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Note 10 - Senior Secured Line of Credit (Details Textual) - USD ($)
6 Months Ended
Jan. 28, 2025
Jul. 31, 2022
Sep. 30, 2025
Sep. 30, 2024
Nov. 01, 2024
Sep. 08, 2023
Jul. 31, 2023
Jun. 02, 2021
Revolving Credit Facility [Member]                
Line of Credit Facility, Maximum Borrowing Capacity               $ 7,000,000
Debt Instrument, Interest Rate, Stated Percentage   2.50%            
Line of Credit Facility, Interest Rate at Period End 10.00%   10.00%          
Debt Instrument, Covenant, Deposits Held $ 5,000,000         $ 5,000,000 $ 8,000,000  
Interest Expense, Debt     $ 200,000 $ 800,000        
Revolving Credit Facility [Member] | Minimum [Member]                
Line of Credit Facility, Interest Rate at Period End 7.50%              
Revolving Credit Facility [Member] | Prime Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate   2.50%            
Revolving Credit Facility [Member] | Wall Street Journal Money Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate 2.50%              
Promissory Note [Member]                
Debt Instrument, Face Amount         $ 6,000,000     $ 7,000,000
Long-Term Debt, Gross $ 3,750,000              
Proceeds from (Repayments of) Notes Payable (3,250,000)              
Debt Instrument, Periodic Payment 400,000              
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid $ 151,291.67