Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Common Share

The computation of basic and diluted earnings per common share is as follows:

	Year Ended December 31,
	2014			2013			2012
	(in thousands, except per share amounts)
Computation of Basic Earnings Per Share:
Numerator:
Net income from continuing operations	$	121,473		$	113,350		$	121,278
Net income from discontinued operations	1,687			359			335
Net income	123,160			113,709			121,613
Income allocated to participating securities	(1,075		)	(1,127		)	(1,281		)
Net income available to common shareholders	$	122,085		$	112,582		$	120,332
Denominator
Weighted average common shares outstanding -- basic	57,730			57,925			57,467
Basic earnings per share -- Continuing operations	$	2.08		$	1.94		$	2.09
Basic earnings per share -- Discontinued operations	0.03			—			—
	$	2.11		$	1.94		$	2.09
Computation of Diluted Earnings Per Share:
Numerator:
Net income from continuing operations	$	121,473		$	113,350		$	121,278
Net income from discontinued operations	1,687			359			335
Net income	123,160			113,709			121,613
Income allocated to participating securities	(1,069		)	(1,122		)	(1,299		)
Net income available to common shareholders	$	122,091		$	112,587		$	120,314
Denominator:
Weighted average common shares outstanding -- basic	57,730			57,925			57,467
Diluted effect of stock options and PVRSUs	526			410			186
Weighted average commons shares outstanding -- diluted	58,256			58,335			57,653
Diluted earnings per share -- Continuing operations	$	2.07		$	1.92		$	2.08
Diluted earnings per share -- Discontinued operations	0.03			0.01			0.01
	$	2.10		$	1.93		$	2.09