Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Reconciliation between Basic and Diluted Earnings Per Share

A reconciliation between basic and diluted earnings per share is as follows (in thousands, except per share data):

	Quarter Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Net income for basic and diluted earnings per share	$	93,491	$	53,731	$	171,901	$	133,574
Weighted-average common shares outstanding		217,028		215,043		216,771		214,680
Dilutive effect of stock options and restricted stock awards		2,342		2,518		2,745		2,624
Diluted weighted-average shares outstanding		219,370		217,561		219,516		217,304
Basic earnings per share	$	0.43	$	0.25	$	0.79	$	0.62
Diluted earnings per share	$	0.43	$	0.25	$	0.78	$	0.61