Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUE
Rental income	$ 166,112	$ 154,308	$ 494,688	$ 460,136
Other property income	3,622	3,480	11,347	9,661
Mortgage interest income	1,204	1,242	3,678	3,770
Total revenue	170,938	159,030	509,713	473,567
EXPENSES
Rental expenses	31,908	29,045	100,443	86,755
Real estate taxes	20,374	18,400	58,238	53,604
General and administrative	8,374	7,543	24,202	22,902
Depreciation and amortization	42,660	39,341	127,403	119,615
Total operating expenses	103,316	94,329	310,286	282,876
OPERATING INCOME	67,622	64,701	199,427	190,691
Other interest income	2	70	45	165
Interest expense	(23,422)	(25,762)	(69,772)	(80,314)
Early extinguishment of debt	0	0	0	(3,399)
Income from real estate partnership	446	381	909	1,065
INCOME FROM CONTINUING OPERATIONS	44,648	39,390	130,609	108,208
DISCONTINUED OPERATIONS
Discontinued operations - income	0	115	0	942
Discontinued operations - gain on sale of real estate	0	23,861	0	23,861
Results from discontinued operations	0	23,976	0	24,803
INCOME BEFORE GAIN ON SALE OF REAL ESTATE	44,648	63,366	130,609	133,011
Gain on sale of real estate	0	0	0	4,994
Gain on sale of real estate in real estate partnership	4,401	0	4,401	0
NET INCOME	49,049	63,366	135,010	138,005
Net income attributable to noncontrolling interests	(1,974)	(1,268)	(5,637)	(3,780)
NET INCOME ATTRIBUTABLE TO THE TRUST	47,075	62,098	129,373	134,225
Dividends on preferred shares	(136)	(136)	(406)	(406)
NET INCOME AVAILABLE FOR COMMON SHAREHOLDERS	46,939	61,962	128,967	133,819
EARNINGS PER COMMON SHARE, BASIC
Continuing operations	$ 0.62	$ 0.57	$ 1.84	$ 1.58
Discontinued operations	$ 0.00	$ 0.37	$ 0.00	$ 0.38
Gain on sale of real estate	$ 0.07	$ 0.00	$ 0.07	$ 0.08
Earnings per common share, basic, total	$ 0.69	$ 0.94	$ 1.91	$ 2.04
Weighted average number of common shares, basic	67,559	65,504	67,095	65,118
EARNINGS PER COMMON SHARE, DILUTED
Continuing operations	$ 0.62	$ 0.57	$ 1.84	$ 1.58
Discontinued operations	$ 0.00	$ 0.37	$ 0.00	$ 0.38
Gain on sale of real estate	$ 0.07	$ 0.00	$ 0.07	$ 0.08
Earnings per common share, diluted, total	$ 0.69	$ 0.94	$ 1.91	$ 2.04
Weighted average number of common shares, diluted	67,732	65,647	67,261	65,271
COMPREHENSIVE INCOME	51,349	62,195	134,667	146,854
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST	$ 49,375	$ 60,927	$ 129,030	$ 143,074