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Note 7 - Notes Payable (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Jun. 17, 2020
Aug. 31, 2023
Mar. 31, 2025
Mar. 31, 2024
Jul. 31, 2022
Proceeds from Notes Payable     $ 0 $ 1,700,000  
Revolving Credit Facility [Member]          
Debt Instrument, Interest Rate, Stated Percentage         2.50%
Capchase [Member] | Subordinated Debt [Member] | Revolving Credit Facility [Member]          
Debt Instrument, Interest Rate, Stated Percentage   9.00%      
Interest Expense, Debt     200,000 400,000  
Debt Instrument, Face Amount   $ 1,700,000      
Debt Instrument, Periodic Payment   $ 73,100      
SBA Loan [Member]          
Proceeds from Notes Payable $ 200,000        
Debt Instrument, Term (Year) 30 years        
Debt Instrument, Interest Rate, Stated Percentage 3.75%        
SBA Loan [Member] | Maximum [Member]          
Interest Expense, Debt     $ 10,000 $ 10,000