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Other liabilities
 9 Months Ended
Sep. 30, 2018
Other Liabilities Disclosure [Abstract]  
Other liabilities

5. Other liabilities

 

(in thousands)    SEPTEMBER 30,
2018		      DECEMBER 31,
2017		  

Capital lease obligations

    $ 10      $ 33  

Deferred rent liability

      333        453  
  

 

 

     

 

 

  
   $ 343      $ 486