Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021 USD ($) Segment	Dec. 31, 2020 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Impairment of long-lived assets	$ 0	$ 0
Disposal of long-lived assets	0	$ 0
Dividends, common stock, cash	$ 0
Number of reporting segment | Segment	1
Number of operating segment | Segment	1
Accounting Standards Update No. 2019-12 [Member]
Summary Of Significant Accounting Policies [Line Items]
Change In Accounting Principle Accounting Standards Update Adopted	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2021
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect	true
Computer Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Equipment and leasehold improvements, useful life	3 years
Furniture and Office Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Equipment and leasehold improvements, useful life	5 years