Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Reconciliation between Basic and Diluted Weighted Average Shares Outstanding:

The following is a reconciliation between basic and diluted weighted average shares outstanding:

	For the three months ended March 31,
(in thousands, except per share data)	2014			2013
Net income	$	52,415		$	60,131
Net income attributable to unvested awarded performance stock		(1,376	)		(1,308	)
Net income attributable to common shares	$	51,039		$	58,823
Weighted average number of common shares outstanding – basic		145,429			143,926
Less unvested awarded performance stock included in weighted average number of common shares outstanding – basic		(3,819	)		(3,130	)
Weighted average number of common shares outstanding for basic earnings per common share		141,610			140,796
Dilutive effect of stock options		1,699			2,151
Weighted average number of shares outstanding – diluted		143,309			142,947
Net income per share:
Basic	$	0.36		$	0.42
Diluted	$	0.36		$	0.41