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Unrealized Gain / Loss on Investments (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	May. 31, 2015	Jun. 30, 2015	Apr. 30, 2015
CommonWealth REIT (EQC)
Unrealized gain on investments
Investment in common shares			250,000
Proceeds from equity shares sold	$ 6,571
Realized gain on available for sale equity securities	$ 71
Five Star
Unrealized gain on investments
Investment in common shares		4,235,000
Quoted market prices (in dollars per share)		$ 4.80
Weighted average costs (in dollars per share)		$ 3.36

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Represents the quoted market price per common share of investments as of the balance sheet date.

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

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Balance held at close of period in number of shares.

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The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

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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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