XML 93 R117.htm IDEA: XBRL DOCUMENT v3.20.1
Share capital - Summary of Share Capital (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Number of Shares    
Shares issued upon exercise of share options, for cash (in shares) 56,644  
Shares issued to the public (in shares) 6,104,958  
Total    
Balance beginning of year $ 3,347,086  
Balance end of year $ 3,473,813 $ 3,347,086
Voting common shares    
Number of Shares    
Beginning balance (in shares) 158,801,722 158,801,722,000
Ending balance (in shares) 164,963,324 158,801,722
Share capital    
Total    
Balance beginning of year $ 3,007,924 $ 3,007,924
Shares issued upon exercise of share options, for cash 265 0
Estimated fair value of share options exercised transferred from contributed surplus 103  
Increase (decrease) through shares issued to the public, net of share issuance costs 48,041  
Share issuance cost (1,770)  
Balance end of year $ 3,054,563 $ 3,007,924