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Other income, net
 9 Months Ended
Sep. 30, 2017
Other Income and Expenses [Abstract]  
Other income, net

6. Other income, net

 

(in thousands)    THREE MONTHS ENDED
SEPTEMBER 30,		     NINE MONTHS ENDED
SEPTEMBER 30,		  
     2017     2016     2017     2016  

Change in fair value of derivative liability

    $ —       $ 8     $ —       $ 81  

Foreign exchange gain (losses)

      8       (1 )      (12 )      (21 ) 

Interest income

      236       142       720       391  

Miscellaneous expenses

      (7 )      (12 )      (36 )      (27 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  
   $ 237     $ 137     $ 672     $ 424