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Note 2 - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Retained Earnings (Accumulated Deficit), Total	$ (166,365)	$ (160,121)
Cash and Cash Equivalents, at Carrying Value, Total	$ 5,287	$ 2,371
Cash, Percentage Held in One Financial Institution	100.00%
Cash, Uninsured Amount	$ 5,000

X

- Definition

Percentage of cash held in one financial institution.

+ References

No definition available.

+ Details

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X

- Definition

Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

+ References

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X

- Definition

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

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X

- Definition

Amount of accumulated undistributed earnings (deficit).

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