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Intangible Impairment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Jan. 25, 2013
Jan. 25, 2013
Apr. 27, 2012
Intangible Assets [Roll Forward]      
Intangible Assets, Net     $ 0
Intangible Assets, Net     0
Mimi's [Member]
     
Intangible Assets [Roll Forward]      
Intangible Assets, Net   16,731 39,877
Infinite-lived Intangible Assets Impaired (22,667)    
Accumulated amortization   479  
Intangible Assets, Net   16,731 39,877
Impaired Assets Estimated Fair Value   125,555  
Impaired Assets Carrying Value   $ 148,222