Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Institution	Dec. 31, 2020 USD ($)
Significant Accounting Policies [Line Items]
Number of financial institutions | Institution	2
Impairment losses on long-lived assets	$ 0	$ 0
Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Lease liability	$ 8,000,000
Lease, right-of-use asset	$ 6,000,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherAssets
Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Lease liability	$ 9,000,000
Lease, right-of-use asset	$ 7,000,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	us-gaap:OtherAssets