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Income tax (Summary of Income Tax Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Income tax [Abstract] |  |  |
Profit (Loss) before tax | $ 128,398 | $ (185,087) | $ 169,519
Tax losses from non-taxable jurisdictions | 91,351 | 53,652 | 49,360
Taxable profit | 219,749 | (131,435) | 218,879
Income tax calculated at domestic tax rates applicable to Profit in the respective countries | (71,086) | 12,450 | (79,395)
Tax losses where no deferred tax benefit is recognized | (7,510) | (23,117) | (2,563)
Effect of currency translation on tax base | (10,354) | (923) | (16,795)
Effect of inflation adjustment for tax purposes | 2,482 | (867) | 541
Changes in the income tax rate (Note 16) | (1,703) | (925) | 1,279
Write-down of deferred tax benefits previously recognized (a) | (7,261) | (32,565) |
Previously unrecognized tax losses | 9,593 | 0 | 1,820
Fiscal recognition of property, plant and equipment | 8,919 |  |
Out of period adjustment (b) |  |  | (9,910)
Non-taxable results (c) | 9,649 | (1,916) | (6,739)
Income tax | $ (67,271) | $ (47,863) | $ (111,762)

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