Reportable Segments Table (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Residential lot and other sales, net of cost of sales		$ 0
Fee income, Net of Reimbursed Expenses		0
Severance Costs	0	213,000
General and administrative expenses		0
Reimbursed Expenses	(1,910,000)	(1,375,000)
Interest Expense		0
Preferred Stock Dividends	(3,227,000)	(3,227,000)
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	53,170,000	(13,112,000)
Office Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	21,837,000	20,598,000
Residential lot and other sales, net of cost of sales	0
Fee income, Net of Reimbursed Expenses	0
Other Income	0	0
Third party management and leasing expenses	0
General and administrative expenses	0
Reimbursed Expenses	0
Interest Expense	0
Other expenses	0
Preferred Stock Dividends	0
Funds from Operations Available to Common Stockholders	21,837,000	20,598,000
Retail Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	4,290,000	8,658,000
Residential lot and other sales, net of cost of sales	0
Fee income, Net of Reimbursed Expenses	0	0
Other Income	0	0
Third party management and leasing expenses	0
General and administrative expenses	0
Reimbursed Expenses	0
Interest Expense	0
Other expenses	0
Preferred Stock Dividends	0
Funds from Operations Available to Common Stockholders	4,290,000	8,658,000
Land [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	0	0
Residential lot and other sales, net of cost of sales	243,000	385,000
Fee income, Net of Reimbursed Expenses	0	0
Other Income	0
Third party management and leasing expenses	0
General and administrative expenses	0
Reimbursed Expenses	0
Interest Expense	0
Other expenses	0
Preferred Stock Dividends	0
Funds from Operations Available to Common Stockholders	243,000	385,000
Third Party Management [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	0	0
Residential lot and other sales, net of cost of sales	0	0
Fee income, Net of Reimbursed Expenses	74,000	4,711,000
Other Income	0
Third party management and leasing expenses	(53,000)	(4,301,000)
General and administrative expenses	0
Reimbursed Expenses	0
Interest Expense	0
Other expenses	0
Preferred Stock Dividends	0
Funds from Operations Available to Common Stockholders	21,000	410,000
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	43,000	1,000
Residential lot and other sales, net of cost of sales	168,000	(1,000)
Fee income, Net of Reimbursed Expenses	3,580,000	2,856,000
Other Income	282,000	1,507,000
Third party management and leasing expenses	0
Severance Costs		213,000
General and administrative expenses	(6,069,000)	(6,623,000)
Reimbursed Expenses	(1,910,000)	(1,375,000)
Interest Expense	(6,645,000)	(7,447,000)
Other expenses	(1,152,000)	(2,041,000)
Preferred Stock Dividends	(3,227,000)	3,227,000
Funds from Operations Available to Common Stockholders	(14,930,000)	(16,563,000)
Total Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	26,170,000	29,257,000
Residential lot and other sales, net of cost of sales	411,000	384,000
Fee income, Net of Reimbursed Expenses	3,654,000	7,567,000
Other Income	282,000	1,507,000
Third party management and leasing expenses	(53,000)	(4,301,000)
Severance Costs		213,000
General and administrative expenses	(6,069,000)	(6,623,000)
Reimbursed Expenses	(1,910,000)	(1,375,000)
Interest Expense	(6,645,000)	(7,447,000)
Other expenses	(1,152,000)	(2,041,000)
Preferred Stock Dividends	(3,227,000)	3,227,000
Funds from Operations Available to Common Stockholders	11,461,000	13,488,000
Real Estate Depreciation and Amortization Including Company's Share of Joint Ventures	(15,320,000)	(16,553,000)
Noncontrolling Interest Related to Gain on Sale of Depreciable Investment Property		(10,190,000)
Gain (Loss) on Sale of Depreciable Investment Properties	57,029,000	143,000
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	$ 53,170,000	$ (13,112,000)