Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	May 27, 2017	Aug. 27, 2016
Receivables, reserves	$ 11,652	$ 7,675
Accumulated depreciation	$ 689,859	$ 661,295
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
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
Common Stock
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)	15,420,975	15,415,125
Common stock, shares outstanding (in shares)	15,420,975	15,415,125
Class B Common Stock
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)	4,845,519	4,849,519
Common stock, shares outstanding (in shares)	4,845,519	4,849,519