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Note R - Segment and Geographic Information (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Revenue from External Customers by Geographic Areas [Table Text Block]
  

Year ended December 31,

 
  

2023

  

2022

  

2021

 

Revenues:

            

United States

 $30,798  $7,423  $14,633 

Taiwan

  143,528   164,144   99,201 

China

  43,320   51,251   97,731 
  $217,646  $222,818  $211,565 
Long-Lived Assets by Geographic Areas [Table Text Block]
  

As of December 31,

 
  

2023

  

2022

  

2021

 

Long-lived assets:

            

United States

 $75,283  $80,048  $87,709 

Taiwan

  47,668   50,777   63,644 

China

  91,050   93,888   108,509 
  $214,001  $224,713  $259,862