Share Repurchases (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
May 01, 2020	Jul. 31, 2020	Aug. 02, 2019	Aug. 03, 2018
Share Repurchases [Abstract]
Maximum amount of share repurchase authorization	$ 50,000		$ 25,000	$ 25,000
Additional amount of share repurchase authorized	$ 25,000
Shares of common stock repurchased (in shares)		378,974	0	100,000
Cost of shares repurchased		$ 55,007		$ 14,772

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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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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