Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Major Customer Concentration (Details Textual)

v3.20.2
Note 7 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Sep. 30, 2019
Revenue Benchmark [Member] | Customer A [Member]          
Concentration Risk, Percentage 20.00% 19.00% 20.00% 18.00%  
Revenue Benchmark [Member] | Customer B [Member]          
Concentration Risk, Percentage 11.00% 12.00% 11.00% 10.00%  
Revenue Benchmark [Member] | Customer C [Member]          
Concentration Risk, Percentage       11.00%  
Accounts Receivable [Member]          
Number of Major Customers     2   2
Accounts Receivable [Member] | Customer One [Member]          
Concentration Risk, Percentage     17.00%   16.00%
Accounts Receivable [Member] | Customer Two [Member]          
Concentration Risk, Percentage     11.00%   12.00%
Accounts Receivable [Member] | Two Customers [Member]          
Concentration Risk, Percentage     28.00%   28.00%