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Note G - Note Receivable - Summary of Note Receivable (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Note receivable $ 295,000 $ 295,000  
Allowance for doubtful account (100,000) 0  
Note receivable, net of allowance 195,000 295,000  
Current portion, net of allowance 82,000 295,000 $ 295,000
Note receivable, net of allowance $ 113,000 $ 0