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Note 13 - Schedule of Warrant Valuation Assumptions (Details)
12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
Perttu Warrant Tranches 1-3 [Member] | Minimum [Member]  
Exercise price (in dollars per share) $ 0.80
Perttu Warrant Tranches 1-3 [Member] | Maximum [Member]  
Exercise price (in dollars per share) 1.60
Perttu Warrant Tranches 1-3 [Member]  
Share Price $ 0.70
Expected time to exercise (in years) 2 years 182 days
Risk free interest rate 0.35%
Volatility 121.02%
Expected forfeiture rate | $ $ 0