Financial instruments - Financial Obligations (Details) $ in Thousands	9 Months Ended
Sep. 30, 2025 USD ($)
Other Commitments [Line Items]
Carrying amount	$ 21,264
Contractual cash flows	22,638
Contractual obligation, due less than 1 year	20,549
Contractual obligation, due 1-3 years	1,674
Contractual obligation, due 4-5 years	415
Accounts payable and accrued liabilities
Other Commitments [Line Items]
Carrying amount	15,550
Contractual cash flows	15,550
Contractual obligation, due less than 1 year	15,550
Contractual obligation, due 1-3 years	0
Contractual obligation, due 4-5 years	0
Term loan facility (note 11)
Other Commitments [Line Items]
Carrying amount	3,903
Contractual cash flows	4,372
Contractual obligation, due less than 1 year	4,372
Contractual obligation, due 1-3 years	0
Contractual obligation, due 4-5 years	0
Operating lease obligations
Other Commitments [Line Items]
Carrying amount	1,811
Contractual cash flows	2,716
Contractual obligation, due less than 1 year	627
Contractual obligation, due 1-3 years	1,674
Contractual obligation, due 4-5 years	$ 415

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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- Definition

Amount of contractual obligation to be paid in fourth and fifth fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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- Definition

Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of contractual obligation to be paid in second and third fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Represents the amount of contractual cashflows obligation repayments.

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