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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
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 as follows:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
|  | (in thousands) |
Cost of revenue |  | $ | 96 |  |  | $ | 90 |  |  | $ | 122 |  |  | $ | 487 |
Selling and marketing |  |  | 539 |  |  |  | 446 |  |  |  | 937 |  |  |  | 777 |
Research and development |  |  | 390 |  |  |  | 348 |  |  |  | 673 |  |  |  | 597 |
General and administrative |  |  | 1,005 |  |  |  | 1,057 |  |  |  | 1,835 |  |  |  | 1,866 |
Total stock-based compensation |  | $ | 2,030 |  |  | $ | 1,941 |  |  | $ | 3,567 |  |  | $ | 3,727 |
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 June 30, 2022:
|  | (in thousands) |
Balance at December 31, 2021 |  |  | 998 |
Options Cancelled |  |  | 31 |
Restricted Stock Granted |  |  | (484 | )
Restricted Stock Forfeited |  |  | 28 |
Performance Shares Unearned |  |  | 7 |
Performance Shares Granted |  |  | (167 | )
Balance at June 30, 2022 |  |  | 413 |
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 |
Options Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |
Options Exercised |  |  | (71,379 | ) |  |  | 7.54 |  |  |  |  |  |  |
Options Forfeited |  |  | (31,181 | ) |  |  | 10.28 |  |  |  |  |  |  |
Outstanding at June 30, 2022 |  |  | 1,636,680 |  |  | $ | 7.68 |  |  |  | 6.45 |  |  | $ | 8,417,740 |
Vested and expected to vest at June 30, 2022 |  |  | 1,621,925 |  |  | $ | 7.74 |  |  |  | 6.44 |  |  | $ | 8,350,391 |
Exercisable at June 30, 2022 |  |  | 1,143,564 |  |  | $ | 7.28 |  |  |  | 5.98 |  |  | $ | 6,537,350 |
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, 2021 |  |  | 788,454 |  |  | $ | 16.81 |
Granted |  |  | 483,533 |  |  |  | 21.20 |
Vested |  |  | (258,399 | ) |  |  | 16.31 |
Shares forfeited |  |  | (27,854 | ) |  |  | 16.58 |
Nonvested restricted stock at June 30, 2022 |  |  | 985,734 |  |  | $ | 19.10 |

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