Summary of Significant Accounting Policies (Schedule of Estimated Useful Life) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Tractors [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	80 months
Salvage Value Percentage	0.00%
Trailers [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	12 years
Salvage Value	1,000
Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	30 years
Salvage Value Percentage	0.00%
Service And Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Salvage Value Percentage	0.00%
Minimum [Member] | Service And Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Maximum [Member] | Service And Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	10 years