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Note 3 - Debt	12 Months Ended
Note 3 - Debt	Mar. 31, 2020
Notes to Financial Statements
Debt Disclosure [Text Block]	3 . DEBT On December 12, 2019, the Company’s $5,000,000 revolving line of credit facility expired and was not renewed. The Company did not have any borrowings outstanding under the Credit Facility at expiration and did not advance any funds under the Credit Facility during the fiscal year ended March 31, 2020.