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Note 19 - Major Customers, Suppliers and Related Information (Details Textual) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Product sales | $ 4,361 | $ 10,487
UNITED STATES |  |
Product sales | $ 3,624 | $ 8,938
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |
Number Of Major Customers | 2 | 1
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |  |
Concentration Risk, Percentage | 14.00% | 60.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer 2 [Member] |  |
Concentration Risk, Percentage | 13.00% |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer 3 [Member] |  |
Concentration Risk, Percentage | 10.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |
Number Of Major Customers | 3 | 2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |  |
Concentration Risk, Percentage | 35.00% | 41.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer 2 [Member] |  |
Concentration Risk, Percentage | 11.00% | 18.00%

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