Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Aug. 28, 2021	Aug. 29, 2020
Accounts receivable, allowance for credit losses	$ 18,416	$ 18,249
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A treasury stock, at cost, shares	1,223,644	1,227,192
Class A Common Stock [Member]
Common stock, votes per share	one
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	48,042,901	46,989,719
Class B Common Stock [Member]
Common stock, votes per share	ten
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares outstanding	8,654,010	9,844,856