Income taxes - Schedule of Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal tax expense	21.00%	21.00%	21.00%
State taxes, net of federal benefit	2.18%	0.49%	0.50%
Foreign rate differential	3.16%	(0.28%)	(1.40%)
Withholding taxes		(2.43%)	(1.77%)
Nondeductible compensation	77.41%	(6.18%)	(10.20%)
Stock-based compensation		(9.48%)	(1.84%)
Change in valuation allowance	(76.43%)	(16.40%)	(18.33%)
Research and development credits	(22.97%)	7.57%	7.94%
Nontaxable dividends		0.00%	1.31%
Other	8.59%	0.34%	(0.73%)
Effective tax rate	54.34%	(5.37%)	(3.52%)