Annual report pursuant to Section 13 and 15(d)

Investments In Unconsolidated Joint Ventures (Rosewood Lafayette Holdings, L.L.C.) (Narrative) (Details)

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Investments In Unconsolidated Joint Ventures (Rosewood Lafayette Holdings, L.L.C.) (Narrative) (Details) (USD $)
 0 Months Ended 2 Months Ended 12 Months Ended
Dec. 31, 2012
Rosewood Lafayette Commons, L.L.C. [Member]
Dec. 23, 2012
Rosewood Lafayette Commons, L.L.C. [Member]
Dec. 31, 2012
Rosewood Lafayette Commons, L.L.C. [Member]
Dec. 31, 2012
Rosewood Lafayette Commons, L.L.C. [Member]
Dec. 31, 2012
Prudential [Member]
Oct. 23, 2012
Rosewood Lafayatte Holdings' Interest In Rosewood Lafayette Commons [Member]
Oct. 23, 2012
Rosewood Lafayette Holdings, L.L.C. [Member]
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Dec. 31, 2012
Rosewood Lafayette Holdings, L.L.C. [Member]
Prudential [Member]
Schedule of Equity Method Investments [Line Items]                
Indirect residual ownership percentage             25.00%  
Number of units             217  
Area of property (in square feet)             185,733  
Percentage of interest in venture             50.00%  
Investment ownership percentage           50.00%    
Percentage of operating return on capital 9.00% 8.00%            
Capital balance         $ 14,700,000     $ 29,300,000
Accumulated unpaid operating return               1,300,000
Mortgage loans, carrying amount 40,000,000   40,000,000 40,000,000        
Interest rate 4.00%   4.00% 4.00%        
Mortgage loan, maturity date       July 2015        
Amortization schedule       30 years        
Management, leasing and other services fees     $ 35,000          
Holding and distribution pattern under operating agreement       In general, the operating agreement of Rosewood Lafayette provides that operating cash flows are distributed to members first to Prudential and then to Rosewood based on an eight percent operating return to December 23, 2012 and nine percent thereafter on each members' capital balance in priorities as detailed in the operating agreement. Excess operating cash flows are distributed to the members in accordance with their ownership percentages.