Consolidated Statements Of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Rentals, net	$ 516,502	$ 560,643	$ 537,265
Other	14,645	12,520	12,290
Total Revenues	531,147	573,163	549,555
Operating Expenses:
Depreciation and amortization	161,838	167,101	162,535
Operating	90,554	109,310	98,855
Real estate taxes, net	69,268	75,636	66,358
Impairment loss	10,120	15,257	98
General and administrative	25,040	28,052	26,607
Total Operating Expenses	356,820	395,356	354,453
Interest expense, net	(63,348)	(80,326)	(83,003)
Interest and other income (expense)	2,807	7,532	1,910
Gain on sale of property	207,865	218,611	100,714
Gain on sale and acquisition of real estate joint venture and partnership interests	0	0	48,322
Total Other Income	147,324	145,817	67,943
Income Before Income Taxes and Equity in Earnings of Real Estate Joint Ventures and Partnerships	321,651	323,624	263,045
(Provision) Benefit for Income Taxes	(1,378)	17	(6,856)
Equity in Earnings of Real Estate Joint Ventures and Partnerships, net	25,070	27,074	20,642
Net Income	345,343	350,715	276,831
Less: Net Income Attributable to Noncontrolling Interests	(17,742)	(15,441)	(37,898)
Net Income Attributable to Common Shareholders	$ 327,601	$ 335,274	$ 238,933
Earnings Per Common Share - Basic:
Net income attributable to common shareholders - basic (in dollars per share)	$ 2.57	$ 2.62	$ 1.90
Earnings Per Common Share - Diluted:
Net income attributable to common shareholders - diluted (in dollars per share)	$ 2.55	$ 2.60	$ 1.87