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Note 7 - Intangible Assets and Goodwill (Tables)
 6 Months Ended
Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class [Table Text Block]
         
June 30, 2014
   
December 31, 2013
 
   
Gross Value
   
Currency
Translation
Adjustment
   
Accumulated
Amortization
   
Net Book
Value
   
Net Book
Value
   
Useful Life
 
Developed technology
  $ 16,700,000     $ (1,053,173 )   $ (4,530,370 )   $ 11,116,457     $ 11,753,003       15  
In-process research & development
    5,502,686       (264,887 )     -       5,237,799       5,286,127      
Indefinite
 
Distributor relationships
    4,700,000       (427,583 )     (3,861,212 )     411,205       863,655       5  
Patents
    1,000,000       (60,231 )     (256,332 )     683,437       719,574       16  
Elevess trade name
    1,000,000       -       (686,626 )     313,374       376,050       9  
    Total
  $ 28,902,686     $ (1,805,874 )   $ (9,334,540 )   $ 17,762,272     $ 18,998,409          
Schedule of Goodwill [Table Text Block]
Goodwill
 
For the three
months ended
June 30,
2014
   
For the six
months ended
June 30,
2014
 
                 
Balance, beginning
  $ 9,434,289     $ 9,443,894  
Effect of foreign currency adjustments
    (73,405 )     (83,010 )
Balance, ending
  $ 9,360,884     $ 9,360,884