Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
REVENUES:
Rental and other property revenues	$ 269,525	$ 263,481	$ 805,749	$ 788,057
Asset management and tax credit revenues	11,885	9,711	28,772	24,208
Total revenues	281,410	273,192	834,521	812,265
OPERATING EXPENSES:
Property operating expenses	119,903	116,786	356,634	362,784
Investment management expenses	2,386	2,609	7,604	10,979
Depreciation and amortization	97,321	101,704	287,739	305,066
Provision for operating real estate impairment losses	149		149
General and administrative expenses	12,664	12,096	36,162	39,015
Other expenses, net	4,870	4,416	13,952	2,173
Total operating expenses	237,293	237,611	702,240	720,017
Operating income	44,117	35,581	132,281	92,248
Interest income	4,097	2,578	9,031	8,079
Recovery of (provision for) losses on notes receivable, net	233	(6)	180	(284)
Interest expense	(73,152)	(74,544)	(243,169)	(225,305)
Equity in losses of unconsolidated real estate partnerships	(4,987)	(15,653)	(8,432)	(11,799)
Gain on dispositions of unconsolidated real estate and other	3,095	883	5,115	5,368
Loss before income taxes and discontinued operations	(26,597)	(51,161)	(104,994)	(131,693)
Income tax benefit	1,110	4,385	5,704	11,042
Loss from continuing operations	(25,487)	(46,776)	(99,290)	(120,651)
Income from discontinued operations, net	30,968	18,510	50,959	65,881
Net income (loss)	5,481	(28,266)	(48,331)	(54,770)
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(5,464)	11,213	4,612	1,795
Net income (loss) attributable to the Partnership	17	(17,053)	(43,719)	(52,975)
Net income attributable to the Partnership's preferred unitholders	(14,971)	(13,492)	(40,441)	(39,918)
Net income attributable to participating securities	(58)	(2)	(169)
Net loss attributable to the Partnership's common unitholders	$ (15,012)	$ (30,547)	$ (84,329)	$ (92,893)
Earnings (loss) per common unit - basic and diluted (Note 9):
Loss from continuing operations attributable to the Partnership's common unitholders	$ (0.26)	$ (0.35)	$ (0.91)	$ (1.10)
Income from discontinued operations attributable to the Partnership's common unitholders	$ 0.14	$ 0.10	$ 0.25	$ 0.35
Net loss attributable to the Partnership's common unitholders	$ (0.12)	$ (0.25)	$ (0.66)	$ (0.75)
Weighted average common units outstanding, basic and diluted	128,656	124,739	127,336	124,601
Distributions declared per common unit	$ 0.12	$ 0.10	$ 0.36	$ 0.20