Accounts Receivable, Sales and Allowances (Details) - Summary of Adjustments to Gross Sales - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Gross sales	$ 2,891,267	$ 2,511,693	$ 1,433,603
Less adjustments for:
Chargebacks	(1,218,560)	(1,065,244)	(643,004)
Rebates, administrative fees and others	463,724	367,514	177,518
Product returns	28,285	34,272	20,993
Discounts and allowances	55,494	50,384	30,782
Advertising, promotions, and others	(8,361)	(9,203)	(6,258)
Revenues, net	$ 1,116,843	$ 985,076	$ 555,048