Annual report pursuant to Section 13 and 15(d)

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

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Investments In Unconsolidated Joint Ventures (12 Vreeland Associates, L.L.C.) (Narrative) (Details)
12 Months Ended
Dec. 31, 2012
sqft
12 Vreeland Associates, L.L.C. [Member]
 
Schedule of Equity Method Investments [Line Items]  
Percentage of interest in venture 50.00%
Area of property (in square feet) 139,750
Holding and distribution pattern under operating agreement M-C Vreeland holds a 50 percent interest in 12 Vreeland Associates, L.L.C., 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]  
Third party ownership percentage 50.00%