Note 11 - Concentration of Credit Risk and Major Customers and Suppliers (Details Textual) - Customer Concentration Risk [Member] |
12 Months Ended |
---|---|
Sep. 30, 2021 | |
Revenue from Contract with Customer Benchmark [Member] | |
Number of Major Customers | 4 |
Revenue from Contract with Customer Benchmark [Member] | Customer 1 [Member] | |
Concentration Risk, Percentage | 21.00% |
Revenue from Contract with Customer Benchmark [Member] | Customer 2 [Member] | |
Concentration Risk, Percentage | 12.00% |
Revenue from Contract with Customer Benchmark [Member] | Customer 3 [Member] | |
Concentration Risk, Percentage | 12.00% |
Revenue from Contract with Customer Benchmark [Member] | Customer 4 [Member] | |
Concentration Risk, Percentage | 10.00% |
Accounts Receivable [Member] | |
Number of Major Customers | 2 |
Accounts Receivable [Member] | Customer 1 [Member] | |
Concentration Risk, Percentage | 79.00% |
Accounts Receivable [Member] | Customer 2 [Member] | |
Concentration Risk, Percentage | 11.00% |