Note 15 - Commitments - Operating Leases (Details) - Scenario, Forecast [Member] - USD ($)	12 Months Ended
	Feb. 28, 2020	Feb. 28, 2019	Feb. 28, 2018
Lease expiration date	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Lease start date	Mar. 01, 2019	Mar. 01, 2018	Mar. 01, 2017
Amount per month	$ 42,000	$ 40,000	$ 38,000