Area Of Real Estate Property, Percentage Upon Completion Of Re-Development

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- Definition

Lessor, Operating Lease, Lease Not yet Commenced, Annual Base Rent

+ References

No definition available.

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- Definition

Lessor, Operating Lease, Lease Not yet Commenced, Annual Base Rent Increase Period

+ References

No definition available.

+ Details

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- Definition

Lessor, Operating Lease, Lease Not yet Commenced, Annual Percentage Increase

+ References

No definition available.

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- Definition

Lessor, Operating Lease, Lease Not yet Commenced, Deferred Payment Plan Period

+ References

No definition available.

+ Details

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- Definition

Lessor, Operating Lease, Lease Not yet Commenced, Number Of Renewal Options

+ References

No definition available.

+ Details

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- Definition

Represents the number of agreements with RMR LLC to provide management services to the company.

+ References

No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 25
-Paragraph 23
-Publisher FASB
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- Definition

Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479773/842-30-50-5

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Period Type:	duration

- Definition

Term of lessor's operating lease renewal for lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
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- Definition

Term of lessor's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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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
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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-Topic 718
-SubTopic 10
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-Section 50
-Paragraph 2
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- Definition

Percentage of vesting of award under share-based payment arrangement.

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- Definition

Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

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Related Person Transactions (Details) $ in Thousands	1 Months Ended	12 Months Ended
Related Person Transactions (Details) $ in Thousands	Jun. 30, 2021 USD ($) ft² renewal_option	Dec. 31, 2023 USD ($) agreement	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) ft²
Related Party Transaction [Line Items]
Rental income		$ 533,553	$ 554,275	$ 576,482
Rentable square feet (in square feet) \| ft²				926,000
Acquisition and transaction related costs		31,816	292	$ 0
Diversified Health Trust
Related Party Transaction [Line Items]
Acquisition and transaction related costs		$ 31,491
Officers and Other Employees \| Common Shares \| 2009 Award Plan
Related Party Transaction [Line Items]
Award vesting period		4 years
Share-based Payment Arrangement, Tranche 1 \| Officers and Other Employees \| Common Shares \| 2009 Award Plan
Related Party Transaction [Line Items]
Award vesting rights, percentage		20.00%
Share-based Payment Arrangement, Tranche 2 \| Officers and Other Employees \| Common Shares \| 2009 Award Plan
Related Party Transaction [Line Items]
Award vesting rights, percentage		20.00%
Share-based Payment Arrangement, Tranche 3 \| Officers and Other Employees \| Common Shares \| 2009 Award Plan
Related Party Transaction [Line Items]
Award vesting rights, percentage		20.00%
Share-based Compensation Award, Tranche 4 \| Officers and Other Employees \| Common Shares \| 2009 Award Plan
Related Party Transaction [Line Items]
Award vesting rights, percentage		20.00%
Share-based Compensation Award, Tranche 5 \| Officers and Other Employees \| Common Shares \| 2009 Award Plan
Related Party Transaction [Line Items]
Award vesting rights, percentage		20.00%
Related Party \| RMR LLC
Related Party Transaction [Line Items]
Number of agreements with RMR LLC to provide management services \| agreement		2
Rental income		$ 851	$ 1,126	$ 1,138
Related Party \| Sonesta International Hotels Corporation
Related Party Transaction [Line Items]
Lease term	30 years
Rentable square feet (in square feet) \| ft²	230,000
Percentage upon completion of redevelopment	55.00%
Number of renewal options \| renewal_option	2
Renewal term	10 years
Annual base rent	$ 6,436
Deferred payment plan period	18 months
Annual percentage increase	10.00%
Annual base rent increase	5 years
Tenant improvements		$ 66,000