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- Definition

Investment Owned Balance Per Shares

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Value of input used to measure investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Balance held at close of period in number of shares.

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- Definition

Fair value portion of investments in an entity not consolidated. Includes, but is not limited to, investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, an entity in which the reporting entity shares control of the entity with another party or group, an entity which the company has significant influence, but does not have control and subsidiaries that are not required to be consolidated and are accounted for using the equity or cost method.

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

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- Definition

Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Fair Value of Assets and Liabilities - Assets and Liabilities (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 02, 2023 $ / shares	Mar. 31, 2023 USD ($) property shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jun. 28, 2022	Dec. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Gains and losses on equity securities, net		$ 8,126	$ (8,553)
Impairment of assets		$ 5,925	$ 0
Number of properties (property) \| property		376
Senior Living Communities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Real estate properties at fair value		$ 3,500
Impairment of assets		$ 3,617
Number of properties (property) \| property		1
Medical Office Property
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Real estate properties at fair value		$ 2,500
Impairment of assets		$ 2,308
Number of properties (property) \| property		1
AlerisLife Inc
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investment owned balance per shares \| $ / shares	$ 1.31
Corporate Joint Venture
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Number of properties (property) \| property		11
Corporate Joint Venture \| Seaport Innovation LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Equity method investment ownership percentage		10.00%			20.00%	55.00%
Holding period		10 years
Number of properties (property) \| property		1
Corporate Joint Venture \| Seaport Innovation LLC \| Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input		0.0700
Corporate Joint Venture \| Seaport Innovation LLC \| Measurement Input, Market Capitalization Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input		0.0600
Corporate Joint Venture \| The LSMD Fund REIT LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Equity method investment ownership percentage		20.00%
Holding period		10 years
Number of properties (property) \| property		10
Corporate Joint Venture \| The LSMD Fund REIT LLC \| Measurement Input, Discount Rate \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input		0.0600
Corporate Joint Venture \| The LSMD Fund REIT LLC \| Measurement Input, Discount Rate \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input		0.0725
Corporate Joint Venture \| The LSMD Fund REIT LLC \| Measurement Input, Market Capitalization Rate \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input		0.0450
Corporate Joint Venture \| The LSMD Fund REIT LLC \| Measurement Input, Market Capitalization Rate \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input		0.0700
Recurring \| Level 1 \| Carrying Amount \| AlerisLife Inc
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investments in affiliates, fair value		$ 0		$ 5,880
Equity securities investment (in shares) \| shares		10,691,658
Recurring \| Level 1 \| Estimated Fair Value \| AlerisLife Inc
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investments in affiliates, fair value		$ 0		5,880
Recurring \| Level 3 \| Joint Venture \| Carrying Amount \| Seaport Innovation LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investments in affiliates, fair value		104,764		104,697
Recurring \| Level 3 \| Joint Venture \| Carrying Amount \| The LSMD Fund REIT LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investments in affiliates, fair value		48,655		50,780
Recurring \| Level 3 \| Joint Venture \| Estimated Fair Value \| Seaport Innovation LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investments in affiliates, fair value		104,764		104,697
Recurring \| Level 3 \| Joint Venture \| Estimated Fair Value \| The LSMD Fund REIT LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Investments in affiliates, fair value		48,655		$ 50,780
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Real estate properties at fair value		6,000
Fair Value, Nonrecurring [Member] \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Real estate properties at fair value		6,000
Fair Value, Nonrecurring [Member] \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Real estate properties at fair value		0
Fair Value, Nonrecurring [Member] \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Real estate properties at fair value		$ 0