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Note 16 - Segment and Geographic Information (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
  

Year Ended December 31,

 

Country or Region

 

2021

  

2020

  

2019

 

China

 $700,985  $516,519  $382,740 

Taiwan

  169,130   109,256   73,801 

Europe

  85,201   56,329   49,467 

South Korea

  93,027   64,093   43,900 

Southeast Asia

  54,611   42,403   32,031 

Japan

  68,720   35,461   27,812 

United States

  35,770   20,098   17,836 

Other

  354   293   334 

Total

 $1,207,798  $844,452  $627,921 
Revenue from External Customers by Products and Services [Table Text Block]
  

Year Ended December 31,

 

Product Family

 

2021

  

2020

  

2019

 

DC to DC

 $1,147,329  $800,478  $589,651 

Lighting Control

  60,469   43,974   38,270 

Total

 $1,207,798  $844,452  $627,921 
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]
  

December 31,

 

Country

 

2021

  

2020

  

2019

 

China

 $211,973  $151,752  $113,888 

United States

  113,805   101,768   94,671 

Taiwan

  19,607   18,797   17,652 

Other

  17,577   9,211   2,104 

Total

 $362,962  $281,528  $228,315