v3.25.1
Note 6 - Line of Credit Arrangement (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2021
Dec. 31, 2020
Investment, Variable Interest Rate, Type [Extensible Enumeration] Prime Rate [Member]        
Long-Term Line of Credit, Total $ 348,843   $ 348,843    
Interest Expense, Debt 60,058 $ 56,426      
First Republic Bank [Member] | Line of Credit [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 350,000        
Debt Instrument, Basis Spread on Variable Rate 4.50%        
Debt Instrument, Interest Rate, Effective Percentage       7.75%  
Debt Instrument, Interest Rate, Stated Percentage         7.75%
Long-Term Line of Credit, Total     $ 348,843    
Interest Expense, Debt $ 6,976 $ 7,440