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Receivables and Other Current Assets (Tables)
 3 Months Ended
Mar. 31, 2019
Trade and other current receivables [abstract]  
Schedule of Receivables and Other Current Assets

A summary of the receivables and other current assets as of March 31, 2019 is detailed in the table below:

 

    March 31, 2019     December 31, 2018  
Sales taxes receivable     52       75  
Interest receivable     17       10  
Other current assets     68       48  
      137       133