Discontinued Operations (Summary Of Community Dispositions) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Discontinued Operations [Abstract]
Number Of Disposed Communities		5
Number Of Disposed Units		1,333
Number Of Transactions		3
Total Sales Price		$ 108,300
Sales Price Per Unit		81
Total Gain On Sale	$ (13)	$ 24,314

Disposal Group Including Discontinued Operation Number Of Discontinued Transactions

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Disposal Group Including Discontinued Operation Number Of Disposed Communities

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Disposal Group Including Discontinued Operation Number Of Disposed Units

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Disposal Group Including Discontinued Operation Sales Price Per Unit

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Disposal Group Including Discontinued Operation Total Sales Price Of Communities

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Gain (loss) after tax expense or benefit, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 43

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-Name Accounting Standards Codification

-Topic 205

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