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Note C - Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | December 31, 2023 |  |  | December 31, 2022 |
Unearned Revenue, beginning of period |  | $ | 3,000 |  |  | $ | — |
Additional Unearned Revenue |  |  | 12,608 |  |  |  | 3,000 |
Revenue recognized |  |  | 13,805 |  |  |  | — |
Unearned Revenue, end of period |  | $ | 1,803 |  |  | $ | 3,000 |
Disaggregation of Revenue [Table Text Block] |
|  | Years ended December 31, |
|  |  |  |  |  | % of |  |  |  |  |  |  | % of |  |  |  |  |  |  | % of |
|  | 2023 |  |  | Revenue |  |  | 2022 |  |  | Revenue |  |  | 2021 |  |  | Revenue |
CATV |  | $ | 59,942 |  |  |  | 27.5 | % |  | $ | 118,169 |  |  |  | 53.0 | % |  | $ | 94,266 |  |  |  | 44.6 | %
Data Center |  |  | 141,213 |  |  |  | 64.9 | % |  |  | 77,094 |  |  |  | 34.6 | % |  |  | 97,461 |  |  |  | 46.1 | %
Telecom |  |  | 13,831 |  |  |  | 6.4 | % |  |  | 24,727 |  |  |  | 11.1 | % |  |  | 16,247 |  |  |  | 7.7 | %
FTTH |  |  | 56 |  |  |  | 0.0 | % |  |  | 129 |  |  |  | 0.1 | % |  |  | 957 |  |  |  | 0.5 | %
Other |  |  | 2,604 |  |  |  | 1.2 | % |  |  | 2,699 |  |  |  | 1.2 | % |  |  | 2,634 |  |  |  | 1.2 | %
Total Revenue |  | $ | 217,646 |  |  |  | 100.0 | % |  | $ | 222,818 |  |  |  | 100.0 | % |  | $ | 211,565 |  |  |  | 100.0 | %

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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