Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Nov. 26, 2011	Aug. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 747	$ 798
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares authorized	40,000	40,000
Common stock, shares issued	27,056	27,056
Common stock, shares outstanding	27,056	27,056
Treasury stock, shares	9,372	9,386