Note 6 - Fair Value of Financial Instruments - Liabilities Measure on Recurring Basis (Details) - Fair Value, Recurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Derivative liabilities	$ 87	$ 224
Notes Warrants [Member]
Derivative liabilities	78	197
Additional Warrants [Member]
Derivative liabilities	$ 9	$ 27

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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+ Details