Commitments and Contingencies - Additional Information (Details)		3 Months Ended		9 Months Ended
	Jan. 01, 2019 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) item	Sep. 30, 2020 USD ($)
Number of operating lease for facilities | item				1
Renewed lease term		63 months		63 months
Lease rent abatement period		3 months		3 months
Rate of interest of funds borrowed by company		8.5		8.5
Operating Lease, Cost		$ 77,000	$ 50,000	$ 195,000	$ 151,000
Operating Lease, Payments		$ 80,000	$ 77,000	240,000	231,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability				$ 1,270,000	$ 0
ASU 2016-02
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 538,000