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Note 3 - Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2023
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three months ended March 31, |
​ |  |  |  |  |  | % of |  |  |  |  |  |  | % of |
​ |  | 2023 |  |  | Revenue |  |  | 2022 |  |  | Revenue |
CATV |  | $ | 27,779 |  |  |  | 52.4 | % |  | $ | 24,980 |  |  |  | 47.8 | %
Data Center |  |  | 20,353 |  |  |  | 38.4 | % |  |  | 21,415 |  |  |  | 41.0 | %
Telecom |  |  | 3,707 |  |  |  | 7.0 | % |  |  | 5,265 |  |  |  | 10.1 | %
FTTH |  |  | 2 |  |  |  | 0.0 | % |  |  | 98 |  |  |  | 0.2 | %
Other |  |  | 1,189 |  |  |  | 2.2 | % |  |  | 484 |  |  |  | 0.9 | %
Total Revenue |  | $ | 53,030 |  |  |  | 100.0 | % |  | $ | 52,242 |  |  |  | 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 -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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