Insured Event, Deductible

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- Definition

Insured Event, Gain (Loss), Including Deductible

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No definition available.

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- Definition

Insured Event, Proceeds In Excess Of Loss, Liability

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No definition available.

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- Definition

Amount of committed but unspent tenant related obligations based on executed lease.

+ References

No definition available.

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- Definition

Represents the amount of expenditure committed by entity relating to leases.

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No definition available.

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- Definition

Number Of Real Estate Properties Held For Sale

+ References

No definition available.

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- Definition

Number Of Third Party Institutional Investors

+ References

No definition available.

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- Definition

Percentage Of Equity Method Investment Sold

+ References

No definition available.

+ Details

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- Definition

Proceeds from Divestiture Of Interest In Joint Venture, Net

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

This element represents the aggregate sales price excluding closing costs, of real estate properties sold by the entity.

+ References

No definition available.

+ Details

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- Definition

Real Estate Property Fair Value

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Area of a real estate property.

+ References

No definition available.

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
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-Subparagraph (b)
-SubTopic 10
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-SubTopic 10
-Section 45
-Paragraph 4
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-URI https://asc.fasb.org//1943274/2147482130/360-10-45-4

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

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- Definition

Amount of gain (loss) on sale or disposal of other assets.

+ References

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- Definition

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
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- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
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-Paragraph 2
-Subparagraph (SX 210.5-03.3)
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- Definition

Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

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- Definition

The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 310
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- Definition

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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Real Estate Investments - Narrative (Details)	1 Months Ended			12 Months Ended
Real Estate Investments - Narrative (Details)	Jun. 30, 2022 USD ($)	Jan. 31, 2022 USD ($) investor	Dec. 31, 2021 USD ($) property	Dec. 31, 2023 USD ($) ft² property unit	Dec. 31, 2022 USD ($) ft² property	Dec. 31, 2021 USD ($) property	Mar. 31, 2017
Real Estate
Number of properties owned (property) \| property				371
Impairment of assets				$ 18,380,000	$ 0	$ (174,000)
Lease committed but unspent tenant related obligations				54,124,000	39,314,000
Hurricane damage, loss and deductible amount					11,253,000
Hurricane damage, loss					7,635,000
Proceeds from insurance recoveries				534,000	14,466,000	0
Hurricane damage, loss recovered					7,635,000
Hurricane damage, deductible amount					3,618,000
Hurricane damage, insurance proceeds in excess of loss, liability				534,000	3,213,000
Gain (loss) on sale of properties				1,205,000	321,862,000	492,272,000
Proceeds from sale of interest in joint venture, net				$ 0	$ 108,424,000	367,033,000
Seaport Innovation LLC
Real Estate
Aggregate property valuation amount			$ 1,700,000,000			1,700,000,000
Aggregate principal amount of mortgage debt			$ 620,000,000			$ 620,000,000
Corporate Joint Venture
Real Estate
Number of properties owned (property) \| property				11
Area of real estate properties (in square feet) \| ft²				2,203,242
Aggregate property valuation amount		$ 702,500,000
Aggregate principal amount of mortgage debt		456,600,000
Seaport Innovation LLC \| Corporate Joint Venture
Real Estate
Proceeds from sale of interest in joint venture, net	$ 108,000
Seaport Innovation LLC \| Corporate Joint Venture
Real Estate
Number of properties owned (property) \| property				1
Area of real estate properties (in square feet) \| ft²				1,134,479
Equity method investment ownership percentage	20.00%		20.00%	10.00%		20.00%	55.00%
Additional equity joint venture percentage	10.00%		35.00%
Proceeds from sale of interest in joint venture, net			$ 378,000
Seaport Innovation LLC \| Corporate Joint Venture \| Investor
Real Estate
Equity method investment ownership percentage							45.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate
Number of properties owned (property) \| property			5	8	0	5
Sale price of property sold and agreed to be sold				$ 18,880,000		$ 104,500,000
Medical Office Building and Life Science Building
Real Estate
Number of properties owned (property) \| property				102
Area of real estate properties (in square feet) \| ft²				8,600,000
Medical Office Building and Life Science Building \| Corporate Joint Venture
Real Estate
Proceeds from sale of interest in joint venture, net		$ 653,300,000
Number of third party institutional investors \| investor		2
Medical Office Building and Life Science Building \| Seaport Innovation LLC \| Corporate Joint Venture
Real Estate
Equity method investment ownership percentage	10.00%
Medical Office Building and Life Science Building \| Diversified Healthcare Trusts \| Corporate Joint Venture
Real Estate
Equity method investment ownership percentage		20.00%
Medical Office Building and Life Science Building \| Diversified Healthcare Trusts \| Corporate Joint Venture \| Unrelated Investor One
Real Estate
Equity method investment ownership percentage		41.00%
Medical Office Building and Life Science Building \| Diversified Healthcare Trusts \| Corporate Joint Venture \| Unrelated Investor Two
Real Estate
Equity method investment ownership percentage		39.00%
Medical Office Building and Life Science Building \| Capital Commitments
Real Estate
Area of real estate properties (in square feet) \| ft²				900,000	900,000
Leases committed expenditure				$ 62,180,000	$ 22,911,000
Senior Living Communities, Independent Living, Assisted Living, and Skilled Nursing Facility
Real Estate
Number of properties owned (property) \| property				259
Senior Living Communities
Real Estate
Number of units in real estate property \| unit				27,271
Senior Living Communities \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate
Number of real estate properties held for sale \| property				1	1
Welness Centers
Real Estate
Number of properties owned (property) \| property				10
Area of real estate properties (in square feet) \| ft²				812,000
Welness Centers \| Capital Commitments
Real Estate
Area of real estate properties (in square feet) \| ft²				200,000
Life Science And Medical Office And Senior Living Communities
Real Estate
Impairment of assets				$ 14,034,000
Life Science / Medical Office
Real Estate
Number of properties owned (property) \| property				4
Life Science / Medical Office \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate
Number of properties owned (property) \| property				3
Life Science / Medical Office \| Disposal Group, Held-for-sale, Not Discontinued Operations
Real Estate
Number of properties owned (property) \| property				1
Senior Living Communities
Real Estate
Number of properties owned (property) \| property				2
Impairment of assets				$ 4,346,000
Senior Living Communities \| Skilled Nursing Bed License
Real Estate
Gain (loss) on sale of properties		$ 322,468,000			$ (1,428,000)	$ 461,434,000
Senior Living Communities \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate
Number of properties owned (property) \| property				1
Skilled Nursing Bed Licenses
Real Estate
Gain on transaction				$ 940,000