Note 11 - Warrant Transactions (Details) - Warrant Activity	12 Months Ended
	Dec. 31, 2013	Mar. 05, 2013	Feb. 19, 2010	Jan. 25, 2008
Warrant Activity [Abstract]
Number of Warrants	4,200,000
Weighted Average Exercise Price	2.98	2.75	3.55	2.75
Exercisable at December 31, 2013	3,111,690
Exercisable at December 31, 2013	2.61
Granted	510,204
Granted	1.96
Exercised	(1,002,147)
Exercised	2.75
Forfeited or expired	(596,367)
Forfeited or expired	2.75
Number of Warrants	3,111,690
Weighted Average Exercise Price	2.61	2.75	3.55	2.75