Note 12 - Shareholders' Equity - Summary of Sales Under Offering (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Net proceeds	$ 982	$ 0
The 2022 ATM Offering [Member]
Shares of common stock issued (in shares)	3,051,837
Gross proceeds	$ 1,009
Commission paid to agents	(30)
Net proceeds	$ 979
The 2022 ATM Offering [Member] \| Arithmetic Average [Member]
Average price per share (in dollars per share)	$ 0.33

The cash inflow from issuance of common stock, net of issuance cost.

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The cash inflow from the additional capital contribution to the entity.

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