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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Amount of Business Lending Loans by Credit Quality Categories (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Term Loans Amortized Cost Basis by Origination Year |  |
Loans | $ 7,422,253 | $ 7,373,639
Legacy Loan [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
Total past due | 62,050 | 73,495
Loans | 7,422,253 | 7,373,639
Business Lending |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 118,251 |
2021 | 489,952 | 532,141
2020 | 342,932 | 341,665
2019 | 341,931 | 351,064
2018 | 323,765 | 334,790
2017 |  | 230,502
Prior | 891,491 | 705,731
Revolving Loans Amortized Cost Basis | 594,211 | 580,011
Total past due | 3,102,533 | 3,075,904
Business Lending | Pass [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 117,222 |
2021 | 483,382 | 524,302
2020 | 334,060 | 328,885
2019 | 317,223 | 320,638
2018 | 242,680 | 248,175
2017 |  | 186,074
Prior | 742,997 | 584,912
Revolving Loans Amortized Cost Basis | 539,835 | 524,553
Total past due | 2,777,399 | 2,717,539
Business Lending | Special Mention [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 831 |
2021 | 4,763 | 5,969
2020 | 7,168 | 11,013
2019 | 4,149 | 10,111
2018 | 44,310 | 46,318
2017 |  | 22,524
Prior | 68,634 | 57,134
Revolving Loans Amortized Cost Basis | 25,669 | 27,444
Total past due | 155,524 | 180,513
Business Lending | Classified [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 198 |
2021 | 1,807 | 1,870
2020 | 1,704 | 1,767
2019 | 20,559 | 20,315
2018 | 36,775 | 40,235
2017 |  | 21,904
Prior | 79,860 | 63,685
Revolving Loans Amortized Cost Basis | 28,189 | 27,511
Total past due | 169,092 | 177,287
Business Lending | Doubtful [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 0 |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 62
2017 |  | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 518 | 503
Total past due | 518 | 565
Consumer Mortgage |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 142,502 |
2021 | 674,666 | 683,550
2020 | 341,716 | 352,373
2019 | 254,904 | 269,694
2018 | 160,879 | 173,187
2017 |  | 172,187
Prior | 994,749 | 880,095
Revolving Loans Amortized Cost Basis | 23,170 | 25,028
Total past due | 2,592,586 | 2,556,114
Consumer Mortgage | FICO AB [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 105,733 |
2021 | 495,405 | 514,680
2020 | 221,907 | 229,305
2019 | 172,633 | 183,469
2018 | 106,159 | 113,749
2017 |  | 116,852
Prior | 649,001 | 569,365
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 1,750,838 | 1,727,420
Consumer Mortgage | FICO AB [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 105,733 |
2021 | 495,405 | 514,680
2020 | 221,644 | 229,039
2019 | 172,573 | 183,469
2018 | 106,030 | 113,618
2017 |  | 116,417
Prior | 644,931 | 566,129
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 1,746,316 | 1,723,352
Consumer Mortgage | FICO AB [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 0 |
2021 | 0 | 0
2020 | 263 | 266
2019 | 60 | 0
2018 | 129 | 131
2017 |  | 435
Prior | 4,070 | 3,236
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 4,522 | 4,068
Consumer Mortgage | FICO CDE [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 36,769 |
2021 | 179,261 | 168,870
2020 | 119,809 | 123,068
2019 | 82,271 | 86,225
2018 | 54,720 | 59,438
2017 |  | 55,335
Prior | 345,748 | 310,730
Revolving Loans Amortized Cost Basis | 23,170 | 25,028
Total past due | 841,748 | 828,694
Consumer Mortgage | FICO CDE [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 36,769 |
2021 | 178,858 | 168,870
2020 | 119,016 | 122,546
2019 | 81,270 | 85,253
2018 | 53,033 | 57,973
2017 |  | 54,396
Prior | 334,535 | 300,341
Revolving Loans Amortized Cost Basis | 23,170 | 25,028
Total past due | 826,651 | 814,407
Consumer Mortgage | FICO CDE [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 0 |
2021 | 403 | 0
2020 | 793 | 522
2019 | 1,001 | 972
2018 | 1,687 | 1,465
2017 |  | 939
Prior | 11,213 | 10,389
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 15,097 | 14,287
Consumer Indirect |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 110,578 |
2021 | 546,881 | 590,857
2020 | 181,668 | 204,563
2019 | 157,786 | 182,458
2018 | 90,832 | 107,707
2017 |  | 39,402
Prior | 88,628 | 64,762
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 1,176,373 | 1,189,749
Consumer Indirect | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 110,578 |
2021 | 546,880 | 590,857
2020 | 181,655 | 204,529
2019 | 157,786 | 182,458
2018 | 90,813 | 107,683
2017 |  | 39,385
Prior | 88,628 | 64,750
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 1,176,340 | 1,189,662
Consumer Indirect | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 0 |
2021 | 1 | 0
2020 | 13 | 34
2019 | 0 | 0
2018 | 19 | 24
2017 |  | 17
Prior | 0 | 12
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 33 | 87
Consumer Direct |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 20,301 |
2021 | 62,650 | 72,584
2020 | 25,145 | 28,909
2019 | 20,697 | 24,788
2018 | 10,018 | 12,341
2017 |  | 4,396
Prior | 7,534 | 4,575
Revolving Loans Amortized Cost Basis | 6,100 | 6,218
Total past due | 152,445 | 153,811
Consumer Direct | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 20,301 |
2021 | 62,650 | 72,584
2020 | 25,145 | 28,905
2019 | 20,697 | 24,770
2018 | 10,017 | 12,340
2017 |  | 4,396
Prior | 7,534 | 4,575
Revolving Loans Amortized Cost Basis | 6,100 | 6,218
Total past due | 152,444 | 153,788
Consumer Direct | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 0 |
2021 | 0 | 0
2020 | 0 | 4
2019 | 0 | 18
2018 | 1 | 1
2017 |  | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Total past due | 1 | 23
Home Equity |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 14,418 |
2021 | 76,786 | 76,041
2020 | 41,154 | 43,170
2019 | 34,157 | 36,037
2018 | 17,030 | 18,926
2017 |  | 15,265
Prior | 47,177 | 36,419
Revolving Loans Amortized Cost Basis | 167,594 | 172,203
Total past due | 398,316 | 398,061
Home Equity | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 14,418 |
2021 | 76,786 | 76,041
2020 | 41,090 | 43,106
2019 | 34,073 | 35,990
2018 | 16,860 | 18,824
2017 |  | 15,134
Prior | 46,471 | 35,740
Revolving Loans Amortized Cost Basis | 166,040 | 170,422
Total past due | 395,738 | 395,257
Home Equity | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2022 | 0 |
2021 | 0 | 0
2020 | 64 | 64
2019 | 84 | 47
2018 | 170 | 102
2017 |  | 131
Prior | 706 | 679
Revolving Loans Amortized Cost Basis | 1,554 | 1,781
Total past due | $ 2,578 | $ 2,804

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