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Other Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 26, 2014
Apr. 28, 2013
Jan. 27, 2013
Other Assets Noncurrent [Line Items]      
Cash surrender value - life insurance $ 647 $ 625 $ 700
Non-compete agreement 1,047 185 222
Customer relationships 830    
Other 399 341 273
Other assets $ 2,923 $ 1,151 [1] $ 1,195
[1] Derived from audited financial statements.