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Income taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2025
Effective Income Tax Rate Reconciliation [Line Items]
Income tax expense (benefit)	$ 126	$ 1	$ 140	$ 18
Effective income tax rate reconciliation, percent			(0.90%)
Tax expense (benefit), share-based payment arrangement, amount			$ (600)
Income tax rate, percent			21.00%
Operating loss carryforward	$ 57,900		$ 57,900
CANADA
Effective Income Tax Rate Reconciliation [Line Items]
Effective income tax rate reconciliation, percent			0.00%
Forecast
Effective Income Tax Rate Reconciliation [Line Items]
Income tax rate, without discrete items, percent					(0.90%)

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Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Without Discrete Items, Percent

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