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Income Taxes (Detail And Activity Of The ASC 740-10 Liability) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 27, 2013
Dec. 28, 2012
Income Taxes [Abstract]    
Unrecognized Tax Benefits, Beginning Balance $ 1,015 $ 170
Additions based on tax positions   845
Reduction for prior year tax deductions (299)  
Unrecognized Tax Benefits, Ending balance $ 716 $ 1,015