Note 9 - Stockholders' Equity - Stock Option Activity (Details)	3 Months Ended
	May 31, 2022 $ / shares shares
Outstanding stock options as of February 28: (in shares)	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	27,668
Exercised (in shares)	0
Cancelled/forfeited (in shares)	0
Outstanding stock options as of May 31: (in shares)	27,668
Weighted average exercise price (in dollars per share) | $ / shares	$ 6.38
Weighted average remaining contractual term (in years) (Year)	9 years 11 months 12 days