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LOANS RECEIVABLE - Summary of past due loans in non-accrual and past 90 days still on accrual (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | $ 7,736 | $ 7,767
Interest Income Recognized on Non-accrual Loans | 0 |
Amortized Cost Basis of Loans >= 90 Day Past Due and Still Accruing | 0 | 61
Amortized Cost Basis of Non-accrual Loans Without Related Allowance | 7,736 |
Residential Portfolio Segment | Residential one-to-four family |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 7,460 | 7,498
Interest Income Recognized on Non-accrual Loans | 0 |
Amortized Cost Basis of Loans >= 90 Day Past Due and Still Accruing | 0 | 0
Amortized Cost Basis of Non-accrual Loans Without Related Allowance | 7,460 |
Residential Portfolio Segment | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 160 | 182
Interest Income Recognized on Non-accrual Loans | 0 |
Amortized Cost Basis of Loans >= 90 Day Past Due and Still Accruing | 0 | 0
Amortized Cost Basis of Non-accrual Loans Without Related Allowance | 160 |
Commercial Portfolio Segment | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 65 | 35
Interest Income Recognized on Non-accrual Loans | 0 |
Amortized Cost Basis of Loans >= 90 Day Past Due and Still Accruing | 0 | 61
Amortized Cost Basis of Non-accrual Loans Without Related Allowance | 65 |
Junior Lien Portfolio Segment | Junior liens |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 51 | 52
Interest Income Recognized on Non-accrual Loans | 0 |
Amortized Cost Basis of Loans >= 90 Day Past Due and Still Accruing | 0 | $ 0
Amortized Cost Basis of Non-accrual Loans Without Related Allowance | $ 51 |

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