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Note 9 - Notes Payable (Details Textual) - USD ($)											3 Months Ended		6 Months Ended		12 Months Ended
Note 9 - Notes Payable (Details Textual) - USD ($)	Apr. 28, 2025	Apr. 16, 2025	Jan. 10, 2025	Jan. 07, 2025	Jan. 07, 2025	Sep. 06, 2024	May 31, 2024	Mar. 28, 2023	Aug. 17, 2022	Jun. 24, 2020	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2023	Feb. 27, 2025	Aug. 01, 2023	Aug. 14, 2022	Apr. 06, 2022
Debt extinguishment loss											$ (99,000)	$ 75,000	$ 51,000	$ 75,000
Long-Term Debt, Gross											825,000		825,000
Michael King [Member] \| Notes Payable, Other Payables [Member]
Debt Instrument, Face Amount																			$ 1,000,000
Debt Instrument, Periodic Payment	$ 37,000
Repayments of Debt	$ 420,000
Debt Instrument, Periodic Payment, Principal								$ 25,000
Notes Payable											339,000		$ 339,000
Debt Instrument, Interest Rate During Period								20.00%
Chemular Warrants [Member]
Class of Warrant or Right, Issued During Period					3,700,000								3,700,000
Warrants and Rights Outstanding											148,000		$ 148,000
Notes Issued To Settle Outstanding Accounts Payable [Member]
Debt Conversion, Original Debt, Amount				$ 495,000
Conversion of April 2022 Note to Shares Under Subscription Agreement [Member]
Debt Conversion, Original Debt, Amount							$ 100,000
February 2025 Short-term Loan [Member]
Debt Instrument, Face Amount																$ 100,000
Debt Instrument, Interest Rate, Stated Percentage																10.00%
Chemular Note [Member]
Debt Instrument, Face Amount				$ 370,000	$ 370,000
Debt Instrument, Interest Rate, Stated Percentage				10.00%	10.00%
Debt Instrument, Periodic Payment				$ 10,000
Debt extinguishment loss													23,000
Repayments of Debt		$ 319,000
Receivables Financing Agreement [Member]
Debt Instrument, Face Amount						$ 750,000
Debt Instrument, Periodic Payment						$ 25,687.5
Debt Instrument, Origination Fee						1.00%
Debt Instrument, Total Payments to Be Made						$ 1,027,500
Amended Pinnacle Receivables Financing Agreement [Member]
Debt Instrument, Face Amount			$ 1,644,000
Debt Instrument, Periodic Payment			31,615
Debt extinguishment loss													126,000
Proceeds From Debt, Gross			1,188,000
Proceeds from Debt, Net of Issuance Costs			597,000
Pinnacle Receivables Financing Agreement [Member]
Repayments of Debt		1,250,000
Long-Term Debt, Gross			$ 591,000
Debt Instrument, Unamortized Discount		$ 99,000
July 2023 Note Financing [Member] \| Related Party [Member]
Debt Instrument, Face Amount																	$ 1,400,000
Debt Instrument, Interest Rate, Stated Percentage	10.00%																21.00%
Debt Instrument, Periodic Payment	$ 18,000
Debt Instrument, Periodic Payment, Principal															$ 1,070,000
Debt Instrument, Periodic Payment, Interest															$ 70,000
Interest Paid, Including Capitalized Interest, Operating and Investing Activities	75,000
Notes Payable											$ 336,000		$ 336,000
The “Loan” [Member]
Debt Instrument, Face Amount																		$ 300,000
Repayments of Debt	$ 308,000
Debt Instrument, Interest Rate During Period									10.00%
Debt Issuance Costs, Gross									$ 3,000
EID Loan [Member] \| Don Polly [Member]
Debt Instrument, Interest Rate, Stated Percentage										3.75%
Proceeds from Issuance of Debt										$ 150,000