Note 10 - Income Taxes: Schedule of Provision for Income Tax Expense (Benefit) (Details) - USD ($)	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Details
Current Federal Tax Expense (Benefit)	$ 3,499,474	$ 3,520,126
Deferred taxes	339,358	(319,501)
Income tax provision	$ 3,838,832	$ 3,200,625

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

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Data Type:	xbrli:monetaryItemType
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