Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 28, 2016	Aug. 31, 2015
Condensed Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 1,415	$ 1,333
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
Treasury stock, shares	12,951,000	10,909,000