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Mortgage Loans Payable And Credit Facility (Summary Of The Derivative Financial Instruments Held) (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($) contract	Dec. 31, 2014 USD ($) contract
Derivatives, Fair Value [Line Items]
Count | contract	4	2
Notional values	$ 250,000,000	$ 150,000,000
Fair value	$ 2,631,000	$ 2,777,000
Interest Rate Swap One [Member]
Derivatives, Fair Value [Line Items]
Maturity date		2019
Interest Rate Swap Two [Member]
Derivatives, Fair Value [Line Items]
Maturity date		2021
Minimum [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Maturity date	2019
Maximum [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Maturity date	2022

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+ References

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Nominal or face amount used to calculate payments on the derivative liability.

+ References

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 1B



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-Name Accounting Standards Codification



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Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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-Name Accounting Standards Codification



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-SubTopic 10



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