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Share-based compensation - Summary of the activity for stock options issued under the Company's Plans (Details) - Stock Option Plan - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Shares
Outstanding at beginning of period	2,647,435	2,390,150
-Cancelled	(9,726)	(48,268)
-Exercised	(34,902)	(296,973)
-Granted	133,371	602,526
Outstanding at end of period	2,736,178	2,647,435
Weighted Average Exercise Price
Outstanding at beginning of period	$ 3.31	$ 1.51
-Cancelled	4.27	5.67
-Exercised	7.63	2.68
-Granted	10.85	10.02
Outstanding at end of period	$ 3.63	$ 3.31

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(03)
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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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

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