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)
 6 Months Ended
Jun. 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
 
Six Months Ended
June 30,
 
2013
 
2012
Weighted-average grant date fair value per share
$
3.24

 
$
2.32

Risk-free interest rate
0.71
%
 
0.92
%
Dividend yield
—

 
—

Expected life (years)
4.75

 
4.90

Volatility
56.00
%
 
55.73
%
Fair value of employee stock purchase rights
Employee Stock Purchase Rights
 
Six Months Ended
June 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
June 30,
 
Six Months Ended
June 30,
 
2013
 
2012
 
2013
 
2012
Cost of net revenue
$
26

 
$
20

 
$
50

 
$
38

Research and development
2,158

 
1,481

 
3,912

 
2,929

Selling, general and administrative
1,155

 
832

 
2,166

 
1,589

 
$
3,339

 
$
2,333

 
$
6,128

 
$
4,556