Note 15 - Leases and Lease Guarantees (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 24, 2018
Past Due Rents Subject to Negotiation with Lessors	$ 990
Rent Abatement	775
Operating Leases, Rent Expense, Total		$ 41,809	$ 38,970
Operating Lease, Lease and Rental Expense, Unamortized Balance		8,050
Operating Lease, Lease and Rental Expense, Unamortized Balance, Noncurrent		6,799
Real Estate Rental Income (Loss), Net of Expense	156	23
Loss Contingency, Estimate of Possible Loss	1,760	1,751
Lease Obligations of Licensee Operators [Member]
Loss Contingency, Estimate of Possible Loss	1,811	$ 1,776
Acquire Twenty-five Tractors Under Leases [Member]
Lessee, Finance Lease, Lease Not yet Commenced, Annual Payments	$ 705
Lessee, Finance Lease, Lease Not yet Commenced, Term of Contract (Year)	7 years