Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Reconciliation of basic and diluted earnings per share

The following is a reconciliation of basic and diluted earnings per share for the years presented in the consolidated statements of income:

	Years ended December 31,
	2012						2011						2010
	Net		Weighted average		Per share		Net		Weighted average		Per share		Net		Weighted average		Per share
(In thousands, except per share data)	income		shares		amount		income		shares		amount		income		shares		amount
Basic earnings per share	$	54,558		33,379	$	1.63	$	57,901		33,662	$	1.72	$	57,404		34,275	$	1.67
Effect of dilutive securities
Stock based compensation				340						262						234
Diluted earnings per share	$	54,558		33,719	$	1.62	$	57,901		33,924	$	1.71	$	57,404		34,509	$	1.66