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Note 9 - Stockholders' Equity and Common Stock Warrants (Details Textual) - USD ($) $ in Millions				12 Months Ended
	Dec. 11, 2024	Apr. 01, 2024	Feb. 26, 2024	Dec. 31, 2025	May 12, 2025
Series A Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		2,532,285
Prefunded Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		449,023
Class of Warrant or Right, Exercised	449,023		499,995
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	45		36
Stock Issued During Period, Shares, Exercise Of Warrants	448,978		495,959
Private Placement [Member]
Stock Issued During Period, Shares, New Issues		2,083,262
Proceeds from Issuance or Sale of Equity		$ 50.0
Payments of Stock Issuance Costs		$ 3.6
May 2025 At-the-market Offering [Member]
Stock Issued During Period, Shares, New Issues				550,000
Payments of Stock Issuance Costs				$ 0.1
Share Sales Agreement, Maximum Amount					$ 50.0
Proceeds from Issuance of Common Stock				$ 4.7

X

- Definition

Number of warrants or rights exercised.

+ References

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- Definition

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+ References

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+ References

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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