019 | 0 | 0
2019/2018 | 0 | 0
2018/2017 | 0 | 207
2017/2016 | 203 | 0
Prior | 1 | 1
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 204 | 208
CRE [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 132,195 | 472,506
2020/2019 | 456,029 | 412,425
2019/2018 | 419,889 | 296,712
2018/2017 | 285,729 | 342,604
2017/2016 | 321,513 | 255,045
Prior | 696,059 | 496,867
Revolving Loans Amortized Cost Basis | 136,940 | 115,926
Revolving Loans Converted to Term | 2,860 | 20,200
Total | 2,451,214 | 2,412,285
CRE [Member] | Pass [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 132,195 | 469,919
2020/2019 | 452,951 | 361,187
2019/2018 | 356,643 | 256,154
2018/2017 | 260,570 | 271,874
2017/2016 | 253,673 | 212,197
Prior | 535,309 | 383,690
Revolving Loans Amortized Cost Basis | 134,394 | 113,128
Revolving Loans Converted to Term | 2,860 | 4,034
Total | 2,128,595 | 2,072,183
CRE [Member] | Special Mention [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 2,051
2020/2019 | 2,544 | 44,034
2019/2018 | 41,189 | 22,260
2018/2017 | 7,508 | 55,039
2017/2016 | 54,121 | 36,830
Prior | 88,045 | 43,537
Revolving Loans Amortized Cost Basis | 1,293 | 1,297
Revolving Loans Converted to Term | 0 | 11,524
Total | 194,700 | 216,572
CRE [Member] | Substandard [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 536
2020/2019 | 534 | 5,307
2019/2018 | 20,160 | 18,298
2018/2017 | 17,651 | 15,691
2017/2016 | 13,719 | 6,018
Prior | 65,288 | 62,168
Revolving Loans Amortized Cost Basis | 1,253 | 1,501
Revolving Loans Converted to Term | 0 | 4,642
Total | 118,605 | 114,161
CRE [Member] | Doubtful [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 0
2020/2019 | 0 | 1,897
2019/2018 | 1,897 | 0
2018/2017 | 0 | 0
2017/2016 | 0 | 0
Prior | 7,417 | 7,472
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 9,314 | 9,369
PPP [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 218,938 | 430,810
2020/2019 | 317,556 | 0
2019/2018 | 0 | 0
2018/2017 | 0 | 0
2017/2016 | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 536,494 | 430,810
PPP [Member] | Pass [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 218,938 | 430,810
2020/2019 | 317,556 | 0
2019/2018 | 0 | 0
2018/2017 | 0 | 0
2017/2016 | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 536,494 | 430,810
Auto [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 98,676 | 198,240
2020/2019 | 183,418 | 315,174
2019/2018 | 280,673 | 202,985
2018/2017 | 173,991 | 116,502
2017/2016 | 94,748 | 45,932
Prior | 41,451 | 13,250
Revolving Loans Amortized Cost Basis | 21 | 22
Revolving Loans Converted to Term | 0 | 0
Total | 872,978 | 892,105
Auto [Member] | Performing [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 98,666 | 197,881
2020/2019 | 183,147 | 314,034
2019/2018 | 280,077 | 201,850
2018/2017 | 173,240 | 115,977
2017/2016 | 94,084 | 45,495
Prior | 41,451 | 13,250
Revolving Loans Amortized Cost Basis | 21 | 22
Revolving Loans Converted to Term | 0 | 0
Total | 870,686 | 888,509
Auto [Member] | Nonperforming [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 10 | 359
2020/2019 | 271 | 1,140
2019/2018 | 596 | 1,135
2018/2017 | 751 | 525
2017/2016 | 664 | 437
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 0 | 0
Total | 2,292 | 3,596
Other Consumer [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 67,050 | 234,967
2020/2019 | 209,157 | 178,829
2019/2018 | 160,363 | 127,856
2018/2017 | 112,978 | 55,941
2017/2016 | 48,159 | 14,345
Prior | 26,656 | 17,547
Revolving Loans Amortized Cost Basis | 14,933 | 18,598
Revolving Loans Converted to Term | 41 | 71
Total | 639,337 | 648,154
Other Consumer [Member] | Performing [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 67,050 | 234,628
2020/2019 | 208,960 | 178,411
2019/2018 | 159,896 | 127,549
2018/2017 | 112,634 | 55,676
2017/2016 | 47,920 | 14,255
Prior | 26,535 | 17,414
Revolving Loans Amortized Cost Basis | 14,923 | 18,588
Revolving Loans Converted to Term | 24 | 71
Total | 637,942 | 646,592
Other Consumer [Member] | Nonperforming [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 339
2020/2019 | 197 | 418
2019/2018 | 467 | 307
2018/2017 | 344 | 265
2017/2016 | 239 | 90
Prior | 121 | 133
Revolving Loans Amortized Cost Basis | 10 | 10
Revolving Loans Converted to Term | 17 | 0
Total | 1,395 | 1,562
Residential [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 67,100 | 238,583
2020/2019 | 234,742 | 211,164
2019/2018 | 205,645 | 215,755
2018/2017 | 206,553 | 185,528
2017/2016 | 175,363 | 165,326
Prior | 818,838 | 694,690
Revolving Loans Amortized Cost Basis | 259,861 | 268,878
Revolving Loans Converted to Term | 12,594 | 9,991
Total | 1,980,696 | 1,989,915
Residential [Member] | Performing [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 67,100 | 237,338
2020/2019 | 233,363 | 210,505
2019/2018 | 204,995 | 213,437
2018/2017 | 204,255 | 182,993
2017/2016 | 173,135 | 164,424
Prior | 808,168 | 684,495
Revolving Loans Amortized Cost Basis | 259,861 | 268,878
Revolving Loans Converted to Term | 12,532 | 9,991
Total | 1,963,409 | 1,972,061
Residential [Member] | Nonperforming [Member] |  |
Credit Quality by Loan Class [Abstract] |  |
2021/2020 | 0 | 1,245
2020/2019 | 1,379 | 659
2019/2018 | 650 | 2,318
2018/2017 | 2,298 | 2,535
2017/2016 | 2,228 | 902
Prior | 10,670 | 10,195
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term | 62 | 0
Total | $ 17,287 | $ 17,854

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