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Note 7 - Convertible Notes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended		12 Months Ended
	May 10, 2024	Jan. 31, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Proceeds from Convertible Debt			$ 0	$ 2,950
Conversion of the 2025 Note into Common Stock [Member]
Debt Conversion, Original Debt, Amount					$ 2,591
Debt Conversion, Converted Instrument, Shares Issued (in shares)					2,405,573
The 2025 Note Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		805,263
Warrants and Rights Outstanding		$ 1,046
The 2025 Note [Member]
Debt Instrument, Term (Year)		18 months
Debt Instrument, Face Amount		$ 3,240
Proceeds from Convertible Debt		$ 3,000
Debt Instrument, Original Issue Discount Rate		7.40%
Debt Instrument, Interest Rate, Stated Percentage		7.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share)		$ 2.22
Convertible Debt, Fair Value Disclosures		$ 3,266
Debt Issuance Costs, Net		$ 1,312
Repayments of Debt					$ 989
An Investor [Member]
Proceeds From Issuance of Common Stock and Debt	$ 1,000
An Investor [Member] | Convertible Note 2024 [Member]
Debt Instrument, Term (Year)	5 years
Debt Instrument, Face Amount	$ 146
Debt Instrument, Basis Spread on Variable Rate	1.00%
An Investor [Member] | Security Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)	330,823

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