Note 4 - Related Party Transactions (Details Textual) - BBI [Member] - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Tire Purchases [Member]
Related Party Transaction, Amounts of Transaction	$ 1,100,000	$ 1,100,000
Purchase Of Fuel Tires And Related Services [Member]
Related Party Transaction, Amounts of Transaction	$ 274,000	$ 413,000