Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
REVENUE
Rental income	$ 212,048	$ 197,469	$ 620,741	$ 585,712
Other property income	5,171	2,759	10,429	8,559
Mortgage interest income	734	929	2,221	3,211
Total revenue	217,953	201,157	633,391	597,482
EXPENSES
Rental expenses	41,250	38,588	119,487	118,385
Real estate taxes	27,492	24,973	79,104	71,164
General and administrative	9,103	8,232	26,013	25,278
Depreciation and amortization	55,611	48,903	159,656	145,137
Total operating expenses	133,456	120,696	384,260	359,964
OPERATING INCOME	84,497	80,461	249,131	237,518
Other interest income	79	105	253	285
Interest expense	(26,287)	(24,313)	(73,952)	(71,143)
(Loss) income from real estate partnerships	(182)	0	(296)	41
INCOME FROM CONTINUING OPERATIONS	58,107	56,253	175,136	166,701
Gain on sale of real estate and change in control of interests, net	50,775	4,945	69,949	32,458
NET INCOME	108,882	61,198	245,085	199,159
Net income attributable to noncontrolling interests	(2,105)	(2,221)	(5,827)	(7,286)
NET INCOME ATTRIBUTABLE TO THE TRUST	106,777	58,977	239,258	191,873
Dividends on preferred shares	(177)	(136)	(448)	(406)
NET INCOME AVAILABLE FOR COMMON SHAREHOLDERS	$ 106,600	$ 58,841	$ 238,810	$ 191,467
EARNINGS PER COMMON SHARE, BASIC:
Net income available for common shareholders	$ 1.47	$ 0.82	$ 3.31	$ 2.70
Weighted average number of common shares	72,091	71,319	71,983	70,626
EARNINGS PER COMMON SHARE, DILUTED:
Net income available for common shareholders	$ 1.47	$ 0.82	$ 3.30	$ 2.70
Weighted average number of common shares	72,206	71,489	72,110	70,804
COMPREHENSIVE INCOME	$ 109,240	$ 63,097	$ 246,920	$ 197,875
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST	$ 107,135	$ 60,876	$ 241,093	$ 190,589