Business Segments (Details Textual) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | |
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Jun. 30, 2013
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Jun. 30, 2012
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Business Segments (Textual) [Abstract] | ||
Number of reportable segments | 2 | |
Conventional Real Estate Operations [Member]
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Business Segments (Textual) [Abstract] | ||
Capital additions related to segments | $ 149.0 | $ 103.7 |
Affordable Real Estate Operations [Member]
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Business Segments (Textual) [Abstract] | ||
Capital additions related to segments | $ 4.8 | $ 7.8 |
Affordable Real Estate [Member]
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Business Segments (Textual) [Abstract] | ||
Number of owned real estate properties in segments | 82 | |
Number of units in owned real estate properties in segments | 11,212 | |
Conventional Real Estate [Member]
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Business Segments (Textual) [Abstract] | ||
Number of owned real estate properties in segments | 176 | |
Number of units in owned real estate properties in segments | 55,965 |