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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Weighted Average Grant Fair Value of Stock Options using Black-Scholes Option-pricing Model | The following table presents, on a weighted average basis, the assumptions used in the Black-Scholes option-pricing model to determine the grant-date fair value of stock options granted during the years ended December 31, 2024 and 2023: Schedule of Weighted Average Grant Fair Value of Stock Options using Black-Scholes Option-pricing Model
|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |
Risk-free interest rate |  |  | 4.4 | % |  |  | 4.1 | %
Expected term (in years) |  |  | 5.7 |  |  |  | 5.6 |
Expected volatility |  |  | 104.9 | % |  |  | 86.5 | %
Expected dividend yield |  |  | — |  |  |  | — |
Schedule of Stock Option Activity | The following table summarizes option activity with service conditions under the 2021 Plan and the 2017 Plan: Schedule of Stock Option Activity
|  | Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Contract Term (years) |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2024 |  |  | 2,820,187 |  |  | $ | 40.16 |  |  |  | 5.6 |  |  | $ | — |
Granted |  |  | 1,503,394 |  |  |  | 3.26 |  |  |  |  |  |  |  |  |
Exercised |  |  | (20,744 | ) |  |  | 2.80 |  |  |  |  |  |  |  |  |
Forfeited/Expired |  |  | (341,312 | ) |  |  | 29.51 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2024* |  |  | 3,961,525 |  |  | $ | 27.27 |  |  |  | 6.4 |  |  | $ | 16 |
Vested and expected to vest at December 31, 2024 |  |  | 3,961,525 |  |  | $ | 27.27 |  |  |  | 6.4 |  |  | $ | 16 |
Exercisable at December 31, 2024 |  |  | 2,586,561 |  |  | $ | 37.49 |  |  |  | 4.9 |  |  | $ | — |
* | Options outstanding at December 31, 2024 under the 2021 Plan and 2017 Plan were 2,569,029 and 1,437,496, respectively. Options outstanding at December 31, 2024 under the 2021 Plan include 45,000 awards with performance conditions (see below).
Schedule of Activity Related to RSU Stock-Based Payment Awards | The following table summarizes activity related to RSU stock-based payment awards under the 2021 Plan: Schedule of Activity Related to RSU Stock-Based Payment Awards
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding at January 1, 2024 |  |  | 823,332 |  |  | $ | 13.77 |
Granted |  |  | 337,080 |  |  | $ | 2.23 |
Released |  |  | (400,996 | ) |  | $ | 11.58 |
Forfeited |  |  | (99,977 | ) |  | $ | 13.24 |
Outstanding at December 31, 2024 |  |  | 659,439 |  |  | $ | 9.29 |
Schedule of Stock-based Compensation Expense | The Company recorded stock-based compensation expense in the following expense categories of its consolidated statements of operations and comprehensive loss: Schedule of Stock-based Compensation Expense
|  | 2024 |  |  | 2023 |
|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |
Cost of revenues |  | $ | 450 |  |  | $ | 580 |
Research and development |  |  | 1,287 |  |  |  | 1,832 |
Selling, general and administrative |  |  | 9,832 |  |  |  | 12,605 |
Stock-based compensation expense |  | $ | 11,569 |  |  | $ | 15,017 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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