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Credit Facility (Tables)
 6 Months Ended
Jun. 30, 2014
Credit Facility  
Summary of carrying amount of outstanding debt

 

 

 
  
December 31,
2013
 

Revolving line of credit

   $ 5,000  

Debt discount, net of accumulated accretion

     (236 )
       
​ ​ ​ ​ ​

Total carrying value

   $ 4,764  
       
​ ​ ​ ​ ​
​ ​ ​ ​ ​