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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Narrative) (Details) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) segment loan | Sep. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans under modified terms | $ 1,019,000 |  | $ 29,419,000 |  |  |  |  |
Troubled Debt Restructurings (TDRs) |  |  |  |  |  | $ 14,190,000 |  |
Total Allowance for credit losses | 125,627,000 | $ 108,009,000 | 125,627,000 | $ 108,009,000 | $ 120,683,000 | 110,768,000 | $ 104,184,000 | $ 99,787,000
Interest income recognized on nonaccrual loans | 0 | 0 | $ 0 | 0 |  |  |  |
Number of loans designated as TLMs currently past due | loan |  |  | 0 |  |  |  |  |
Number of operating segments | segment |  |  | 2 |  |  |  |  |
Commercial Portfolio |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Total Allowance for credit losses | 98,940,000 | $ 83,901,000 | $ 98,940,000 | $ 83,901,000 | $ 92,970,000 | 82,753,000 | $ 77,413,000 | $ 77,902,000
Number of loans with associated charge-offs | loan |  |  | 2 |  |  |  |  |
Troubled Debt Restructurings [Member] |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Troubled Debt Restructurings (TDRs) |  |  |  |  |  | 14,200,000 |  |
Total Allowance for credit losses |  |  |  |  |  | $ 739,000 |  |
Troubled Loan Modifications |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |
Loans under modified terms |  |  | $ 29,400,000 |  |  |  |  |
Total Allowance for credit losses | 155,000 |  | 155,000 |  |  |  |  |
Unfunded commitments on TLM loans | $ 1,500,000 |  | $ 1,500,000 |  |  |  |  |

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