Represents the number of shares held as a percentage of the total shares outstanding at the end of the period.

No definition available.

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- Definition

Number of Management Agreements

+ References

No definition available.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

Balance held at close of period in number of shares.

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- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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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

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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- Definition

Cumulative number of shares issued or sold by the subsidiary or equity method investee on all stock transactions.

+ References

No definition available.

+ Details

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Related Person Transactions (Details) $ / shares in Units, $ in Thousands		9 Months Ended
	Jul. 01, 2019 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) agreement shares	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Related person transactions
Proceeds from sale of RMR Inc. common shares, net		$ 98,557	$ 0
RMR Inc \| Class A common shares
Related person transactions
Number of management agreements \| agreement		2
Proceeds from sale of RMR Inc. common shares, net	$ 98,557
Five Star
Related person transactions
Equity securities investment (in shares) \| shares		423,500
Investment owned, percentage of total shares outstanding		8.30%
AIC
Related person transactions
Equity method investments		$ 9,340		$ 8,632
RMR LLC \| Five Star
Related person transactions
Investment owned, percentage of total shares outstanding		35.40%
Class A common shares \| RMR Inc
Related person transactions
Shares sold (in shares) \| shares	2,637,408
Sale of stock, price per share (in dollars per share) \| $ / shares	$ 40.00