Reportable Segments Table (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Severance Costs	$ (84,000)	$ 0
Reimbursed Expenses	(932,000)	(1,910,000)
Preferred Stock Dividends and Original Issuance Costs	(1,777,000)	(3,227,000)
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	5,200,000	53,170,000
Office Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	47,598,000	21,837,000
Residential lot and other sales, net of cost of sales	0	0
Fee income, Net of Reimbursed Expenses	0	0
Other Income	0	0
Third party management and leasing expenses	0	0
Severance Costs	0
General and administrative expenses	0	0
Reimbursed Expenses	0	0
Interest Expense	0	0
Other expenses	0	0
Preferred Stock Dividends and Original Issuance Costs	0	0
Funds from Operations Available to Common Stockholders	47,598,000	21,837,000
Retail Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	1,303,000	4,290,000
Residential lot and other sales, net of cost of sales	0	0
Fee income, Net of Reimbursed Expenses	0	0
Other Income	0	0
Third party management and leasing expenses	0	0
Severance Costs	0
General and administrative expenses	0	0
Reimbursed Expenses	0	0
Interest Expense	0	0
Other expenses	0	0
Preferred Stock Dividends and Original Issuance Costs	0	0
Funds from Operations Available to Common Stockholders	1,303,000	4,290,000
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	160,000	243,000
Fee income, Net of Reimbursed Expenses	0	0
Other Income	0	0
Third party management and leasing expenses	0	0
Severance Costs	0
General and administrative expenses	0	0
Reimbursed Expenses	0	0
Interest Expense	0	0
Other expenses	0	0
Preferred Stock Dividends and Original Issuance Costs	0	0
Funds from Operations Available to Common Stockholders	160,000	243,000
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	1,117,000	43,000
Residential lot and other sales, net of cost of sales	0	168,000
Fee income, Net of Reimbursed Expenses	2,339,000	3,654,000
Other Income	1,908,000	282,000
Third party management and leasing expenses	(7,000)	(53,000)
Severance Costs	(84,000)
General and administrative expenses	(5,611,000)	(6,069,000)
Reimbursed Expenses	(932,000)	(1,910,000)
Interest Expense	(9,012,000)	(6,645,000)
Other expenses	(834,000)	(1,152,000)
Preferred Stock Dividends and Original Issuance Costs	(1,777,000)	(3,227,000)
Funds from Operations Available to Common Stockholders	(12,879,000)	(14,909,000)
Total Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	50,018,000	26,170,000
Residential lot and other sales, net of cost of sales	160,000	411,000
Fee income, Net of Reimbursed Expenses	2,339,000	3,654,000
Other Income	1,908,000	282,000
Third party management and leasing expenses	(7,000)	(53,000)
Severance Costs	(84,000)
General and administrative expenses	(5,611,000)	(6,069,000)
Reimbursed Expenses	(932,000)	(1,910,000)
Interest Expense	(9,012,000)	(6,645,000)
Other expenses	(834,000)	(1,152,000)
Preferred Stock Dividends and Original Issuance Costs	(1,777,000)	(3,227,000)
Funds from Operations Available to Common Stockholders	36,182,000	11,461,000
Real Estate Depreciation and Amortization Including Company's Share of Joint Ventures	(36,953,000)	(15,320,000)
Gain (Loss) on Sale of Depreciable Investment Properties	5,971,000	57,029,000
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	$ 5,200,000	$ 53,170,000