Sales of Real Estate and Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011 properties states	Jun. 30, 2010	Jun. 30, 2011 ClassesOfFinancing tenants TypesOfFinancing shareholders properties states	Jun. 30, 2010 tenants properties
Real Estate Properties [Line Items]
Real Estate Number Of Properties Sold			11	5
Nonrecourse Mortgage Debt			$ 28,648	$ 38,101
Seller Financing			3,003
Debt satisfaction gains (charges), net	(10)	0	9	(762)
Aggregate Gain on Sales of Properties			5,069	498
Properties Classified as Held-for-sale	3		3
Total gross revenues	526	6,819	2,594	14,815
Pre-tax loss, including gains on sale	(5,014)	(18,949)	(29,376)	(44,759)
Eleven Properties [Member]
Real Estate Properties [Line Items]
Aggregate Gross Disposition Price			121,878
Five Properties [Member]
Real Estate Properties [Line Items]
Aggregate Gross Disposition Price				42,327
Discontinued Operation or Asset Disposal [Member]
Real Estate Properties [Line Items]
Debt satisfaction gains (charges), net			$ 603	$ 3,385

Financing Provided To Buyer By Seller

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Real Estate Disposition Price

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Real Estate Non Recourse Mortgage Debt Assumed By Buyer

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Real Estate Number Of Properties Sold

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Real Estate Properties Held For Sale

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Amount of operating income or loss attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 47
-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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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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-Section 45
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Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.

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-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 26
-Paragraph 20, 21
-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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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.

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