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, 2023	Dec. 31, 2022
Shares
Outstanding at beginning of period	2,390,150	2,604,023
-Cancelled	(26,150)	(11,781)
-Exercised	(275,405)	(583,273)
-Granted	592,798	381,181
Outstanding at end of period	2,681,393	2,390,150
Weighted Average Exercise Price
Outstanding at beginning of period	$ 1.51	$ 1.03
-Cancelled	9.62	3.75
-Exercised	2.68	1.15
-Granted	10.02	4.33
Outstanding at end of period	$ 3.26	$ 1.51