LEASES - Components of Lease Right-of-Use Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Assets
Operating lease, right-of-use assets	$ 62,379	$ 66,664
Liabilities
Operating lease liabilities, current	13,271	12,942
Operating lease liabilities, non-current	77,156	82,456
Total operating lease liabilities	$ 90,427	$ 95,398