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Note 16 - Fair Value Measurement (Tables)
9 Months Ended
Sep. 30, 2015
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
    September 30, 2015  
    Fair Value Measurements Using    

Liabilities at

 
   

Level 1

   

Level 2

   

Level 3

   

Fair value

 
                                 

Derivative instrument liability

  $ -     $ 2,181,368     $ -     $ 2,181,368  

Total liabilities

  $ -     $ 2,181,368     $ -     $ 2,181,368  
    December 31, 2014  
    Fair Value Measurements Using    

Liabilities at

 
   

Level 1

   

Level 2

   

Level 3

   

Fair value

 
                                 

Derivative instrument liability

  $ -     $ 1,115,805     $ -     $ 1,115,805  

Total liabilities

  $ -     $ 1,115,805     $ -     $ 1,115,805