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Note 6 - Derivative Obligations, Fair Value Assumptions (Details) - $ / shares
8 Months Ended 12 Months Ended
Aug. 31, 2015
Feb. 16, 2016
Jun. 30, 2016
Jun. 30, 2015
Feb. 29, 2016
Series A Warrant [Member]          
Share Price $ 13.60   $ 2.93    
Fair Value Assumptions, Expected Volatility Rate 72.00%   99.00%    
Fair Value Assumptions, Expected Term 5 years 182 days   4 years 255 days    
Fair Value Inputs, Discount Rate 1.54%   1.01%    
Fair Value Assumptions, Expected Dividend Rate 0.00%   0.00%    
Exercise price (in dollars per share) $ 13.60   $ 8    
Series B Warrant [Member]          
Share Price $ 13.60 $ 4      
Fair Value Assumptions, Expected Volatility Rate 62.00% 137.00%      
Fair Value Assumptions, Expected Term 1 year 182 days 1 year      
Fair Value Inputs, Discount Rate 0.57% 0.50%      
Fair Value Assumptions, Expected Dividend Rate 0.00% 0.00%      
Exercise price (in dollars per share) $ 13.60 $ 13.60      
Share Price         $ 4
Fair Value Assumptions, Expected Volatility Rate     80.00% 75.00%  
Fair Value Assumptions, Expected Term     5 years 5 years  
Fair Value Assumptions, Expected Dividend Rate     0.00% 0.00%