Three Months Ended September 30,

Nine Months Ended September 30,

2014

2013

2014

2013

Numerator:

Net income

$

11,221

$

7,410

$

26,635

$

15,399

Denominator:

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

38,785

37,910

38,646

37,079

Effect of dilutive securities

942

1,099

972

1,340

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

39,727

39,009

39,618

38,419

Net income per share - basic

$

0.29

$

0.20

$

0.69

$

0.42

Net income per share - diluted

$

0.28

$

0.19

$

0.67

$

0.40