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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Troubled Debt Restructurings Additional Information (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) loan loans | Dec. 31, 2022 USD ($) loan
Financing Receivable, Past Due [Line Items] |  |
Number of loans classified as TDRs | loan | 7 | 15
Aggregate balance | $ 3,500 | $ 16,100
Loans receivable | 7,651 |
Accruing TDRs | 100 | 2,700
Non-accruing TDRs | 3,400 | $ 13,400
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 3,900 |
Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | 4,564 |
Modified loans paid down | $ 7,800 |
Modified loans paid down, number of loans | loans | 3 |
Charge offs on modified loans | $ 1,200 |
Commercial | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans receivable | $ 4,564 |

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