Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation and Employee Benefit Plans (Tables)

v3.19.3.a.u2
Stock-Based Compensation and Employee Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Stock-Based Compensation
The Company recognizes stock-based compensation expense in the consolidated statements of operations, based on the department to which the related employee reports, as follows:
 
Years Ended December 31,
 
2019
 
2018
 
2017
 
(in thousands)
Cost of net revenue
$
577

 
$
489

 
$
332

Research and development
16,545

 
17,953

 
16,190

Selling, general and administrative
14,938

 
13,279

 
11,016

Restructuring expense

 

 
5,130

 
$
32,060

 
$
31,721

 
$
32,668


Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
A summary of the Company’s restricted stock unit activity is as follows:
 
Number of Shares
(in thousands)
 
Weighted-Average Grant-Date Fair Value per Share
Outstanding at December 31, 2018
3,263

 
$
20.23

  Granted
1,580

 
23.23

  Vested
(1,541
)
 
20.16

  Canceled
(378
)
 
21.52

Outstanding at December 31, 2019
2,924

 
21.72


Share-based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]
A summary of the Company’s performance-based restricted stock unit activity is as follows:
 
Number of Shares
(in thousands)
 
Weighted-Average Grant-Date Fair Value per Share
Outstanding at December 31, 2018

 
$

  Granted(1)
445

 
22.21

Outstanding at December 31, 2019
445

 
22.21

________________
(1) Number of shares granted is based on the maximum percentage achievable in the performance-based restricted stock unit award.
Fair Value of Employee Stock Purchase Rights
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:
 
Years Ended December 31,
 
2019
 
2018
 
2017
Weighted-average grant date fair value per share
$5.48 - 6.61

 
$5.01 - $5.37

 
$6.20 - $7.46

Risk-free interest rate
1.59 - 2.43%

 
2.09 - 2.51%

 
0.60 - 1.39%

Dividend yield
%
 
%
 
%
Expected term (in years)
0.5

 
0.5

 
0.38 - 0.50

Volatility
40.47 - 43.14%

 
38.82 - 46.17%

 
29.56 - 49.94%


Share-based Payment Arrangement, Option, Activity [Table Text Block]
A summary of the Company’s stock option activity is as follows:
 
Number of Options
(in thousands)
 
Weighted-Average Exercise Price
 
Weighted-Average Contractual Term
(in years)
 
Aggregate Intrinsic Value
(in thousands)
Outstanding at December 31, 2018
2,659

 
$
10.27

 
 
 
 
Exercised
(1,300
)
 
7.28

 
 
 
 
Canceled
(22
)
 
18.09

 
 
 
 
Outstanding at December 31, 2019
1,337

 
$
13.05

 
2.56
 
$
11,259

Vested and expected to vest at December 31, 2019
1,329

 
$
13.02

 
2.55
 
$
11,239

Exercisable at December 31, 2019
1,094

 
$
11.87

 
1.93
 
$
10,549


Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The fair values of stock options granted in 2018 and 2017 were estimated using the Black-Scholes option pricing model on the grant date using the following assumptions:
 
Years Ended December 31,
 
2018
 
2017(1)
Weighted-average grant date fair value per share
$
8.14

 
8.77 - 21.04

Risk-free interest rate
2.76
%
 
1.29% - 1.99%

Dividend yield
%
 
%
Expected term (in years)
5.50

 
1.6 - 6.0

Volatility
44.30
%
 
45.39% - 50.32%