Note 18 - Stockholders' Equity - Warrants Activity (Details) - Warrants [Member] - $ / shares	6 Months Ended	12 Months Ended
	Aug. 31, 2026	Feb. 28, 2026	Feb. 28, 2025
Warrants outstanding, warrants (in shares)	4,758,581	3,015,885
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 4.15	$ 5.36
Warrants outstanding, weighted average remaining contractual life (Year)	3 years 3 months 21 days	3 years 5 months 23 days	3 years 10 months 2 days
Granted (in shares)	1,297,558	1,998,104
Granted, weighted average exercise price (in dollars per share)	$ 3.64	$ 3.34
Granted, weighted average remaining contractual life (Year)	4 years 7 months 24 days	3 years 11 months 15 days
Exercised, warrants (in shares)	(8,278)	(237,429)
Exercised, weighted average exercise price (in dollars per share)	$ 3.02	$ 3.02
Forfeited or cancelled, warrants (in shares)	0	(17,979)
Forfeited or cancelled, weighted average exercise price (in dollars per share)	$ 0	$ 128.32
Warrants outstanding, warrants (in shares)	6,047,861	4,758,581
Warrants outstanding, weighted average exercise price (in dollars per share)	$ 4.05	$ 4.15