Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (ELMAJO Urban Renewal Associates, L.L.C./Estuary Urban Renewal Unit B, LLC) (Narrative) (Details)

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Investments In Unconsolidated Joint Ventures (ELMAJO Urban Renewal Associates, L.L.C./Estuary Urban Renewal Unit B, LLC) (Narrative) (Details) (USD $)
0 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended
Jul. 15, 2013
Sep. 30, 2013
Sep. 30, 2013
Elmajo Urban Renewal Associates, L.L.C. [Member]
Oct. 23, 2012
Elmajo Urban Renewal Associates, L.L.C. [Member]
property
item
Sep. 30, 2013
Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]
Sep. 30, 2013
Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]
Sep. 30, 2013
Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]
ELMAJO Management, Inc. And Estuary Urban Renewal Unit B, LLC [Member]
Oct. 23, 2012
Lincoln Harbor Project, Building A [Member]
Elmajo Urban Renewal Associates, L.L.C. [Member]
item
Oct. 23, 2012
Lincoln Harbor Project, Building C [Member]
Elmajo Urban Renewal Associates, L.L.C. [Member]
item
Jan. 31, 2013
Lincoln Harbor Project, Building B [Member]
item
Sep. 30, 2013
Lincoln Harbor Project [Member]
Sep. 30, 2013
Lincoln Harbor Project [Member]
Elmajo Urban Renewal Associates, L.L.C. [Member]
Sep. 30, 2013
Construction Loan [Member]
Lincoln Harbor Project, Building B [Member]
Estuary Urban Renewal Unit B, LLC [Member]
Sep. 30, 2013
Construction Loan [Member]
Lincoln Harbor Project Buildings A And C [Member]
ELMAJO Management, Inc. [Member]
Schedule of Equity Method Investments [Line Items]                            
Residual ownership interest       7.50%                    
Number of properties       3                    
Number of units       582       181 174 227        
Total project costs                       $ 218,300,000    
Percentage return on unrecovered capital     8.50%                      
Capital balance             73,900,000              
Accumulated unpaid operating return             13,500,000              
Maximum borrowing capacity 600,000,000 600,000,000                     57,000,000 95,000,000
Amount outstanding                         4,100,000 40,200,000
Spread over LIBOR 1.25%                       2.10% 2.10%
Loan maturity date                         Jan. 01, 2017 Jun. 01, 2016
Loan extension period                         1 year 1 year
Extension fee                         0.25% 0.25%
Development management and other services fees         255,000 735,000                
Funding requirements                     $ 0      
Holding and distribution pattern under operating agreement     The operating agreements of ELMAJO Urban Renewal Associates, LLC ("ELMAJO UR"), the entity which owns the Lincoln Harbor Project, Building A and C, and Estuary UR, the entity that owns the Lincoln Harbor Project Building B, 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.