Note 5 - Acquisition (Details) - Assets Acquired and Liabilities Assumed (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 5 - Acquisition (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Goodwill	$ 94,218	$ 94,064
Terrafirma Roadways [Member]
Note 5 - Acquisition (Details) - Assets Acquired and Liabilities Assumed [Line Items]
Receivables, net		2,155
Property, plant and equipment, net		2,160
Goodwill		4,544
Other intangibles, net		4,528
Total assets acquired		13,387
Accounts payable		3,350
Short-term debt		284
Accrued liabilities		285
Deferred tax liability		1,092
Other noncurrent liabilities		1,600
Total liabilities assumed		6,611
Total cash conveyed at closing		$ 6,776