Note 6 - Income Taxes - Schedule of Income Tax Provisions (Details) - USD ($)	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Current taxes
Federal, Current taxes	$ 3,107,376	$ 5,899,574
State, Current taxes	125,796	160,670
Deferred taxes
Federal, Deferred taxes	(30,012)	31,800
State, Deferred taxes	(1,257)	4,108
Income tax provision	$ 3,201,903	$ 6,096,152

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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