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Note F - Acquisition - Summary of Estimated Fair Values of Acquired Assets (Details) - USD ($) | Sep. 30, 2019 | Sep. 30, 2018 | Feb. 20, 2018
--- | --- | --- | ---
Goodwill | $ 4,708,511 | $ 4,708,511 |
Calix, Inc. [Member] |  |  |
Inventories |  |  | $ 2,781,000
Property, plant and equipment |  |  | 58,000
Goodwill |  |  | 2,138,000
Total Assets |  |  | 10,350,000
Calix, Inc. [Member] | Trademarks [Member] |  |  |
Finite-lived intangible assets |  |  | 563,000
Calix, Inc. [Member] | Customer Relationships [Member] |  |  |
Finite-lived intangible assets |  |  | 3,742,000
Calix, Inc. [Member] | Certification Marks [Member] |  |  |
Finite-lived intangible assets |  |  | $ 1,068,000

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