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Note 14 - Segment and Geographic Information (Tables)
6 Months Ended 9 Months Ended
Jun. 30, 2013
Sep. 30, 2013
Segment Reporting [Abstract]    
Schedule of Segment Reporting Information, by Segment [Table Text Block]  
   
Three Months Ended September 30,
   
Nine Months Ended September 30,
 
   
2013
   
2012
   
2013
   
2012
 
Orthobiologics
  $ 12,830,566     $ 9,242,783     $ 40,620,339     $ 30,262,991  
Dermal
    267,766       376,251       1,066,409       1,033,302  
Surgical
    1,136,248       1,426,273       3,955,134       3,874,405  
Ophthalmic
    1,425,609       1,891,433       2,818,407       8,515,160  
Veterinary
    1,363,157       1,118,700       3,124,953       2,865,187  
Product revenue
  $ 17,023,346     $ 14,055,440     $ 51,585,242     $ 46,551,045  
ScheduleOfRevenueAndOperatingIncomeByGeographicalAreas
   
Three Months Ended September 30,
 
   
2013
   
2012
 
   
Revenue
   
Percentage of
Revenue
   
Revenue
   
Percentage of
Revenue
 
Geographic Location:
                       
United States
  $ 14,485,821       82 %   $ 12,628,612       86 %
Europe
    1,656,656       9 %     1,064,165       7 %
Other
    1,611,961       9 %     1,073,834       7 %
Total revenue
  $ 17,754,438       100 %   $ 14,766,611       100 %
   
Nine Months Ended September 30,
 
   
2013
   
2012
 
   
Revenue
   
Percentage of
Revenue
   
Revenue
   
Percentage of
Revenue
 
Geographic Location:
                       
United States
  $ 42,251,336       78 %   $ 40,463,657       83 %
Europe
    5,226,619       10 %     3,993,708       8 %
Other
    6,351,871       12 %     4,294,675       9 %
Total revenue
  $ 53,829,826       100 %   $ 48,752,040       100 %