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LOAN COMMITMENTS AND OTHER RELATED ACTIVITIES - Contractual Amount of Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
LIHTC Investments |  |
Other Commitments [Line Items] |  |
Unfunded commitment | $ 14,900 |
Small Business Investment Companies |  |
Other Commitments [Line Items] |  |
Unfunded commitment | 9,400 |
Other Investments |  |
Other Commitments [Line Items] |  |
Unfunded commitment | 7,900 |
Commitments to extend credit |  |
Other Commitments [Line Items] |  |
Fixed Rate | 48,805 | $ 37,107
Variable Rate | 185,478 | 136,921
Unused lines of credit |  |
Other Commitments [Line Items] |  |
Fixed Rate | 4,454 | 6,894
Variable Rate | 1,995,891 | 1,699,933
Letters of credit |  |
Other Commitments [Line Items] |  |
Fixed Rate | 2,825 | 2,553
Variable Rate | $ 7,299 | $ 5,617

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