Note 8 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Sep. 30, 2023	Sep. 25, 2023	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Change in fair value of derivative warrant liabilities			$ (1,395)	$ (0)
Class of warrant or right, exercise price of warrants or rights (in CAD per share)			$ 1.17		$ 1.72
Private Placement [Member]
Stock issued during period, shares, new issues (in shares)	1,951,371
Proceeds from issuance of common stock, net		$ 7,338
Pre funded warrants			2,106,853
Purchase Agreement [Member]
Stock issued warrents exercisable		4,643,244
Beneficial owner percentage		5.50%
Proceeds from warrant exercises		$ 2,500
Common Warrant and Pre-Funded Warrant [Member]
Sale of stock, price per share	$ 1.848
Stock issued warrents exercisable	2,536,391
Pre-funded Warrants [Member]
Change in fair value of derivative warrant liabilities			$ 1,631
Pyment Of issuance cost warrants		$ 45	84
Proceeds from Common Shares			$ 3,047
Stock issued warrents exercisable	2,106,853
Number outstanding (in shares)			1,366,419
Pre funded warrants			740,480
Class of warrant or right, exercise price of warrants or rights (in CAD per share)	$ 0.0001		$ 0.0001
Common Stock [Member]
Pyment Of issuance cost warrants			$ 78
Proceeds from Common Shares			$ 2,822
Number outstanding (in shares)			2,536,391
Class of warrant or right, exercise price of warrants or rights (in CAD per share)	$ 3.003		$ 3.003
Common Stock [Member] | Private Placement [Member]
Pre funded warrants exercised into common shares			740,480
Common Stock [Member] | Pre-funded Warrants [Member]
Pre funded warrants exercised into common shares			740,457