Stockholders' equity - Stock-based award plans (Details)	12 Months Ended
	Dec. 31, 2024 shares
2022 Plan
Stock-based compensation
Number of shares added (In shares)	0
Period of automatic increase in shares reserved	8 years
Percentage of the common shares outstanding (as a percent)	10.00%
Number of shares authorized	1,000,000
2022 Plan | Maximum
Stock-based compensation
Number of shares authorized	15,000,000
2019 Plan | Employee Stock Option | Maximum
Stock-based compensation
Expiration period	10 years