Note 11 - Stock Option Plans (Details) - Black-Scholes Option Pricing Model Assumptions for Stock Option Grants (Combined Equity Incentive Plans [Member], USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Minimum [Member]
Note 11 - Stock Option Plans (Details) - Black-Scholes Option Pricing Model Assumptions for Stock Option Grants [Line Items]
Expected volatility	91.90%	91.90%
Risk free interest rate	0.74%	0.89%
Expected life (years)	5 years	5 years
Exercise price (in Dollars per share)	$ 0.61	$ 0.03
Maximum [Member]
Note 11 - Stock Option Plans (Details) - Black-Scholes Option Pricing Model Assumptions for Stock Option Grants [Line Items]
Expected volatility		110.00%
Risk free interest rate	1.89%	2.01%
Expected life (years)	10 years	10 years
Exercise price (in Dollars per share)	$ 1.80	$ 2.00