Fair Value Measurements (Quantitative Information Regarding Level 3 Assets Measured At Fair Value On Non-recurring Basis) (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Real estate held for sale/conveyance	$ 70,757,000	$ 16,508,000
Number of properties		59us-gaap_NumberOfRealEstateProperties
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Real estate held for sale/conveyance	70,757,000	13,084,000
Fair Value, Inputs, Level 3 [Member] \| Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Price per acre	35,000
Operating retail real estate [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of properties	6
Operating retail real estate [Member] \| Fair Value, Inputs, Level 3 [Member] \| Discounted Cash Flow Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Real estate held for sale/conveyance	70,210,000	13,084,000
Capitalization rates		8.30%
Discount rates		9.60%
Operating retail real estate [Member] \| Fair Value, Inputs, Level 3 [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Capitalization rates	7.80%
Discount rates	9.20%
Operating retail real estate [Member] \| Fair Value, Inputs, Level 3 [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Capitalization rates	11.00%
Discount rates	11.60%
Operating retail real estate [Member] \| Fair Value, Inputs, Level 3 [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Capitalization rates	8.20%
Discount rates	9.40%
Land [Member] \| Fair Value, Inputs, Level 3 [Member] \| Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Real estate held for sale/conveyance	$ 547,000

Fair Value Inputs Price Per Acre

No definition available.

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- Definition

Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

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- Details

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- Definition

Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input to measure fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

+ Details

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

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