XML 62 R53.htm IDEA: XBRL DOCUMENT v2.4.0.8
Goodwill (Detail) (USD $)
12 Months Ended
Apr. 27, 2014
Apr. 28, 2013
Apr. 29, 2012
Goodwill And Intangible Assets Disclosure [Abstract]      
beginning balance $ 11,462,000 $ 11,462,000 $ 11,462,000
loss on impairment 0 0 0
acquisitions 0 0 0
ending balance $ 11,462,000 $ 11,462,000 $ 11,462,000