Stockholders' equity - Schedule of Weighted Average Assumptions, Options (Details) - Contingently issuable shares under ESPP		12 Months Ended
	Aug. 06, 2022	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate (as percent)	3.00%	3.90%	4.60%	4.60%
Expected volatility (as percent)	68.60%	55.50%	50.60%	68.60%
Expected life (in years)	4 years 10 months 24 days	1 year 3 months 18 days	1 year 3 months 18 days	1 year 7 months 6 days
Expected dividend yield (as percent)	0.00%	0.00%	0.00%	0.00%