Assumed Capitalization Rate Range Used To Determine Fair Value

No definition available.

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- Definition

Assumed Growth Rate Used To Determine Fair Value Of Available For Sale Security

+ References

No definition available.

+ Details

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- Definition

Assumed Reduction In Cash Flows Used To Calculate Fair Value Of Cost Method Investment

+ References

No definition available.

+ Details

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- Definition

Assumption of Holding Period Years Used to Calculate Fair Value

+ References

No definition available.

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- Definition

Discount Percentage Used To Calculate Fair Value Of Available For Sale Securities

+ References

No definition available.

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- Definition

Discount Rate Used To Calculate Fair Value Of Privately Held Debt And Equity Securities

+ References

No definition available.

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- Definition

Estimated Sales Costs Used to Determine Fair Value

+ References

No definition available.

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- Definition

Fair value of real estate investment

+ References

No definition available.

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- Definition

Net Present Value Percent Used To Calculate Fair Value Of Available For Sale Securities

+ References

No definition available.

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- Definition

The net cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth; net of selling costs.

+ References

No definition available.

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- Definition

Percentage of Revenue

+ References

No definition available.

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- Definition

This element represents privately held debt and equity securities, valued at fair value by the entity

+ References

No definition available.

+ Details

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- Definition

Date of maturity of a debt security categorized as neither trading nor held-to-maturity, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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- Definition

The number of derivative instruments of a particular derivative asset or group of derivative assets held by the entity.

+ References

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

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- Definition

The number of derivative instruments of a particular derivative liability or group of derivative liabilities held by the entity.

+ References

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 26

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ References

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

-Publisher FASB

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-Topic 825

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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- Definition

Amount of increase to real estate investments during the period other than acquisitions and improvements made to real estate.

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-Name Accounting Standards Codification

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-Name Regulation S-X (SX)

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Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended			3 Months Ended
	Sep. 30, 2012 Y	Sep. 30, 2011	Sep. 30, 2012 Y	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Courtyard at Hickory Hollow [Member]	Sep. 30, 2012 Courtyard at Hickory Hollow [Member]	Dec. 31, 2011 Courtyard at Hickory Hollow [Member]	Sep. 30, 2012 Willowbrook Plaza [Member]	Sep. 30, 2012 Willowbrook Plaza [Member]	Dec. 31, 2011 Willowbrook Plaza [Member]	Sep. 30, 2012 Willowbrook and Hickory Hollow Totals [Member]	Sep. 30, 2012 Willowbrook and Hickory Hollow Totals [Member]	Dec. 31, 2011 Willowbrook and Hickory Hollow Totals [Member]	Sep. 30, 2012 Outparcel Sale [Member]	Sep. 30, 2012 High Point Outparcels [Member]	Nov. 27, 2012 High Point Outparcels [Member]	Sep. 30, 2012 Cobblestone Village Outparcels [Member]	Jul. 18, 2012 Cobblestone Village Outparcels [Member]	Sep. 30, 2012 Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	Dec. 31, 2011 Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	Sep. 30, 2012 Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2011 Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member]
Assets:
Fair value of available-for-sale securities	$ 27,614		$ 27,614		$ 30,613															$ 15,785	$ 18,784	$ 0	$ 0	$ 11,829	$ 11,829
Privately held debt and equity securities	2,475		2,475		2,475															0	0	0	0	2,475	2,475
Interest rate Cap	0		0																	0		0		0
Fair value of real estate investment	27,043		27,043			2,843	2,843		24,200	24,200		27,043	27,043											27,043
Liabilities:
Interest rate swaps	6,313		6,313		5,617															0	0	6,313	5,617	0	0
Derivative Liability, Number of Instruments Held	4		4		4
Derivative Asset, Number of Instruments Held	1		1		1
Recognized realized (gains) and losses on sale of marketable securities			(160)	22
Long-term Debt, Fair Value	5,153,568		5,153,568		4,836,028
Available-for-sale Securities, Debt Maturities, Date			Oct. 01, 2028
Net Present Value Percent Used To Calculate Fair Value Of Available For Sale Securities	7.00%		7.00%
Discount Percentage Used To Calculate Fair Value Of Available For Sale Securities	5.00%		5.00%
Assumed Growth Rate Used To Determine Fair Value Of Available For Sale Security	5.00%		5.00%
Assumed Reduction In Cash Flows Used To Calculate Fair Value Of Cost Method Investment	0% to 10%		0% to 10%
Assumed Capitalization Rate Range Used To Determine Fair Value	10% to 12%		10% to 12%
Discount Rate Used To Calculate Fair Value Of Privately Held Debt And Equity Securities	20.00%		20.00%
Net proceeds from sale	7,432															541		276
Assumption of Holding Period Years Used to Calculate Fair Value	10		10
Estimated Sales Costs Used to Determine Fair Value	0.00%		0.00%
Real Estate Investment Property, Net	6,143,896		6,143,896		6,005,670	5,843	5,843	5,754	41,943	41,943	42,666			48,420			814		914
Real Estate, Other Additions							191			98			289
Depreciation							(102)			(821)			(923)
Loss on impairment of real estate	$ 21,654	$ 51,304	$ 21,654	$ 51,304		$ 3,000	$ (3,000)		$ 17,743	$ (17,743)		$ 20,743	$ (20,743)		$ 911
Percentage of Revenue			0.50%