EMPLOYEE BENEFIT PLANS - Employee stock ownership plan (Details)	12 Months Ended
	Mar. 31, 2023 USD ($) item shares	Mar. 31, 2022 USD ($) item shares	Mar. 31, 2021 USD ($) item shares
Employee stock ownership plan [Abstract]
Number of hours of service | item	1,000	1,000	1,000
Bank purchased common stock on open market and contributed such shares to ESOP	25,000	25,000	5,354
Expense related to ESOP | $	$ 187,000	$ 192,000	$ 96,000
Shares released and allocated to participants	368,194	387,588