Consolidated Balance Sheets (Parentheticals) - $ / shares	Nov. 28, 2020	Nov. 30, 2019
Preferred stock, shares authorized (in shares)	10,045,900	10,045,900
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	160,000,000	160,000,000
Common stock, shares outstanding (in shares)	51,906,663	51,241,190