Note 9 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Net operating loss and credits | $ 40,819,000 | $ 35,453,000 |
| Intangibles – definite lived | 2,791,000 | 1,899,000 |
| Stock compensation | 1,856,000 | 1,776,000 |
| Accrued liabilities | 171,000 | 1,133,000 |
| State taxes | 3,000 | 12,000 |
| Capitalized research and development costs | 2,923,000 | 2,659,000 |
| Total deferred tax assets | 48,563,000 | 42,932,000 |
| Valuation allowance | (48,351,000) | (42,855,000) |
| Fixed assets | (35,000) | (69,000) |
| Intangibles – indefinite lived | (338,000) | 0 |
| Contract liabilities | 0 | (8,000) |
| Total deferred tax liabilities | (373,000) | (77,000) |
| Total net deferred tax assets (liabilities), net of valuation allowance | $ (161,000) | $ 0 |
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development. No definition available.
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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