REVENUE RECOGNITION - Contract Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 40,572	$ 37,811
Contract assets, current, net	11,625	10,425
Contract assets, non-current, net	13,897	13,698
Deferred revenue, current	8,352	7,105
Deferred revenue, non-current	$ 2,279	$ 1,119