Annual report pursuant to Section 13 and 15(d)

Investments In Unconsolidated Joint Ventures (ELMAJO Urban Renewal Associates, L.L.C.) (Narrative) (Details)

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Investments In Unconsolidated Joint Ventures (ELMAJO Urban Renewal Associates, L.L.C.) (Narrative) (Details) (USD $)
 2 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Oct. 23, 2012
item
property
Schedule of Equity Method Investments [Line Items]      
Maximum borrowing capacity $ 600,000,000 600,000,000  
Elmajo Urban Renewal Associates, L.L.C. [Member]
      
Schedule of Equity Method Investments [Line Items]      
Residual ownership interest     7.50%
Number of properties     3
Number of units     588
Percentage return on unrecovered capital   8.50%  
Development management and other services fees 74,000    
Holding and distribution pattern under operating agreement   The operating agreement of ELMAJO Urban Renewal Associates, LLC ("ELMAJO UR"), the entity which owns the Lincoln Harbor Project, provides, among other things, for the distribution of net distributable cash to the members, as follows:First, to the members to the extent of and in proportion to their respective preferred return of 8.50 percent on the member's unrecovered capital; andSecond, to the members in accordance with their ownership percentages.  
Elmajo Urban Renewal Associates, L.L.C. [Member] | ELMAJO Management, Inc. [Member]
      
Schedule of Equity Method Investments [Line Items]      
Capital balance 64,300,000 64,300,000  
Accumulated unpaid operating return 8,700,000 8,700,000  
Lincoln Harbor Project, Building A [Member] | Elmajo Urban Renewal Associates, L.L.C. [Member]
      
Schedule of Equity Method Investments [Line Items]      
Number of units     181
Lincoln Harbor Project, Building C [Member] | Elmajo Urban Renewal Associates, L.L.C. [Member]
      
Schedule of Equity Method Investments [Line Items]      
Number of units     174
Lincoln Harbor Project [Member] | Elmajo Urban Renewal Associates, L.L.C. [Member]
      
Schedule of Equity Method Investments [Line Items]      
Total project costs   225,000,000  
Construction Loan [Member] | Lincoln Harbor Project Buildings A And C [Member] | ELMAJO Management, Inc. [Member]
      
Schedule of Equity Method Investments [Line Items]      
Maximum borrowing capacity 95,000,000 95,000,000  
Amount outstanding $ 4,100,000 4,100,000  
Spread over LIBOR 2.10% 2.10%  
Loan maturity date   Jun. 01, 2016  
Loan extension period   1 year  
Extension fee   0.25%