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LOANS, ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Nov. 12, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | $ (34,782) |  | $ (2,652) |  | $ (4,944) |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 1,335 |  | 1,649 |  | 3,729 |  |
Contractual cash flows not expected to be collected | $ 16,540 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 23,250 |  | 6,500 |  | 18,205 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 142,222 | [1] | 152,419 | [1] | 146,922 | [1] | $ 113,392
Commercial And Industrial [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | (23,564) |  | 0 |  | (3,474) |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 145 |  | 49 |  | 2,686 |  |
Contractual cash flows not expected to be collected | 166 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 15,103 |  | 13,108 |  | (6,062) |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 19,243 | [1] | 27,559 | [1] | 14,402 | [1] | 21,086
Commercial Real Estate [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | (7,855) |  | (62) |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 |  | 333 |  | 57 |  |
Contractual cash flows not expected to be collected | 14,397 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 4,204 |  | (5,958) |  | 24,023 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 74,148 | [1] | 77,799 | [1] | 83,486 | [1] | 45,009
Construction Loans [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 |  | 0 |  | 0 |  |
Contractual cash flows not expected to be collected | 1,019 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | (3,079) |  | (1,554) |  | 5,900 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 7,683 | [1] | 10,762 | [1] | 12,316 | [1] | 5,397
Small Business [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | (484) |  | (196) |  | (219) |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 92 |  | 149 |  | 98 |  |
Contractual cash flows not expected to be collected | 0 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 1,521 |  | (627) |  | (1,466) |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 3,963 | [1] | 2,834 | [1] | 3,508 | [1] | 5,095
Residential Real Estate [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | 0 |  | 0 |  | 0 |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 0 |  | 0 |  | 1 |  |
Contractual cash flows not expected to be collected | 429 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 2,664 |  | 6,489 |  | (221) |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 23,637 | [1] | 20,973 | [1] | 14,484 | [1] | 14,275
Home Equity Line of Credit [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | (47) |  | (122) |  | (69) |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 62 |  | 121 |  | 249 |  |
Contractual cash flows not expected to be collected | 163 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 1,278 |  | (6,481) |  | (4,417) |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | 12,797 | [1] | 11,504 | [1] | 17,986 | [1] | 22,060
Consumer Portfolio Segment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  | (2,832) |  | (2,272) |  | (1,182) |  |
Financing Receivable, Allowance for Credit Loss, Recovery |  | 1,036 |  | 997 |  | 638 |  |
Contractual cash flows not expected to be collected | $ 366 |  |  |  |  |  |  |
Financing Receivable, Credit Loss, Expense (Reversal) |  | 1,559 |  | 1,523 |  | 448 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  | $ 751 | [1] | $ 988 | [1] | $ 740 | [1] | $ 470
[1] | Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $60.2 million, $50.8 million, and $43.7 million at December 31, 2023, 2022, and 2021, respectively.

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