Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2014

The calculation of net income per share for the three years ended December 31, 2014 is reflected in the following table (in thousands, except per share amounts):



	Years Ended December 31,
	2014		2013		2012
Basic net income per share:
Net income	$	305,928	$	252,195	$	209,942
Income allocated to participating securities	—		3		1,081
Net income available to common stockholders	$	305,928	$	252,192	$	208,861
Basic weighted average shares	134,358		136,153		138,201
Basic net income per share	$	2.28	$	1.85	$	1.51
Diluted net income per share:
Net income	$	305,928	$	252,195	$	209,942
Income allocated to participating securities	—		3		1,075
Net income available to common stockholders	$	305,928	$	252,192	$	208,867
Basic weighted average shares	134,358		136,153		138,201
Dilutive effect of potential common shares	1,183		1,436		1,208
Diluted weighted average shares	135,541		137,589		139,409
Diluted net income per share	$	2.26	$	1.83	$	1.50

Weighted Average Diluted Common Shares Outstanding

The weighted average diluted common shares outstanding for the years ended December 31, 2014, 2013 and 2012, excludes the effect of the following (in thousands):



	Years Ended December 31,
	2014	2013	2012
Total number of anti-dilutive potential common shares	1	—	227