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Other Assets (Tables)
12 Months Ended
Dec. 31, 2012
Other Assets [Abstract]  
Summary of other assets, non-current

Other assets, non-current at December 31 are summarized below:

 

                 
    2012     2011  

Prepaid royalties

  $ 614,488     $ 698,922  

Security deposit (buildings and equipment lease)

    332,813       1,157,135  
   

 

 

   

 

 

 

Total other non-current assets

  $ 947,301     $ 1,856,057