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OFF-BALANCE SHEET COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Amortization | $ 197 | $ 189 | $ 395 | $ 378 |
Capital Contributions, Small Business Investment Corporation |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Capital contributions |  |  | 16,400 |  | $ 14,500
Small Business Investment Corporations |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Capital contributions |  |  | 6,100 |  | 8,000
Capital Contributions, Low Income Housing Partnerships |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Capital contributions |  |  | 4,900 |  | 5,300
Low Income Housing Partnerships |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Capital contributions |  |  | $ 1,400 |  | $ 2,100

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