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Note E - Leases - Maturities of Operating and Finance Lease (Details) - USD ($)
Dec. 31, 2020
Apr. 01, 2019
Operating lease, Fiscal 2021 $ 14,634  
Finance lease, Fiscal 2021 27,222  
Operating lease, Fiscal 2022 4,878  
Finance lease, Fiscal 2022 108,888  
Operating lease, Fiscal 2023  
Finance lease, Fiscal 2023 108,888  
Operating lease, Fiscal 2024  
Finance lease, Fiscal 2024 108,888  
Operating lease, Fiscal 2025  
Finance lease, Fiscal 2025 54,444  
Operating lease, Total undiscounted lease payments 19,512  
Finance lease, Total undiscounted lease payments 408,330  
Operating lease, Less: imputed interest (281)  
Finance lease, Less: imputed interest (14,717)  
Present value of lease liability, operating lease   $ 63,000
Present value of lease liability, finance lease 393,613  
Accrued Expense and Other Noncurrent Liabilities [Member]    
Present value of lease liability, operating lease $ 19,231 $ 63,000