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Note 13 - Subsequent Events	6 Months Ended
Note 13 - Subsequent Events	Oct. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	13. Subsequent Events: The Company evaluated its October 31, 2020 financial statements for subsequent events through the filing date of this report. The Company is not aware of any subsequent events that would require recognition or disclosure in the financial statements.