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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Branch Acquisition (Details) $ in Thousands | Feb. 10, 2023 USD ($) branch | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 0 | $ 27,900
California | Three Branches Purchase |  |  |
Business Acquisition [Line Items] |  |  |
Number of branches purchased | branch | 3 |  |
Deposit liabilities assumed | $ 376,000 |  |
Acquired receivables | 21,000 |  |
Goodwill | 12,000 |  |
Core deposit intangibles acquired | $ 11,000 |  |

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