Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
REVENUES
Rental income	$ 78,191	$ 72,099
Mortgage interest	2,937	2,292
Other operating	1,456	1,774
Revenues	82,584	76,165
EXPENSES
Property operating	29,826	28,285
General and administrative	6,541	5,261
Depreciation	21,852	20,479
Amortization	2,689	2,522
Bad debt, net of recoveries	(12)	(41)
Total Expenses	60,896	56,506
OTHER INCOME (EXPENSE)
Interest expense	(19,795)	(18,379)
Interest and other income, net	232	216
Total other income (expense)	(19,563)	(18,163)
INCOME FROM CONTINUING OPERATIONS	2,125	1,496
DISCONTINUED OPERATIONS
Income from discontinued operations	487	2,380
Impairments	(3,630)	(4,170)
Gain on sales of real estate properties	0	3,428
INCOME (LOSS) FROM DISCONTINUED OPERATIONS	(3,143)	1,638
NET INCOME (LOSS)	(1,018)	3,134
Less: Net loss attributable to noncontrolling interests	19	0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$ (999)	$ 3,134
BASIC EARNINGS (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations (in dollars per share)	$ 0.02	$ 0.02
Discontinued operations (in dollars per share)	$ (0.03)	$ 0.02
Net income (loss) attributable to common stockholders (in dollars per share)	$ (0.01)	$ 0.04
DILUTED EARNINGS (LOSS) PER COMMON SHARE:
Income (loss) from continuing operations (in dollars per share)	$ 0.02	$ 0.02
Discontinued operations (in dollars per share)	$ (0.03)	$ 0.02
Net income (loss) attributable to common stockholders (in dollars per share)	$ (0.01)	$ 0.04
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING - BASIC (in shares)	86,894,336	76,426,709
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING - DILUTED (in shares)	88,382,436	77,641,042
DIVIDENDS DECLARED, PER COMMON SHARE, DURING THE PERIOD (in dollars per share)	$ 0.30	$ 0.30