LEASES - Lease Costs for Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
LEASES
Finance lease amortization of right-of-use asset	$ 77	$ 77	$ 77
Finance lease interest on lease liability	162	165	168
Operating lease costs	1,133	1,266	1,312
Variable lease costs	209	209	209
Total lease cost	$ 1,581	$ 1,717	$ 1,766