Investment in Unconsolidated Ventures (Details Textuals) (USD $)	1 Months Ended
Jun. 30, 2011	Sep. 30, 2011	Dec. 31, 2010
Additional Investment In Unconsolidated Ventures (Textuals) [Abstract]
Investment in real estate ventures, at equity		$ 84,219,000	$ 84,372,000
Area of undeveloped parcel of land (in acres) owned by a Real Estate Venture		3
Unconsolidated real estate ventures [Member]
Additional Investment In Unconsolidated Ventures (Textuals) [Abstract]
Investment in real estate ventures, at equity		84,219,000	84,372,000
Guaranteed repayment of loans on behalf of a certain Real Estate Venture		700,000
Income from Real estate venture	$ 600,000

Additional Investment In Unconsolidated Ventures.

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Area owned by Real estate venture of undeveloped parcel of land (in acres).

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- Definition

This item represents the amount of gain (loss) arising from the disposal of an equity method investment.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph c

-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

-Topic 460

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-Section 50

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