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Note 16 - Fair Value Measurement (Tables)
3 Months Ended
Mar. 31, 2016
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
 
 
March 31, 2016
 
 
 
Fair Value Measurement Using
 
 
Assets (Liabilities)
 
 
 
Level 1
 
 
Level 2
 
 
Level 3
 
 
at Fair value
 
                                 
Derivative instrument asset
  $ -     $ 102,560     $ -     $ 102,560  
                                 
Derivative instrument liability
  $ -     $ (519,381 )   $ -     $ (519,381 )
 
 
December 31, 2015
 
 
 
Fair Value Measurement Using
 
 
Assets (Liabilities)
 
 
 
Level 1
 
 
Level 2
 
 
Level 3
 
 
at Fair value
 
                                 
Derivative instrument asset
  $ -     $ -     $ -     $ -  
                                 
Derivative instrument liability
  $ -     $ (2,027,086 )   $ -     $ (2,027,086 )