CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Rental Income	$ 57,092	$ 55,276	$ 113,320	$ 109,260
Tenant Recoveries and Other Income	17,654	16,025	34,861	32,149
Total Revenues	74,746	71,301	148,181	141,409
Expenses:
Property Expenses	24,700	22,662	49,277	45,722
General and Administrative	5,388	5,916	11,844	11,475
Impairment of Real Estate	1,429	0	1,429	19
Depreciation and Other Amortization	26,179	26,133	50,307	53,539
Total Expenses	57,696	54,711	112,857	110,755
Other Income (Expense):
Interest Income	621	697	1,207	1,643
Interest Expense	(17,284)	(19,695)	(34,932)	(40,904)
Amortization of Deferred Financing Costs	(788)	(799)	(1,590)	(1,622)
Mark-to-Market Gain (Loss) on Interest Rate Protection Agreements	56	(429)	52	(305)
Loss from Retirement of Debt	(4,222)	(6,223)	(5,372)	(6,222)
Total Other Income (Expense)	(21,617)	(26,449)	(40,635)	(47,410)
Loss from Continuing Operations Before Equity in Income of Other Real Estate Partnerships, Equity in Income of Joint Ventures, Gain on Change in Control of Interests and Income Tax (Provision) Benefit	(4,567)	(9,859)	(5,311)	(16,756)
Equity in Income of Other Real Estate Partnerships	2,399	2,468	4,571	3,566
Equity in Income of Joint Ventures	27	37	47	128
Gain on Change in Control of Interests	0	0	0	776
Income Tax (Provision) Benefit	(3)	(5,354)	59	(5,263)
Loss from Continuing Operations	(2,144)	(12,708)	(634)	(17,549)
Discontinued Operations:
Income Attributable to Discontinued Operations	56	949	230	695
Gain on Sale of Real Estate	13,481	1,415	10,407	7,614
Income from Discontinued Operations	13,537	2,364	10,637	8,309
Income (Loss) Before Gain on Sale of Real Estate	11,393	(10,344)	10,003	(9,240)
Gain on Sale of Real Estate	0	0	262	0
Net Income (Loss)	11,393	(10,344)	10,265	(9,240)
Less: Preferred Unit Distributions	(2,277)	(4,798)	(6,114)	(9,560)
Less: Redemption of Preferred Units	(3,546)	0	(3,546)	0
Net Income (Loss) Available to Unitholders and Participating Securities	5,570	(15,142)	605	(18,800)
Basic and Diluted Earnings Per Unit:
Loss from Continuing Operations Available to Unitholders	$ (0.07)	$ (0.19)	$ (0.09)	$ (0.29)
Income from Discontinued Operations Attributable to Unitholders	$ 0.12	$ 0.03	$ 0.10	$ 0.09
Net Income (Loss) Available to Unitholders	$ 0.05	$ (0.16)	$ 0.01	$ (0.20)
Distributions Per Unit	$ 0.085	$ 0.00	$ 0.17	$ 0.00
Weighted Average Units Outstanding	112,808	93,106	109,163	92,458
Net Income (Loss) Available to Unitholders Attributable to:
General Partner	5,325	(14,304)	580	(17,755)
Limited Partners	245	(838)	25	(1,045)
Net Income (Loss) Available to Unitholders and Participating Securities	$ 5,570	$ (15,142)	$ 605	$ (18,800)