Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

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,
	2011						2010						2009
			Weighted						Weighted						Weighted
(In thousands, except share and per share data)	Net income		average shares		Per share amount		Net income		average shares		Per share amount		Net income		average shares		Per share amount
Basic earnings per share	$	57,901		33,662	$	1.72	$	57,404		34,275	$	1.67	$	52,011		33,723	$	1.54
Effect of dilutive securities
Stock based compensation				262						234						180
Diluted earnings per share	$	57,901		33,924	$	1.71	$	57,404		34,509	$	1.66	$	52,011		33,903	$	1.53