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Note 10 - Revolving Line of Credit (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Repayments of Lines of Credit   $ 500,000 $ (0)  
Revolving Credit Facility [Member] | Summit Community Bank Second Line[Member]        
Line of Credit Facility, Maximum Borrowing Capacity       $ 1,000,000
Revolving Credit Facility [Member] | Summit Community Bank Second Line[Member] | Minimum [Member]        
Debt Instrument, Interest Rate, Effective Percentage       3.99%
Revolving Credit Facility [Member] | Summit Community Bank Second Line[Member] | Maximum [Member]        
Debt Instrument, Interest Rate, Effective Percentage       20.00%
Revolving Credit Facility [Member] | Summit Community Bank [Member]        
Repayments of Lines of Credit $ 500,000 500,000 425,000  
Line of Credit Facility, Remaining Borrowing Capacity   $ 0 $ 575,000  
Line of Credit Facility, Interest Rate During Period   8.50%