Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The computations for basic and diluted net income per share are as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
	(in thousands, except per share data)
Numerator:
Net income	$	8,452	$	4,996	$	37,584	$	13,317
Denominator:
Weighted-average shares used in computing net income per share:
Basic	37,703		35,477		37,162		35,074
Effect of potentially dilutive securities:
Common stock options	2,199		3,103		2,161		3,089
Restricted stock units	397		132		278		42
Diluted	40,299		38,712		39,601		38,205
Net income per share:
Basic	$	0.22	$	0.14	$	1.01	$	0.38
Diluted	$	0.21	$	0.13	$	0.95	$	0.35

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Potentially dilutive securities not included in the calculation of diluted net income per share because doing so would be antidilutive are as follows:

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2017	2016	2017	2016
	(in thousands)
Common stock options	651	2,881	1,244	3,594
Restricted stock units	—	—	—	38
	651	2,881	1,244	3,632