Stockholders' Equity - Common stock (Details) - shares	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Common stock
Common stock voting rights	The holders of the common stock are entitled to one vote for each share held.
Number of shares reserved for future issuance (in shares)	11,524,655	9,199,512
Share-based payments | Stock options
Common stock
Number of shares reserved for future issuance (in shares)	10,028,741	8,342,429
Share-based payments | Restricted stock units
Common stock
Number of shares reserved for future issuance (in shares)	1,456,440	817,609
Warrants
Common stock
Number of shares reserved for future issuance (in shares)	39,474	39,474