Note 9 - Common Stock (Details Textual)	3 Months Ended	9 Months Ended
	Nov. 30, 2021 USD ($) $ / shares shares	Nov. 30, 2021 USD ($) $ / shares shares	Aug. 31, 2021 $ / shares shares	Feb. 28, 2021 $ / shares shares
Common Stock, Shares Authorized (in shares)	495,000,000	495,000,000	495,000,000	495,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Common Stock, Voting Rights, Number of Votes Per Share			1
Preferred Stock, Shares Authorized (in shares)			5,000,000
Preferred Stock, No Par Value (in dollars per share) | $ / shares			$ 0
Treasury Stock, Shares, Acquired (in shares)		8,814,411
Treasury Stock, Value, Acquired, Par Value Method | $	$ 253,557	$ 813,261