Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021	Jan. 01, 2022
Summary Of Significant Accounting Policies [Line Items]
Impairments of long-lived assets	$ 200,000	$ 200,000	$ 0
Expected dividend yield		0.00%
Right-of-use assets	2,842,000	$ 2,842,000		$ 3,400,000
Operating lease liability	3,104,000	$ 3,104,000		$ 3,500,000
Leasehold Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Property, plant and equipment, useful life		amortized over the shorter of the lease term or the five-year estimated useful life of the asset
Computer Equipment and Computer Software
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		3 years
Minimum | Money Market Funds
Summary Of Significant Accounting Policies [Line Items]
Investment in assets	$ 1,000,000,000	$ 1,000,000,000
Minimum | Equipment and Furniture and Fixtures
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Maximum | Equipment and Furniture and Fixtures
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		7 years