DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Accounts Receivable, net (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Accounts receivable, net [Line Items]
Accounts receivable	$ 188,234	$ 163,834
Accounts receivable, net	141,297	128,219
Provision for returns [Member]
Accounts receivable, net [Line Items]
Accounts receivable, reserves	(11,922)	(7,314)
Provision for promotions, rebates and other [Member]
Accounts receivable, net [Line Items]
Accounts receivable, reserves	(34,545)	(27,737)
Provisions for doubtful accounts and sales allowances [Member]
Accounts receivable, net [Line Items]
Accounts receivable, reserves	$ (470)	$ (564)