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CONSUMER LOANS - Impaired and general reserve for allowance for loan losses (Details) - Consumer - USD ($) $ in Thousands | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total consumer loans | $ 149,368 |  | $ 142,340 |  |  |
Allowance for loan losses | 867 | $ 816 | 830 | $ 763 | $ 724 | $ 884
Impaired loans individually evaluated for impairment | 1,666 |  | 1,610 |  |  |
Specific reserve against impaired loans | 699 |  | 612 |  |  |
Other loans collectively evaluated for allowance | 147,702 |  | 140,730 |  |  |
General allowance for loan losses | $ 168 |  | $ 218 |  |  |

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