Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Common Share (Tables) [Abstract]

Earnings Per Common Share

Summarized basic and diluted earnings per common share were calculated as follows:

	Net Earnings		Weighted Average Shares	Per Share
	(In thousands, except per share data)
Year Ended December 31, 2012
Basic earnings per common share	$	183,492	58,913	$	3.11
Effect of dilutive stock options	—		492
Diluted earnings per common share	$	183,492	59,405	$	3.09

	Net Earnings		Weighted Average Shares	Per Share
	(In thousands, except per share data)
Year Ended December 31, 2011
Basic earnings per common share	$	164,637	61,188	$	2.69
Effect of dilutive stock options	—		701
Diluted earnings per common share	$	164,637	61,889	$	2.66

	Net Earnings		Weighted Average Shares	Per Share
	(In thousands, except per share data)
Year Ended December 31, 2010
Basic earnings per common share	$	171,642	65,104	$	2.64
Effect of dilutive stock options	—		799
Diluted earnings per common share	$	171,642	65,903	$	2.60