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Note 3 - Revenue Recognition
 3 Months Ended
Mar. 31, 2024
Notes to Financial Statements  
Revenue from Contract with Customer [Text Block]

Note 3.  Revenue Recognition

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Disaggregation of Revenue

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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):

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Three months ended March 31,

 

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% of

      

% of

 

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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%

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Unearned Revenue

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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