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Note 5 - Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 30,

  

December 31,

 
  

2021

  

2020

 

Raw materials

 $14,892  $14,852 

Work-in-process

  11,818   12,811 

Finished goods

  33,876   33,347 

Total

 $60,586  $61,010 
         

Inventories

 $42,857  $46,209 

Other long-term assets

  17,729   14,801