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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2023
Stockholders' Equity Note [Abstract] |
Schedule of Common Stock | In the year ended December 31, 2023 no shares of Class B common stock were converted to Class A common stock. As of December 31, 2023 the par value of the Class A, Class B and Class C shares was $2,548, $275 and $56, respectively.
|  | Shares Authorized |  |  | Shares Issued |  |  | Shares Outstanding |
Class A |  |  | 1,000,000,000 |  |  |  | 255,542,545 |  |  |  | 255,542,545 |
Class B |  |  | 100,000,000 |  |  |  | 27,390,397 |  |  |  | 27,390,397 |
Class C |  |  | 200,000,000 |  |  |  | 5,555,555 |  |  |  | 5,555,555 |
|  |  | 1,300,000,000 |  |  |  | 288,488,497 |  |  |  | 288,488,497 |
Activity under Plans | Activity under the Plans is as follows:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
Outstanding as of January 1, 2023 |  |  | 11,039,551 |  |  | $ | 5.23 |  |  |  | 5.5 |  |  | $ | 996 |
Granted |  |  | — |  |  | $ | — |  |  |  |  |  |  |
Forfeited |  |  | (757,743 | ) |  | $ | 5.44 |  |  |  |  |  |  |
Expired |  |  | (6,160 | ) |  | $ | 1.77 |  |  |  |  |  |  |
Exercised |  |  | (286,599 | ) |  | $ | 1.99 |  |  |  |  |  |  |
Outstanding as of December 31, 2023 |  |  | 9,989,049 |  |  | $ | 5.09 |  |  |  | 4.6 |  |  | $ | — |
Vested and expected to vest as of December 31, 2023 |  |  | 9,978,545 |  |  | $ | 5.09 |  |  |  | 4.6 |  |  | $ | — |
Options exercisable as of December 31, 2023 |  |  | 9,906,925 |  |  | $ | 5.08 |  |  |  | 4.6 |  |  | $ | — |
Summary of Unvested Restricted Stock Unit Activity | The following table summarizes the unvested restricted stock unit activity for the year ended December 31, 2023:
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested as of January 1, 2023 |  |  | 19,316,459 |  |  | $ | 10.78 |
Granted |  |  | 15,980,943 |  |  |  | 2.47 |
Vested |  |  | (8,956,584 | ) |  |  | 7.16 |
Forfeited |  |  | (3,917,923 | ) |  |  | 4.22 |
Unvested as of December 31, 2023 |  |  | 22,422,895 |  |  | $ | 7.45 |
Summary of Performance-based Market Condition Share Awards |
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested as of January 1, 2023 |  |  | 25,602,405 |  |  | $ | 2.30 |
Granted |  |  | 2,654,598 |  |  |  | 2.19 |
Vested |  |  | (1,146,310 | ) |  |  | 2.12 |
Cancelled/Forfeited |  |  | (394,387 | ) |  |  | 2.41 |
Unvested as of December 31, 2023 |  |  | 26,716,306 |  |  | $ | 2.29 |
Schedule of Weighted Average Assumptions used to Determine Estimated Fair Value of Performance-based Market Condition Share Awards Granted | The weighted average estimated fair value of the performance-based market condition share awards granted during the year ended December 31, 2023 and December 31, 2022 was determined using a Monte-Carlo valuation simulation, with the following most significant weighted-average assumptions:
|  | Years Ended December 31,
|  | 2023 |  |  | 2022 |  |  | 2021
Risk-free rate |  |  | 4.61 | % |  |  | 2.34 | % |  | N/A
Term to end of performance period (yrs) |  | 3 years |  |  | 3 years |  |  | N/A
Weighted average valuation date stock price |  | $ | 2.76 |  |  | $ | 3.50 |  |  | N/A
Expected volatility |  |  | 70 | % |  |  | 75 | % |  | N/A
Expected dividend yield |  |  | 0 | % |  |  | 0 | % |  | N/A
Stock-Based Compensation Expense | Stock-based compensation expense was classified in the consolidated statements of operations and comprehensive loss as follows:
|  | Years Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Cost of revenues |  | $ | 1,681 |  |  | $ | 1,605 |  |  | $ | 1,655 |
Research and development |  |  | 10,348 |  |  |  | 10,236 |  |  |  | 7,613 |
Selling and marketing |  |  | 8,613 |  |  |  | 7,182 |  |  |  | 7,666 |
General and administrative |  |  | 51,398 |  |  |  | 50,121 |  |  |  | 26,875 |
Total |  | $ | 72,040 |  |  | $ | 69,144 |  |  | $ | 43,809 |

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