Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Net Income Per Share

Schedule of computation of basic and diluted net income per share

	Three Months Ended September 30,				Nine Months Ended September 30,
(In thousands except per share data)	2017		2016		2017		2016
Numerator:
Net income, basic	$	23,767	$	15,033	$	75,758	$	34,065
Add: interest expense on 2023 Notes	1,410		1,429		4,231		—
Net income, diluted	$	25,177	$	16,462	$	79,989	$	34,065
Denominator:
Weighted-average shares used to compute basic net income per share	106,841		109,282		107,236		111,128
Dilutive effect of 2023 Notes	12,189		12,398		12,189		—
Dilutive effect of options and awards granted under equity incentive plan and employee stock purchase plan	766		313		695		455
Weighted-average shares used to compute diluted net income per share	119,796		121,993		120,120		111,583
Net income per share
Basic	$	0.22	$	0.14	$	0.71	$	0.31
Diluted	$	0.21	$	0.13	$	0.67	$	0.31

Schedule of anti-dilutive securities

	Three Months Ended September 30,		Nine Months Ended September 30,
(In thousands)	2017	2016	2017	2016
Outstanding options and awards granted under equity incentive plan and employee stock purchase plan	1,779	3,881	2,287	4,216
Shares issuable upon conversion of 2023 Notes	—	—	—	12,635
	1,779	3,881	2,287	16,851