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Note 17 - Geographic Information (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Revenue from External Customers by Geographic Areas [Table Text Block]
  

Three months ended June 30,

  

Six months ended June 30,

 

 

2020

  

2019

  

2020

  

2019

 

Revenues:

 

  

  

  

 

United States

 $4,735  $1,652  $8,496  $3,650 

Taiwan

  40,604   22,108   64,486   46,128 

China

  19,883   19,651   32,707   46,352 

 $65,222  $43,411  $105,689  $96,130 
Long-lived Assets by Geographic Areas [Table Text Block]
  

As of the period ended

 

 

June 30,

  

December 31,

 

 

2020

  

2019

 

Long-lived assets:

 

  

 

United States

 $93,604  $94,507 

Taiwan

  72,420   73,816 

China

  95,219   97,687 

 $261,243  $266,010