Three months ended March 31,

2013

2012

Numerator:

Net income

$

2,499

$

2,995

Denominator:

Weighted average outstanding shares used to compute basic net income per share

36,259

34,105

Effect of dilutive securities

1,449

1,433

Weighted average outstanding shares used to compute diluted net income per share

37,708

35,538

Net income per share - basic

$

0.07

$

0.09

Net income per share - diluted

$

0.07

$

0.08