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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Troubled debt restructured loans (Details) $ in Thousands | Mar. 31, 2024 USD ($) borrower loan | Dec. 31, 2023 USD ($)
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Restructured loans to borrowers with financial difficulty | $ 29 | $ 30
Non-accrual and 90+ days past due and still accruing loans to average loans | 0.21% | 0.25%
Allowance for credit losses to non-accrual and 90 days or more and still accruing loans | 549.10% | 409.30%
Single-family Residential |  |
Financing Receivable, Impaired [Line Items] |  |
Number of loans | borrower | 1 |
Troubled debt restructured loans | $ 29,000 |
Real Estate Loan | Single-family Residential |  |
Financing Receivable, Impaired [Line Items] |  |
Restructured loans to borrowers with financial difficulty | $ 29 | $ 30
Number of loans | loan | 1 |

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