Note 12 - Warrants (Detail) - Warrant Activity (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 05, 2013	Jan. 25, 2008
Outstanding at December 31, 2012	4,200,000
Outstanding at December 31, 2012 (in Dollars per Item)	2.98	2.75	2.75
Exercised	(1,002,147)
Exercised (in Dollars per share)	$ 2.75
Outstanding at March 31, 2013	3,197,853
Outstanding at March 31, 2013 (in Dollars per Item)	2.98	2.75	2.75
Exercisable at March 31, 2013	3,197,853
Exercisable at March 31, 2013 (in Dollars per Item)	3.05