Derivative Instruments - Balance Sheet Location (Details) (Foreign Exchange Contract [Member], USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Gross derivative asset, fair value	$ 0	$ 0
Gross derivative liability, fair value	0	0
Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Gross derivative asset, fair value	0	0
Gross derivative liability, fair value	1,215	7,252
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Gross derivative asset, fair value	2,260	1,668
Gross derivative liability, fair value	0	0
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Gross derivative asset, fair value	0	0
Gross derivative liability, fair value	$ 459	$ 8,383