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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of Assumptions in the Binomial Option-Pricing Model Used to Determine The Fair Value of Stock Options | The following table presents the key inputs and assumptions used to value the RSUs that contain service and market conditions on the grant date:
Remaining term |  | 5.0 years |
Risk-free interest rate |  |  | 3.5 | %
Expected volatility |  |  | 79.7 | %
Summary of Stock Option Activity | Activity with respect to stock options is summarized as follows:
|  | Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value (in thousands) |
Options outstanding, January 1, 2023 |  |  | 904,220 |  |  | $ | 21.04 |  |  |  | 7.3 |  |  | $ | 655 |
Granted |  |  | 335,502 |  |  | $ | 6.41 |  |  |  |  |  |  |
Exercised |  |  | (4,778 | ) |  | $ | 2.44 |  |  |  |  |  |  |
Forfeited |  |  | (140,950 | ) |  | $ | 21.89 |  |  |  |  |  |  |
Expired |  |  | (317,854 | ) |  | $ | 22.83 |  |  |  |  |  |  |
Options outstanding, September 30, 2023 |  |  | 776,140 |  |  | $ | 13.93 |  |  |  | 6.6 |  |  | $ | 523 |
Nonvested options, September 30, 2023 |  |  | 428,165 |  |  | $ | 20.42 |  |  |  | 7.4 |  |  | $ | 28 |
Vested and exercisable, September 30, 2023 |  |  | 347,975 |  |  | $ | 5.96 |  |  |  | 5.6 |  |  | $ | 495 |
Chief Executive Officer [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of Assumptions in the Binomial Option-Pricing Model Used to Determine The Fair Value of Stock Options | The following table presents the key inputs and assumptions used to value the options granted to the Chief Executive Officer on the grant date:
Remaining term |  | 10.0 years |
Risk-free interest rate |  |  | 1.5 | %
Expected dividend yield |  |  | 0.0 | %
Expected volatility |  |  | 40.0 | %
Summary of Restricted Stock Activity | Activity with respect to RSUs is summarized as follows:
|  | Shares |  |  | Weighted-Average Grant-Date Fair Value |
Nonvested shares at January 1, 2023 |  |  | 508,506 |  |  | $ | 122.27 |
Granted |  |  | 1,735,135 |  |  | $ | 5.10 |
Vested |  |  | (248,290 | ) |  | $ | 68.15 |
Forfeited |  |  | (363,193 | ) |  | $ | 26.33 |
Nonvested shares at September 30, 2023 |  |  | 1,632,158 |  |  | $ | 27.29 |

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- 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
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- 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
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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