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Note 3 - Revenue Recognition | 3 Months Ended
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Mar. 31, 2024
Notes to Financial Statements |
Revenue from Contract with Customer [Text Block] | Note 3. Revenue Recognition ​ ​ Disaggregation of Revenue ​ Revenue is classified based on the location where the product is manufactured. For additional information on the disaggregated revenues by geographical region, see Note 17, "Geographic Information." Revenue is also classified by major product categories and is presented below (in thousands): ​
|  | Three months ended March 31, |
​ |  |  |  |  |  | % of |  |  |  |  |  |  | % of |
​ |  | 2024 |  |  | Revenue |  |  | 2023 |  |  | Revenue |
Data Center |  | $ | 28,986 |  |  |  | 71.2 | % |  | $ | 20,353 |  |  |  | 38.4 | %
CATV |  |  | 8,736 |  |  |  | 21.5 | % |  |  | 27,779 |  |  |  | 52.4 | %
Telecom |  |  | 2,269 |  |  |  | 5.6 | % |  |  | 3,707 |  |  |  | 7.0 | %
FTTH |  |  | — |  |  |  | 0.0 | % |  |  | 2 |  |  |  | 0.0 | %
Other |  |  | 682 |  |  |  | 1.7 | % |  |  | 1,189 |  |  |  | 2.2 | %
Total Revenue |  | $ | 40,673 |  |  |  | 100.0 | % |  | $ | 53,030 |  |  |  | 100.0 | %
​ Unearned Revenue ​ We record unearned revenues when cash payments are received or due in advance of our performance, including amounts which are refundable. Unearned revenues solely relate to statement of work with Microsoft regarding contract prices allocated to the performance obligations that are unsatisfied, or partially unsatisfied, as of the balance sheet dates. Unearned revenue balance as of March 31, 2024 and December 31, 2023 was $1.7 million and $1.8 million, respectively. For the three months ended March 31, 2024 and 2023, revenue recognized from the unearned revenue balance was $114 thousand and $237 thousand, respectively.
|  | Three months ended March 31, |
|  | 2024 |  |  | 2023 |
Unearned Revenue, beginning of period |  | $ | 1,803 |  |  | $ | 3,000 |
Additional Unearned Revenue |  |  | — |  |  |  | — |
Revenue recognized |  |  | 114 |  |  |  | 237 |
Unearned Revenue, end of period |  | $ | 1,689 |  |  | $ | 2,763 |

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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