Note 5 - Revenue - Disaggregation of Revenue (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Total Net Sales | $ 19,377,991 | $ 20,089,150 |
| Percent of net sales | 100.00% | 100.00% |
| Broadband Service Providers [Member] | ||
| Percent of net sales | 94.00% | 94.00% |
| Build-to-print Customers [Member] | ||
| Percent of net sales | 6.00% | 6.00% |
| UNITED STATES | ||
| Total Net Sales | $ 18,240,788 | $ 18,504,467 |
| Non-US [Member] | ||
| Total Net Sales | $ 1,137,203 | $ 1,584,683 |
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- Definition Represents the percentage of revenues. No definition available.
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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