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Development of Rental Properties - Change in Accounting Estimate (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2010
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Dec. 31, 2009
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| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share | $ 0.10 | $ 0.08 |
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Service Life [Member]
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| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| Change in Accounting Principle Effect on Depreciation and Amortization Expense | 9.0 | 6.3 |
| X | ||||||||||
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- Definition
Disclosure of the effect on income from continuing operations, net income (or other appropriate captions of changes in applicable net assets or performance indicator), and any related per-share amounts of the current period when a change in accounting estimate affects several future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the effect of a change in accounting principle on diluted earnings per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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