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Subsequent Events (Details) (USD $)
3 Months Ended 6 Months Ended 0 Months Ended
Oct. 26, 2013
Oct. 27, 2012
Oct. 26, 2013
Oct. 27, 2012
Nov. 21, 2013
Subsequent Event [Member]
Subsequent Event [Line Items]          
Cash dividend declared per share (in dollars per share) $ 0.090 $ 0.000 $ 0.210 $ 0.115 $ 0.09