Consolidated Statements Of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Rentals, net	$ 472,446	$ 517,836	$ 563,183
Other	14,179	13,311	9,980
Total Revenues	486,625	531,147	573,163
Operating Expenses:
Depreciation and amortization	135,674	161,838	167,101
Operating	94,620	90,554	109,310
Real estate taxes, net	60,813	69,268	75,636
Impairment loss	74	10,120	15,257
General and administrative	35,914	25,040	28,052
Total Operating Expenses	327,095	356,820	395,356
Interest expense, net	(57,601)	(63,348)	(80,326)
Interest and other income, net	11,003	2,807	7,532
Gain on sale of property	189,914	207,865	218,611
Total Other Income	143,316	147,324	145,817
Income Before Income Taxes and Equity in Earnings of Real Estate Joint Ventures and Partnerships	302,846	321,651	323,624
(Provision) Benefit for Income Taxes	(1,040)	(1,378)	17
Equity in Earnings of Real Estate Joint Ventures and Partnerships, net	20,769	25,070	27,074
Net Income	322,575	345,343	350,715
Less: Net Income Attributable to Noncontrolling Interests	(7,140)	(17,742)	(15,441)
Net Income Attributable to Common Shareholders	$ 315,435	$ 327,601	$ 335,274
Earnings Per Common Share - Basic:
Net income attributable to common shareholders - basic (in dollars per share)	$ 2.47	$ 2.57	$ 2.62
Earnings Per Common Share - Diluted:
Net income attributable to common shareholders - diluted (in dollars per share)	$ 2.44	$ 2.55	$ 2.60