Note 9 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Aug. 29, 2015	Nov. 29, 2014
Minimum [Member] | Transportation Equipment [Member]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	2 years
Minimum [Member]
Operating Lease, Lease Term	1 year
Renewal Term On Operating Lease	5 years
Lease Guarantees Term	1 year
Maximum [Member] | Transportation Equipment [Member]
Lessee Leasing Arrangements, Operating Leases, Term of Contract	7 years
Maximum [Member]
Operating Lease, Lease Term	15 years
Renewal Term On Operating Lease	15 years
Lease Guarantees Term	10 years
Lease Obligations of Licensee Operators [Member]
Loss Contingency, Estimate of Possible Loss	$ 2,594	$ 3,164