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Note 4 - Segment Reporting (Detail) - Assets by Reporting Segments (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Segment Reporting Information Total Assets	$ 341,298	$ 331,494
Trucking [Member]
Segment Reporting Information Total Assets	226,194	218,145
Corporate and Other [Member]
Segment Reporting Information Total Assets	$ 115,104	$ 113,349

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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