Stock Based Compensation - Restricted stock units activity (Details) - Unvested restricted stock units - $ / shares	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Number of Shares
Outstanding, beginning balance (in shares)	1,951,924
Granted (in shares)	6,897,234
Vested (in shares)	(237,911)
Cancelled (in shares)	(1,165,104)
Outstanding, ending balance (in shares)	7,446,143
Grant Date Fair Value
Outstanding, beginning balance (in dollars per share)	$ 3.79	$ 6.76
Granted (in dollars per share)	3.32
Vested (in dollars per share)	6.96
Cancelled (in dollars per share)	5.37
Outstanding, ending balance (in dollars per share)	$ 3.79	$ 6.76