ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ (757)	$ (643)	$ (1,182)	$ (1,444)
Allowance for sales returns and exchanges	(7,861)	(8,583)	$ (9,510)	$ (12,519)
Accounts receivable, net	43,520	58,807
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	52,138	68,033
Allowance for doubtful accounts	(757)	(643)
Allowance for sales returns and exchanges	(7,861)	(8,583)
Accounts receivable, net	$ 43,520	$ 58,807