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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Amortized Cost Basis of Collateral-dependent Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for Credit Losses Allocation | $ 28,543 | $ 30,920 | $ 31,140 | $ 31,974
Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | 14,744 |  |
Allowance for Credit Losses Allocation |  | 217 |  |
Real Estate | Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | 14,527 |  |
Non-RE | Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | 217 |  |
Commercial and industrial |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for Credit Losses Allocation | 2,929 | 3,719 | 3,823 | 4,382
Commercial and industrial | Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | 217 |  |
Allowance for Credit Losses Allocation |  | 217 |  |
Commercial and industrial | Non-RE | Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | 217 |  |
Commercial real estate |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Allowance for Credit Losses Allocation | $ 12,173 | 12,257 | $ 13,093 | $ 12,658
Commercial real estate | Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | 14,527 |  |
Commercial real estate | Real Estate | Collateral Dependent Loans |  |  |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |  |  |
Amortized cost |  | $ 14,527 |  |

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