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LEASES - Lease Costs for Operating Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
LEASES        
Finance lease amortization of right-of-use asset $ 19 $ 19 $ 38 $ 38
Finance lease interest on lease liability 42 43 85 86
Operating lease costs 302 396 651 791
Variable lease costs 52 52 105 105
Total lease cost $ 415 $ 510 $ 879 $ 1,020