Note 9 - ELOC Commitment Note Payable (Details Textual) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jul. 31, 2025	Dec. 31, 2024	Jun. 30, 2024
Convertible Notes Payable, Current	$ 2,590,000			$ 2,590,000			$ 0
Derivative Liability, Fair Value Adjustment		$ 200,000
Gain (Loss) on Extinguishment of Debt	0		$ 71,000	$ 52,000	$ 14,591,000
Conversion of ELOC Commitment Note to Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)		56,769
Debt Conversion, Converted Instrument, Amount		$ 500,000
Gain (Loss) on Extinguishment of Debt		$ (22,000)
June 2024 Commitment Note [Member]
Debt Instrument, Face Amount								$ 350,000
Debt Instrument, Interest Rate, Stated Percentage								5.00%
Debt Instrument, Fair Value Disclosure								$ 600,000
Convertible Notes Payable, Current								300,000
ELOC Purchase Agreement, Derivative Portion [Member]
Derivative Liability						$ 5,700,000
Increase (Decrease) in Derivative Liabilities	$ 600,000
Embedded Derivative Financial Instruments [Member] | June 2024 Commitment Note [Member]
Embedded Derivative, Fair Value of Embedded Derivative Liability								$ 300,000
ELOC Commitment Note [Member]
Debt Instrument, Face Amount						$ 10,000,000
Debt Instrument, Interest Rate, Stated Percentage						5.00%
Long-Term Debt, Fair Value						$ 15,000,000
Long-Term Debt						$ 9,300,000