Commitments and Contingencies (Details) (USD $)	Dec. 31, 2013 Community Lease
Commitments and Contingencies [Abstract]
Number of non cancelable ground leases	5
Operating Leases, Future Minimum Payments Due [Abstract]
Due by December 31, 2014	$ 1,700,000
December 31, 2015	1,700,000
December 31, 2016	1,700,000
December 31, 2017	1,700,000
December 31, 2018	1,700,000
Number of communities with indemnification agreements from third parties for potential environmental clean-up costs	3
Comprehensive liabilities insurance deductible per incident	100,000
Property casualty insurance, deductible per incident, maximum	5,000,000
Payment Guarantee [Member] \| Construction Contracts [Member]
Guarantor Obligations [Line Items]
Maximum exposure of the guarantee	$ 97,700,000

Amount of risk retained by the entity before the insurance arrangement begins to provide coverage.

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Number of communities with indemnification agreements from third parties for potential environmental clean-up costs.

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Number of non-cancelable ground leases.

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Amount of risk retained by the entity before the insurance arrangement begins to provide coverage.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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