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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Adjusted Balance Sheet to Apply Adopted Guidance (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Assets
Allowance for credit losses: loans	$ (19,843)	$ (20,653)	$ (17,183)	$ (13,885)	$ (13,732)
Allowance for credit losses: held-to-maturity securities		(71)
Deferred tax assets, net		8,617
Liabilities
Allowance for credit losses on off-balance sheet exposures		3,900
Shareholders' Equity
Retained earnings	$ 49,637	46,568	$ 51,887
Cumulative effect adjustment amount
Assets
Allowance for credit losses: loans		(17,183)
Allowance for credit losses: held-to-maturity securities		0
Deferred tax assets, net		6,914
Liabilities
Allowance for credit losses on off-balance sheet exposures		419
Shareholders' Equity
Retained earnings		51,887
Balance January 1, 2023 (after adjustment)
Assets
Allowance for credit losses: loans		(3,470)
Allowance for credit losses: held-to-maturity securities		(71)
Deferred tax assets, net		1,703
Liabilities
Allowance for credit losses on off-balance sheet exposures		3,481
Shareholders' Equity
Retained earnings		$ (5,319)