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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Loans (Details) - USD ($) $ in Thousands | 9 Months Ended |  |  |  |  |  |  |
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Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Accounting Policies [Abstract] |  |  |  |  |  |  |  |
Unamortized retained loan discounts | $ 7,000 |  |  | $ 7,900 |  |  |  |
Loan receivable, nonaccrual, past due period (more than) | 60 days |  |  |  |  |  |  |
Allowance for credit losses | $ 2,617 | $ 2,451 | $ 2,071 | $ 2,032 | $ 1,866 | $ 1,607 | $ 1,644 | $ 1,680

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