LEASES - Operating Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease expense	$ 3,336	$ 3,834	$ 6,795	$ 7,585
Variable lease expense	757	857	1,507	1,639
Cash outflows from operating leases	$ 4,254	$ 2,100	$ 8,454	$ 4,200