Earnings Per Share

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share

10.Earnings Per Share.

Basic and diluted earnings per common share were calculated as follows:

		Three months ended September 30, 2011
			Weighted
(In thousands, except per share data)	Net Earnings		Average Shares	Per Share
Basic earnings per common share …………	$	31,224	60,030	$	0.52
Effect of dilutive stock options ……………		—	474
Diluted earnings per common share ………	$	31,224	60,504	$	0.52

		Three months ended September 30, 2010
			Weighted
(In thousands, except per share data)	Net Earnings		Average Shares	Per Share
Basic earnings per common share …………	$	40,497	65,094	$	0.62
Effect of dilutive stock options ……………		—	652
Diluted earnings per common share ………	$	40,497	65,746	$	0.62

		Nine months ended September 30, 2011
			Weighted
(In thousands, except per share data)	Net Earnings		Average Shares	Per Share
Basic earnings per common share …………	$	115,342	61,944	$	1.86
Effect of dilutive stock options ……………		—	704
Diluted earnings per common share ………	$	115,342	62,648	$	1.84

		Nine months ended September 30, 2010
			Weighted
(In thousands, except per share data)	Net Earnings		Average Shares	Per Share
Basic earnings per common share …………	$	139,788	65,579	$	2.13
Effect of dilutive stock options ……………		—	766
Diluted earnings per common share ………	$	139,788	66,345	$	2.11

For the three months ended September 30, 2011 and 2010, the number of stock options that were outstanding but not included in the computation of diluted earnings per common share and, therefore anti-dilutive, were1,297,560and 2,366,676, respectively.

For the nine months ended September 30, 2011 and 2010, the number of stock options that were outstanding but not included in the computation of diluted earnings per common share and, therefore anti-dilutive, were 577,742and 2,044,471, respectively.