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Prepaid Expenses and Other Current Assets
12 Months Ended
Dec. 31, 2014
Prepaid Expense and Other Assets, Current [Abstract]  
Prepaid Expenses and Other Current Assets
6. Prepaid Expenses and Other Current Assets

 

The following is a summary of prepaid expenses and other current assets at December 31, 2013 and 2014 (in $000s):

 

    December 31,  
    2013     2014  
             
Research and development tax credit receivable   $ 1,744     $ 3,017  
Prepayments     427       902  
Grant receivable     357       134  
Sales tax receivable     209       309  
Deposits     132       132  
Other current assets     519       146  
    $ 3,388     $ 4,640