Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (RoseGarden Marbella South, L.L.C.) (Narrative) (Details)

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Investments In Unconsolidated Joint Ventures (RoseGarden Marbella South, L.L.C.) (Narrative) (Details) (USD $)
0 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 0 Months Ended 0 Months Ended 9 Months Ended
Jul. 15, 2013
Sep. 30, 2013
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Sep. 30, 2013
PruRose Marbella II, L.L.C. [Member]
Sep. 30, 2013
PruRose Marbella II, L.L.C. [Member]
Sep. 30, 2013
RoseGarden Marbella South, L.L.C. [Member]
Oct. 23, 2012
RoseGarden Marbella South, L.L.C. [Member]
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Sep. 30, 2013
RoseGarden Marbella South, L.L.C. [Member]
PruRose Marbella II, L.L.C. [Member]
Oct. 23, 2012
RoseGarden Marbella South's Interest In PruRose Marbella II [Member]
Sep. 30, 2013
Marbella II Project [Member]
Sep. 30, 2013
Marbella II Project [Member]
PRISA III Investments LLC [Member]
Sep. 30, 2013
Marbella II Project [Member]
Parent Company [Member]
Oct. 01, 2013
Construction Loan [Member]
PruRose Marbella II, L.L.C. [Member]
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Sep. 30, 2013
Construction Loan [Member]
Marbella II Project [Member]
RoseGarden Marbella South, L.L.C. [Member]
Oct. 01, 2013
Construction Loan Extension Number 1 [Member]
PruRose Marbella II, L.L.C. [Member]
Sep. 30, 2013
Construction Loan Extension Number 2 [Member]
PruRose Marbella II, L.L.C. [Member]
Schedule of Equity Method Investments [Line Items]                              
Indirect residual ownership percentage           24.27%                  
Number of units           311                  
Percentage of interest in venture           48.5325%                  
Investment ownership percentage               50.00%              
Total project costs                 $ 132,100,000 $ 41,400,000 $ 13,300,000        
Estimated project costs to be funded by member capital                 54,700,000            
Maximum borrowing capacity 600,000,000 600,000,000                   77,400,000 77,400,000    
Percentage of operating return on capital       9.00%                      
Capital balance         1,700,000   3,400,000                
Accumulated unpaid operating return         39,000   300,000                
Spread over LIBOR 1.25%                     2.25%      
Number of extension options   2                   2      
Mortgage loan, maturity date                       April 1, 2017      
Loan extension period                       1 year      
Extension fee                           0.25% 0.25%
Development management and other services fees     $ 195,000 $ 213,000                      
Holding and distribution pattern under operating agreement       In general, the operating agreement of PruRose/Marbella II provides that operating cash flows are distributed to members pro-rata based on a nine percent operating return 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.