Organization, Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended		24 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Taxable income minimum distribution portion not subject to federal taxation (in percentage)	90.00%		90.00%
Real estate improvements	$ 14,900,000	$ 6,900,000
Acquisition costs	0	$ 0
Allowance for doubtful accounts receivable	$ 18,600,000		$ 18,600,000	$ 18,400,000
Lessor, Operating Lease, Lease Modification Deferral of Contractual Amounts Billed			11,200,000
Lessor, Operating Lease, Lease Modification Deferral of Contractual Amounts Billed, Amounts Rebilled			6,700,000
Lessor, Operating Lease, Lease Modification Deferral of Contractual Amounts Billed, Rebilled Amount Collected			$ 5,700,000
Lessor, Operating Lease, Lease Modification Deferral of Contractual Amounts Billed, Rebilled Percent Collected			85.60%
Number of segments | segment	1
Minimum | Building
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
PPE useful life (in years)	39 years
Minimum | Building Improvements
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
PPE useful life (in years)	10 years
Minimum | Furniture and Fixtures
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
PPE useful life (in years)	3 years
Maximum | Building
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
PPE useful life (in years)	40 years
Maximum | Building Improvements
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
PPE useful life (in years)	20 years
Maximum | Furniture and Fixtures
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
PPE useful life (in years)	10 years