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Equity and Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
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, 2022:
|  | (in thousands) |
Balance at December 31, 2021 |  |  | 998 |
Options cancelled |  |  | 71 |
Restricted stock granted |  |  | (507 | )
Forfeited/ Expired restricted stock added back |  |  | 147 |
Performance-Based restricted stock unearned |  |  | 8 |
Performance-Based restricted stock granted |  |  | (167 | )
Balance at December 31, 2022 |  |  | 550 |
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, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
|  | (in thousands) |
Cost of revenue |  | $ | 433 |  |  | $ | 343 |  |  | $ | 927 |
Selling and marketing |  |  | 2,028 |  |  |  | 1,746 |  |  |  | 1,148 |
Research and development |  |  | 1,444 |  |  |  | 1,379 |  |  |  | 664 |
General and administrative |  |  | 4,079 |  |  |  | 4,188 |  |  |  | 2,810 |
Total stock-based compensation |  | $ | 7,984 |  |  | $ | 7,656 |  |  | $ | 5,549 |
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, 2021 |  |  | 1,739,240 |  |  | $ | 7.72 |  |  |  | 7.02 |  |  | $ | 25,542,823 |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |
Exercised |  |  | (90,245 | ) |  |  | 7.22 |  |  |  |  |  |  |
Forfeited |  |  | (71,450 | ) |  |  | 9.71 |  |  |  |  |  |  |
Outstanding at December 31, 2022 |  |  | 1,577,545 |  |  | $ | 7.66 |  |  |  | 5.81 |  |  | $ | 2,465,015 |
Vested and expected to vest at December 31, 2022 |  |  | 1,571,949 |  |  | $ | 7.73 |  |  |  | 5.80 |  |  | $ | 2,460,325 |
Exercisable at December 31, 2022 |  |  | 1,283,196 |  |  | $ | 7.55 |  |  |  | 5.49 |  |  | $ | 2,252,404 |
Schedule of Weighted-Average Assumptions | Plan was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:
Expected term (in years) |  |  | - |
Risk-free interest rate |  |  | - |
Expected volatility |  |  | - |
Dividend rate |  |  | - |
Restricted Stock Activity |
|  | Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Nonvested restricted stock at December 31, 2021 |  |  | 788,454 |  |  | $ | 16.81 |
Granted |  |  | 506,715 |  |  |  | 20.64 |
Vested |  |  | (282,588 | ) |  |  | 16.19 |
Shares forfeited |  |  | (147,135 | ) |  |  | 19.79 |
Nonvested restricted stock at December 31, 2022 |  |  | 865,446 |  |  | $ | 18.75 |

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