Note 11 - Earnings Per Share - Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
		Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2018	Nov. 30, 2017	Feb. 28, 2018
Net Loss		$ (422,670)	$ (465,859)	$ (936,322)	$ (871,189)	$ (1,751,121)
Weighted average number of common shares outstanding —basic (in shares)	[1]	18,032,489	16,932,610	17,723,371	9,870,708
Weighted average number of common shares outstanding —diluted (in shares)	[1]	18,032,489	17,402,610	17,723,371	10,027,945
Loss per common share — basic and diluted (in dollars per share)		$ (0.02)	$ (0.03)	$ (0.05)	$ (0.09)

[1] Reflects 4 to 1 reverse split