XML 53 R39.htm IDEA: XBRL DOCUMENT
v3.24.2

Stock-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
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, 2023 and 2022:
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |
Risk-free interest rate |  |  | 4.1 | % |  |  | 2.7 | %
Expected term (in years) |  |  | 5.6 |  |  |  | 5.9 |
Expected volatility |  |  | 86.5 | % |  |  | 77.1 | %
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:
|  | Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Contract Term (years) |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2022 |  |  | 2,514,452 |  |  | $ | 49.08 |  |  |  | 6.1 |  |  | $ | 7,851 |
Granted |  |  | 741,634 |  |  |  | 5.35 |  |  |  |  |  |  |
Exercised |  |  | (108,637 | ) |  |  | 2.80 |  |  |  |  |  |  |
Forfeited/Expired |  |  | (327,262 | ) |  |  | 42.23 |  |  |  |  |  |  |
Outstanding at December 31, 2023 |  |  | 2,820,187 |  |  | $ | 40.16 |  |  |  | 5.6 |  |  | $ | — |
Vested and expected to vest December 31, 2023 |  |  | 2,820,187 |  |  | $ | 40.16 |  |  |  | 5.6 |  |  | $ | — |
Exercisable at December 31, 2023 |  |  | 2,025,287 |  |  | $ | 46.01 |  |  |  | 4.5 |  |  | $ | — |
Schedule of Activity Related to RSU Stock-Based Payment Awards | The following table summarizes activity related to RSU stock-based payment awards:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding at December 31, 2022 |  |  | 227,013 |  |  | $ | 73.35 |
Granted |  |  | 954,931 |  |  | $ | 6.29 |
Released |  |  | (83,759 | ) |  | $ | 65.05 |
Forfeited |  |  | (274,853 | ) |  | $ | 21.37 |
Outstanding at December 31, 2023 |  |  | 823,332 |  |  | $ | 13.77 |
Schedule of Stock-based Compensation Expense | The Company recorded stock-based compensation expense in the following expense categories of its consolidated statements of operations:
| Year Ended December 31, |
| 2023 |  |  | 2022 |
Cost of revenues | $ | 580 |  |  | $ | 410 |
Research and development |  | 1,832 |  |  |  | 2,118 |
Selling, general and administrative |  | 12,605 |  |  |  | 13,328 |
| $ | 15,017 |  |  | $ | 15,856 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration