INCOME TAXES - Summary of Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Current income tax expense:
Federal	$ 29,238	$ 25,927	$ 20,123
State	2,223	3,825	2,260
Foreign	6,628	1,307	1,174
Current income tax expense, Total	38,089	31,059	23,557
Deferred income tax expense (benefit):
Federal	(30,216)	2,836	5,347
State	(4,461)	17	96
Foreign	(7,482)	(139)	(250)
Deferred income tax expense (benefit), Total	(42,159)	2,714	5,193
Income tax expense (benefit), Total	$ (4,070)	$ 33,773	$ 28,750