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Commitments and contingencies (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Commitments And Contingencies [Line Items]
Bank guarantees and letters of credits, outstanding	$ 9,576	$ 10,014
Ministry of Finance, India
Commitments And Contingencies [Line Items]
Loss contingency, estimate of possible loss	102,153
Unrecognized tax benefits	0
Capital Addition Purchase Commitments
Commitments And Contingencies [Line Items]
Commitments and contingencies	$ 19,783	$ 25,309

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- Definition

Commitments And Contingencies [Line Items]

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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Amount of unrecognized tax benefits.

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