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Note 4 - Long-term Debt (Details Textual) - USD ($)
1 Months Ended 6 Months Ended 12 Months Ended
Aug. 15, 2022
Feb. 05, 2021
Jul. 13, 2020
May 08, 2020
Apr. 30, 2020
Sep. 30, 2021
Apr. 30, 2021
Jan. 31, 2021
Jun. 30, 2022
Dec. 31, 2021
Additional Notes [Member]                    
Debt Instrument, Interest Rate, Effective Percentage                 3.01% 3.00%
Debt Instrument, Interest Rate, Increase (Decrease)                 2.00%  
Repayments of Long-Term Debt, Total                 $ 70,000 $ 140,000
Notes Payable, Total                 $ 3,490,000  
Additional Notes [Member] | Subsequent Event [Member]                    
Repayments of Long-Term Debt, Total $ 75,000                  
Additional Notes [Member] | London Interbank Offered Rate (LIBOR) [Member]                    
Debt Instrument, Basis Spread on Variable Rate                 2.00%  
Paycheck Protection Program CARES Act [Member]                    
Proceeds from Issuance of Unsecured Debt   $ 142,777 $ 150,000 $ 142,775 $ 8,000          
Debt Instrument, Term (Year)     30 years              
Debt Instrument, Interest Rate, Stated Percentage     3.75%              
Debt Instrument, Periodic Payment, Total     $ 731              
Paycheck Protection Program CARES Act 1 [Member]                    
Debt Instrument, Decrease, Forgiveness           $ 142,777 $ 8,000 $ 142,775    
Paycheck Protection Program CARES Act 2 [Member]                    
Debt Instrument, Decrease, Forgiveness           $ 841 $ 87 $ 866