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Note 7 - Intangible Assets and Goodwill (Tables)
 3 Months Ended
Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class [Table Text Block]
         
March 31, 2014
    December 31, 2013  
   
Gross Value
   
Currency
Translation
Adjustment
   
Accumulated
Amortization
   
Net Book
Value
   
Net Book
Value
   
Useful Life
 
Developed technology
  $ 16,700,000     $ (963,479 )   $ (4,264,090 )   $ 11,472,431     $ 11,753,003       15  
In-process research & development
    5,502,686       (222,625 )     -       5,280,061       5,286,127    
Indefinite
 
Distributor relationships
    4,700,000       (424,265 )     (3,637,480 )     638,255       863,655       5  
Patents
    1,000,000       (54,717 )     (241,456 )     703,827       719,574       16  
Elevess trade name
    1,000,000       -       (655,288 )     344,712       376,050       9  
    Total
  $ 28,902,686     $ (1,665,086 )   $ (8,798,314 )   $ 18,439,286     $ 18,998,409          
Schedule of Goodwill [Table Text Block]
   
For the three
months ended
March 31,
2014
 
Balance, beginning
  $ 9,443,894  
Effect of foreign currency adjustments     (9,605 )
Balance, ending   $ 9,434,289