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Note 4 - Loans (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 16 Months Ended
Sep. 19, 2025
Oct. 01, 2023
Mar. 20, 2021
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2025
Jun. 03, 2024
May 29, 2024
Repayments of Long-Term Debt           $ 108,953 $ 71,121        
Revolving Credit Facility [Member]                      
Line of Credit Facility, Maximum Borrowing Capacity                     $ 475,000
Proceeds from Lines of Credit                 $ 0    
Letter of Credit [Member]                      
Line of Credit Facility, Maximum Borrowing Capacity                   $ 474,229  
Proceeds from Lines of Credit               $ 0      
Debit Arrangement to Finance Purchase of Output Solutions Sorter [Member]                      
Debt Instrument, Face Amount     $ 165,996                
Debt Instrument, Term (Month)     36 months                
Debt Instrument, Interest Rate, Stated Percentage     3.95%                
Debt Instrument, Periodic Payment     $ 4,902                
Repayments of Long-Term Debt       $ 0 $ 0 0 14,312        
Debit Arrangement to Finance Purchase of Output Solutions Folder and Inserter [Member]                      
Debt Instrument, Face Amount   $ 811,819                  
Debt Instrument, Term (Month)   66 months                  
Debt Instrument, Interest Rate, Stated Percentage   6.75%                  
Debt Instrument, Periodic Payment   $ 16,017                  
Debt Instrument, Periodic Payment, Interest   $ 4,744                  
Repayments of Long-term Debt and Interest       47,953 $ 47,953 143,859 $ 98,121        
Debit Arrangement to Finance Purchase of Output Solutions Printer [Member]                      
Debt Instrument, Face Amount $ 1,017,954                    
Debt Instrument, Interest Rate, Stated Percentage 6.75%                    
Debt Instrument, Periodic Payment $ 20,088                    
Debt Instrument, Periodic Payment, Interest $ 5,758                    
Long-Term Line of Credit       226,212   226,212   226,212 226,212    
Line of Credit Facility, Remaining Borrowing Capacity       $ 791,742   $ 791,742   $ 791,742 $ 791,742