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Equity and Stock-Based Compensation (Tables) | 12 Months Ended
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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 |

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