Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2015

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,
	2015		2014		2015		2014
	(in thousands, except per share data)
Numerator:
Net income	$	4,123	$	3,105	$	10,441	$	4,331
Denominator:
Weighted-average shares used in computing net income per share:
Basic	34,119		33,120		33,967		32,820
Effect of potentially dilutive securities:
Common stock options	3,819		3,960		4,235		4,186
Diluted	37,938		37,080		38,202		37,006
Net income per share:
Basic	$	0.12	$	0.09	$	0.31	$	0.13
Diluted	$	0.11	$	0.08	$	0.27	$	0.12

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,
	2015	2014	2015	2014
	(in thousands)
Common stock options	1,889	1,813	1,409	1,483