Restructurings - Schedule of Restructuring Charges (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 0	$ 0	$ (1,348,000)	$ 0
Research and Development
Restructuring Cost And Reserve [Line Items]
Restructuring charges			(1,625,000)
General and Administrative
Restructuring Cost And Reserve [Line Items]
Restructuring charges			$ 277,000