Note 4 - Segment Reporting (Details) - Assets by Reporting Segments (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 4 - Segment Reporting (Details) - Assets by Reporting Segments [Line Items]
Segment Reporting Information Total Assets	$ 337,285	$ 331,494
Trucking [Member]
Note 4 - Segment Reporting (Details) - Assets by Reporting Segments [Line Items]
Segment Reporting Information Total Assets	222,518	218,145
Corporate and Other [Member]
Note 4 - Segment Reporting (Details) - Assets by Reporting Segments [Line Items]
Segment Reporting Information Total Assets	$ 114,767	$ 113,349