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Note 5 - Income Taxes	3 Months Ended
Mar. 31, 2012
Income Tax Disclosure [Text Block]	(5) Income Taxes Our effective income tax rate was 41.9% for the first three months of 2012 and 45.1% for the first three months of 2011. This decrease was primarily due to the impact of our driver per diem program on our effective tax rate. The federal statute of limitations remains open for 2008 and forward. We file tax returns in numerous state jurisdictions with varying statutes of limitations.

Note 5 - Income Taxes

3 Months Ended

Mar. 31, 2012

(5) Income Taxes

Our effective income tax rate was 41.9% for the first three months of 2012 and 45.1% for the first three months of 2011. This decrease was primarily due to the impact of our driver per diem program on our effective tax rate.

The federal statute of limitations remains open for 2008 and forward. We file tax returns in numerous state jurisdictions with varying statutes of limitations.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

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+ Details