DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	May 31, 2015
Accrued Liabilities [Abstract]
Employee compensation and benefits	$ 23,744	$ 36,415
Accrued interest on 5.50% Senior Notes	3,512	10,407
Warranty obligation	6,697	6,863
VAT/Sales tax payable	4,149	5,433
Accrued other	20,937	15,167
Accrued liabilities	$ 59,039	$ 74,285
5.50% Senior Notes [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate of debt instrument	5.50%		5.50%