Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	May 28, 2016	Aug. 29, 2015
Common Class A [Member]
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	15,400,818	15,246,588
Common stock, shares outstanding (in shares)	15,400,818	15,246,588
Common Class B [Member]
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	4,849,519	4,854,519
Common stock, shares outstanding (in shares)	4,849,519	4,854,519
Receivables, reserves	$ 10,252	$ 6,007
Accumulated depreciation	$ 649,289	$ 618,269
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0