Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share

	Year Ended December 31,
	2011			2010			2009
	(In thousands, except per share data)
NUMERATOR
Income from continuing operations	$	131,554		$	125,851		$	101,325
Less: Preferred share dividends	(541		)	(541		)	(541		)
Less: Income from continuing operations attributable to noncontrolling interests	(5,475		)	(5,247		)	(5,568		)
Less: Earnings allocated to unvested shares	(705		)	(572		)	(510		)
Income from continuing operations available for common shareholders	124,833			119,491			94,706
Results from discontinued operations attributable to the Trust	17,838			1,776			2,547
Gain on sale of real estate	—			410			—
Net income available for common shareholders, basic and diluted	$	142,671		$	121,677		$	97,253
DENOMINATOR
Weighted average common shares outstanding—basic	62,438			61,182			59,704
Effect of dilutive securities:
Stock options	165			142			126
Weighted average common shares outstanding—diluted	62,603			61,324			59,830
EARNINGS PER COMMON SHARE, BASIC
Continuing operations	$	2.00		$	1.95		$	1.59
Discontinued operations	0.29			0.03			0.04
Gain on sale of real estate	—			0.01			—
	$	2.29		$	1.99		$	1.63
EARNINGS PER COMMON SHARE, DILUTED
Continuing operations	$	1.99		$	1.94		$	1.59
Discontinued operations	0.29			0.03			0.04
Gain on sale of real estate	—			0.01			—
	$	2.28		$	1.98		$	1.63
Income from continuing operations attributable to the Trust	$	126,079		$	120,604		$	95,757