BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS - Recent Accounting Pronouncements (Details) - USD ($)	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Loans receivable	$ 1,893,207,000		$ 1,848,139,000
Allowance for credit losses on loans	20,382,000		19,208,000
Allowance for credit losses on off-balance sheet exposures (included in accrued interest and other liabilities)	683,000	$ 684,000	690,000	$ 1,154,000	$ 1,178,000	$ 425,000
Deferred tax asset, net	18,375,000		17,441,000
Retained earnings	$ 159,859,000		$ 157,028,000
Accounting Standards Update 2016-13
Loans receivable						1,740,040,000
Allowance for credit losses on loans						16,615,000
Allowance for credit losses on off-balance sheet exposures (included in accrued interest and other liabilities)						425,000
Deferred tax asset, net						20,884,000
Retained earnings						151,743,000
Adoption under ASC 326 | Accounting Standards Update 2016-13
Loans receivable						1,740,846,000
Allowance for credit losses on loans						18,719,000
Allowance for credit losses on off-balance sheet exposures (included in accrued interest and other liabilities)						1,218,000
Deferred tax asset, net						21,323,000
Retained earnings						150,091,000
Adoption of ASU 2016-13 (CECL) | Accounting Standards Update 2016-13
Loans receivable						806,000
Allowance for credit losses on loans						2,104,000
Allowance for credit losses on off-balance sheet exposures (included in accrued interest and other liabilities)						793,000
Deferred tax asset, net						439,000
Retained earnings						$ (1,652,000)