Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Nov. 25, 2017	Nov. 26, 2016	Nov. 28, 2015
Retained Earnings [Member]
Regular dividends, per share (in dollars per share)	$ 0.42	$ 0.38	$ 0.34
Special dividends, per share (in dollars per share)	0.35	0.30	0.20
Regular dividends, per share (in dollars per share)	0.42	0.38	0.34
Special dividends, per share (in dollars per share)	$ 0.35	$ 0.30	$ 0.20