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Note C - Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Years ended December 31, |
|  |  |  |  |  | % of |  |  |  |  |  |  | % of |  |  |  |  |  |  | % of |
|  | 2021 |  |  | Revenue |  |  | 2020 |  |  | Revenue |  |  | 2019 |  |  | Revenue |
Data Center |  | $ | 97,461 |  |  |  | 46.1 | % |  | $ | 173,437 |  |  |  | 73.9 | % |  | $ | 143,562 |  |  |  | 75.2 | %
CATV |  |  | 94,266 |  |  |  | 44.6 | % |  |  | 37,944 |  |  |  | 16.2 | % |  |  | 37,328 |  |  |  | 19.6 | %
Telecom |  |  | 16,247 |  |  |  | 7.7 | % |  |  | 21,092 |  |  |  | 9.0 | % |  |  | 8,429 |  |  |  | 4.4 | %
FTTH |  |  | 957 |  |  |  | 0.5 | % |  |  | 110 |  |  |  | 0.0 | % |  |  | 190 |  |  |  | 0.1 | %
Other |  |  | 2,634 |  |  |  | 1.2 | % |  |  | 2,040 |  |  |  | 0.9 | % |  |  | 1,363 |  |  |  | 0.7 | %
Total Revenue |  | $ | 211,565 |  |  |  | 100.0 | % |  | $ | 234,623 |  |  |  | 100.0 | % |  | $ | 190,872 |  |  |  | 100.0 | %

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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