Net Income Per Share

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Net Income Per Share

Note I—Net Income Per Share

The calculation of net income per share for the three and six months ended June 30, 2014 and 2013 is reflected in the following table (in thousands, except per share amounts):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Basic net income per share:
Net income	$	75,140	$	63,089	$	136,691	$	118,952
Income allocated to participating securities—basic		—		1		—		4
Net income available to common stockholders—basic	$	75,140	$	63,088	$	136,691	$	118,948
Basic weighted average shares		134,699		136,385		135,014		136,845
Basic net income per share	$	.56	$	.46	$	1.01	$	.87
Diluted net income per share:
Net income	$	75,140	$	63,089	$	136,691	$	118,952
Income allocated to participating securities—diluted		—		1		—		4
Net income available to common stockholders—diluted	$	75,140	$	63,088	$	136,691	$	118,948
Basic weighted average shares		134,699		136,385		135,014		136,845
Dilutive effect of potential common shares		1,009		1,274		918		1,179
Diluted weighted average shares		135,708		137,659		135,932		138,024
Diluted net income per share	$	.55	$	.46	$	1.01	$	.86

Potential common shares include the dilutive effect of stock options, unvested performance-based restricted stock, restricted stock which contains forfeitable rights to dividends, and stock units. The weighted average diluted common shares outstanding for the three and six months ended June 30, 2014 and 2013, excludes the effect of the following (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Total number of anti-dilutive potential common shares		322		165		171		83