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Equipment held for sale
12 Months Ended
Dec. 31, 2012
Equipment held for sale [Abstract]  
Equipment held for sale
3.  Equipment held for sale

Revenue equipment categorized as equipment held for sale on the Consolidated Balance Sheet at December 31, 2012 and 2011 totaled $0.8 million and $3.4 million, respectively.  Equipment held for sale is no longer subject to depreciation, and are recorded at the lower of depreciated carrying value or fair market value less selling costs.  We expect to sell these assets by the end of the first quarter in 2013.