Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Employee Benefit Plans (Tables)

v3.3.0.814
Stock-Based Compensation and Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Fair Value of Employee Stock Purchase Rights
Employee Stock Purchase Rights
 
Nine Months Ended
September 30,
 
2015
 
2014
Weighted-average grant date fair value per share
$
2.25

 
$
2.47

Risk-free interest rate
0.09
%
 
0.05
%
Dividend yield
—
%
 
—
%
Expected life (years)
0.50

 
0.50

Volatility
32.65
%
 
47.75
%
The fair values of stock options and employee stock purchase rights (related to the Company's ESPP) were estimated at their respective grant date using the following assumptions:
Stock Options
 
Nine Months Ended
September 30,
 
2014
Weighted-average grant date fair value per share
$
4.03

Risk-free interest rate
1.70
%
Dividend yield
—
%
Expected life (years)
4.56

Volatility
51.00
%
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,
 
2015
 
2014
 
2015
 
2014
Cost of net revenue
$
73

 
$
35

 
$
169

 
$
96

Research and development
3,496

 
2,574

 
8,889

 
7,152

Selling, general and administrative
1,442

 
1,393

 
4,466

 
3,832

 
$
5,011

 
$
4,002

 
$
13,524

 
$
11,080