Quarterly report pursuant to Section 13 or 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 $)
3 Months Ended 3 Months Ended
Mar. 31, 2013
Mar. 31, 2013
Elmajo Urban Renewal Associates, L.L.C. [Member]
Oct. 23, 2012
Elmajo Urban Renewal Associates, L.L.C. [Member]
property
item
Mar. 31, 2013
Elmajo Urban Renewal Associates, L.L.C. [Member]
ELMAJO Management, Inc. [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
Mar. 31, 2013
Lincoln Harbor Project [Member]
Mar. 31, 2013
Lincoln Harbor Project [Member]
Elmajo Urban Renewal Associates, L.L.C. [Member]
Mar. 31, 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                 $ 220,000,000  
Percentage return on unrecovered capital   8.50%                
Capital balance       66,000,000            
Accumulated unpaid operating return       10,200,000            
Maximum borrowing capacity 600,000,000                 95,000,000
Amount outstanding                   14,400,000
Spread over LIBOR                   2.10%
Loan maturity date                   Jun. 01, 2016
Loan extension period                   1 year
Extension fee                   0.25%
Development management and other services fees   240,000                
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.