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Share Repurchases (Details) (USD $) In Thousands, except Share data	12 Months Ended
	Aug. 03, 2012	Jul. 29, 2011	Jul. 30, 2010
Share Repurchases [Abstract]
Shares of common stock repurchased (in shares)		676,600	1,352,000
Cost of shares repurchased		$ 33,563	$ 62,487
Maximum amount of treasury stock authorized to repurchase	$ 65,000

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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