Subsequent Events (Additional Information) (Details)	1 Months Ended
	Nov. 30, 2021 USD ($) ft²	Dec. 31, 2017 ft²	Sep. 30, 2016	Sep. 30, 2021 USD ($)
Maximum
Subsequent Event [Line Items]
Tenant improvement allowance				$ 10,900,000
Bedford, Massachusetts
Subsequent Event [Line Items]
Office space leased | ft²		67,000
Operating lease beginning year and month			2016-11
Operating lease expiration year and month		2027-02	2021-12
Percentage increase in initial annual base rent		3.00%
Lease Amendment | Bedford, Massachusetts | Forecast
Subsequent Event [Line Items]
Office space leased | ft²	23,011
Operating lease beginning year and month	2027-02
Operating lease expiration year and month	2030-06
Lease Term	10 years 5 months
Annual base rent	$ 4,200,000
Annual base rent per year	$ 1,400,000
Percentage increase in initial annual base rent	3.00%
Lease Amendment | Bedford, Massachusetts | Maximum | Forecast
Subsequent Event [Line Items]
Tenant improvement allowance	$ 5,300,000