Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Impairment of Intangible Assets (Excluding Goodwill)		$ 78,000
Amortization of stock-based compensation	$ 47,274	41,930	$ 36,923
Shipping, Handling and Transportation Costs	$ 77,399	$ 85,591	$ 92,620