Represents the amount of additional purchase consideration related to acquisition of senior living community.

No definition available.

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- Definition

The cumulative amount of write-downs for impairments recognized during the period for long-lived assets held for sale.

+ References

No definition available.

+ Details

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- Definition

The number of additional buildings owned by the entity, which are classified as held for sale as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

The number of buildings owned by the entity, which are classified as held for sale as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

This element represents the number of properties acquired or agreed to be acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Definition

Represents the number of public issues of unsecured senior notes.

+ References

No definition available.

+ Details

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- Definition

The number of real estate additional properties owned by the entity, which are classified as held for sale as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

The number of real estate properties owned by the entity, which are classified as held for sale as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

This element represents the aggregate purchase price excluding closing costs, of real estate properties acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Definition

Represents the other liabilities recorded related to real estate property acquisitions.

+ References

No definition available.

+ Details

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- Definition

The amount by which the fair value of secured debt exceeds the book value.

+ References

No definition available.

+ Details

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- Definition

The amount by which the fair value of senior notes exceeds the book value.

+ References

No definition available.

+ Details

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- Definition

Amount of assets held-for-sale that are not part of a disposal group.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 15

-Paragraph 4

-Subparagraph (b)(2)

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- Definition

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

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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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-SubTopic 10

-Section 45

-Paragraph 1

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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

Balance held at close of period in number of shares.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 320

-Section S99

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-12.Column B)

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- Definition

Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

+ References

+ Details

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 210

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-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a))

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Details

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Fair Value of Assets and Liabilities (Details) $ in Thousands	1 Months Ended	9 Months Ended
	May. 31, 2015 USD ($) property	Sep. 30, 2015 USD ($) property building item shares	Apr. 30, 2015 shares	Dec. 31, 2014 USD ($)
Assets and liabilities measured at fair value
Number of properties classified as held for sale \| property		1
Number of buildings classified as held for sale \| building		1
Cumulative impairments of properties held for sale		$ 2,283
Carrying value of assets held for sale		$ 4,703
Number of additional properties classified as held for sale \| property		1
Number of additional buildings classified as held for sale \| building		1
Number of public issues of unsecured senior notes \| item		6
Senior notes		$ 1,744,694		$ 1,743,628
Excess of fair value over aggregate book value		66,116
Secured Debt		723,170
Excess of fair value over aggregate book value		$ 60,036
CommonWealth REIT (EQC)
Assets and liabilities measured at fair value
Investment in common shares \| shares			250,000
Five Star
Assets and liabilities measured at fair value
Investment in common shares \| shares		4,235,000
Acquisition
Assets and liabilities measured at fair value
Number of properties acquired \| property		23
Significant Unobservable Inputs (Level 3) \| Acquisition \| Senior Living Leased Community
Assets and liabilities measured at fair value
Other liabilities recorded	$ 1,000
Significant Unobservable Inputs (Level 3) \| Acquisition \| Senior Living Leased Community \| Georgia
Assets and liabilities measured at fair value
Number of properties acquired \| property	1
Real Estate Aggregate Purchase Price	$ 9,750
Nonrecurring
Assets and liabilities measured at fair value
Assets held for sale		$ 374
Additional purchase consideration		1,000
Nonrecurring \| Significant Unobservable Inputs (Level 3)
Assets and liabilities measured at fair value
Assets held for sale		374
Additional purchase consideration		1,000
Recurring
Assets and liabilities measured at fair value
Investments in available for sale securities		13,086
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets and liabilities measured at fair value
Investments in available for sale securities		$ 13,086