Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Feb. 25, 2012	Aug. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 733	$ 798
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	27,056,000	27,056,000
Common stock, shares outstanding	27,056,000	27,056,000
Treasury stock, shares	9,322,000	9,386,000