Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Diluted, by Common Class

The basic and diluted earnings per share (“EPS”), and the basic and diluted weighted average shares outstanding for all periods as presented in the accompanying Consolidated Statements of Income are shown below :

	For the year ended December 31,
	(In thousands, except per share amounts)
Earnings per share:	2012		2011		2010
Basic earnings per common share	$	1.91	$	1.89	$	1.69
Diluted earnings per common share	$	1.80	$	1.75	$	1.51
Basic weighted average shares outstanding	36,948		37,742		34,845
Diluted weighted average shares outstanding	39,100		40,889		39,018

Schedule of Earnings Per Share, Diluted

To calculate diluted earnings per share, interest expense related to convertible debt excluding imputed interest, was added back to net income as follows:

	For the year ended December 31,
	(in thousands, except per share amounts)
	2012		2011		2010
Net income	$	70,569	$	71,378	$	59,019
Convertible debt interest (excludes imputed interest)	—		—		10
Net income for diluted earnings per share purposes	$	70,569	$	71,378	$	59,029
Diluted shares outstanding	39,100		40,889		39,018
Diluted earnings per common share	$	1.80	$	1.75	$	1.51

Schedule of Weighted Average Number of Shares

Diluted shares outstanding determined as follows for each years ending December 31, 2012, 2011, and 2010.

	For the year ended December 31,
	(in thousands)
	2012	2011	2010
Basic weighted average shares outstanding	36,948	37,742	34,845
Incremental shares for common stock equivalents	2,152	3,147	4,173
Diluted shares outstanding	39,100	40,889	39,018