Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2016

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,
	2016		2015
Net income for basic and diluted earnings per share	$	99,140	$	45,230
Weighted-average common shares outstanding	216,914		219,626
Dilutive effect of stock options, performance share awards and restricted stock awards	955		1,216
Diluted weighted-average shares outstanding	217,869		220,842
Basic earnings per share	$	0.46	$	0.21
Diluted earnings per share	$	0.46	$	0.20