Note 3 - Allocation of Fair Value of the Acquired Business (Details) - USD ($) $ in Thousands	May 28, 2016	Feb. 02, 2015
Zenith Freight Lines [Member]
Acquired cash and cash equivalents		$ 1,677
Accounts receivable, net		3,399
Prepaid expenses and other current assets		496
Property and equipment		18,110
Other long-term assets		646
Intangible assets		6,362
Total identifiable assets acquired		30,690
Accounts payable and accrued liabilities		(4,038)
Notes payable		(4,329)
Total liabilities assumed		(8,367)
Net identifiable assets acquired		22,323
Goodwill		9,858
Total net assets acquired		$ 32,181
Goodwill	$ 11,588