Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Nov. 27, 2021	Aug. 28, 2021
Current assets
Allowance for doubtful accounts	$ 275	$ 307
Shareholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.50	$ 0.50
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	51,776,000	51,776,000
Common stock, shares outstanding (in shares)	51,776,000	51,776,000
Treasury stock, at cost, shares (in shares)	18,476,000	18,713,000