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INVESTMENT SECURITIES - Additional Information (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Available-for-sale Securities | $ 434,600,000 |  |  |  | $ 453,700,000 |  |  |  | $ 434,600,000 | $ 453,700,000 |
Held to maturity security carrying value | 107,755,000 |  |  |  | 102,291,000 |  |  |  | 107,755,000 | 102,291,000 |
Other than temporary impairment charges |  |  |  |  |  |  |  |  |  |  | $ 0
Investment with fair value classified as equity security | 13,166,000 |  |  |  | 12,985,000 |  |  |  | 13,166,000 | 12,985,000 |
Fair value adjustment for CRA equity security | 585,000 | $ (404,000) | $ (209,000) | $ 209,000 | 28,000 | $ (571,000) | $ (475,000) | $ (682,000) | 181,000 | (1,700,000) | (432,000)
CRA Investment Fund [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment with fair value classified as equity security | $ 13,200,000 |  |  |  | $ 13,000,000.0 |  |  |  | 13,200,000 | 13,000,000.0 |
Fair value adjustment for CRA equity security |  |  |  |  |  |  |  |  | $ 181,000 | $ (1,700,000) | $ (432,000)

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