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Note 8 - Note Payable (Details Textual) - USD ($)
6 Months Ended
Apr. 27, 2020
Jun. 30, 2020
Jun. 30, 2019
Proceeds from Notes Payable, Total   $ 272,099
Paycheck Protection Program CARES Act [Member]      
Proceeds from Notes Payable, Total $ 272,000