Quarterly report pursuant to Section 13 or 15(d)

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

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Investments In Unconsolidated Joint Ventures (Gale Jefferson, L.L.C.) (Details) (USD $)
 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2012
One Jefferson [Member]
Oct. 24, 2011
One Jefferson [Member]
Aug. 22, 2007
One Jefferson [Member]
Sep. 30, 2012
Gale Jefferson [Member]
Sep. 30, 2011
Gale Jefferson [Member]
Sep. 30, 2012
Gale Jefferson [Member]
Sep. 30, 2011
Gale Jefferson [Member]
Aug. 22, 2007
Gale Jefferson [Member]
sqft
Aug. 22, 2007
M.C. Jefferson [Member]
Aug. 22, 2007
Hampshire [Member]
Schedule of Equity Method Investments [Line Items]                    
Percentage of interest in venture     8.33%           33.33% 66.67%
Area of office property, square feet               100,010    
Percentage of annual compound return to the Member's Capital Contributions               12.00%    
Percentage amount distributed to the Company and Hampshire               50.00%    
Mortgage loans, carrying amount   $ 21,000,000                
Spread over LIBOR 1.60% 1.60%                
New mortgage loan 20,200,000                  
LIBOR period 1 month                  
Mortgage loan, maturity date October 24, 2013                  
Management leasing and other services fees       $ 48,000 $ 39,000 $ 144,000 $ 118,000      
Holding and distribution pattern under operating agreement           The operating agreement of M-C Jefferson provides, among other things, for the Participation Rights (see Note 16: Noncontrolling Interests in Subsidiaries – Participation Rights). The operating agreements of Gale Jefferson, L.L.C. ("Gale Jefferson"), which is owned 33.33 percent by M-C Jefferson and 66.67 percent by the Hampshire Generational Fund, L.L.C. ("Hampshire") provides, among other things, for the distribution of net cash flow, first, in accordance with its member's respective interests until each member is provided, as a result of such distributions, with an annual 12 percent compound return on the Member's Capital Contributions, as defined in the operating agreement and secondly, 50 percent to each of the Company and Hampshire.