Note 6 - Income Taxes: Schedule of Provision for Income Tax Expense (Benefit) (Details) - USD ($)	3 Months Ended	6 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Details
Current Federal Tax Expense (Benefit)			$ 2,943,354	$ 1,799,694
Deferred taxes			797	278,054
Income tax provision	$ 1,401,942	$ 768,539	$ 2,944,151	$ 2,077,748

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

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