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Note 19 - Major Customers, Suppliers and Related Information (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($)
Revenue from Contract with Customer, Including Assessed Tax | $ 14,152 | $ 12,627 | $ 37,997 | $ 31,956
UNITED STATES |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 12,631 | $ 10,564 | $ 31,465 | $ 24,401
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |
Number Of Major Customers | 1 | 1 | 1 | 1
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member] |  |  |  |
Concentration Risk, Percentage | 77.00% | 62.00% | 70.00% | 54.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |  |
Number Of Major Customers |  |  | 2 | 2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 61.00% | 51.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 19.00% | 17.00%

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