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Note 6 - Fair Value Measurement (Tables)
12 Months Ended
Dec. 31, 2014
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   

December 31, 2014

 
   

Fair Value Measurement 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  
   

December 31, 2013

 
   

Fair Value Measurement Using

   

Liabilities at

 
   

Level 1

   

Level 2

   

Level 3

   

Fair Value

 

Derivative instrument liability

  $     $ 491,098     $     $ 491,098  

Total Liabilities

  $     $ 491,098     $     $ 491,098