OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Interest Expense, Net Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest income	$ 677	$ 943	$ 1,058
Interest expense	77,737	50,862	35,186
Interest expense, net	$ (77,060)	$ (49,919)	$ (34,128)