Note 6 - Income Taxes - Schedule of Income Tax Provisions (Details) - USD ($)	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Current taxes
Federal, Current taxes	$ 2,710,658	$ 3,107,376
State, Current taxes	(13,176)	125,796
Deferred taxes
Federal, Deferred taxes	74,651	(30,012)
State, Deferred taxes	3,128	(1,257)
Income tax provision	$ 2,775,261	$ 3,201,903

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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