Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Employee Benefit Plans (Tables)

v2.4.0.8
Stock-Based Compensation and Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Fair Values of Stock Options
The fair values of stock options were estimated at their respective grant date using the following assumptions:
Stock Options
 
Nine Months Ended
September 30,
 
2013
 
2012
Weighted-average grant date fair value per share
$
3.24

 
$
2.37

Risk-free interest rate
0.71
%
 
0.88
%
Dividend yield
—

 
—

Expected life (years)
4.75

 
4.84

Volatility
56.00
%
 
55.91
%
Fair value of employee stock purchase rights
Employee Stock Purchase Rights
 
Nine Months Ended
September 30,
 
2013
 
2012
Weighted-average grant date fair value per share
$
1.85

 
$
1.28

Risk-free interest rate
0.09
%
 
0.15
%
Dividend yield
—

 
—

Expected life (years)
0.50

 
0.50

Volatility
41.58
%
 
46.60
%
Stock-Based Compensation
The Company recognized stock-based compensation in the statements of operations as follows:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2013
 
2012
 
2013
 
2012
Cost of net revenue
$
29

 
$
23

 
$
79

 
$
61

Research and development
2,183

 
1,661

 
6,095

 
4,590

Selling, general and administrative
1,251

 
925

 
3,417

 
2,514

 
$
3,463

 
$
2,609

 
$
9,591

 
$
7,165