INCOME TAXES - Schedule of Income Before Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Domestic	$ (107,088)	$ (35,032)	$ 32,475
Foreign	14,176	16,373	19,710
Income before income tax expense	$ (92,912)	$ (18,659)	$ 52,185