Condensed Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Total revenues | $ 447,000 | $ 646,000 | $ 768,000 | $ 1,142,000 |
| Operating expenses: | ||||
| Cost of product revenues | $ 7,000 | $ 27,000 | $ 7,000 | $ 29,000 |
| Type of cost, good or service [extensible list] | Product Revenue [Member] | Product Revenue [Member] | Product Revenue [Member] | Product Revenue [Member] |
| Research and development | $ 1,176,000 | $ 2,247,000 | $ 3,059,000 | $ 6,366,000 |
| Selling, general and administrative | 2,067,000 | 2,566,000 | 4,644,000 | 5,246,000 |
| Total operating expenses | 3,250,000 | 4,840,000 | 7,710,000 | 11,641,000 |
| Loss from operations | (2,803,000) | (4,194,000) | (6,942,000) | (10,499,000) |
| Other income (expense): | ||||
| Interest and other income | 93,000 | 227,000 | 188,000 | 548,000 |
| Change in fair value of warrant liabilities | 445,000 | (78,000) | 326,000 | (1,796,000) |
| Other income (expense), net | 538,000 | 149,000 | 514,000 | (1,248,000) |
| Loss from continuing operations | (2,265,000) | (4,045,000) | (6,428,000) | (11,747,000) |
| Income (loss) from discontinued operations | 345,000 | (69,000) | 404,000 | |
| Net loss | (2,265,000) | (3,700,000) | (6,497,000) | (11,343,000) |
| Net change in unrealized loss on available-for-sale securities, net of reclassification adjustments and taxes | 3,000 | 7,000 | ||
| Total comprehensive loss | $ (2,265,000) | $ (3,697,000) | $ (6,497,000) | $ (11,336,000) |
| Net loss per share, basic | ||||
| Loss from continuing operations | $ (0.07) | $ (0.13) | $ (0.21) | $ (0.38) |
| Income (loss) from discontinued operations | 0.01 | 0.01 | ||
| Net loss per common share | (0.07) | (0.12) | (0.21) | (0.37) |
| Net loss per share, diluted | ||||
| Loss from continuing operations | (0.07) | (0.13) | (0.21) | (0.38) |
| Income (loss) from discontinued operations | 0.01 | 0.01 | ||
| Net loss per common share | $ (0.07) | $ (0.12) | $ (0.21) | $ (0.37) |
| Weighted-average shares used in computing net loss per share | ||||
| Weighted-average shares used in computing net loss per share, basic | 31,042 | 31,038 | 31,042 | 30,838 |
| Weighted-average shares used in computing net loss per share, diluted | 31,163 | 31,038 | 31,042 | 30,838 |
| Collaborative Research and Development and Other Revenue [Member] | ||||
| Total revenues | $ 428,000 | $ 606,000 | $ 749,000 | $ 1,102,000 |
| Product Revenue [Member] | ||||
| Total revenues | $ 19,000 | $ 40,000 | $ 19,000 | $ 40,000 |
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Indicates type of cost from product sold and service rendered. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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