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v3.24.1

Stockholders Equity - Summary of Stock Option, Restricted Stock Award, and Restricted Stock Unit Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Options and restricted stock available for grant, Beginning Balance | 16,599,000 |
Options and restricted stock available for grant, increase to pool | 1,300,000 |
Options granted | (3,299,000) |
Options expired | 1,115,000 |
Options forfeited | 614,000 |
Options and restricted stock available for grant, Ending Balance | 16,652,000 | 16,599,000
Options exercisable at December 31, 2023 | 1,674,000 |
Number of shares, Beginning Balance | 3,796,000 |
Options granted, Shares | 3,328,000 |
Options expired, Shares | (1,115,000) |
Options forfeited, Shares | (614,000) |
Number of shares, Ending Balance | 5,395,000 | 3,796,000
Weighted average exercise price, Beginning Balance | $ 3.14 |
Options granted, Weighted average exercise price | 1.67 |
Options expired, Weighted average exercise price | 3.62 |
Options forfeited, Weighted average exercise price | 2.49 |
Weighted average exercise price, Ending Balance | 2.21 | $ 3.14
Options exercisable at December 31, 2023 | $ 3.31 |
Weighted average remaining contractual term | 7 years 4 months 20 days | 6 years 8 months 1 day
Weighted average remaining contractual term, Options exercisable at December 31, 2023 | 5 years 4 months 24 days |
Aggregate intrinsic value, Outstanding | $ 1 | $ 10
Aggregate intrinsic value, Options exercisable at December 31, 2023 | $ 1 |
Restricted Stock |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Restricted stock granted | (333,000) |
Restricted stock forfeited | 656,000 |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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