Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Major Customer Concentration (Details Textual)

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Note 9 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2024
Mar. 31, 2023
Sep. 30, 2023
Revenue Benchmark [Member]          
Number of Major Customers 2 1 2 1  
Revenue Benchmark [Member] | One Customer [Member]          
Concentration Risk, Percentage 15.00% 17.00% 17.00% 16.00%  
Revenue Benchmark [Member] | Customer Two [Member]          
Concentration Risk, Percentage 11.00%   14.00%    
Accounts Receivable [Member]          
Number of Major Customers     3   3
Accounts Receivable [Member] | Customer Two [Member]          
Concentration Risk, Percentage     13.00%   13.00%
Accounts Receivable [Member] | Customer One [Member]          
Concentration Risk, Percentage     15.00%   16.00%
Accounts Receivable [Member] | Customer Three [Member]          
Concentration Risk, Percentage     10.00%   11.00%