Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Major Customer Concentration (Details Textual)

v3.22.1
Note 9 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Sep. 30, 2021
Revenue Benchmark [Member] | Customer A [Member]          
Concentration Risk, Percentage 14.00% 21.00% 13.00% 20.00%  
Revenue Benchmark [Member] | Customer B [Member]          
Concentration Risk, Percentage 13.00%   12.00%    
Revenue Benchmark [Member] | Customer C [Member]          
Concentration Risk, Percentage     11.00%    
Revenue Benchmark [Member] | Customer D [Member]          
Concentration Risk, Percentage   11.00%   11.00%  
Accounts Receivable [Member] | Customer C [Member]          
Concentration Risk, Percentage         17.00%
Accounts Receivable [Member] | Customer D [Member]          
Concentration Risk, Percentage     11.00%