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Consolidated Statement of Changes in Equity
$ in Thousands
USD ($)
shares
Share capital
USD ($)
shares
Contributed surplus
USD ($)
Accumulated deficit
USD ($)
Foreign currency reserve
USD ($)
DSUs
USD ($)
DSUs
Share capital
USD ($)
shares
DSUs
Contributed surplus
USD ($)
RSUs
USD ($)
shares
RSUs
Share capital
USD ($)
shares
RSUs
Contributed surplus
USD ($)
Equity (in shares) | shares   234,514,326                  
Equity at Dec. 31, 2019 $ 250,263 $ 1,182,660 $ 290,640 $ (1,223,850) $ 813            
Net loss (51,377)     (51,377)              
Equity offering (in shares) | shares   45,557,548                  
Equity offerings (note 21) $ 694,608 $ 694,608                  
Redeemed/exercised (in shares) | shares 1,693,466 1,693,466         7,608   305,229 305,229  
Redeemed/exercised $ 4,438 $ 6,820 (2,382)     $ (64) $ 14 $ (78) $ (3,023) $ 633 $ (3,656)
Share-based compensation (note 21) 6,237   6,237     64     $ 3,023    
Other comprehensive income (loss):                      
Defined benefit plan actuarial gain (loss) (289)     (289)              
Foreign currency translation for foreign operations 94       94            
Equity (in shares) at Dec. 31, 2020 | shares   282,078,177                  
Equity at Dec. 31, 2020 900,887 $ 1,884,735 290,761 (1,275,516) 907            
Equity (in shares) | shares   282,078,177                  
Net loss (114,233)     (114,233)              
Deferred share consideration related to acquisition (note 7) 4,851   4,851                
Equity offering (in shares) | shares   14,870,000                  
Equity offerings (note 21) $ 527,291 $ 527,291                  
Redeemed/exercised (in shares) | shares 549,281 549,281         46,388   156,449 156,449  
Redeemed/exercised $ 2,415 $ 3,526 (1,111)     (1,290) $ 127 $ (1,417) $ (4,357) $ 577 $ (4,934)
Share-based compensation (note 21) 9,669   9,669     $ 1,290     $ 4,357    
Other comprehensive income (loss):                      
Defined benefit plan actuarial gain (loss) 2,170     2,170              
Foreign currency translation for foreign operations 814       814            
Equity (in shares) at Dec. 31, 2021 | shares   297,700,295                  
Equity at Dec. 31, 2021 $ 1,328,217 $ 2,416,256 $ 297,819 $ (1,387,579) $ 1,721            
Equity (in shares) | shares   297,700,295