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LOANS - Amount of Business Lending Loans by Credit Quality Categories (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Business Lending [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | $ 345,833 |
2020 | 454,489 | $ 881,201
2019 | 371,746 | 391,969
2018 | 372,296 | 373,807
2017 | 238,460 | 263,820
2016 |  | 275,730
Prior | 818,214 | 660,921
Revolving Loans Amortized Cost Basis | 585,449 | 592,629
Total | 3,186,487 | 3,440,077
Business Lending [Member] | Pass [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 343,472 |
2020 | 439,365 | 860,178
2019 | 338,583 | 351,350
2018 | 284,580 | 312,087
2017 | 189,477 | 217,138
2016 |  | 231,453
Prior | 661,491 | 543,999
Revolving Loans Amortized Cost Basis | 507,921 | 483,018
Total | 2,764,889 | 2,999,223
Business Lending [Member] | Special Mention [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 2,001 |
2020 | 12,961 | 14,687
2019 | 12,084 | 36,041
2018 | 36,635 | 28,410
2017 | 21,586 | 21,875
2016 |  | 29,386
Prior | 72,145 | 51,657
Revolving Loans Amortized Cost Basis | 34,484 | 52,732
Total | 191,896 | 234,788
Business Lending [Member] | Classified [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 360 |
2020 | 2,163 | 6,336
2019 | 21,063 | 4,560
2018 | 49,150 | 30,422
2017 | 27,397 | 24,807
2016 |  | 14,891
Prior | 84,543 | 65,157
Revolving Loans Amortized Cost Basis | 42,178 | 56,000
Total | 226,854 | 202,173
Business Lending [Member] | Doubtful [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 0 |
2020 | 0 | 0
2019 | 16 | 18
2018 | 1,931 | 2,888
2017 | 0 | 0
2016 |  | 0
Prior | 35 | 108
Revolving Loans Amortized Cost Basis | 866 | 879
Total | 2,848 | 3,893
Consumer Mortgage [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 275,761 |
2020 | 374,624 | 375,637
2019 | 300,211 | 330,825
2018 | 213,623 | 248,468
2017 | 201,611 | 240,217
2016 |  | 246,256
Prior | 1,021,275 | 942,393
Revolving Loans Amortized Cost Basis | 21,394 | 17,703
Total | 2,408,499 | 2,401,499
Consumer Mortgage [Member] | FICO AB [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 217,537 |
2020 | 245,448 | 260,588
2019 | 204,560 | 227,027
2018 | 139,517 | 166,913
2017 | 136,508 | 164,051
2016 |  | 161,256
Prior | 663,378 | 617,685
Revolving Loans Amortized Cost Basis | 0 | 321
Total | 1,606,948 | 1,597,841
Consumer Mortgage [Member] | FICO AB [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 217,537 |
2020 | 245,277 | 260,588
2019 | 204,560 | 227,027
2018 | 139,256 | 166,638
2017 | 135,992 | 163,653
2016 |  | 160,911
Prior | 660,613 | 614,976
Revolving Loans Amortized Cost Basis | 0 | 321
Total | 1,603,235 | 1,594,114
Consumer Mortgage [Member] | FICO AB [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 0 |
2020 | 171 | 0
2019 | 0 | 0
2018 | 261 | 275
2017 | 516 | 398
2016 |  | 345
Prior | 2,765 | 2,709
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 3,713 | 3,727
Consumer Mortgage [Member] | FICO CDE [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 58,224 |
2020 | 129,176 | 115,049
2019 | 95,651 | 103,798
2018 | 74,106 | 81,555
2017 | 65,103 | 76,166
2016 |  | 85,000
Prior | 357,897 | 324,708
Revolving Loans Amortized Cost Basis | 21,394 | 17,382
Total | 801,551 | 803,658
Consumer Mortgage [Member] | FICO CDE [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 58,224 |
2020 | 128,942 | 115,049
2019 | 94,750 | 102,788
2018 | 73,362 | 80,973
2017 | 64,401 | 75,289
2016 |  | 83,214
Prior | 346,907 | 314,668
Revolving Loans Amortized Cost Basis | 21,394 | 17,382
Total | 787,980 | 789,363
Consumer Mortgage [Member] | FICO CDE [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 0 |
2020 | 234 | 0
2019 | 901 | 1,010
2018 | 744 | 582
2017 | 702 | 877
2016 |  | 1,786
Prior | 10,990 | 10,040
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 13,571 | 14,295
Consumer Indirect [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 317,236 |
2020 | 255,949 | 303,522
2019 | 240,566 | 305,953
2018 | 149,003 | 202,455
2017 | 59,328 | 86,514
2016 |  | 61,465
Prior | 87,422 | 61,976
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 1,109,504 | 1,021,885
Consumer Indirect [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 317,236 |
2020 | 255,939 | 303,471
2019 | 240,528 | 305,901
2018 | 148,990 | 202,373
2017 | 59,328 | 86,497
2016 |  | 61,449
Prior | 87,410 | 61,975
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 1,109,431 | 1,021,666
Consumer Indirect [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 0 |
2020 | 10 | 51
2019 | 38 | 52
2018 | 13 | 82
2017 | 0 | 17
2016 |  | 16
Prior | 12 | 1
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 73 | 219
Consumer Direct [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 37,644 |
2020 | 37,762 | 49,182
2019 | 34,503 | 47,011
2018 | 18,949 | 27,874
2017 | 7,557 | 12,331
2016 |  | 5,232
Prior | 6,115 | 4,149
Revolving Loans Amortized Cost Basis | 6,010 | 6,878
Total | 148,540 | 152,657
Consumer Direct [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 37,644 |
2020 | 37,762 | 49,181
2019 | 34,503 | 46,992
2018 | 18,947 | 27,872
2017 | 7,557 | 12,326
2016 |  | 5,232
Prior | 6,100 | 4,146
Revolving Loans Amortized Cost Basis | 6,010 | 6,878
Total | 148,523 | 152,627
Consumer Direct [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 0 |
2020 | 0 | 1
2019 | 0 | 19
2018 | 2 | 2
2017 | 0 | 5
2016 |  | 0
Prior | 15 | 3
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 17 | 30
Home Equity [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 33,503 |
2020 | 47,404 | 48,145
2019 | 42,454 | 48,804
2018 | 23,557 | 28,147
2017 | 19,303 | 23,628
2016 |  | 18,011
Prior | 43,772 | 36,390
Revolving Loans Amortized Cost Basis | 181,124 | 196,709
Total | 391,117 | 399,834
Home Equity [Member] | Performing [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 33,503 |
2020 | 47,348 | 48,145
2019 | 42,432 | 48,780
2018 | 23,450 | 28,074
2017 | 19,224 | 23,524
2016 |  | 17,828
Prior | 43,050 | 35,900
Revolving Loans Amortized Cost Basis | 179,391 | 194,773
Total | 388,398 | 397,024
Home Equity [Member] | Nonperforming Financial Instruments [Member] |  |
Term Loans Amortized Cost Basis by Origination Year |  |
2021 | 0 |
2020 | 56 | 0
2019 | 22 | 24
2018 | 107 | 73
2017 | 79 | 104
2016 |  | 183
Prior | 722 | 490
Revolving Loans Amortized Cost Basis | 1,733 | 1,936
Total | $ 2,719 | $ 2,810

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