Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) Segment LetterOfCredit	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment	1
Number of letters of credit issued to landlord constituting restricted cash | LetterOfCredit	2
Number of operating segments | Segment	1
Restricted cash	$ 351,000	$ 216,000	$ 351,000
Impairment of long-lived assets	0	$ 0
Operating lease right-of-use assets	2,582,000		2,722,000
Lease liabilities	578,000		$ 565,000
Total annual gross revenues	1,070,000,000.00
Minimum
Summary Of Significant Accounting Policies [Line Items]
Issued nonconvertible debt	1,000,000,000.0
Market value of its stock held by non-affiliates	$ 700,000,000