Stockholders' equity - Summary of Weighted Average Assumptions, Options (Details)		12 Months Ended
	Aug. 06, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	3.00%			1.00%
Expected volatility	68.60%			60.50%
Expected life (in years)	4 years 10 months 24 days			6 years
Expected dividend yield	0.00%			0.00%
Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate				1.50%
Expected volatility				60.90%
Expected life (in years)				6 years 2 months 12 days
Expected dividend yield				0.00%
Contingently issuable shares under ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate		4.60%	3.50%	0.30%
Expected volatility		68.60%	68.50%	61.20%
Expected life (in years)		1 year 7 months 6 days	1 year 2 months 12 days	1 year 2 months 12 days
Expected dividend yield		0.00%	0.00%	0.00%