Summary of Stock Option Activity and Related Information (Detail) |
3 Months Ended |
|---|---|
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Mar. 31, 2026
$ / shares
shares
| |
| Number of Option Shares | |
| Stock Options, Beginning Balance | shares | 8,002,394 |
| Stock Options, Granted | shares | 1,100,000 |
| Stock Options, Forfeited | shares | (150,000) |
| Stock Options, Expired | shares | (763,000) |
| Stock Options, Ending Balance | shares | 8,189,394 |
| Stock Options, Exercisable at March 31, 2026 | shares | 7,072,644 |
| Weighted Average Exercise Price, Beginning Balance | $ / shares | $ 4.69 |
| Weighted Average Exercise Price, Granted | $ / shares | 1.6 |
| Weighted Average Exercise Price, Forfeited | $ / shares | 2.1 |
| Weighted Average Exercise Price, Expired | $ / shares | 3.91 |
| Weighted Average Exercise Price, Ending Balance | $ / shares | 4.4 |
| Weighted Average Exercise Price, Exercisable at March 31, 2026 | $ / shares | $ 4.84 |
| X | ||||||||||
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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