Derivative Instruments and Hedging Activities - Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	$ 18,014	$ 0
Accrued Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	6,763	0
Other Non-Current Liabilities [Member] | Foreign Exchange Contracts [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	$ 11,251	$ 0