Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Nov. 27, 2021	Nov. 28, 2020	Nov. 30, 2019
Retained Earnings [Member]
Regular dividends (in dollars per share)	$ 0.53	$ 0.455	$ 0.50
Special dividends, per share (in dollars per share)	0.25
Regular dividends (in dollars per share)	$ 0.53	$ 0.46	$ 0.50