Note 4 - Business Combination (Details Textual) - Evoke Neuroscience, Inc. [Member] $ / shares in Units, $ in Thousands		4 Months Ended
Apr. 30, 2025 USD ($) Rate $ / shares	Apr. 30, 2025 USD ($) Rate $ / shares
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	$ 3.5
Business Combination, Contingent Consideration, Liability	$ 478	$ 478
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount	$ 500	500
Business Combination, Acquiree's Revenue since Acquisition Date, Actual		514
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual		$ (256)
Measurement Input, Discount Rate [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) \| Rate	0.036	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	0.035
Measurement Input, Assumed Income Tax Rate [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) \| Rate	0.265	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	0.265
Measurement Input, Price Volatility [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input (Rate) \| Rate	0.024	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	0.016
Earn Out Shares [Member]
Business Combination, Contingent Consideration, Liability	$ 500	$ 500
Business Combination, Contingent Consideration, Earnout Period (Month)	36 months	36 months

The earnout period.

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Per share price of saleable stock paid or offered to be paid by acquirer in business combination.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Maximum amount of estimate for undiscounted range of outcomes in contingent consideration arrangement in business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Value of input used to measure liability in contingent consideration arrangement in business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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