Annual report pursuant to Section 13 and 15(d)

Investments In Unconsolidated Joint Ventures (Gale Jefferson, L.L.C.) (Narrative) (Details)

v2.4.0.6
Investments In Unconsolidated Joint Ventures (Gale Jefferson, L.L.C.) (Narrative) (Details) (USD $)
0 Months Ended 12 Months Ended
Jan. 04, 2013
Dec. 31, 2012
sqft
Dec. 31, 2011
Dec. 31, 2010
One Jefferson [Member]
       
Schedule of Equity Method Investments [Line Items]        
Percentage of interest in venture   8.33%    
Mortgage loans, carrying amount   $ 20,200,000    
Spread over LIBOR   1.60%    
Mortgage loan, maturity date   October 2013    
Gale Jefferson, L.L.C. [Member]
       
Schedule of Equity Method Investments [Line Items]        
Square footage of office buildings   100,010    
Lease expiration date   Aug. 01, 2025    
Venture sale of real estate 3,200,000      
Share of gain on sale of real estate 1,100,000      
Management, leasing and other services fees   193,000 154,000 532,000
Direct costs of management, leasing and other services fees   $ 0 $ 0 $ 5,600,000