Capital Stock (Details) (USD $)	3 Months Ended		12 Months Ended		0 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013	Jul. 28, 2012	Mar. 15, 2012 Common Stock
Class of Stock [Line Items]
Common stock authorized repurchase amount					$ 40,000,000
Repurchase of common stock			1,047,000	597,700
Total Consideration (Dollars in thousands)	$ 0	$ 15,203,000	$ 15,203,000	$ 12,960,000
Average Price Per Share (in dollars per share)			$ 14.52	$ 21.68