Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Net Income Per Share Basic And Diluted

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share information):

	Year Ended December 31,
	2016		2015		2014
Numerator:
Net income	$	536,112	$	319,361	$	251,723
Denominator:
Denominator for basic earnings per share - weighted-average shares outstanding	155,134		158,874		169,879
Effect of dilutive employee stock awards:
Employee stock awards	1,950		1,488		1,391
Denominator for diluted earnings per share - weighted-average shares outstanding	157,084		160,362		171,270
Basic earnings per share	$	3.46	$	2.01	$	1.48
Diluted earnings per share	$	3.41	$	1.99	$	1.47
Anti-dilutive weighted-average shares from stock awards	322		2,151		3,026