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

Share capital - Disclosure of shares issued (Details)

v3.19.3.a.u2
Share capital - Disclosure of shares issued (Details) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of issued capital [Abstract]    
Equity, opening balance $ 112,575 $ 165,821
Issue of common shares 236,747  
Exercise of derivative warrants 40,507 3,071
Exercise of stock options 13,748 943
Equity, closing balance $ 273,516 $ 112,575
Common shares    
Reconciliation of number of shares issued [Abstract]    
Number of shares issued, opening balance (in shares) 85,500 84,052
Issued pursuant to exercise of warrants (in shares) 2,983 1,172
Issued pursuant to exercise of stock options (in shares) 3,580 276
Number of shares issued, closing balance (in shares) 111,798 85,500
Reconciliation of issued capital [Abstract]    
Equity, opening balance $ 504,650 $ 499,200
Issue of common shares 236,747  
Exercise of derivative warrants 40,507 3,977
Exercise of stock options 22,197 1,473
Equity, closing balance $ 790,472 $ 504,650
Common shares | Public Offering    
Reconciliation of number of shares issued [Abstract]    
Number of shares issued during period (in shares) 12,782  
Reconciliation of issued capital [Abstract]    
Issue of common shares $ 179,918  
Common shares | ATM Facility    
Reconciliation of number of shares issued [Abstract]    
Number of shares issued during period (in shares) 6,953  
Reconciliation of issued capital [Abstract]    
Issue of common shares $ 43,200