Quarterly report [Sections 13 or 15(d)]

Note 8 - Revenue - Disaggregation of Revenue (Details)

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Note 8 - Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Total Net Sales $ 49,903 $ 48,793 $ 132,547 $ 119,933
Total Net Sales, percentage 100.00% 100.00% 100.00% 100.00%
Broadband Service Providers [Member]        
Total Net Sales, percentage 95.00% 94.00% 94.00% 94.00%
Legacy Customers [Member]        
Total Net Sales, percentage 5.00% 6.00% 6.00% 6.00%
UNITED STATES        
Total Net Sales $ 37,413 $ 32,300 $ 106,590 $ 86,823
Non-US [Member]        
Total Net Sales $ 12,490 $ 16,493 $ 25,957 $ 33,110