Note 1 - Description of the Business and Basis of Presentation (Details Textual)						3 Months Ended		9 Months Ended
	Nov. 30, 2025 USD ($) $ / shares shares	Nov. 10, 2025 shares	Nov. 05, 2025 USD ($) $ / shares shares	Oct. 03, 2024 $ / shares	Feb. 08, 2024 $ / shares	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)	Nov. 14, 2025 $ / shares	Dec. 31, 2024 USD ($) $ / shares shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares				$ 0.001	$ 0.001	$ 0.001		$ 0.001			$ 0.001
Net Income (Loss) Attributable to Parent						$ (2,615,163)	$ (3,459,754)	$ 3,164,500	$ (12,705,049)
Fair Value Adjustment of Warrants						(5,000)	$ (0)	(8,511,000)	(0)
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation								(7,335,102)	$ (4,056,700)
Working Capital (Deficit)						21,321,682		21,321,682
Retained Earnings (Accumulated Deficit)						(220,159,387)		(220,159,387)			$ (218,381,218)
Cash						$ 16,628,558		$ 16,628,558			$ 3,613,996
Preferred Stock, Shares Authorized (in shares) | shares						25,000,000		25,000,000			25,000,000
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares			$ 0.001
Series G Preferred Stock [Member] | Series G Securities Purchase Agreement [Member] | Subsequent Event [Member]
Preferred Stock, Shares Authorized (in shares) | shares	100,000		100,000
Stock Issued During Period, Shares, New Issues (in shares) | shares	12,000	12,000	12,000
Proceeds from Issuance or Sale of Equity	$ 11,500,000		$ 12,000,000
Series G Preferred Stock [Member] | Series G Certificate of Designation [Member] | Subsequent Event [Member]
Preferred Stock, Stated Value Per Share (in dollars per share) | $ / shares	$ 1,000									$ 1,000
Approximate [Member]
Cash						$ 16,629,000		$ 16,629,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				50	20