Deferred Gain

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- Definition

Deferred Gain To Be Recognized In Future Periods, Gain Recognized, Thereafter

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- Definition

Deferred Gain To Be Recognized In Future Periods, Gain Recognized, Year Five

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- Definition

Deferred Gain To Be Recognized In Future Periods, Gain Recognized, Year Four

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- Definition

Deferred Gain To Be Recognized In Future Periods, Gain Recognized, Year One

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- Definition

Deferred Gain To Be Recognized In Future Periods, Gain Recognized, Year Three

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- Definition

Deferred Gain To Be Recognized In Future Periods, Gain Recognized, Year Two

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- Definition

Represents the service agreements entered into by the entity for availing services from other entities.

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No definition available.

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- Definition

Represents the amount of amortization of the liability recorded during the period.

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- Definition

Sale Of Interest In Subsidiary, Per Share

+ References

No definition available.

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- Definition

For investments which are quantified by principal amount, the principle balance held at close of period.

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- Definition

Balance held at close of period in number of shares.

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- Definition

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

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- Definition

The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent).

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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.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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

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Related Person Transactions - Management Agreements (Details) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Jul. 01, 2019 USD ($) $ / shares	Dec. 31, 2019 USD ($) retail_property agreement	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) retail_property agreement	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 05, 2015 USD ($) shares
Related Party Transaction [Line Items]
Number of properties \| retail_property		816								816
Revenues		$ 580,906	$ 599,772	$ 610,562	$ 524,908	$ 550,799	$ 603,153	$ 611,951	$ 528,633	$ 2,316,148	$ 2,294,536	$ 2,171,935
First Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting percentage										20.00%
Second Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting percentage										20.00%
Third Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting percentage										20.00%
Fourth Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting percentage										20.00%
Fifth Anniversary Vesting Percentage
Related Party Transaction [Line Items]
Vesting percentage										20.00%
Rental income
Related Party Transaction [Line Items]
Revenues										$ 322,236	330,806	326,436
RMR LLC \| Rental income
Related Party Transaction [Line Items]
Revenues										35	35	35
RMR LLC \| RMR Inc.
Related Party Transaction [Line Items]
Cash and share consideration													$ 55,922
Recognized amortization of liability										3,585	$ 3,585	$ 3,585
Remaining unamortized amount of liability		57,421								57,421
Future amortization of liability, 2020		3,585								3,585
Future amortization of liability, 2021		3,585								3,585
Future amortization of liability, 2022		3,585								3,585
Future amortization of liability, 2023		3,585								3,585
Future amortization of liability, 2024		3,585								3,585
Future amortization of liability, thereafter		$ 39,496								$ 39,496
Amended and restated business management agreement \| RMR LLC
Related Party Transaction [Line Items]
Number of management agreements \| agreement		2								2
Class A common shares \| RMR Inc.
Related Party Transaction [Line Items]
Public offering price (in dollars per share) \| $ / shares	$ 40.00
Proceeds from sale	$ 93,568
Class A common shares \| RMR LLC \| RMR Inc.
Related Party Transaction [Line Items]
Number of common shares owned (in shares) \| shares													2,503,777