Note 11 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Aug. 26, 2017	Nov. 26, 2016
Lease Obligations of Licensee Operators [Member]
Loss Contingency, Estimate of Possible Loss	$ 2,930	$ 1,868
Minimum [Member]
Operating Lease, Lease Term	1 year
Renewal Term On Operating Lease	5 years
Lease Guarantees Term	1 year
Minimum [Member] | Transportation Equipment [Member]
Lessee, Operating Lease, Term of Contract	2 years
Maximum [Member]
Operating Lease, Lease Term	15 years
Renewal Term On Operating Lease	15 years
Lease Guarantees Term	10 years
Maximum [Member] | Transportation Equipment [Member]
Lessee, Operating Lease, Term of Contract	7 years