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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Apr. 26, 2015
Apr. 27, 2014
Apr. 28, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS      
Discontinued Operation, Tax Effect of Discontinued Operation $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ 1,226us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation