Foreign Currency Derivatives (Details) (USD $)	Mar. 31, 2013	Dec. 30, 2012
Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	$ 2,878,000	$ 519,000
Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	14,000	410,000
Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	4,774,000	756,000
Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	6,332,000	4,481,000
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Asset, Notional Amount	25,900,000	26,400,000
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	298,000	0
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	4,000	23,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Asset, Notional Amount	49,700,000	121,800,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	4,156,000	731,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	5,714,000	4,455,000
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Asset, Notional Amount	53,600,000	71,000,000
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	2,580,000	519,000
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	10,000	387,000
Foreign Exchange Option [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	618,000	25,000
Foreign Exchange Option [Member] | Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	$ 618,000	$ 26,000