Derivative Instruments - Balance Sheet Location (Details) (Foreign Exchange Contract [Member], USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Dec. 31, 2013
Other Current Assets [Member]
Offsetting Derivative Assets [Abstract]
Gross amounts of recognized assets	$ 1,598	$ 2,171
Gross amounts offset in the balance sheet	(473)	(698)
Net amounts presented in other current assets	1,125	1,473
Other Current Liabilities [Member]
Offsetting Derivative Liabilities [Abstract]
Gross amounts of recognized liabilities	8,841	7,278
Gross amounts offset in the balance sheet	(3,409)	(4,692)
Net amounts presented in other current liabilities	5,432	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	4,674	4,362
Gross amounts offset in the balance sheet	(1,428)	(3,042)
Net amounts presented in other current liabilities	3,246	1,320
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Offsetting Derivative Assets [Abstract]
Gross amounts of recognized assets	1,598	2,171
Gross amounts offset in the balance sheet	(473)	(698)
Net amounts presented in other current assets	1,125	1,473
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Offsetting Derivative Liabilities [Abstract]
Gross amounts of recognized liabilities	4,167	2,916
Gross amounts offset in the balance sheet	(1,981)	(1,650)
Net amounts presented in other current liabilities	$ 2,186	$ 1,266