SCHEDULE II: VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Sales and return allowances, discounts, chargebacks and rebates:
Movement in valuation and qualifying accounts
Balance at Beginning of Year	$ 36,277	$ 19,730	$ 15,159
Additions Charged as a Reduction to Revenue	217,336	73,898	28,743
Deductions	(131,096)	(57,351)	(24,172)
Balance at End of Year	122,517	36,277	19,730
Deferred tax assets valuation allowance:
Movement in valuation and qualifying accounts
Balance at Beginning of Year	4,310	2,670	42,500
Deductions	(3,737)	1,640	(39,830)
Balance at End of Year	573	4,310	2,670
(Reversed) recorded valuation allowance	$ (3,700)	$ 1,600	$ (39,800)