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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2024
Stock-Based Compensation [Abstract] |
Schedule of Options Outstanding | The following table summarizes the activity in the shares available for grant under the Plans during the three and nine months ended September 30, 2024 and options outstanding as of September 30, 2024 (in thousands, except exercise price):
|  |  |  |  | Options Outstanding |
|  |  |  |  |  |  |  | Weighted |
|  | Shares |  |  |  |  |  | Average |
|  | Available |  |  | Number of |  |  | Exercise |
|  | for Grant |  |  | Shares |  |  | Prices |
Balance as of December 31, 2023 |  |  | 39 |  |  |  | 36 |  |  | $ | 127.00 |
RSUs granted |  |  | (2 | ) |  |  | — |  |  |  | — |
RSUs cancelled and returned to the 2019 Plan |  |  | 2 |  |  |  | — |  |  |  | — |
Options cancelled |  |  | — |  |  |  | (1 | ) |  | $ | 147.64 |
Balance as of March 31, 2024 |  |  | 39 |  |  |  | 35 |  |  | $ | 126.70 |
RSUs cancelled and returned to the 2019 Plan |  |  | 3 |  |  |  | — |  |  |  | — |
Options cancelled |  |  | — |  |  |  | (1 | ) |  | $ | 150.19 |
Balance as of June 30, 2024 |  |  | 42 |  |  |  | 34 |  |  | $ | 125.99 |
RSUs cancelled and returned to the 2019 Plan |  |  | 1 |  |  |  | — |  |  |  | — |
Options cancelled |  |  | — |  |  |  | (1 | ) |  | $ | 103.60 |
Balance as of September 30, 2024 |  |  | 43 |  |  |  | 33 |  |  | $ | 126.35 |
Schedule of Significant Ranges of Outstanding and Exercisable Options | The following table summarizes significant ranges of outstanding and exercisable options as of September 30, 2024 (in thousands, except contractual life and exercise price):
|  | Options Outstanding |  |  | Options Exercisable |
|  |  |  |  | Weighted |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  | Average |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  | Remaining |  |  | Weighted |  |  |  |  |  | Weighted |  |  |  |
|  |  |  |  | Contractual |  |  | Average |  |  |  |  |  | Average |  |  | Aggregate |
|  | Number |  |  | Life |  |  | Exercise |  |  | Number |  |  | Exercise |  |  | Intrinsic |
Range of Exercise Price |  | Outstanding |  |  | (in Years) |  |  | Price |  |  | Exercisable |  |  | Price |  |  | value |
$0.00 - $62.80 |  |  | 2 |  |  |  | 5.14 |  |  | $ | 62.80 |  |  |  | 2 |  |  | $ | 62.80 |  |  | $ | — |
$62.81 - $599.60 |  |  | 31 |  |  |  | 5.98 |  |  | $ | 108.21 |  |  |  | 29 |  |  | $ | 108.13 |  |  | $ | — |
$0.00 - $599.60 |  |  | 33 |  |  |  | 5.92 |  |  | $ | 126.35 |  |  |  | 31 |  |  | $ | 127.51 |  |  | $ | — |
Schedule of RSU Activity Under Plans | A summary of RSU activity under the Plans is presented below (in thousands, except for fair value):
|  |  |  |  | Weighted |
|  |  |  |  | Average |
|  | Number of |  |  | Grant-Date |
|  | Shares |  |  | Fair Value |
Non-vested shares as of December 31, 2023 |  |  | 15 |  |  | $ | 69.63 |
Granted |  |  | 2 |  |  | $ | 1.55 |
Cancelled |  |  | (2 | ) |  | $ | 53.54 |
Non-vested shares as of March 31, 2024 |  |  | 15 |  |  | $ | 62.04 |
Vested |  |  | (5 | ) |  | $ | 1.48 |
Non-vested shares as of June 30, 2024 |  |  | 10 |  |  | $ | 52.73 |
Cancelled |  |  | (1 | ) |  | $ | 86.94 |
Non-vested shares as of September 30, 2024 |  |  | 9 |  |  | $ | 50.63 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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