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Consolidated Statements Of Operations (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Income Statement [Abstract]      
Discontinued operations, tax expense (benefit) $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ (68)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ 247us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation