Note 8 - Warrants (Details Textual) - USD ($)														1 Months Ended		3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 19, 2025	Aug. 22, 2025	Jul. 24, 2025	Jul. 21, 2025	Jul. 18, 2025	Jul. 11, 2025	Jun. 17, 2025	Jun. 09, 2025	Jun. 06, 2025	Jun. 05, 2025	May 05, 2025	Mar. 17, 2025	Feb. 07, 2025	May 31, 2025	Mar. 31, 2025	Sep. 30, 2025		Sep. 30, 2025		Sep. 30, 2024	Dec. 31, 2024	Aug. 21, 2025	Jul. 17, 2025	Jul. 15, 2025	Jun. 30, 2025	May 04, 2025	Oct. 31, 2024	Aug. 27, 2024	Aug. 26, 2024	Jul. 25, 2024	May 31, 2024	Apr. 12, 2024	Mar. 06, 2024
Accrued Expenses Settled With Warrants																		$ 350,000		$ 0
Series F Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 1.8149				$ 1.1908					$ 0.8294	$ 1.2				$ 0.8294		$ 0.8294		$ 30		$ 2.19				$ 1.1		$ 20.19					$ 30
Class of Warrant or Right, Issued (in shares)	272,599	275,497	456,621	357,143	714,286	671,818				2,054,262	602,846	415,420	450,390
Class of Warrant or Right, Exercised (in shares)																3,622,918		3,622,918
Stock Issued During Period, Shares, Warrant Exercises (in shares)																3,622,918		3,622,918		16,590
Proceeds from Warrant Exercises																$ 3,804,318		$ 3,804,318		$ 497,701
Deemed Dividend on Warrants																		$ 138,813			$ 363,576
Series F Warrants [Member] | Alpha [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	272,599	275,497	456,621	357,143	714,286	671,818	797,067	838,364	418,831		602,846	415,420	450,390																24,765	21,598	32,659	28,378	16,588
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1.8342	$ 1.8149	$ 2.19	$ 1.4	$ 1.4	$ 1.1908	$ 1.2546	$ 1.1928	$ 1.1938		$ 0.8294	$ 1.2036	$ 2.2203	$ 0.8294							$ 1.1		$ 1.1908	$ 2.19					$ 20.19	$ 23.15	$ 32.15	$ 37	$ 60.29
Warrants and Rights Outstanding, Term (Year)	3 years	3 years	3 years	3 years	3 years	3 years	3 years	3 years	3 years		3 years	3 years	3 years																3 years	3 years	3 years	3 years	3 years
Class of Warrant or Right, Issued (in shares)	272,598	275,497	456,621	357,143	714,286	671,818	797,067	838,364	418,831
Class of Warrant or Right, Conversion Price of Warrants or Rights (in dollars per share)	$ 1.8342	$ 1.8149	$ 2.19	$ 1.4	$ 1.4	$ 1.1908	$ 1.2546	$ 1.1928	$ 1.1938
Series B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)											$ 0.8294														$ 0.8294	$ 1.9445
Warrants and Rights Outstanding																									$ 12,960
Class of Warrant or Right, Exercised (in shares)																7,868,924		10,089,612
Stock Issued During Period, Shares, Warrant Exercises (in shares)																7,868,924		10,089,612
Proceeds from Warrant Exercises																$ 6,526,485		$ 8,317,002		$ 0
Accrued Expenses Settled With Warrants																		$ 350,000
Class of Warrant or Right, Held By Owner (in shares)																		267,849
Deemed Dividend on Warrants																		$ 2,426,968
Series F and Series B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)																$ 1.7296	[1]	$ 1.7296	[1]		4.96
Class of Warrant or Right, Intrinsic Value																$ 1,365,692		$ 1,365,692
Series A and B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)														$ 0.8294	$ 1.2	$ 1.9445	[1]	$ 1.9445	[1]		$ 1.9445
Warrants and Rights Outstanding, Term (Year)																											5 years
Class of Warrant or Right, Issued (in shares)														3,057,622	2,582,234
Deemed Dividend on Warrants																		$ 4,942,669
Series A Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)																$ 1.9445		$ 1.9445
Class of Warrant or Right, Exercised (in shares)																		63,017
Stock Issued During Period, Shares, Warrant Exercises (in shares)																		63,017
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)																2		2

[1] Reflects the exercise price after the May 2025 Down Round Trigger on May 5, 2025 as described above.