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

0 Months Ended

3 Months Ended

9 Months Ended

Oct. 24, 2011

Aug. 22, 2007

sqft

Sep. 30, 2011

Sep. 30, 2010

Sep. 30, 2011

Sep. 30, 2010

M-C Jefferson [Member]

Percentage of interest in venture

8.33%

Gale Jefferson [Member]

Mortgage loans, carrying amount

$ 20,200,000

$ 21,000,000

Mortgage loan maturity date

October 24, 2012

October 24, 2011

Area of office property

100,010

Spread over LIBOR

160

Management leasing and other services fees

39,000

336,000

118,000

467,500

Service costs

$ 0

$ 1,300,000

$ 0

$ 5,300,000

Holding and distribution pattern under operating agreement

The operating agreement of M-C Jefferson provides, among other things, for the Participation Rights (see Note 15: 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.

Investments In Unconsolidated Joint Ventures (Gale Jefferson, L.L.C.) (Details) (USD $)	0 Months Ended		3 Months Ended		9 Months Ended
	Oct. 24, 2011	Aug. 22, 2007 sqft	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
M-C Jefferson [Member]
Percentage of interest in venture		8.33%
Gale Jefferson [Member]
Mortgage loans, carrying amount	$ 20,200,000		$ 21,000,000		$ 21,000,000
Mortgage loan maturity date	October 24, 2012				October 24, 2011
Area of office property		100,010
Spread over LIBOR	160				160
Management leasing and other services fees			39,000	336,000	118,000	467,500
Service costs			$ 0	$ 1,300,000	$ 0	$ 5,300,000
Holding and distribution pattern under operating agreement		The operating agreement of M-C Jefferson provides, among other things, for the Participation Rights (see Note 15: 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.