Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Employee Benefit Plans (Tables)

v3.10.0.1
Stock-Based Compensation and Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation
The Company recognizes stock-based compensation in the consolidated statements of operations, based on the department to which the related employee reports, as follows:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2018
 
2017
 
2018
 
2017
 
(in thousands)
 
(in thousands)
Cost of net revenue
$
131

 
$
93

 
$
357

 
$
231

Research and development
4,726

 
4,337

 
13,554

 
11,841

Selling, general and administrative
3,070

 
2,965

 
9,798

 
7,911

Restructuring
—

 
401

 
—

 
4,915

 
$
7,927

 
$
7,796

 
$
23,709

 
$
24,898

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity
A summary of the Company’s restricted stock unit and restricted stock award activity is as follows:
 
Number of Shares
(in thousands)
 
Weighted-Average Grant-Date Fair Value per Share
Outstanding at December 31, 2017
3,183

 
$
20.13

Granted
2,362

 
19.42

Vested
(1,342
)
 
18.57

Canceled
(488
)
 
20.71

Outstanding at September 30, 2018
3,715

 
20.18

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions
The fair values of employee stock purchase rights were estimated using the Black-Scholes option pricing model at their respective grant date using the following assumptions:
 
Nine Months Ended
 
September 30, 2018
Weighted-average grant date fair value per share
$
5.37

Risk-free interest rate
2.09
%
Dividend yield
—
%
Expected life (in years)
0.50

Volatility
46.00
%
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair values of stock options were estimated using the Black-Scholes option pricing model on the grant date using the following assumptions:
 
Nine Months Ended
 
September 30, 2018
Weighted-average grant date fair value per share
$
8.14

Risk-free interest rate
2.76
%
Dividend yield
—
%
Expected life (in years)
5.51

Volatility
44.30
%
Share-based Compensation, Stock Options, Activity
 
Number of Options
(in thousands)
 
Weighted-Average Exercise Price
 
Weighted-Average Contractual Term (in years)
 
Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2017
3,069

 
$
8.95

 
 
 
 
Granted
335

 
18.40

 
 
 
 
Exercised
(285
)
 
7.76

 
 
 
 
Canceled
(83
)
 
16.69

 
 
 
 
Outstanding at September 30, 2018
3,036

 
$
9.90

 
2.30
 
$
30,982

Vested and expected to vest at September 30, 2018
2,998

 
$
9.79

 
2.26
 
$
30,896

Exercisable at September 30, 2018
2,506

 
$
8.32

 
1.52
 
$
29,502