Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (12 Vreeland Associates, L.L.C.) (Details)

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Investments In Unconsolidated Joint Ventures (12 Vreeland Associates, L.L.C.) (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended
Sep. 08, 2006
sqft
Mar. 31, 2012
12 Vreeland [Member]
   
Schedule of Equity Method Investments [Line Items]    
Percentage of interest in venture 50.00%  
Mortgage loans, carrying amount   $ 652,000.0
Interest rate   6.90%
Mortgage loan, maturity date   July 1, 2012
Area of office property, square feet 139,750  
Holding and distribution pattern under operating agreement
Under the operating agreement of 12 Vreeland Associates, L.L.C., M-C Vreeland has a 50 percent interest, with S/K Florham Park Associates, L.L.C. (the managing member) and its affiliate holding the other 50 percent.
 
S/K Florham Park Associates LLC [Member]
   
Schedule of Equity Method Investments [Line Items]    
Percentage of interest in venture 50.00%