Note 4 - Segment Reporting (Details) - Assets by Reportable Segments (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Total Assets
Total assets	$ 324,938	$ 314,946
Operating Segments [Member] | Trucking [Member]
Total Assets
Total assets	195,541	200,168
Corporate, Non-Segment [Member]
Total Assets
Total assets	$ 129,397	$ 114,778