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Equity and Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Stock Activity and Total Number of Shares Available for Grant

The following table presents the stock activity and the total number of shares available for grant as of December 31, 2023:

 

 

 

(in thousands)

 

Balance at December 31, 2022

 

 

550

 

Plan Amendment

 

 

1,049

 

Options cancelled

 

 

21

 

Restricted stock granted

 

 

(520

)

Forfeited/ Expired restricted stock added back

 

 

28

 

Performance-Based restricted stock unearned

 

 

94

 

Performance-Based restricted stock granted

 

 

(163

)

Balance at December 31, 2023

 

 

1,059

 
Stock-based Compensation Expense

Total estimated stock-based compensation expense for employees and non-employees, related to all of the Company's stock-based awards, was comprised as follows:

 

 

 

Year ended December 31,

 

 

 

2023

 

 

2022

 

 

2021

 

 

 

(in thousands)

 

Cost of revenue

 

$

824

 

 

$

433

 

 

$

343

 

Selling and marketing

 

 

2,475

 

 

 

2,028

 

 

 

1,746

 

Research and development

 

 

1,870

 

 

 

1,444

 

 

 

1,379

 

General and administrative

 

 

6,814

 

 

 

4,079

 

 

 

4,188

 

Total stock-based compensation

 

$

11,983

 

 

$

7,984

 

 

$

7,656

 
Stock Option Activity

 

 

Options Outstanding

 

 

 

Number of
Shares
Underlying
Outstanding
Options

 

 

Weighted-
Average
Exercise
Price

 

 

Weighted-
Average
Remaining
Contractual
Term

 

 

Aggregate
Intrinsic
Value

 

 

 

 

 

 

 

 

 

(in years)

 

 

 

 

Outstanding at December 31, 2022

 

 

1,577,545

 

 

$

7.66

 

 

 

5.81

 

 

$

2,465,015

 

Granted

 

 

-

 

 

 

-

 

 

 

 

 

 

 

Exercised

 

 

(515,089

)

 

 

4.39

 

 

 

 

 

 

 

Forfeited

 

 

(21,004

)

 

 

16.45

 

 

 

 

 

 

 

Outstanding at December 31, 2023

 

 

1,041,452

 

 

$

9.10

 

 

 

4.22

 

 

$

3,137,285

 

Vested and expected to vest at December 31, 2023

 

 

1,040,873

 

 

$

9.22

 

 

 

4.22

 

 

$

3,136,393

 

Exercisable at December 31, 2023

 

 

984,120

 

 

$

9.23

 

 

 

4.09

 

 

$

2,975,342

 

 
Restricted Stock Awards  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Restricted Stock Activity

 

 

Shares

 

 

Weighted
Average
Grant Date
Fair Value
Per Share

 

Nonvested restricted stock at December 31, 2022

 

 

865,446

 

 

$

18.75

 

Granted

 

 

519,533

 

 

 

9.98

 

Vested

 

 

(591,801

)

 

 

16.36

 

Shares forfeited

 

 

(28,236

)

 

 

15.83

 

Nonvested restricted stock at December 31, 2023

 

 

764,942

 

 

$

14.76