ALLOWANCE FOR CREDIT LOSSES - Summary of loans by portfolio segment evaluated for impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Loans
Individually Evaluated	$ 5,916	$ 11,657
Collectively Evaluated	1,554,814	1,533,470
Total	1,560,730	1,545,127
Allowance for Credit Losses on Loans
Individually Evaluated	0	27
Collectively Evaluated	14,154	13,373
Total	14,154	13,400
Residential Portfolio Segment \| Residential one-to-four family
Loans
Individually Evaluated	5,721	8,418
Collectively Evaluated	545,208	588,836
Total	550,929	597,254
Allowance for Credit Losses on Loans
Individually Evaluated	0	27
Collectively Evaluated	1,968	2,237
Total	1,968	2,264
Residential Portfolio Segment \| Multifamily
Loans
Individually Evaluated	146	516
Collectively Evaluated	682,418	690,174
Total	682,564	690,690
Allowance for Credit Losses on Loans
Individually Evaluated	0	0
Collectively Evaluated	7,046	5,491
Total	7,046	5,491
Non-residential \| Non-residential
Loans
Individually Evaluated	0	2,671
Collectively Evaluated	232,505	213,390
Total	232,505	216,061
Allowance for Credit Losses on Loans
Individually Evaluated	0	0
Collectively Evaluated	3,748	3,357
Total	3,748	3,357
Construction \| Construction
Loans
Individually Evaluated	0	0
Collectively Evaluated	60,414	17,799
Total	60,414	17,799
Allowance for Credit Losses on Loans
Individually Evaluated	0	0
Collectively Evaluated	1,222	1,697
Total	1,222	1,697
Commercial and industrial \| Commercial and industrial
Loans
Individually Evaluated	0	0
Collectively Evaluated	11,768	4,653
Total	11,768	4,653
Allowance for Credit Losses on Loans
Individually Evaluated	0	0
Collectively Evaluated	94	47
Total	94	47
Junior liens \| Junior liens
Loans
Individually Evaluated	49	52
Collectively Evaluated	22,454	18,579
Total	22,503	18,631
Allowance for Credit Losses on Loans
Individually Evaluated	0	0
Collectively Evaluated	76	451
Total	76	451
Consumer and other \| Consumer and other
Loans
Individually Evaluated	0	0
Collectively Evaluated	47	39
Total	47	39
Allowance for Credit Losses on Loans
Individually Evaluated	0	0
Collectively Evaluated	0	0
Total	$ 0	0
Unallocated
Loans
Individually Evaluated		0
Collectively Evaluated		0
Total		0
Allowance for Credit Losses on Loans
Individually Evaluated		0
Collectively Evaluated		93
Total		$ 93

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