Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Institution	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Summary of Significant Accounting Policies
Number of financial institutions | Institution			2
Other current liability					$ 435
Uncertain tax positions	$ 0		$ 0		$ 0
Tax expense (benefit)	$ 0	$ 0	$ 0	$ 0