CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Oct. 29, 2016	Jul. 30, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowance (in dollars)	$ 9,915	$ 9,638
Intangible assets, accumulated amortization (in dollars)	$ 37,801	$ 34,315
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized shares	5,000	5,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	100,000	100,000
Common stock, issued shares	50,581	50,383
Common stock, outstanding shares	50,581	50,383