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Note 11 - Subsequent Events	12 Months Ended
Note 11 - Subsequent Events	Mar. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 11. SUBSEQUENT EVENTS On May 6, 2020 we announced that our Board had declared a quarterly cash dividend of $1.00 per share of Common Stock to be paid May 29, 2020 to shareholders of record as of the close of business May 18, 2020.