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Indebtedness - Schedule of Secured and Other Debt (Details) $ in Thousands	Dec. 31, 2021 USD ($) property	Dec. 31, 2020 USD ($)
Debt Instrument
Principal Balance	$ 69,713	$ 691,573
Net book value of collateral	5,075,749	5,715,829
Unamortized discount (premium) and debt issuance costs, net	3,676,524
Secured Debt
Debt Instrument
Principal Balance	$ 69,135	692,294
Number of Properties as Collateral | property	8
Net book value of collateral	$ 118,342	822,153
Secured Debt | Mortgage notes 6.28% maturing July 2022
Debt Instrument
Principal Balance	$ 11,120	11,838
Interest rate (as a percent)	6.28%
Number of Properties as Collateral | property	1
Net book value of collateral	$ 23,525	23,500
Secured Debt | Mortgage notes 4.85% maturing October 2022
Debt Instrument
Principal Balance	$ 10,479	10,724
Interest rate (as a percent)	4.85%
Number of Properties as Collateral | property	1
Net book value of collateral	$ 19,211	19,675
Secured Debt | Mortgage notes 5.75% maturing October 2022
Debt Instrument
Principal Balance	$ 15,456	15,805
Interest rate (as a percent)	5.75%
Number of Properties as Collateral | property	2
Net book value of collateral	$ 19,099	19,180
Secured Debt | Mortgage notes 6.64% maturing June 2023
Debt Instrument
Principal Balance	$ 15,204	15,646
Interest rate (as a percent)	6.64%
Number of Properties as Collateral | property	1
Net book value of collateral	$ 24,593	23,023
Secured Debt | Mortgage notes 3.53% maturing in August 2026
Debt Instrument
Principal Balance	$ 0	620,000
Interest rate (as a percent)	3.53%
Number of Properties as Collateral | property	0
Net book value of collateral	$ 0	705,096
Secured Debt | Mortgage notes 4.44% maturing July 2043
Debt Instrument
Principal Balance	$ 10,240	10,470
Interest rate (as a percent)	4.44%
Number of Properties as Collateral | property	1
Net book value of collateral	$ 13,387	13,582
Secured Debt | Capital leases 7.70% maturing in April 2026
Debt Instrument
Principal Balance	$ 6,636	7,811
Interest rate (as a percent)	7.70%
Number of Properties as Collateral | property	2
Net book value of collateral	$ 18,527	18,097
Secured Debt | Mortgage notes 7.49% maturing in January 2022
Debt Instrument
Unamortized discount (premium) and debt issuance costs, net	$ (578)	$ 721
Joint Venture | Secured Debt | Mortgage notes 3.53% maturing in August 2026
Debt Instrument
Ownership interest by parent	20.00%

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower and amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Contractual interest rate for funds borrowed, under the debt agreement.

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