CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Aug. 03, 2018	Jul. 28, 2017
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)	24,011,550	24,055,682
Common stock, shares outstanding (in shares)	24,011,550	24,055,682
Series A Junior Participating Preferred Stock [Member]
Shareholders' Equity:
Preferred stock, shares authorized (in shares)	300,000	300,000