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Fair Value Measurement, Financial Instruments And Risk Management (Summary Of Activity Associated With Cash Flow Hedges Reflected In AOCI) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 24, 2012
Fair Value Disclosures [Abstract]  
Beginning balance, net of tax $ 1,542
Changes in fair value gain, net of tax 781
Reclassification to earnings, net of tax (783)
Ending balance, net of tax $ 1,540