Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Short term investments - (Details)

v3.19.1
Short term investments - (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
year
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Investment [Line Items]      
Financial assets at fair value $ 7,856    
Financial assets at amortised cost 7,889    
Short term investments (note 5) $ 7,889 $ 7,833 $ 0
Weighted average      
Investment [Line Items]      
Investments, average term of contract | year 1.69    
Investment interest rate 1.64%    
Canadian Imperial Bank of Commerce      
Investment [Line Items]      
Financial assets at fair value $ 3,902 0  
Financial assets at amortised cost 3,912    
Short term investments (note 5) 0 3,888  
Royal Bank of Canada      
Investment [Line Items]      
Financial assets at fair value 3,955 0  
Financial assets at amortised cost 3,977    
Short term investments (note 5) $ 0 $ 3,945