Derivative Instruments And Hedging (Schedule Of Fair Value Of Derivative Instruments By Balance Sheet Location) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total assets	$ 341	$ 253
Fair value of derivative instruments, Total liabilities	343	434
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total liabilities		317
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total assets	284
Derivatives Not Designated As Hedging Instruments [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total liabilities	251
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total liabilities	92	117
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total assets	57
Derivatives Not Designated As Hedging Instruments [Member] | Commodity Contracts - Fuel [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative instruments, Total assets		$ 253