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Note 3 - Revenue Recognition (Tables) | 9 Months Ended
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Sep. 30, 2024
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three months ended September 30, |
​ |  |  |  |  |  | % of |  |  |  |  |  |  | % of |
​ |  | 2024 |  |  | Revenue |  |  | 2023 |  |  | Revenue |
Data Center |  | $ | 40,945 |  |  |  | 62.8 | % |  | $ | 48,807 |  |  |  | 78.0 | %
CATV |  |  | 20,947 |  |  |  | 32.2 | % |  |  | 10,268 |  |  |  | 16.4 | %
Telecom |  |  | 2,798 |  |  |  | 4.3 | % |  |  | 3,074 |  |  |  | 5.0 | %
FTTH |  |  | — |  |  |  | 0.0 | % |  |  | — |  |  |  | 0.0 | %
Other |  |  | 461 |  |  |  | 0.7 | % |  |  | 398 |  |  |  | 0.6 | %
Total Revenue |  | $ | 65,151 |  |  |  | 100.0 | % |  | $ | 62,547 |  |  |  | 100.0 | %
|  | Nine months ended September 30, |
​ |  |  |  |  |  | % of |  |  |  |  |  |  | % of |
​ |  | 2024 |  |  | Revenue |  |  | 2023 |  |  | Revenue |
Data Center |  | $ | 104,283 |  |  |  | 69.9 | % |  | $ | 96,731 |  |  |  | 61.5 | %
CATV |  |  | 35,501 |  |  |  | 23.8 | % |  |  | 47,391 |  |  |  | 30.1 | %
Telecom |  |  | 7,445 |  |  |  | 5.0 | % |  |  | 11,013 |  |  |  | 7.0 | %
FTTH |  |  | — |  |  |  | 0.0 | % |  |  | 57 |  |  |  | 0.1 | %
Other |  |  | 1,865 |  |  |  | 1.3 | % |  |  | 2,001 |  |  |  | 1.3 | %
Total Revenue |  | $ | 149,094 |  |  |  | 100.0 | % |  | $ | 157,193 |  |  |  | 100.0 | %
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Unearned revenue, beginning of period |  | $ | 1,570 |  |  | $ | 11,720 |  |  | $ | 1,803 |  |  | $ | 3,000 |
Additional unearned revenue |  |  | — |  |  |  | 2,724 |  |  |  | — |  |  |  | 12,608 |
Revenue recognized |  |  | 131 |  |  |  | 1,947 |  |  |  | 364 |  |  |  | 3,111 |
Unearned revenue, end of period |  | $ | 1,439 |  |  | $ | 12,497 |  |  | $ | 1,439 |  |  | $ | 12,497 |

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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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