Shareholders' Equity - Gains and Losses, Net of Tax Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Location of Gain (Loss) Reclassified from Accumulated OCI into Income	$ 4,643	$ (3,850)
Foreign currency contracts | Other expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Location of Gain (Loss) Reclassified from Accumulated OCI into Income	1,325	(8,399)
Foreign currency contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Location of Gain (Loss) Reclassified from Accumulated OCI into Income	$ 3,318	$ 4,549