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

No definition available.

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- Definition

Sale Of Interest In Subsidiary, Per Share

+ References

No definition available.

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- Definition

Balance held at close of period in number of shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 45
-Paragraph 12
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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

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Related Person Transactions - Management Agreements (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Jul. 01, 2019 USD ($) $ / shares	Dec. 31, 2020 agreement	Jun. 05, 2015 shares
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%
Amended and restated business management agreement \| RMR LLC
Related Party Transaction [Line Items]
Number of management agreements \| agreement		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