CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Apr. 29, 2017	Jul. 30, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1	$ 1.00
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.333	$ 0.333
Common stock, authorized (in shares)	150,000,000	150,000,000
Common stock, issued (in shares)	31,078,172	31,420,310
Common Stock, Shares, Outstanding	31,078,172	31,420,310