BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest income	$ 144	$ 168	$ 512	$ 637
Interest expense	(19,237)	(12,347)	(54,189)	(35,170)
Interest expense, net	$ (19,093)	$ (12,179)	$ (53,677)	$ (34,533)