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Note 10 - Convertible Notes (Details Textual)							1 Months Ended	2 Months Ended	3 Months Ended		9 Months Ended
	Jul. 26, 2024 USD ($)	May 30, 2024 $ / shares	Mar. 24, 2024 USD ($) $ / shares	Mar. 01, 2024 USD ($)	May 01, 2023 USD ($)	Apr. 27, 2023 USD ($) $ / shares	Dec. 31, 2023 USD ($)	May 28, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)	Jun. 09, 2023 USD ($)
Amortization of Debt Issuance Costs and Discounts									$ 138,000	$ 655,000	$ 871,000	$ 1,156,000
Gain (Loss) on Extinguishment of Debt									(13,000)	0	(13,000)	0
Repayments of Convertible Debt											1,990,000	770,000
Fair Value Adjustment of Warrants									$ (0)	$ (0)	$ (114,000)	$ (216,000)
The 2023 Private Placement [Member]
Proceeds from Convertible Debt					$ 1,200,000
Debt Issuance Costs, Net					700,000
Unsecured Convertible Notes [Member]
Debt Instrument, Face Amount			$ 525,000
Debt Instrument, Convertible, Conversion Price | $ / shares		$ 4.9	$ 0.14
Debt Instrument, Convertible, Number of Equity Instruments		107,146	3,750,000
Embedded Derivative, Fair Value of Embedded Derivative Liability													$ 159,000
Embedded Derivative, Fair Value								$ 242,000
Unrealized Gain (Loss) on Derivatives								$ 83,000
Debt Instrument, Interest Rate, Effective Percentage									144.00%		144.00%
Amortization of Debt Issuance Costs and Discounts									$ 20		$ 35
Debt Issuance Costs, Net			$ 130,000
Original Issue Discount Senior Secured Convertible Debentures [Member]
Debt Instrument, Face Amount					3,300,000
Debt Instrument, Convertible, Conversion Price | $ / shares						$ 1.3
Debt Instrument, Convertible, Number of Equity Instruments		72,528				2,538,464
Embedded Derivative, Fair Value						$ 209,000								$ 169,000
Debt Instrument, Interest Rate, Effective Percentage													173.00%
Amortization of Debt Issuance Costs and Discounts									12,000,000		$ 800,000
Debt Instrument, Unamortized Discount					300,000
Gain (Loss) on Extinguishment of Debt									$ (13,000)
Debt Instrument, Increase (Decrease), Net						183,000
Debt Instrument, Redemption Price, Amount Per Month						$ 193,000
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger						90.00%
Debt Instrument, Convertible, Threshold Trading Days						10
Debt Instrument, Redemption Price, Percentage						20.00%
Repayments of Convertible Debt	$ 433,000			$ 45,000			$ 126,000
Fair Value Adjustment of Warrants					40,000
Debt Issuance Costs, Net					300,000
Original Issue Discount Senior Secured Convertible Debentures [Member] | The 2023 Private Placement [Member]
Debt Instrument, Unamortized Discount					$ 300,000
Original Issue Discount Senior Secured Convertible Debentures [Member] | Measurement Input, Redemption in Stock [Member]
Debt Instrument, Redemption Price, Amount Per Month						$ 193,000
Original Issue Discount Senior Secured Convertible Debentures [Member] | Post-split Amount [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares		$ 45.5				$ 45.5

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