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Income taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Canadian enacted statutory rate (percent)	26.50%	26.50%
Valuation allowance for deferred tax assets	$ 281,894	$ 5,562	$ 5,876
Undistributed earnings of foreign subsidiaries	$ 1,042,117

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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