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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Weighted Average Assumptions Used in Estimating Fair Value of Stock Options | The grant-date fair value of each option award is estimated on the date of grant using the Black-Scholes-Merton option-pricing model. The weighted average assumptions for grants during the years ended December 31, 2022 and 2021, are provided in the following table:
|  | For the Years Ended December 31, |
|  | 2022 |  |  | 2021 |
Expected dividend yield |  |  | 0 | % |  |  | 0 | %
Expected volatility |  |  | 57.4 | % |  |  | 52.4 | %
Expected term (years) |  |  | 5.6 |  |  |  | 5.6 |
Risk-free interest rate |  |  | 4.6 | % |  |  | 0.7 | %
Summary of Outstanding Stock Option Activity | A summary of the Company’s stock option activity is as follows (shares in thousands):
|  |  |  |  | Weighted Average |  |  |
|  | Number of stock options |  |  | Exercise price |  |  | Remaining contractual term (years) |  | Aggregate Intrinsic Value (in thousands) |
Balance at December 31, 2021 |  |  | 2,000 |  |  | $ | 12.79 |  |  |  | 7.3 |  | $ | 2,246 |
Granted |  |  | 451 |  |  | $ | 8.58 |  |  |  |  |  |
Exercised |  |  | (9 | ) |  | $ | 2.30 |  |  |  |  | $ | 59 |
Expired/Forfeited |  |  | (377 | ) |  | $ | 13.56 |  |  |  |  |  |
Balance at December 31, 2022 |  |  | 2,065 |  |  | $ | 11.78 |  |  |  | 6.7 |  | $ | 758 |
Vested and exercisable at December 31, 2022 |  |  | 1,370 |  |  | $ | 11.42 |  |  |  | 5.6 |  | $ | 758 |
Vested and expected to vest at December 31, 2022 |  |  | 2,065 |  |  | $ | 11.78 |  |  |  | 6.7 |  | $ | 758 |
Summary of Outstanding Restricted Stock Unit Activity | The following table summarizes the Company’s restricted stock unit activity (shares in thousands):
|  | Restricted stock units |  |  | Weighted average grant date fair value |
Balance at December 31, 2021 |  |  | 333 |  |  | $ | 17.55 |
Grants |  |  | 294 |  |  | $ | 8.14 |
Vested and released |  |  | (89 | ) |  | $ | 17.43 |
Forfeited |  |  | (94 | ) |  | $ | 15.50 |
Balance at December 31, 2022 |  |  | 444 |  |  | $ | 11.78 |
Schedule Of Stock Based Compensation Expenses | Stock-based compensation is recorded in the consolidated statements of operations as follows (in thousands):
|  | For the Years Ended December 31, |
|  | 2022 |  |  | 2021 |
Cost of goods sold |  | $ | 181 |  |  | $ | 3 |
Research and development |  |  | 1,056 |  |  |  | 777 |
Sales and marketing |  |  | 1,195 |  |  |  | 919 |
General and administrative |  |  | 2,546 |  |  |  | 2,350 |
Total stock-based compensation expense |  | $ | 4,978 |  |  | $ | 4,049 |
Schedule of performance stock unit | The following table summarizes the Company's performance stock unit (PSU) activity during the period indicated (shares in thousands):
|  | Performance stock units |  |  | Weighted average grant date fair value |
Balance at December 31, 2021 |  |  | — |  |  | $ | — |
Grants |  |  | 137 |  |  | $ | 2.09 |
Vested and released |  |  | — |  |  | $ | — |
Forfeited |  |  | — |  |  | $ | — |
Balance at December 31, 2022 |  |  | 137 |  |  | $ | 2.09 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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