XML 175 R119.htm IDEA: XBRL DOCUMENT v3.22.1
Income taxes - Summary of change in net deferred tax position (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Net deferred tax asset (liability)    
Deferred tax liability (asset) at end of period $ 439,195 $ 414,554
Deferred tax expense (recovery) 49,796 (6,214)
Deferred tax assets from acquisition of QMX Gold Corporation (14,122) 0
Deferred tax expense related to discontinued operations 0 5,040
Deferred tax impact on disposition of Tocantinzinho (11,010) 0
Deferred tax recovery in the consolidated statement of OCI (23) (563)
Deferred tax liability (asset) at beginning of period $ 414,554 $ 416,291