15. Income Taxes (Details-Income source) - USD ($)	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income before income taxes	$ 11,340,000	$ 14,278,000
Federal [Member]
Income before income taxes	10,088,000	12,607,000
Foreign [Member]
Income before income taxes	$ 1,252,000	$ 1,671,000

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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