CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jul. 31, 2020	Aug. 02, 2019
Shareholders' Equity:
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)	0	0
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	23,697,396	24,049,240
Common stock, shares outstanding (in shares)	23,697,396	24,049,240
Series A Junior Participating Preferred Stock [Member]
Shareholders' Equity:
Preferred stock, shares authorized (in shares)	300,000	300,000