Accounts Receivable Allowances (Details) - Summary of Adjustments to Gross Sales - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Receivables [Abstract]
Gross sales	$ 708,368	$ 607,307	$ 1,301,759	$ 1,175,324
Less adjustments for:
Chargebacks	(290,218)	(266,781)	(509,593)	(510,848)
Rebates, administrative fees and others	(102,941)	(100,013)	(191,289)	(175,250)
Product returns	(18,799)	(5,896)	(23,086)	(11,470)
Discounts and allowances	(13,218)	(11,622)	(25,171)	(25,667)
Advertising, promotions and others	(2,458)	(2,075)	(3,539)	(3,791)
Revenues, net	$ 280,734	$ 220,920	$ 549,081	$ 448,298