Note 9 - Equity Method Investment (Details) (USD $)	3 Months Ended		9 Months Ended			1 Months Ended	9 Months Ended		9 Months Ended	12 Months Ended	1 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	May 31, 2016 Scenario, Forecast [Member]	May 31, 2011 Transport Enterprise Leasing, LLC [Member]	Sep. 30, 2013 Transport Enterprise Leasing, LLC [Member]	Dec. 31, 2012 Transport Enterprise Leasing, LLC [Member]	Sep. 30, 2013 Transport Enterprise Leasing, LLC [Member]	Dec. 31, 2012 Earnout [Member]	Dec. 31, 2012 Maximum [Member]
Note 9 - Equity Method Investment (Details) [Line Items]
Equity Method Investment, Ownership Percentage					100.00%	49.00%
Payments to Acquire Businesses, Gross						$ 1,500,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value											4,500,000
Payments to Acquire Businesses and Interest in Affiliates										2,900,000
Gain (Loss) on Sale of Equity Investments							14,400,000
Equity Method Investment, Net Sales Proceeds									100,000
Equity Method Investment, Deferred Gain on Sale									500,000
Gain (Loss) on Disposition of Property Plant Equipment			(71,000)	157,000					600,000
Deferred Gain on Sale of Property							700,000
Due from Related Parties							1,500,000	800,000
Income (Loss) from Equity Method Investments	1,150,000	555,000	2,180,000	1,225,000			2,200,000
Equity Method Investments							$ 8,400,000	$ 6,100,000