Note 2 - Summary of Significant Accounting Policies (Tables)
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12 Months Ended |
Dec. 31, 2025 |
| Notes Tables |
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| Schedule of Segment Reporting Information, by Segment [Table Text Block] |
| | | For the Year Ended | |
| | | December 31, | |
| | | 2025 | | | 2024 | |
| Revenues | | $ | 819 | | | $ | 420 | |
| Less: | | | | | | | | |
| Cost of revenues | | | 63 | | | | 42 | |
| Acquired in-process research and development expense | | | 1,967 | | | | — | |
| Loss on impairment of intangible assets | | | 6,995 | | | | — | |
| Loss on debt extinguishment | | | 3,260 | | | | — | |
| Depreciation and amortization expense | | | 2,115 | | | | 2,109 | |
| Stock-based compensation expense | | | 338 | | | | 54 | |
| Salaries and benefits expense | | | 4,471 | | | | 4,192 | |
| Professional fees | | | 2,167 | | | | 2,034 | |
| Research and development expense | | | 862 | | | | 272 | |
| Interest income | | | (34 | ) | | | (81 | ) |
| Interest expense | | | 281 | | | | 91 | |
| Change in fair value of royalties payable due to related parties | | | (5,709 | ) | | | 2,239 | |
| Change in fair value of convertible notes payable | | | (2 | ) | | | — | |
| Net loss on trading debt securities | | | 564 | | | | — | |
| Income tax provision (benefit) | | | (1,810 | ) | | | 3,141 | |
| Other segment items (1) | | | 2,986 | | | | 2,970 | |
| Segment net loss | | | (17,695 | ) | | | (16,643 | ) |
| | | | | | | | | |
| Reconciliation of net loss | | | | | | | | |
| Adjustments and reconciling items | | | — | | | | — | |
| Consolidated net loss | | $ | (17,695 | ) | | $ | (16,643 | ) |
|
| Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | | | | | | December 31, 2025 | | | | | |
| | | Total | | | Level 1 | | | Level 2 | | | Level 3 | |
| Assets: | | | | | | | | | | | | | | | | |
| Cash Equivalents | | | | | | | | | | | | | | | | |
| Money market funds | | $ | 2 | | | $ | 2 | | | $ | — | | | $ | — | |
| Total assets | | $ | 2 | | | $ | 2 | | | $ | — | | | $ | — | |
| | | | | | | | | | | | | | | | | |
| Liabilities: | | | | | | | | | | | | | | | | |
| Royalties payable due to related parties | | $ | 792 | | | $ | — | | | $ | — | | | $ | 792 | |
| Convertible notes payable | | | 298 | | | | — | | | | — | | | | 298 | |
| Total liabilities | | $ | 1,090 | | | $ | — | | | $ | — | | | $ | 1,090 | |
| | | | | | | December 31, 2024 | | | | | |
| | | Total | | | Level 1 | | | Level 2 | | | Level 3 | |
| Assets: | | | | | | | | | | | | | | | | |
| Cash Equivalents | | | | | | | | | | | | | | | | |
| Mutual funds | | $ | 2,803 | | | $ | 2,803 | | | $ | — | | | $ | — | |
| Money market funds | | | 12 | | | | 12 | | | | — | | | | — | |
| Total assets | | $ | 2,815 | | | $ | 2,815 | | | $ | — | | | $ | — | |
| | | | | | | | | | | | | | | | | |
| Liabilities: | | | | | | | | | | | | | | | | |
| Current portion of royalties payable due to related parties | | $ | 145 | | | $ | — | | | $ | — | | | $ | 145 | |
| Royalties payable due to related parties | | | 9,068 | | | | — | | | | — | | | | 9,068 | |
| Total liabilities | | $ | 9,213 | | | $ | — | | | $ | — | | | $ | 9,213 | |
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| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
| | | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | |
| | | Royalties Payable due to Related Parties | | | Convertible Notes Payable | |
| Balance at January 1, 2025 | | $ | 9,213 | | | $ | — | |
| Issuance of convertible notes payable | | | — | | | | 300 | |
| Exchange of royalties payable due to related parties (see Note 8) | | | (2,712 | ) | | | — | |
| Change in fair value | | | (5,709 | ) | | | (2 | ) |
| Balance at December 31, 2025 | | $ | 792 | | | $ | 298 | |
| | | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | |
| | | Royalties Payable due to Related Parties | | | Convertible Notes Payable | |
| Balance at January 1, 2024 | | $ | 6,974 | | | $ | — | |
| Change in fair value | | | 2,239 | | | | — | |
| Balance at December 31, 2024 | | $ | 9,213 | | | $ | — | |
|
| Fair Value Measurements, Nonrecurring [Table Text Block] |
| | | | | | | December 31, 2025 | | | | | |
| | | Total | | | Level 1 | | | Level 2 | | | Level 3 | |
| Assets: | | | | | | | | | | | | | | | | |
| VIVO Intangible Assets | | $ | 184 | | | $ | — | | | $ | — | | | $ | 184 | |
|
| Schedule of Property, Plant and Equipment, Useful Life [Table Text Block] |
| Machinery and equipment | | | 2 - 5 years | |
| Computer hardware and software | | | 1 - 5 years | |
| LockeT animation video | | | 3 years | |
| VIVO DEMO/Clinical Systems | | | 1-5 years | |
|
| Disaggregation of Revenue [Table Text Block] |
| | | For the Year Ended December 31, |
| | | 2025 | | | 2024 |
| Product sales | | | | | | | |
| US | | $ | 655 | | | $ | 278 |
| Europe | | | 164 | | | | 142 |
| Total product sales | | $ | 819 | | | $ | 420 |
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| Royalties Payable [Member] |
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| Notes Tables |
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| Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
| December 31, 2025 | |
| Instrument | Valuation Technique | Unobservable Input | | Input Range | |
| Royalties payable due to related parties | Discounted future cash flows | Revenue adjusted discount rate | | | 19.5 | % |
| December 31, 2024 | |
| Instrument | Valuation Technique | Unobservable Input | | Input Range | |
| Royalties payable due to related parties, including the current portion | Discounted future cash flows | Revenue adjusted discount rate | | | 22.5 | % |
| December 31, 2025 | |
| Instrument | Valuation Technique | Unobservable Input | | Input Range | |
| Intangible assets - Developed technology | Multi-period excess earnings | Discount rate | | | 22 | % |
| | | Annual obsolescence rate (pre-patent expiration) | | | 95.0 | % |
| | | Annual obsolescence rate (post-patent expiration) | | | 75.0 | % |
| Intangible assets - Trade Name | Relief from royalty | Discount rate | | | 22 | % |
| | | Pre-tax royalty rate | | | 1.0 | % |
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