Note 5 - Warrants and Equity (Details Textual) - USD ($)					1 Months Ended				9 Months Ended	12 Months Ended
	Jan. 31, 2025	Oct. 31, 2024	Mar. 31, 2024	Jun. 30, 2023	Feb. 28, 2025	Aug. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 26, 2023	Aug. 31, 2023
Loss On Issuance of Warrant Liabilities										$ (847,000)	$ 0
Warrant Liabilities, Transaction Costs										$ 993,000	$ 510,000
Stock Issued During Period, Shares, Issued for Services (in shares)							6,834
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)									20,485
Class of Warrant or Right, Outstanding (in shares)								1,372,172		7,810,033	1,372,172
Warrant Liability [Member]
Derivative Liability						$ 6,100,000
Pre-funded Warrants in 2024 Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						2,183,368
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)						$ 0.001
Class of Warrant or Right, Outstanding (in shares)								0		1,649,000	0
Series A Warrants in 2024 Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						2,466,368
Series B Warrants in 2024 Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						2,466,368
Common Warrants in 2024 Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						2.23
Common Warrants Issued In Connection With The 2023 Securities Purchase Agreement[Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		895,834
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 2.23								$ 9.6		$ 9.6
Warrants and Rights Outstanding, Term (Year)		5 years								5 years
Securities Purchase Agreement 2024 [Member]
Loss On Issuance of Warrant Liabilities						$ 800,000
Warrant Liabilities, Transaction Costs										$ 1,000,000
Pre-funded Warrants Member Issued In Connection With The 2023 Securities Purchase Agreement[Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)										229,506
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 0.001
Class of Warrant or Right, Outstanding (in shares)								229,506		0	229,506
Unregistered Warrants Issued In Connection With The 2023 Securities Purchase Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)										939,312
Combined Warrants Issued In Connection With The 2023 Securities Purchase Agreement [Member] | Institutional Investor [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 9.6
Combined Warrants Issued In Connection With The 2023 Securities Purchase Agreement [Member] | Executive Officers, Employees, Advisors and the Board of Directors [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 10.35
Equity Classified Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		36,000	3,334	10,000			3,334						6,667
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 9									$ 9.3
Warrants and Rights Outstanding, Term (Year)		10 years	10 years	10 years			10 years						5 years
Class of Warrant or Right, Vesting Period (Year)			4 years	4 years
Class of Warrant or Right, Outstanding (in shares)								289,277		1,746,993	289,277
Class of Warrant or Right, Vested and Exercisable (in shares)								266,350		1,697,744	266,350
Equity Classified Warrants [Member] | Vesting Over 4 Year Term [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		30,000
Class of Warrant or Right, Vesting Period (Year)		4 years
Equity Classified Warrants [Member] | Vesting Over 3 Year Term [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		5,000
Class of Warrant or Right, Vesting Period (Year)		3 years
Equity Classified Warrants [Member] | Vesting Immediately [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		1,000
Common Stock in 2024 Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)						283,000
Securities Purchase Agreement 2024 [Member]
Equity Issued, Purchase Price Per Share (in dollars per share)						$ 2.23
Proceeds from Issuance or Sale of Equity						$ 5,500,000
The 2023 Securities Purchase Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)								240,151
Proceeds from Issuance or Sale of Equity								$ 4,500,000
Subsequent Event [Member] | Pre-funded Warrants in 2025 Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					2,121,029
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 0.001
Subsequent Event [Member] | Series D Warrants in 2025 Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					6,543,058
Subsequent Event [Member] | Common Warrants in 2025 Agreement [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 1.07
Warrants and Rights Outstanding, Term (Year)					5 years
Subsequent Event [Member] | Series C Warrants In 2025 Warrant Inducement Offer Letter [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					5,828,570
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 1
Proceeds from Issuance or Sale of Equity					$ 5,800,000
Subsequent Event [Member] | Inducement Warrants In 2025 Warrant Inducement Offer Letter [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					11,657,140
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 0.75
Warrants and Rights Outstanding, Term (Year)					5 years
Subsequent Event [Member] | Equity Classified Warrants [Member] | Vesting Based On Performance Criteria [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	50,000
Subsequent Event [Member] | Equity Classified Warrants [Member] | Vesting Over 4 Year Term [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	50,000
Class of Warrant or Right, Vesting Period (Year)	4 years
Subsequent Event [Member] | Equity Classified Warrants [Member] | Consultant 1 [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	50,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1.64
Warrants and Rights Outstanding, Term (Year)	10 years
Subsequent Event [Member] | Equity Classified Warrants [Member] | Consultant 2 [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1.64
Warrants and Rights Outstanding, Term (Year)	10 years
Subsequent Event [Member] | Common Stock in 2025 Agreement [Member]
Stock Issued During Period, Shares, New Issues (in shares)					1,150,000
Subsequent Event [Member] | Securities Purchase Agreement 2025 [Member]
Equity Issued, Purchase Price Per Share (in dollars per share)					$ 1.07
Proceeds from Issuance or Sale of Equity					$ 3,500,000
Subsequent Event [Member] | Securities Purchase Agreement 2025 and Warrant Inducement Offer Letter [Member]
Proceeds from Issuance or Sale of Equity					$ 9,300,000