INCOME TAXES - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Current:
Domestic	$ 1,037	$ 56	$ 87
Foreign	71,773	74,706	129,863
Total current	72,810	74,762	129,950
Deferred:
Domestic	350	3,779	(4,734)
Foreign	(21,876)	(67,947)	(55,362)
Total deferred	(21,526)	(64,168)	(60,096)
Provision for income taxes	$ 51,284	$ 10,594	$ 69,854
Domestic statutory income tax rate	17.00%	17.00%	17.00%