DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 184,068	$ 163,834
Accounts receivable, net	141,177	128,219
Provision For Returns
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable reserves	(10,541)	(7,314)
Provision for promotions and rebates
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable reserves	(31,747)	(27,737)
Provision for doubtful accounts and sales allowances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable reserves	$ (603)	$ (564)