Note 4 - Segment Reporting (Details) - Percentage of Base Revenue, by Segment (Sales Revenue, Services, Net [Member], Product Concentration Risk [Member])	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Trucking [Member]
Three Months Ended
Percent of Base Revenue	66.60%	73.10%	67.40%	74.50%
SCS [Member]
Three Months Ended
Percent of Base Revenue	33.40%	26.90%	32.60%	25.50%