Note 4 - Capital Stock - Summary of Warrants Activity (Details) - $ / shares	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2025	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Aug. 23, 2024
Warrants outstanding (in shares)		2,262,203
Warrants outstanding and exercisable (in shares)
Warrants outstanding and exercisable (in shares)		2,262,203
Warrants Issued on March 31, 2023 [Member]
Warrants outstanding (in shares)		1,789,527
Exercise Price (in dollars per share)		$ 3.41
Warrants outstanding and exercisable (in shares)
Warrants outstanding and exercisable, exercise price (in dollars per share)
Warrants outstanding and exercisable (in shares)		1,789,527
Warrants outstanding and exercisable, exercise price (in dollars per share)		$ 3.41
Warrants Issued On June 30, 2024 [Member]
Warrants outstanding (in shares)		472,676
Exercise Price (in dollars per share)		$ 3.41
Warrants outstanding and exercisable (in shares)
Warrants outstanding and exercisable, exercise price (in dollars per share)
Warrants outstanding and exercisable (in shares)		472,676
Warrants outstanding and exercisable, exercise price (in dollars per share)		$ 3.41
Common Warrants [Member]
Warrants outstanding (in shares)		2,262,203		2,272,203	2,401,047
Exercise Price (in dollars per share)		$ 3.41		$ 3.41
Warrants outstanding and exercisable (in shares)	2,272,203	2,272,203	103,453	103,453
Warrants outstanding and exercisable, exercise price (in dollars per share)	$ 3.41	$ 3.41	$ 69.03	$ 69.03
Granted, warrants (in shares)				24,104
Granted, warrants, exercise price (in dollars per share)				$ 68.4
Make Whole Provision, warrants (in shares)				2,426,986
Make Whole Provision, weighted average exercise price (in dollars per share)				$ 3.41
Exercised, warrants (in shares)	(10,000)	(10,000)	0	(282,314)
Exercised, warrants, exercise price (in dollars per share)	$ 3.41	$ 3.41		$ 3.41
Expired, warrants (in shares)				(26)
Expired, warrants, exercise price (in dollars per share)				$ 2,575.38
Warrants outstanding and exercisable (in shares)		2,262,203		2,272,203
Warrants outstanding and exercisable, exercise price (in dollars per share)		$ 3.41		$ 3.41