Note 13 - Income Taxes - Reconciliation of Statutory Federal Income Tax Rate and Effective Income Tax Rate (Details)	12 Months Ended
	Nov. 30, 2024	Nov. 25, 2023	Nov. 26, 2022
Statutory federal income tax rate	21.00%	21.00%	21.00%
State income tax, net of federal benefit	5.40%	3.80%	4.40%
Nondeductible goodwill, restructuring and other charges	(6.90%)	(45.70%)	0.00%
Nontaxable gain on revaluation of contingent consideration	0.00%	8.60%	0.00%
Capital loss carryback	15.90%	0.00%	0.00%
Other	0.40%	3.00%	(0.30%)
Change in valuation allowance	(3.30%)	(18.20%)	0.40%
Effective income tax rate	32.50%	(27.50%)	25.50%