DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014
Accrued Liabilities [Abstract]
Employee compensation and benefits	$ 20,688	$ 31,888
Accrued interest	9,192	0
Warranty obligation	8,173	7,717	$ 7,855	$ 7,965
VAT/Sales tax payable	4,343	4,749
Accrued other	18,368	17,687
Accrued liabilities	$ 60,764	$ 62,041