Leases - Additional Information (Details)					12 Months Ended
	Aug. 31, 2021	Apr. 13, 2020	Oct. 15, 2019 USD ($) ft²	Mar. 12, 2019 USD ($) ft²	Dec. 31, 2021 USD ($) ft²	Dec. 31, 2020 USD ($)	Apr. 07, 2020 USD ($) ft²	Jan. 30, 2018 USD ($) ft²
Operating Lease, Payments					$ 1,300,000
Operating Lease Impairment Loss					600,000
Operating Lease Residual Value Of Leased Asset					1,400,000
Other Asset Impairment Charges					$ 100,000
Discounted Risk-adjusted Rate					10.00%
Operating lease expiration month and year		2027-02	2027-02
Operating Lease, Right-of-Use Asset					$ 4,420,000	$ 4,650,000
Operating Lease, Liability					5,247,000
Recognition in exchange of Operating Lease Liabilities					1,400,000
Boston, MA
Security Deposit					$ 100,000	$ 100,000
Sublease term amendment					Aug. 31, 2026
Operating lease expiration month and year	2026-08				2016-08
Houston, TX
Operating Lease Monthly Rental Payment				$ 2,000
Operating lease expiration month and year				2021-04
Operating Leases Future Minimum Monthly Payment Due Through Year 2021			$ 17,000		$ 37,000,000		$ 12,000,000	$ 1,000
Operating Lease Area | ft²			8,443	1,038	32,148		5,594	210
Annual base rent increase		3.00%	3.00%		3.00%