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Note 13 - Fair Value Measurement (Tables)
9 Months Ended
Sep. 30, 2013
Fair Value Measurements, Valuation Techniques [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   

September 30, 2013

 
   

Fair Value Measurements Using

    Assets at   
   

Level 1

   

Level 2

   

Level 3

   

Fair Value

 
                                 

Derivative instrument asset

  $     $ 466,409     $     $ 466,409  

Total Assets

  $     $ 466,409     $     $ 466,409  
                                 

Derivative instrument liability

  $     $ 310,865     $     $ 310,865  

Total Liabilities

  $     $ 310,865     $     $ 310,865  
   

December 31, 2012

 
   

Fair Value Measurements Using

   

Assets at

 
   

Level 1

   

Level 2

   

Level 3

   

Fair Value

 
                                 

Derivative instrument asset

  $     $ 444,782     $     $ 444,782  

Total Assets

  $     $ 444,782     $     $ 444,782