Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2018

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				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
	(in thousands, except per share data)
Numerator:
Net income	$	10,293	$	7,202	$	19,435	$	29,132
Denominator:
Weighted-average shares used in computing net income per share:
Basic	38,987		37,277		38,843		36,887
Effect of potentially dilutive securities:
Common stock options	2,610		2,003		2,576		2,110
Restricted stock units	618		255		655		210
Diluted	42,215		39,535		42,074		39,207
Net income per share:
Basic	$	0.26	$	0.19	$	0.50	$	0.79
Diluted	$	0.24	$	0.18	$	0.46	$	0.74

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		Six Months Ended
	June 30,		June 30,
	2018	2017	2018	2017
	(in thousands)
Common stock options	125	1,261	81	1,307
Restricted stock units	2	9	30	6
	127	1,270	111	1,313