v3.26.1
Credit Arrangements (Details) - USD ($)
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Credit Arrangements [Abstract]    
Pledged bonds $ 4,410,721 $ 8,843,417
Asset Pledged as Collateral [Member]    
Credit Arrangements [Abstract]    
Pledged bonds 21,729,686  
Cash Management Advance [Member]    
Credit Arrangements [Abstract]    
Borrowings $ 0  
Cash Management Advance [Member] | Variable Rate [Member] | Maximum [Member]    
Credit Arrangements [Abstract]    
Period of interest under CMA 90 days  
Cash Management Advance [Member] | Fixed Rate [Member] | Maximum [Member]    
Credit Arrangements [Abstract]    
Period of interest under CMA 30 days