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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Dec. 31, 2021
ALLOWANCE FOR LOAN LOSSES [Abstract] |  |  |  |  |  |  |  |
Accrued interest receivable on AFS debt securities | $ 433 |  | $ 433 |  |  |  |  |
ACL related to AFS debt securities | 0 |  | 0 |  |  |  |  |
ACL related to HTM debt securities | 2 |  | 2 |  |  | $ 0 |  |
ACL related to HTM debt securities, recovery of provision expense | (1) |  | $ (1) |  |  |  |  |
Credit loss, reversion period |  |  | 2 years |  |  |  |  |
ACL related to loans | 8,173 | $ 4,811 | $ 8,173 | $ 4,811 | $ 7,571 | 5,269 | $ 5,214 | $ 6,483
Provision expense | 812 | (378) | 1,391 | (691) |  |  |  |
ACL related to off-balance sheet credit | 643 |  | 643 |  |  | 0 |  |
ACL related to off-balance sheet credit with corresponding provision expense | 77 |  | 11 |  |  |  |  |
LOANS [Abstract] |  |  |  |  |  |  |  |
Loans held for sale | 0 |  | 0 |  |  | 0 |  |
Consumer Loans [Member] |  |  |  |  |  |  |  |
ALLOWANCE FOR LOAN LOSSES [Abstract] |  |  |  |  |  |  |  |
ACL related to loans | 2,364 | 1,215 | 2,364 | 1,215 | $ 2,097 | $ 1,257 | $ 1,206 | $ 1,384
Provision expense | $ 550 | $ 77 | $ 1,000 | $ 266 |  |  |  |
Loans maturity period |  |  | 6 years |  |  |  |  |

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