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Note 9 - Warrants (Details) - Warrants - Fair Value Weighted Average Assumptions (USD $)
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Warrants - Fair Value Weighted Average Assumptions [Abstract]    
Stock Price (in Dollars per share) $ 2.22 $ 3.12
Exercise Price (in Dollars per share) $ 14.93 $ 14.93
Expected Volatility 76.00% 110.00%
Expected Dividend Yield 0.00% 0.00%
Expected Term (in years) 2 years 328 days 3 years 328 days
Risk-free Interest Rate 0.66% 0.39%