Note 11 - Warrant Transactions (Details) - Warrant Activity	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2012
Warrant Activity [Abstract]
Number of Warrants	3,111,690	3,111,690
Weighted Average Exercise Price		2.61
Exercisable at March 31, 2014	2,812,414
Exercisable at March 31, 2014	3.00
Exercised	(168,366)
Exercised	1.96
Forfeited or expired	(130,910)
Forfeited or expired	2.75
Number of Warrants	2,812,414	3,111,690
Weighted Average Exercise Price	3.00	2.61