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LOANS RECEIVABLE - Aging analysis (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total | $ 1,581,745 | $ 1,545,127
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 6,764 | 7,913
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 330 | 845
90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 6,434 | 7,068
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,574,981 | 1,537,214
Residential one-to-four family |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 597,254
Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 690,690
Non-residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 216,061
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 17,799
Junior liens |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 18,631
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 4,653
Consumer and other |  |
Financing Receivable, Past Due [Line Items] |  |
Total |  | 39
Residential Portfolio Segment | Residential one-to-four family |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 580,396 | 597,254
Residential Portfolio Segment | Residential one-to-four family | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 6,648 | 7,583
Residential Portfolio Segment | Residential one-to-four family | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Residential Portfolio Segment | Residential one-to-four family | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 330 | 845
Residential Portfolio Segment | Residential one-to-four family | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 6,318 | 6,738
Residential Portfolio Segment | Residential one-to-four family | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 573,748 | 589,671
Residential Portfolio Segment | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 696,956 | 690,690
Residential Portfolio Segment | Multifamily | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 182
Residential Portfolio Segment | Multifamily | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Residential Portfolio Segment | Multifamily | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Residential Portfolio Segment | Multifamily | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 182
Residential Portfolio Segment | Multifamily | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 696,956 | 690,508
Nonresidential Portfolio Segment | Non-residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 237,247 | 216,061
Nonresidential Portfolio Segment | Non-residential | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Nonresidential Portfolio Segment | Non-residential | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Nonresidential Portfolio Segment | Non-residential | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Nonresidential Portfolio Segment | Non-residential | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Nonresidential Portfolio Segment | Non-residential | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 237,247 | 216,061
Construction and Land Portfolio Segment | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 36,032 | 17,799
Construction and Land Portfolio Segment | Construction | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Construction and Land Portfolio Segment | Construction | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Construction and Land Portfolio Segment | Construction | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Construction and Land Portfolio Segment | Construction | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Construction and Land Portfolio Segment | Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 36,032 | 17,799
Junior Lien Portfolio Segment | Junior liens |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 21,338 | 18,631
Junior Lien Portfolio Segment | Junior liens | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 51 | 52
Junior Lien Portfolio Segment | Junior liens | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Junior Lien Portfolio Segment | Junior liens | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Junior Lien Portfolio Segment | Junior liens | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 51 | 52
Junior Lien Portfolio Segment | Junior liens | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 21,287 | 18,579
Commercial Portfolio Segment | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 9,743 | 4,653
Commercial Portfolio Segment | Commercial and industrial | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 65 | 96
Commercial Portfolio Segment | Commercial and industrial | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Commercial Portfolio Segment | Commercial and industrial | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Commercial Portfolio Segment | Commercial and industrial | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 65 | 96
Commercial Portfolio Segment | Commercial and industrial | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 9,678 | 4,557
Consumer and Other Portfolio Segment | Consumer and other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 33 | 39
Consumer and Other Portfolio Segment | Consumer and other | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Consumer and Other Portfolio Segment | Consumer and other | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Consumer and Other Portfolio Segment | Consumer and other | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Consumer and Other Portfolio Segment | Consumer and other | 90 Days and Greater Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
Consumer and Other Portfolio Segment | Consumer and other | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 33 | $ 39

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