Stock-based compensation - Schedule of ESPP activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total proceeds (in thousands)	$ 5,156	$ 6,077	$ 6,840
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	378,988	433,121	295,189
Weighted-average purchase price (in dollars per share)	$ 13.60	$ 14.34	$ 22.80