Note 14 - Income Taxes - Reconciliation of Statutory Federal Income Tax Rate and Effective Income Tax Rate (Details)	12 Months Ended
	Nov. 24, 2018	Nov. 25, 2017	Nov. 26, 2016
Statutory federal income tax rate	22.20%	35.00%	35.00%
Revaluation of deferred tax assets resulting from new enacted rates	10.90%
State income tax, net of federal benefit	4.60%	3.90%	4.20%
Excess tax benefits from stock-based compensation	(1.50%)	(1.80%)	(0.30%)
Other	(3.50%)	(2.60%)	(0.30%)
Effective income tax rate	32.70%	34.50%	38.60%