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Note 4 - Derivative Instrument Assets/Liabilities (Tables)
 12 Months Ended
Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments [Table Text Block]
Derivatives  

Balance Sheet

Location

 

Year ended
December 31,
 2013
 Fair Value
 Asset
 (Liability)

   

Year ended
December 31,
 2013
 Fair Value
 Asset
 (Liability)

 
                     

Foreign currency forward contracts designated as cash flow hedges

 

Derivative instruments

  $ (118,505 )   $ 377,703  
                     

Foreign currency forward contracts not designated as cash flow hedges

 

Derivative instruments

  $ (372,593 )   $ 67,079  
                     

Total foreign currency forward contracts

 

Derivative instruments

  $ (491,098 )   $ 444,782  
Derivative Instruments, Gain (Loss) [Table Text Block]

Derivatives in Cash Flow

Hedging Relationship

 

Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion)

   

Location of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)

   

Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)

   

Location of Gain or (Loss) Recognized in Income on Derivative (ineffective Portion and Amount Excluded from Effectiveness Testing)

   

Amount of Gain or (Loss) Recognized in Income on Derivative (ineffective Portion and Amount Excluded from Effectiveness Testing)

 
                                         
            Operating expenses       (318,605 )                

Foreign currency forward contracts – year ended December 31, 2013

  $ (289,085 )   Cost of revenues       (406 )     —       —  
                                       

Foreign currency forward contracts – year ended December 31, 2012

  $ 44,104       —       —       —       —