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SECURITIES - Additional Information (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2017 security | Dec. 31, 2022 USD ($) security segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Securities pledged as collateral |  | $ 946,300,000 | $ 814,700,000 |  |
Gain on sale of investments |  | 6,000 | 274,000 | $ 290,000 |
Loss on sale of investments |  | $ 3,000 | 160,000 | 57,000 |
Number of CDO other-than-temporary impaired | security |  | 3 |  |  |
Number of CDO called | security | 1 |  |  |  |
Cumulative OTTI charges |  | $ 2,974,000 | 2,974,000 | 2,974,000 | $ 2,974,000
Number of investment securities segregation for impairment evaluation | segment |  | 2 |  |  |
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale |  | $ 179,597,000 | $ 262,209,000 | $ 260,631,000 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions |  | 895 |  |  |
Other Than Temporarily Impaired Cdo |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Contractual balance |  | $ 3,700,000 |  |  |
Reduced balance |  | 3,000,000.0 |  |  |
Interest payment received |  | 750,000 |  |  |
Cumulative OTTI charges |  | 3,000,000.0 |  |  |
Other comprehensive income net |  | $ 3,000,000.0 |  |  |

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