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Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2011
Dec. 31, 2010
Mar. 31, 2010
Promenade Diberville LLC [Member]
Jun. 30, 2011
CW Joint Venture [Member]
Jun. 30, 2011
Lee Summit [Member]
Dec. 31, 2010
Lee Summit [Member]
Jun. 30, 2011
West Melbourne I LLC [Member]
Jun. 30, 2011
Port Orange I LLC [Member]
Jun. 30, 2011
JG Gulf Coast Town Center LLC [Member]
Jun. 30, 2011
York Town Center LP [Member]
Guarantor Obligations [Line Items]                    
Retainage allegedly owed under the construction contract     $ 327              
Annual preferred distribution (in hundredths)       5.00%            
Annual preferred distribution rate Increase (in hundredths)       6.00%            
Guarantees [Abstract]                    
Guaranteed percentage of the third party's construction loan and bond line of credit (the loans) (in hundredths)         27.00%   100.00% 100.00% 100.00%  
Initial maximum guaranteed amount of third party's construction loan         24,379   22,000   11,561  
Maximum guarantee obligation after loans were partially paid down         19,170   50,678 97,183    
Total amount outstanding on the loans         61,793   45,360 68,282    
Number of one-year extension options available             2 2    
Guaranteed amount of the outstanding loan         16,684   18,000      
Estimated fair value of guaranty         192 315 670 1,120    
Percentage of interest owned in unconsolidated affiliate (in hundredths)             50.00% 50.00% 50.00% 50.00%
Construction loan             42,084      
Land loan             3,276      
Guaranteed minimum exposure amount             10,000      
Annual reductions to the guarantor's obligations             800      
Percentage of guaranty obligation agreed to be reimbursed by joint venture partner (in hundredths)             50.00%      
Borrowings from secured credit facility                 105,000  
Performance Bonds [Abstract]                    
Total outstanding amount on performance bonds $ 31,001 $ 26,250