DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016	May 31, 2015
Accrued Liabilities [Abstract]
Employee compensation and benefits	$ 36,415	$ 22,955
Accrued interest on 5.50% Senior Notes	10,407	10,501
Warranty obligation, short-term portion	6,863	6,805
VAT/Sales Tax Payable	5,433	4,894
Restructuring and other related charges	1,270	5,783
Accrued other	13,897	17,364
Accrued liabilities	$ 74,285	$ 68,302
5.50% Senior Notes | Senior notes
Debt Instrument [Line Items]
Stated interest rate	5.50%		5.50%