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Note H - Right-of-Use Assets and Lease Liabilities - Right-of-Use Assets and Liabilities (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Jul. 01, 2019
Jun. 30, 2019
ROU assets - operating leases obtained in exchange for lease liabilities - operating leases $ 73,719 $ 73,719      
Amortization of ROU assets for the 6 months ending December 31, 2019 (21,424) (21,425)    
ROU assets - operating leases at December 31, 2019 $ 52,295 52,295    
Lease liabilities - operating leases on adoption date   57,642   $ 80,659  
Payments on lease liabilities   (23,017)    
Lease liabilities - operating leases due in the 12 months ending December 31, 2020   45,343    
Lease liabilities - operating leases due in the 12 months ending December 31, 2021   $ 12,299