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Note 17 - Geographic Information (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Revenue from External Customers by Geographic Areas [Table Text Block]
  

Three months ended June 30,

  

Six months ended June 30,

 

 

2021

  

2020

  

2021

  

2020

 

Revenues:

 

  

  

  

 

United States

 $3,422  $4,735  $6,737  $8,496 

Taiwan

  29,493   40,604   55,888   64,486 

China

  21,274   19,883   41,265   32,707 

 $54,189  $65,222  $103,890  $105,689 
Long-lived Assets by Geographic Areas [Table Text Block]
  

As of the period ended

 

 

June 30,

  

December 31,

 

 

2021

  

2020

 

Long-lived assets:

 

  

 

United States

 $89,096  $90,999 

Taiwan

  67,305   71,080 

China

  107,706   108,575 

 $264,107  $270,654