Restructuring - Additional Information (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	May 31, 2020 Employee
Restructuring Cost And Reserve [Line Items]
Termination of full-time employees | Employee						45
Restructuring charges		$ 554	$ 2,919		$ 3,473
Retention cost		$ 400	1,600
First Payment Upon Execution of Retention Agreement
Restructuring Cost And Reserve [Line Items]
Retention cost			$ 700
Second Payment Upon Closing of Series D Financing
Restructuring Cost And Reserve [Line Items]
Retention cost	$ 400
Third Payment Upon Execution of Retention Agreement
Restructuring Cost And Reserve [Line Items]
Retention cost				$ 500