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Income Taxes - Components of income tax expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Current tax expense (recovery)    
Recognized in profit or loss in current year $ 85,325 $ 134,947
Change in current tax expense estimated for prior years (2,308) 147
Current tax expense (income) and adjustments for current tax of prior periods 83,017 135,094
Deferred tax expense (recovery)    
Deferred tax expense (recovery) recognized in the current year (34,184) 14,194
Adjustments recognized in the current year with respect to prior years 366 56
Derecognition of previously unrecognized deferred tax assets 9,065 0
Benefit from previously unrecognized losses, and other temporary differences 0 508
Impact of impairments on deferred tax assets and liabilities (3,825) 0
Decrease in deferred tax liabilities due to tax impact of NRV charge to inventory (15,321) (3,423)
Deferred tax expense (43,899) 11,335
Income taxes expense 39,118 146,429
Deferred tax assets and   liabilities $ (84,458) $ (128,832)