Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Major Customer Concentration (Details Textual)

v3.20.1
Note 7 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Sep. 30, 2019
Revenue Benchmark [Member] | Customer A [Member]          
Concentration Risk, Percentage 21.00% 17.00% 20.00%    
Revenue Benchmark [Member] | Customer B [Member]          
Concentration Risk, Percentage   10.00% 11.00%    
Revenue Benchmark [Member] | Customer C [Member]          
Concentration Risk, Percentage     10.00%    
Revenue Benchmark [Member] | Customer One [Member]          
Concentration Risk, Percentage       18.00%  
Accounts Receivable [Member]          
Number of Major Customers     3   2
Accounts Receivable [Member] | Customer A [Member]          
Concentration Risk, Percentage     12.00%    
Accounts Receivable [Member] | Customer B [Member]          
Concentration Risk, Percentage     10.00%    
Accounts Receivable [Member] | Customer C [Member]          
Concentration Risk, Percentage     10.00%    
Accounts Receivable [Member] | Customer One [Member]          
Concentration Risk, Percentage         16.00%
Accounts Receivable [Member] | Customer Two [Member]          
Concentration Risk, Percentage       11.00% 12.00%
Accounts Receivable [Member] | Three Customers [Member]          
Concentration Risk, Percentage     32.00%    
Accounts Receivable [Member] | Two Customers [Member]          
Concentration Risk, Percentage         28.00%