Share-based compensation - Schedule of fair values of PSUs granted using the Black-Scholes option pricing model (Details) - RSUs [Member]	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Share-based compensation - Schedule of fair values of PSUs granted using the Black-Scholes option pricing model (Details) [Line Items]
Outstanding	97,600	32,690
Granted		60,000
Converted to common shares	(96,000)	(92,690)
Outstanding	1,600	0

The number of share options outstanding in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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+ Details