Subsequent Events (Additional Information) (Details)	1 Months Ended
	Dec. 31, 2017 ft²	Nov. 30, 2017 USD ($) ft²	Sep. 30, 2016	Jun. 30, 2022 USD ($)
Subsequent Event [Line Items]
Tenant improvement allowance		$ 6,300,000
Maximum
Subsequent Event [Line Items]
Tenant improvement allowance				$ 10,900,000
Bedford, Massachusetts
Subsequent Event [Line Items]
Office space leased | ft²	67,000	23,011
Operating lease beginning year and month			2016-11
Operating lease expiration year and month	2027-02	2027-02	2021-10
Percentage increase in initial annual base rent	3.00%	3.00%