Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUE
Rental income	$ 223,777	$ 212,048	$ 664,834	$ 620,741
Other property income	5,183	5,171	12,942	10,429
Mortgage interest income	793	734	2,284	2,221
Total revenue	229,753	217,953	680,060	633,391
EXPENSES
Rental expenses	41,909	41,250	126,587	119,487
Real estate taxes	29,086	27,492	85,841	79,104
General and administrative	7,638	9,103	23,980	26,013
Depreciation and amortization	60,778	55,611	177,269	159,656
Total operating expenses	139,411	133,456	413,677	384,260
OPERATING INCOME	90,342	84,497	266,383	249,131
Other interest income	319	79	657	253
Interest expense	(28,166)	(26,287)	(82,116)	(73,952)
Loss from real estate partnerships	(1,440)	(182)	(2,693)	(296)
INCOME FROM CONTINUING OPERATIONS	61,055	58,107	182,231	175,136
Gain on sale of real estate, net	3,125	50,775	10,413	69,949
NET INCOME	64,180	108,882	192,644	245,085
Net income attributable to noncontrolling interests	(1,622)	(2,105)	(5,244)	(5,827)
NET INCOME ATTRIBUTABLE TO THE TRUST	62,558	106,777	187,400	239,258
Dividends on preferred shares	(2,010)	(177)	(6,031)	(448)
NET INCOME AVAILABLE FOR COMMON SHAREHOLDERS	$ 60,548	$ 106,600	$ 181,369	$ 238,810
EARNINGS PER COMMON SHARE, BASIC:
Net income available for common shareholders	$ 0.82	$ 1.47	$ 2.47	$ 3.31
Weighted average number of common shares	73,400	72,091	73,100	71,983
EARNINGS PER COMMON SHARE, DILUTED:
Net income available for common shareholders	$ 0.82	$ 1.47	$ 2.47	$ 3.30
Weighted average number of common shares	73,408	72,206	73,136	72,110
COMPREHENSIVE INCOME	$ 63,895	$ 109,240	$ 192,749	$ 246,920
COMPREHENSIVE INCOME ATTRIBUTABLE TO THE TRUST	$ 62,273	$ 107,135	$ 187,505	$ 241,093