Fair Value Measurement, Financial Instruments and Risk Management (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $) In Thousands	Jun. 26, 2011	Dec. 26, 2010
Assets	$ 52	$ 965
Liabilities	724	298
Foreign Currency Revenue Forecast Contracts [Member]
Assets	45	938
Liabilities	724	278
Foreign Currency Revenue Forecast Contracts [Member] | Level 1 [Member]
Assets
Liabilities
Foreign Currency Revenue Forecast Contracts [Member] | Level 2 [Member]
Assets	45	938
Liabilities	724	278
Foreign Currency Revenue Forecast Contracts [Member] | Level 3 [Member]
Assets
Liabilities
Foreign Currency Forward Exchange Contracts [Member]
Assets	7	27
Liabilities		20
Foreign Currency Forward Exchange Contracts [Member] | Level 1 [Member]
Assets
Liabilities
Foreign Currency Forward Exchange Contracts [Member] | Level 2 [Member]
Assets	7	27
Liabilities		20
Foreign Currency Forward Exchange Contracts [Member] | Level 3 [Member]
Assets
Liabilities
Level 1 [Member]
Assets
Liabilities
Level 2 [Member]
Assets	52	965
Liabilities	724	298
Level 3 [Member]
Assets
Liabilities