Note 10 - Debt (Details Textual)										3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($) $ / shares shares	Mar. 20, 2025 USD ($) $ / shares shares	Jan. 28, 2025 USD ($) $ / shares shares	Jan. 20, 2025 USD ($)	Oct. 10, 2024 USD ($) $ / shares shares	Aug. 15, 2024 USD ($)	Aug. 14, 2024 USD ($) $ / shares shares	Aug. 12, 2024 USD ($)	Nov. 04, 2022 USD ($)	Sep. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) shares	Mar. 31, 2025 USD ($) shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) shares
Debt Issuance Costs														$ 350,000	$ 521,000
Proceeds from Convertible Debt														5,000,000	2,941,000
Gain (Loss) on Convertible Debt Redemption										$ (772,000)			$ (127,000)	$ (4,239,000)	$ (127,000)
Consent and Waiver Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares		303,819
Anson Warrants [Member]
Class of Warrant or Right, Securities Called by Warrants or Rights, Percentage of Principal Divided by VWAP								50.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	1,870,960									1,870,960				1,870,960
Warrants and Rights Outstanding							$ 2,100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 1,870,960									$ 1,870,960				$ 1,870,960
Class of Warrant or Right, Stock Price Trigger (in dollars per share) | $ / shares	$ 3.25									$ 3.25				$ 3.25
Class of Warrant or Right, Percentage Trading Volume Threshold If Triggered	12.50%									12.50%				12.50%
Proceeds from Warrant Exercises	$ 3,090,000.00
Stock Issued During Period, Shares, Warrants Exercised (in shares) | shares	1,870,960
Anson Warrants Tranche One [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares							1,349,305
Warrants and Rights Outstanding							$ 2,100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares							$ 2.4168
Third Tranche Notes, Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares			862,699				862,699,000,000
Consideration Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares		303,819
Class of Warrant or Right Issued in Period (in shares) | shares		303,819
Warrants and Rights Outstanding		$ 600,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares		$ 2.88
Anson Warrants Tranche Two [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					1,846,128
Warrants and Rights Outstanding					$ 1,900,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares					$ 1.7664
Anson Warrants, Tranche Three [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares			862,699
Warrants and Rights Outstanding			$ 2,500,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 3.78
Streetervile Complaint [Member]
Litigation Settlement, Payment Installment One								$ 2,500,000
Litigation Settlement, Payment Installment Two								3,100,000
Streeterville Convertible Note [Member]
Debt Instrument, Face Amount									$ 11,000,000
Debt Instrument, Term (Month)									825 months
Long-Term Debt, Gross	$ 0									$ 0				$ 0		$ 0
Repayments of Debt						$ 2,500,000
Anson Convertible Notes [Member]
Debt Instrument, Face Amount								16,300,000
Long-Term Debt, Gross								$ 15,000,000
Debt Instrument, Number of Tranches								3
Placement Agent Fee, Percent of Gross Proceeds								7.00%
Long-Term Debt, Principal Only	5,400,000									5,400,000				5,400,000
Interest Payable	$ 300,000									$ 300,000				$ 300,000
Anson Convertible Notes [Member] | Conversion of Principal and Interest Into Common Stock [Member]
Debt Conversion, Original Debt, Amount																$ 4,200,000
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares																3,676,796
Gain (Loss) on Convertible Debt Redemption																$ (1,300,000)
Anson First Tranche Notes [Member]
Debt Instrument, Face Amount							$ 5,400,000
Debt Instrument, Term (Month)							15 months
Long-Term Debt, Gross							$ 2,900,000
Debt Instrument, Original Issuance Discount							8.00%
Debt Instrument, Unamortized Discount							$ 435,000
Debt Issuance Costs							521,000
Proceeds from Debt, Net of Issuance Costs							$ 4,500,000
Debt Instrument, Interest Rate, Stated Percentage							6.00%
Debt Instrument, Interest Rate in Event of Default							10.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares							$ 2.4168
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger							92.00%
Anson First Tranche Notes [Member] | Conversion of Principal and Interest Into Common Stock [Member]
Debt Conversion, Original Debt, Amount												$ 1,300,000				$ 4,200,000
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares												1,004,055				3,676,796
Gain (Loss) on Convertible Debt Redemption												$ (1,600,000)				$ (1,300,000)
Anson First Tranche Notes [Member] | Conversion of Principal Into Common Stock [Member]
Debt Conversion, Original Debt, Amount												1,300,000
Anson First Tranche Notes [Member] | Conversion of Accrued Interest Into Common Stock [Member]
Debt Conversion, Original Debt, Amount												$ 100,000
Anson First Tranche Notes [Member] | Minimum [Member]
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares							$ 0.38
Anson Second Tranche Notes [Member]
Debt Instrument, Face Amount					$ 5,400,000
Long-Term Debt, Gross					$ 3,100,000
Placement Agent Fee, Percent of Gross Proceeds					7.00%
Debt Instrument, Original Issuance Discount					8.00%
Debt Instrument, Unamortized Discount					$ 435,000
Debt Issuance Costs					$ 375,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					1,846,128
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares	$ 1.65				$ 1.7664					$ 1.65				$ 1.65
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger					92.00%
Proceeds from Convertible Debt					$ 5,000,000
Debt Issuance Costs, Gross					400,000
Debt Instrument, Interest Rate, Effective Percentage	172.00%									172.00%				172.00%
Streetervile Complaint [Member]
Payments for Legal Settlements					$ 3,100,000
Anson, Third Tranche Notes [Member]
Debt Instrument, Face Amount			$ 5,400,000
Long-Term Debt, Gross			$ 2,500,000
Placement Agent Fee, Percent of Gross Proceeds			7.00%
Debt Instrument, Original Issuance Discount			8.00%
Debt Instrument, Unamortized Discount			$ 435,000
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares			$ 3.78
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger			92.00%
Proceeds from Convertible Debt			$ 5,000,000
Debt Issuance Costs, Gross			$ 400,000
Debt Instrument, Convertible, Threshold Trading Days			7
Anson, Third Tranche Notes [Member] | Conversion of Principal and Interest Into Common Stock [Member]
Debt Conversion, Original Debt, Amount		$ 100,000		$ 100,000						$ 1,400,000	$ 4,100,000
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares		5,463								877,193	1,879,406	5,463
Gain (Loss) on Convertible Debt Redemption										$ (800,000)	$ (1,900,000)
Anson First and Third Tranche Notes [Member] | Conversion of Principal and Interest Into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares												1,009,518
Gain (Loss) on Convertible Debt Redemption												$ (1,600,000)
Anson Second and Third Tranche Notes [Member]
Liabilities, Fair Value Adjustment										$ 800,000				$ 2,700,000