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Lease Agreements (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Lease Agreements [Abstract]  
Number of commercial buildings leased 4
Number of commercial portions of mixed use communities leased 20
Future minimum rent  
2013 $ 8,592
2014 8,395
2015 6,933
2016 4,512
2017 2,781
Thereafter 14,562
Total future minimum rent $ 45,775