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Note 5 - Segment Reporting (Detail) - Assets by Reporting Segments (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Total Assets	$ 336,950	$ 336,191
Trucking [Member]
Segment Reporting Information Total Assets	226,915	231,776
Corporate and Other [Member]
Segment Reporting Information Total Assets	$ 110,035	$ 104,415

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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