LEASES - Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Mar. 31, 2020
Leases [Abstract]
ROU assets, net	$ 15,084	$ 16,383
Included in other assets, net	us-gaap:OtherAssets	us-gaap:OtherAssets
Short-term lease liabilities	$ 3,188	$ 3,056
Included in accrued and other current liabilities	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Long-term lease liabilities	$ 13,757	$ 15,179
Included in other long-term liabilities	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Total operating lease liabilities	$ 16,945	$ 18,235