Note 15 - Stock-based Compensation - Summary of the non-vested stock option activity (Details)	12 Months Ended
	Mar. 31, 2022 $ / shares shares
Notes To Financial Statements [Abstract]
Number of options Outstanding, Non - vested | shares	283,637
Options granted, Number of options | shares	2,115,400
Options vested, Number of options | shares	(369,672)
Options forfeited and cancelled, Number of options | shares	(29,895)
Number of options Outstanding, Non - vested | shares	1,999,470
Outstanding, Weighted average grant date fair value (in CAD per share) | $ / shares	$ 5.97
Options granted, Weighted average grant date fair value (in CAD per share) | $ / shares	1.75
Options vested, Weighted average grant date fair value (in CAD per share) | $ / shares	4.15
Options forfeited and cancelled, Weighted average grant date fair value (in CAD per share) | $ / shares	1.93
Outstanding, Weighted average grant date fair value (in CAD per share) | $ / shares	$ 1.91