Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Revenue - Disaggregation of Revenue (Details)

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Note 5 - Revenue - Disaggregation of Revenue (Details) - USD ($)
3 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Total Net Sales $ 27,092,147 $ 19,377,991
Percent of net sales 100.00% 100.00%
Broadband Service Providers [Member]    
Percent of net sales 98.00% 94.00%
Legacy Customers [Member]    
Percent of net sales 2.00% 6.00%
UNITED STATES    
Total Net Sales $ 26,032,202 $ 18,240,788
Non-US [Member]    
Total Net Sales $ 1,059,945 $ 1,137,203