Stock-based compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Number of Options
Outstanding (in shares)	3,831,710
Granted (in shares)	0	0
Exercised (in shares)	(201,779)
Cancelled/Forfeited (in shares)	(69,787)
Outstanding (in shares)	3,560,144	3,831,710
Options exercisable (in shares)	3,152,414
Options vested and expected to vest (in shares)	3,560,144
Weighted- Average Exercise Price
Outstanding (in usd per share)	$ 6.97
Granted (in usd per share)	0
Exercised (in usd per share)	4.05
Cancelled (in usd per share)	8.85
Outstanding (in usd per share)	7.09	$ 6.97
Options exercisable (in usd per share)	7.00
Options vested and expected to vest (in usd per share)	$ 7.09
Weighted- Average Remaining Contractual Term (Years)
Outstanding	4 years 10 months 24 days	5 years 9 months 18 days
Exercisable	4 years 7 months 6 days
Vested and expected to vest	4 years 10 months 24 days
Aggregate Intrinsic Value (in thousands)
Outstanding	$ 0	$ 826
Exercisable	0
Vested and expected to vest	$ 0

Share-Based Compensation Arrangement By Share-based Payment Award, Aggregate Intrinsic Value

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Share-Based Compensation Arrangement By Share-based Payment Award, Weighted Average Remaining Contractual Term

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No definition available.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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-Topic 718
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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of share options (or share units) exercised during the current period.

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-Name Accounting Standards Codification
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