Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share ("EPS") for the periods presented (in thousands, except per share amounts):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Net income	$	67,618	$	45,805	$	130,512	$	87,867
Weighted-average shares used to calculate basic EPS	79,479		77,923		79,361		75,383
Effect of dilutive securities:
Employee equity awards	273		585		385		625
Weighted-average shares used to calculate diluted EPS	79,752		78,508		79,746		76,008
Basic EPS	$	0.85	$	0.59	$	1.64	$	1.17
Diluted EPS	$	0.85	$	0.58	$	1.64	$	1.16