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Note 4 - Business Combination (Details Textual) - Evoke Neuroscience, Inc. [Member] $ / shares in Units, $ in Thousands |  | 3 Months Ended
--- | --- | ---
Apr. 30, 2025 USD ($) Rate $ / shares | Mar. 31, 2025 USD ($)
Payments to Acquire Businesses, Gross | $ 3,000 |
Business Combination, Consideration Transferred, Equity Interest | $ 3,000 |
Business Combination, Price Per Share (in dollars per share) | $ / shares | $ 3.5 |
Business Combination, Contingent Consideration, Liability | $ 478 |
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount | $ 500 |
Business Combination, Acquiree's Revenue since Acquisition Date, Actual |  | $ 374
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual |  | $ (131)
Measurement Input, Discount Rate [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) | Rate | 0.036 |
Measurement Input, Discount Rate [Member] | Valuation Technique, Monte Carlo Pricing Model [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) | Rate | 0.035 |
Measurement Input, Assumed Income Tax Rate [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) | Rate | 0.265 |
Measurement Input, Assumed Income Tax Rate [Member] | Valuation Technique, Monte Carlo Pricing Model [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) | Rate | 0.265 |
Measurement Input, Price Volatility [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) | Rate | 0.024 |
Measurement Input, Price Volatility [Member] | Valuation Technique, Monte Carlo Pricing Model [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) | Rate | 0.016 |
Earn Out Shares [Member] |  |
Business Combination, Contingent Consideration, Liability | $ 500 |
Business Combination, Contingent Consideration, Earnout Period (Month) | 36 months |

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