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Commitments and Contingencies
6 Months Ended
Jun. 30, 2011
Commitments and Contingencies [Abstract]  
Commitments and Contingencies
7.    Commitments and Contingencies
 
The Company is involved in legal actions that arise in the ordinary course of business.  Although the outcomes of any such legal actions cannot be predicted, in the opinion of management, the resolution of any currently pending or threatened actions will not have a material adverse effect upon our financial position or results of operations.  

The Company accrues for costs related to public liability, cargo, employee health insurance and work-related injury claims. When a loss occurs, we record a reserve for the estimated outcome. As additional information becomes available, adjustments are made. Accrued claims liabilities include all such reserves and our estimate for incidents that have been incurred but not reported.