Condensed Consolidated Statements Of Income And Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Property revenues
Rental revenues	$ 186,857		$ 178,964
Other property revenues	28,577		26,965
Total property revenues	215,434		205,929
Property expenses
Property operating and maintenance	52,998		50,747
Real estate taxes	25,413		23,577
Total property expenses	78,411		74,324
Non-property income
Fee and asset management	1,563		3,023
Interest and other income	60		288
Income on deferred compensation plans	1,864		681
Total non-property income	3,487		3,992
Other expenses
Property management	5,962		5,839
Fee and asset management	1,076		1,259
General and administrative	9,748		9,545
Interest	24,612		23,133
Depreciation and amortization	61,530		57,396
Amortization of deferred financing costs	798		841
Expense on deferred compensation plans	1,864		681
Total other expenses	105,590		98,694
Gain on sale of operating properties, including land	85,192		354
Equity in income of joint ventures	1,382	[1]	4,290	[1]
Income from continuing operations before income taxes	121,494		41,547
Income tax expense	(429)		(474)
Income from continuing operations	121,065		41,073
Net income	121,065		41,073
Less income allocated to non-controlling interests from continuing operations	(5,466)		(1,037)
Net income attributable to common shareholders	115,599		40,036
Earnings per common share – basic	$ 1.29		$ 0.45
Earnings per common share – diluted	$ 1.27		$ 0.45
Distributions declared per common share	$ 0.70		$ 0.66
Weighted average number of common shares outstanding – basic	88,987		87,651
Weighted average number of common shares outstanding – diluted	90,464		88,824
Condensed Consolidated Statements of Comprehensive Income:
Net income	121,065		41,073
Other comprehensive income
Reclassification of net loss on cash flow hedging activities, prior service cost and net loss on post retirement obligation	37		15
Comprehensive income	121,102		41,088
Less income allocated to non-controlling interests from continuing operations	(5,466)		(1,037)
Comprehensive income attributable to common shareholders	$ 115,636		$ 40,051

[1] Equity in income excludes our ownership interest of fee income from various services provided by us to the funds.