LEASES - Components of Lease Right-of-Use Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Assets
Operating lease, right-of-use assets	$ 76,054	$ 78,963
Liabilities
Operating lease liabilities, current	9,989	5,875
Operating lease liabilities, non-current	87,884	92,452
Total operating lease liabilities	$ 97,873	$ 98,327