Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

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 March 31,
	2014		2013
Net income for basic and diluted earnings per share	$	26,457	$	76,226
Weighted-average common shares outstanding	221,295		219,097
Dilutive effect of stock options, performance share awards and restricted stock awards	1,376		1,387
Diluted weighted-average shares outstanding	222,671		220,484
Basic earnings per share	$	0.12	$	0.35
Diluted earnings per share	$	0.12	$	0.35