Average Trading Price of the Company's Stock.

No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

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- References

No definition available.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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

Amount of the required periodic payments applied to interest.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Secured and Unsecured Debt of the Operating Partnership Secured and Unsecured Debt of the Operating Partnership - Exchangeable Senior Notes (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 15, 2014	Dec. 31, 2014	Nov. 30, 2014
Debt Disclosure [Abstract]
Debt instrument, face amount			$ 172,500
Debt Instrument [Line Items]
Average trading price of the Company's stock	$ 60.04
Convertible notes payable [Member]
Debt Instrument [Line Items]
Contractual interest payments		$ 5,608
Amortization of discount		3,769
Interest expense attributable to the 4.25% Exchangeable Notes		$ 9,377
Exchangeable debt [Member]
Debt Instrument [Line Items]
Stated interest rate			4.25%
Debt instrument, convertible, conversion price	$ 35.93