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Property and Equipment (Tables)
3 Months Ended
Mar. 31, 2014
Property Plant And Equipment [Abstract]  
Summary of Property and Equipment

Property and equipment consists of the following:

 

     March 31,
2014
     December 31,
2013
 

Equipment

   $ 9,805       $ 9,577   

Furniture and fixtures

     378         378   

Leasehold improvements

     13,115         13,115   
  

 

 

    

 

 

 

Total property and equipment

     23,298         23,070   

Less accumulated depreciation

     17,977         17,669   
  

 

 

    

 

 

 

Property and equipment, net

   $ 5,321       $ 5,401