INCOME TAXES - Summary of Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Current income tax expense (benefit):
Federal	$ 3,902	$ 14,191	$ 15,912
State	(136)	1,925	3,152
Foreign	10,618	12,249	11,175
Current income tax expense, Total	14,384	28,365	30,239
Deferred income tax expense (benefit):
Federal	(25,347)	(113,122)	(8,278)
State	(3,845)	(10,037)	3,578
Foreign	(4,780)	(3,677)	(6,645)
Deferred income tax expense (benefit), Total	(33,972)	(126,836)	(11,345)
Income tax expense (benefit), Total	$ (19,588)	$ (98,471)	$ 18,894