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Investments in Available for Sale Securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Sep. 30, 2017
The RMR Group Inc
Unrealized gain on investments
Amount of investment acquired			$ 69,826
Fair value of the investments in available for sale securities			135,431
Unrealized gain			$ 65,605
Weighted average costs (in dollars per share)			$ 51.35
The RMR Group Inc | Class A common shares
Unrealized gain on investments
Investment in common shares (in shares)			2,637,408
Five Star
Unrealized gain on investments
Investment in common shares (in shares)			4,235,000
Amount of investment acquired			$ 6,353
Fair value of the investments in available for sale securities			6,564
Unrealized gain			$ 211
Weighted average costs (in dollars per share)		$ 1.50	$ 1.55
Loss on impairment	$ 5,082

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- Definition

Amount of accumulated unrealized gain before deducting unrealized loss on investments in available-for-sale securities impacting investments.

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Represents the weighted average cost per common share of investments on the date of acquisition.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
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Original amount of cost-method investments at the acquisition date.

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Balance held at close of period in number of shares.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
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