Note 8 - Income Taxes	6 Months Ended
Note 8 - Income Taxes	Sep. 30, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 8. INCOME TAXES Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. We had no unrecognized tax benefits as of September 30, 2020, and we do not expect any significant unrecognized tax benefits within 12 months of the reporting date. We recognize interest and penalties related to income tax matters in income tax expense. As of September 30, 2020 we had no accrued interest related to uncertain tax positions. The tax years 2016 through 2019 remain open to examination by the major taxing jurisdictions to which we are subject.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.