CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Apr. 28, 2012	Jul. 30, 2011
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance (in dollars)	$ 6,601	$ 4,545
Intangible assets, accumulated amortization (in dollars)	$ 9,841	$ 8,143
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	48,905	48,520
Common stock, outstanding shares	48,888	48,493