Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
REVENUE
Rental income	$ 192,935	$ 175,884	$ 388,243	$ 357,050
Other property income	3,488	4,420	5,800	6,885
Mortgage interest income	1,558	1,157	2,282	2,318
Total revenue	197,981	181,461	396,325	366,253
EXPENSES
Rental expenses	36,978	32,623	79,797	74,062
Real estate taxes	23,397	20,667	46,191	41,061
General and administrative	9,036	9,299	17,046	18,152
Depreciation and amortization	48,435	42,671	96,234	84,655
Total operating expenses	117,846	105,260	239,268	217,930
OPERATING INCOME	80,135	76,201	157,057	148,323
Other interest income	77	74	180	103
Interest expense	(23,101)	(23,445)	(46,830)	(47,613)
Early extinguishment of debt	0	(19,072)	0	(19,072)
Income from real estate partnerships	0	406	41	626
INCOME FROM CONTINUING OPERATIONS	57,111	34,164	110,448	82,367
Gain on change in control of interests and sale of real estate	1,787	11,509	27,513	11,509
NET INCOME	58,898	45,673	137,961	93,876
Net income attributable to noncontrolling interests	(2,957)	(2,041)	(5,065)	(4,058)
NET INCOME ATTRIBUTABLE TO THE TRUST	55,941	43,632	132,896	89,818
Dividends on preferred shares	(135)	(135)	(271)	(271)
NET INCOME AVAILABLE FOR COMMON SHAREHOLDERS	$ 55,806	$ 43,497	$ 132,625	$ 89,547
EARNINGS PER COMMON SHARE, BASIC
Continuing operations	$ 0.78	$ 0.46	$ 1.50	$ 1.13
Gain on change in control of interests and sale of real estate, net	0.01	0.17	0.38	0.17
Earnings per common share, basic	$ 0.79	$ 0.63	$ 1.88	$ 1.30
Weighted average number of common shares, basic	70,797	68,531	70,270	68,449
EARNINGS PER COMMON SHARE, DILUTED
Continuing operations	$ 0.77	$ 0.46	$ 1.50	$ 1.13
Gain on change in control of interests and sale of real estate, net	0.01	0.17	0.38	0.17
Earnings per common share, diluted	$ 0.78	$ 0.63	$ 1.88	$ 1.30
Weighted average number of common shares, diluted	70,974	68,713	70,451	68,638
COMPREHENSIVE INCOME	$ 58,490	$ 46,740	$ 134,778	$ 92,482
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST	$ 55,533	$ 44,699	$ 129,713	$ 88,424