Derivative Instruments - Balance Sheet Location (Details) (Foreign Exchange Contract [Member], USD $) In Thousands, unless otherwise specified	Mar. 30, 2014	Dec. 31, 2013
Other Current Assets [Member]
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Assets	$ 720	$ 2,171
Gross Amounts Offset in the Balance Sheet	(275)	(698)
Net Amounts Presented in Other Current Assets	445	1,473
Other Current Liabilities [Member]
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities	6,079	7,278
Gross amounts offset in the balance sheet	(2,698)	(4,692)
Net Amounts Presented in Other Current Liabilities	3,381	2,586
Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Assets	0	0
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts Presented in Other Current Assets	0	0
Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities	3,876	4,362
Gross amounts offset in the balance sheet	(2,065)	(3,042)
Net Amounts Presented in Other Current Liabilities	1,811	1,320
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Offsetting Derivative Assets [Abstract]
Gross Amounts of Recognized Assets	720	2,171
Gross Amounts Offset in the Balance Sheet	(275)	(698)
Net Amounts Presented in Other Current Assets	445	1,473
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Offsetting Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities	2,203	2,916
Gross amounts offset in the balance sheet	(633)	(1,650)
Net Amounts Presented in Other Current Liabilities	$ 1,570	$ 1,266