Reportable Segments Table (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	$ 21,739	$ 21,375	$ 66,218	$ 64,627
Fee income, Net of Reimbursed Expenses	8,419	5,343	17,414	13,516
Residential lot and other sales, net of cost of sales	378	7	882	2,284
Other Income	3,328	448	5,059	1,605
Third party management and leasing expenses	(1,782)	(2,143)	(6,034)	(5,859)
General and administrative expenses	(5,255)	(4,295)	(17,523)	(17,828)
Interest Expense	(5,793)	(6,601)	(17,936)	(21,503)
Loss on extinguishment of debt	0	(74)	(94)	(74)
Depreciation and Amortization of Non Real Estate Assets	(256)	(388)	(843)	(1,323)
Asset Impairment Charges	(488)	0	(488)	(3,508)
Separation expenses	(574)	(15)	(866)	(193)
Other expenses	(2,265)	(790)	(3,543)	(2,324)
Funds from Operations from Unconsolidated Joint Ventures	4,744	5,099	14,279	15,243
Gain on Sale of Third Party Management and Leasing Business	7,384		7,384
Funds from operations attributable to noncontrolling interests	(608)	(611)	(1,784)	(1,873)
(PROVISION) BENEFIT FOR INCOME TAXES FROM OPERATIONS	(60)	180	(120)	217
Preferred Stock Dividends	(3,226)	(3,226)	(9,680)	(9,680)
Funds from Operations Available to Common Stockholders	25,685	14,309	52,325	33,327
Real Estate Depreciation and Amortization Including Company's Share of Joint Ventures	(16,361)	(15,420)	(47,936)	(46,735)
Noncontrolling Interest Related to Gain on Sale of Depreciable Investment Property		(1,581)	2,043	(1,581)
Gain (Loss) on Sale of Depreciable Investment Properties	120	2,880	8,534	2,614
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	9,444	188	2,733	(12,375)
Office Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	17,242	15,442	50,920	46,152
Other Income	2,975	368	2,975	1,185
Funds from Operations from Unconsolidated Joint Ventures	2,731	2,766	8,440	8,215
Funds from Operations Available to Common Stockholders	22,948	18,576	62,335	55,552
Retail Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	4,497	5,026	15,297	15,607
Residential lot and other sales, net of cost of sales				50
Other Income	267	0	472	34
Other expenses	(8)
Funds from Operations from Unconsolidated Joint Ventures	2,150	2,110	6,436	6,476
Funds from Operations Available to Common Stockholders	6,906	7,136	22,205	22,167
Land [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	0	0	0	0
Fee income, Net of Reimbursed Expenses		14		105
Residential lot and other sales, net of cost of sales	378	7	882	57
Funds from Operations from Unconsolidated Joint Ventures	(137)	225	(594)	504
Funds from Operations Available to Common Stockholders	241	246	288	666
Third Party Management [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	0	0	0	0
Fee income, Net of Reimbursed Expenses	2,311	3,300	8,396	7,536
Third party management and leasing expenses	(1,782)	(2,143)	(6,034)	(5,859)
Gain on Sale of Third Party Management and Leasing Business	7,384		7,384
Funds from Operations Available to Common Stockholders	7,913	1,157	9,746	1,677
All Other Segments [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	0	907	1	2,868
Fee income, Net of Reimbursed Expenses	6,108	2,029	9,018	5,875
Residential lot and other sales, net of cost of sales		0		2,177
Other Income	86	80	1,612	386
General and administrative expenses	(5,255)	(4,295)	(17,523)	(17,828)
Interest Expense	(5,793)	(6,601)	(17,936)	(21,503)
Loss on extinguishment of debt		(74)	(94)	(74)
Depreciation and Amortization of Non Real Estate Assets	(256)	(388)	(843)	(1,323)
Asset Impairment Charges	(488)		(488)	(3,508)
Separation expenses	(574)	(15)	(866)	(193)
Other expenses	(2,257)	(790)	(3,543)	(2,324)
Funds from Operations from Unconsolidated Joint Ventures	0	(2)	(3)	48
Funds from operations attributable to noncontrolling interests	(608)	(611)	(1,784)	(1,873)
(PROVISION) BENEFIT FOR INCOME TAXES FROM OPERATIONS	(60)	180	(120)	217
Preferred Stock Dividends	(3,226)	(3,226)	(9,680)	(9,680)
Funds from Operations Available to Common Stockholders	$ (12,323)	$ (12,806)	$ (42,249)	$ (46,735)