Note 2 - Summary of Significant Accounting Policies (Tables)
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6 Months Ended |
Jun. 30, 2025 |
Notes Tables |
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Schedule of Segment Reporting Information, by Segment [Table Text Block] |
| | For the Three Months Ended | | | For the Six Months Ended | |
| | June 30, | | | June 30, | |
| | 2025 | | | 2024 | | | 2025 | | | 2024 | |
Revenues | | $ | 212 | | | $ | 93 | | | $ | 355 | | | $ | 175 | |
Less: | | | | | | | | | | | | | | | | |
Cost of revenues | | | 14 | | | | 16 | | | | 25 | | | | 21 | |
Acquired in-process research and development expense | | | 1,848 | | | | — | | | | 1,967 | | | | — | |
Depreciation and amortization expense | | | 529 | | | | 526 | | | | 1,060 | | | | 1,048 | |
Stock-based compensation expense | | | 98 | | | | 13 | | | | 189 | | | | 19 | |
Salaries and benefits expense | | | 1,310 | | | | 1,060 | | | | 2,624 | | | | 1,721 | |
Professional fees | | | 317 | | | | 374 | | | | 1,044 | | | | 1,046 | |
Research and development expense | | | 155 | | | | 81 | | | | 258 | | | | 118 | |
Interest income | | | (3 | ) | | | (7 | ) | | | (21 | ) | | | (40 | ) |
Interest expense | | | 67 | | | | 5 | | | | 116 | | | | 8 | |
Change in fair value of royalties payable due to related parties | | | 1,667 | | | | 1,504 | | | | 2,830 | | | | 1,590 | |
Change in fair value of trading debt securities | | | (10 | ) | | | — | | | | (10 | ) | | | — | |
Income tax benefit | | | (950 | ) | | | — | | | | (1,674 | ) | | | — | |
Other segment items (1) | | | 628 | | | | 741 | | | | 1,450 | | | | 1,539 | |
Segment net loss | | | (5,458 | ) | | | (4,220 | ) | | | (9,503 | ) | | | (6,895 | ) |
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Reconciliation of net loss | | | | | | | | | | | | | | | | |
Adjustments and reconciling items | | | — | | | | — | | | | — | | | | — | |
Consolidated net loss | | $ | (5,458 | ) | | $ | (4,220 | ) | | $ | (9,503 | ) | | $ | (6,895 | ) |
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Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | | | | | June 30, 2025 | | | | | |
| | Total | | | Level 1 | | | Level 2 | | | Level 3 | |
Assets: | | | | | | | | | | | | | | | | |
Cash Equivalents | | | | | | | | | | | | | | | | |
Mutual funds | | $ | 629 | | | $ | 629 | | | $ | — | | | $ | — | |
Money market funds | | | 115 | | | | 115 | | | | — | | | | — | |
Trading debt securities | | | 874 | | | | — | | | | — | | | | 874 | |
Total assets | | $ | 1,618 | | | $ | 744 | | | $ | — | | | $ | 874 | |
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Liabilities: | | | | | | | | | | | | | | | | |
Current portion of royalties payable due to related parties | | $ | 497 | | | $ | — | | | $ | — | | | $ | 497 | |
Royalties payable due to related parties | | $ | 11,546 | | | $ | — | | | $ | — | | | $ | 11,546 | |
Total liabilities | | $ | 12,043 | | | $ | — | | | $ | — | | | $ | 12,043 | |
| | | | | | 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 | | | $ | — | | | $ | — | |
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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 | | | Trading Debt Securities | |
Balance at January 1, 2025 | | $ | 9,213 | | | $ | — | |
Change in fair value | | | 1,163 | | | | — | |
Balance at March 31, 2025 | | | 10,376 | | | | — | |
Purchased | | | — | | | | 864 | |
Change in fair value | | | 1,667 | | | | 10 | |
Balance at June 30, 2025 | | $ | 12,043 | | | $ | 874 | |
| | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) | |
| | Royalties Payable due to Related Parties | | | Trading Debt Securities | |
Balance at January 1, 2024 | | $ | 6,974 | | | $ | — | |
Change in fair value | | | 86 | | | | — | |
Balance at March 31, 2024 | | | 7,060 | | | | — | |
Change in fair value | | | 1,504 | | | | — | |
Balance at June 30, 2024 | | $ | 8,564 | | | $ | — | |
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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 | |
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Disaggregation of Revenue [Table Text Block] |
| | For the Three Months Ended June 30, | | | For the Six Months Ended June 30, | |
| | 2025 | | | 2024 | | | 2025 | | | 2024 | |
Product sales | | | | | | | | | | | | | | | | |
US | | $ | 173 | | | $ | 60 | | | $ | 308 | | | $ | 67 | |
Europe | | | 39 | | | | 33 | | | | 47 | | | | 108 | |
Total product sales | | $ | 212 | | | $ | 93 | | | $ | 355 | | | $ | 175 | |
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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] |
June 30, 2025 | |
Instrument | Valuation Technique | Unobservable Input | | Input Range | |
Royalties payable due to related parties | Discounted future cash flows | Revenue adjusted discount rate | | | 20.5 | % |
Trading debt securities | Probability weighted expected return | Recovery rate | | | 60.0 | % |
| | Simulated conversion price | | $ | 0.67 | |
| | Credit risk-adjusted discount rate | | | 13.7 | % |
| | Expected equity volatility | | | 91.8 | % |
| | Probability of conversion | | | 29.3 | % |
| | Probability of payment | | | 70.7 | % |
| | Expected term for conversion (years) | | | 1.6 | |
| | Expected term for payment (years) | | | 5.0 | |
December 31, 2024 | |
Instrument | Valuation Technique | Unobservable Input | | Input Range | |
Royalties payable due to related parties | Discounted future cash flows | Revenue adjusted discount rate | | | 22.5 | % |
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