Equity Method Investment, Number of Shares Owned

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- Definition

Related Party Transaction, Purchases From Related Party, Shares

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- Definition

Unrealized Gain (Loss) On Equity Method Investments, Fair Value Option

+ References

No definition available.

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- Definition

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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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.

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- Definition

Fair value portion of investments accounted under the equity method.

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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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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Summary of Significant Accounting Policies - Equity Method Investments (Details) - USD ($) $ in Thousands				12 Months Ended
	Sep. 30, 2020	Jul. 06, 2020	Oct. 10, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018	Jul. 01, 2020
Schedule of Equity Method Investments [Line Items]
Equity in earnings (losses) of investees				$ 1,545	$ 719	$ (578)
Distributions from equity method investments				736	549	174
Impairment loss on Tremont Mortgage Trust investment				0	6,213	4,359
Quoted market value	$ 12,152			12,152	3,682
Unrealized gain (loss) on investment, fair value option				$ 3,151	(4,700)	0
TA
Schedule of Equity Method Investments [Line Items]
Ownership percentage by noncontrolling owners	4.60%			4.60%
TA \| RMR LLC
Schedule of Equity Method Investments [Line Items]
Number of shares owned (in shares)	621,853			621,853
Ownership percentage	4.30%			4.30%
Share purchase from related party (in shares)	104,738	218,577	298,538
Ownership percentage by noncontrolling owners	4.30%			4.30%
Purchase from related party	$ 2,259	$ 3,060	$ 8,382
TRMT
Schedule of Equity Method Investments [Line Items]
Equity in earnings (losses) of investees				$ 1,545	719	(545)
Distributions from equity method investments				$ 736	549	0
Impairment loss on Tremont Mortgage Trust investment					6,213	4,359
TRMT \| Tremont Advisors
Schedule of Equity Method Investments [Line Items]
Number of shares owned (in shares)	1,600,100			1,600,100
Ownership percentage	19.30%			19.30%
Open End Fund
Schedule of Equity Method Investments [Line Items]
Ownership percentage							0.50%
Equity in earnings (losses) of investees				$ 0	$ 0	(33)
Distributions from equity method investments						$ 174