Stockholder's equity (deficit) (Details)	6 Months Ended
	Jun. 30, 2022 Vote $ / shares shares	Dec. 31, 2021 $ / shares shares
Class of Stock [Line Items]
Common stock, shares authorized	500,000,000	500,000,000
Common stock, par value | $ / shares	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, par value | $ / shares	$ 0.00001	$ 0.00001
Common stock, shares issued	37,766,655	37,424,101
Common stock, shares outstanding	37,766,655	37,424,101
Common stock, shares reserved for issuance upon the exercise of stock options	8,237,869	6,709,218
Class A Common Stock
Class of Stock [Line Items]
Common stock, voting rights (per share) | Vote	1