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Note 13 - Segment and Geographic Information (Tables)
3 Months Ended
Mar. 31, 2015
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three Months Ended March 31,
 
   
2015
   
2014
 
Orthobiologics
  $ 11,972,500     $ 11,572,150  
Dermal
    416,183       188,651  
Surgical
    1,389,595       1,752,020  
Ophthalmic
    504,472       208,584  
Veterinary
    1,231,932       630,000  
    $ 15,514,682     $ 14,351,405  
Schedule of Revenue and Operating Income by Geographical Areas [Table Text Block]
   
Three Months Ended March 31,
 
   
2015
   
2014
 
   
Total
Revenue
   
Percentage of
Revenue
   
Total
Revenue
   
Percentage of
Revenue
 
Geographic Location:
                       
United States
  $ 12,591,189       81 %   $ 31,533,817       93 %
Europe
    1,986,324       13 %     1,695,816       5 %
Other
    942,811       6 %     780,654       2 %
Total
  $ 15,520,324       100 %   $ 34,010,287       100 %