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Employee Benefit Plans (Tables)
9 Months Ended
Oct. 03, 2021
Employee Benefits And Share Based Compensation [Abstract]  
Schedule of Stock Option Activity

Stock option activity during the nine months ended October 3, 2021 was as follows:

 

 

 

Number of

Shares

 

 

Weighted Average Exercise Price Per Share

 

 

 

(In thousands)

 

 

(In dollars)

 

Outstanding as of December 31, 2020

 

 

1,333

 

 

$

27.86

 

Exercised

 

 

(393

)

 

$

22.88

 

Outstanding as of October 3, 2021

 

 

940

 

 

$

29.93

 

 

 

Schedule of RSU Activity

RSU activity during the nine months ended October 3, 2021 was as follows:

 

 

 

Number

of Shares

 

 

Weighted Average Grant Date Fair Value Per Share

 

 

 

(In thousands)

 

 

(In dollars)

 

Outstanding as of December 31, 2020

 

 

1,584

 

 

$

30.66

 

Granted

 

 

731

 

 

$

38.77

 

Vested

 

 

(618

)

 

$

31.53

 

Cancelled

 

 

(114

)

 

$

33.25

 

Outstanding as of October 3, 2021

 

 

1,583

 

 

$

33.88

 

 

Schedule of Performance Shares Activity

Performance shares activity during the nine months ended October 3, 2021 was as follows:

 

 

Number

of Shares

 

 

Weighted Average Grant Date Fair Value Per Share

 

 

 

(In thousands)

 

 

(In dollars)

 

Outstanding as of December 31, 2020

 

 

141

 

 

$

28.22

 

Granted

 

 

152

 

 

$

37.58

 

Vested

 

 

 

 

$

 

Cancelled

 

 

 

 

$

 

Outstanding as of October 3, 2021

 

 

293

 

 

$

33.07

 

 

Schedule of Weighted Average Assumptions The following table sets forth the weighted average assumptions used to estimate the fair value of purchase rights granted under the ESPP during the three and nine months ended October 3, 2021 and September 27, 2020:

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

October 3,

2021

 

 

September 27,

2020

 

 

October 3,

2021

 

 

September 27,

2020

 

Expected life (in years)

 

 

0.5

 

 

 

0.5

 

 

 

0.5

 

 

 

0.5

 

Risk-free interest rate

 

 

0.05

%

 

 

0.12

%

 

 

0.05

%

 

 

0.72

%

Expected volatility

 

 

34.7

%

 

 

66.4

%

 

 

40.8

%

 

 

54.8

%

Dividend yield

 

 

 

 

 

 

 

 

 

 

 

 

 

Schedule of Total Stock-Based Compensation Expense Resulting from Stock Options, RSUs, Performance Shares and the ESPP

The following table sets forth the stock-based compensation expense resulting from stock options, RSUs, performance shares and the ESPP included in the Company's unaudited condensed consolidated statements of operations:

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

October 3,

2021

 

 

September 27,

2020

 

 

October 3,

2021

 

 

September 27,

2020

 

 

 

(In thousands)

 

Cost of revenue

 

$

430

 

 

$

923

 

 

$

1,626

 

 

$

3,129

 

Research and development

 

 

1,414

 

 

 

1,138

 

 

 

3,832

 

 

 

3,879

 

Sales and marketing

 

 

2,008

 

 

 

1,927

 

 

 

5,741

 

 

 

5,596

 

General and administrative

 

 

2,358

 

 

 

3,230

 

 

 

8,873

 

 

 

10,122

 

Total

 

$

6,210

 

 

$

7,218

 

 

$

20,072

 

 

$

22,726