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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2023
Stock-Based Compensation [Abstract] |
Schedule of Table Summarizes the Activity | The following table summarizes the activity in the shares available for grant under the Plans during the nine months ended September 30, 2023 (in thousands, except exercise price):
|  |  |  |  | Options Outstanding |
|  |  |  |  |  |  |  | Weighted |
|  | Shares |  |  |  |  |  | Average |
|  | Available |  |  | Number of |  |  | Exercise |
|  | for Grant |  |  | Shares |  |  | Prices |
Balance as of December 31, 2022 |  |  | 1,556 |  |  |  | 1,499 |  |  | $ | 3.32 |
RSUs granted |  |  | (80 | ) |  |  | — |  |  | $ | — |
RSUs cancelled and returned to the Plans |  |  | 51 |  |  |  | — |  |  | $ | — |
Options cancelled |  |  | — |  |  |  | (17 | ) |  | $ | 6.76 |
Balance as of March 31, 2023 |  |  | 1,527 |  |  |  | 1,482 |  |  | $ | 3.28 |
RSUs granted |  |  | (69 | ) |  |  | — |  |  | $ | — |
RSUs cancelled and returned to the Plans |  |  | 57 |  |  |  | — |  |  | $ | — |
Options cancelled |  |  | — |  |  |  | (9 | ) |  | $ | 2.92 |
Balance as of June 30, 2023 |  |  | 1,515 |  |  |  | 1,473 |  |  | $ | 3.28 |
RSUs cancelled and returned to the Plans |  |  | 10 |  |  |  | — |  |  | $ | — |
Options cancelled |  |  | — |  |  |  | (24 | ) |  | $ | 12.34 |
Balance as of September 30, 2023 |  |  | 1,525 |  |  |  | 1,449 |  |  | $ | 3.07 |
Schedule of Summary 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, 2022 |  |  | 1,057 |  |  | $ | 2.06 |
Granted |  |  | 80 |  |  | $ | 0.99 |
Vested |  |  | (51 | ) |  | $ | 2.07 |
Non-vested shares as of March 31, 2023 |  |  | 1,086 |  |  | $ | 1.98 |
Granted |  |  | 69 |  |  | $ | 0.52 |
Vested |  |  | (210 | ) |  | $ | 2.16 |
Cancels |  |  | (3 | ) |  | $ | 2.15 |
Non-vested shares as of June 30, 2023 |  |  | 942 |  |  | $ | 1.98 |
Vested |  |  | (17 | ) |  | $ | 1.83 |
Cancels |  |  | (10 | ) |  | $ | 2.15 |
Non-vested shares as of September 30, 2023 |  |  | 915 |  |  | $ | 1.83 |
Schedule of Table Summarizes Significant Ranges of Outstanding and Exercisable Options | The following table summarizes significant ranges of outstanding and exercisable options as of September 30, 2023 (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 |
$1.57 - $14.99 |  |  | 1,446 |  |  |  | 6.95 |  |  | $ | 2.63 |  |  |  | 1,055 |  |  | $ | 2.59 |  |  | $ | — |
$25.60 - $143.99 |  |  | — |  |  |  | 2.89 |  |  | $ | 101.27 |  |  |  | — |  |  | $ | 101.27 |  |  | $ | — |
$144.00 - $409.99 |  |  | 2 |  |  |  | 2.90 |  |  | $ | 144.00 |  |  |  | 2 |  |  | $ | 144.00 |  |  | $ | — |
$410.00 - $924.00 |  |  | 1 |  |  |  | 1.50 |  |  | $ | 410.00 |  |  |  | 1 |  |  | $ | 410.00 |  |  | $ | — |
$1.57 - $924.00 |  |  | 1,449 |  |  |  | 6.93 |  |  | $ | 3.07 |  |  |  | 1,058 |  |  | $ | 3.19 |  |  | $ | — |

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