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Inventories
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories

Note 5. Inventories

Inventories consisted of the following:

 

  March 31, December 31,
  2021 2020
  U.S. $ in thousands
Finished goods $52,845  $61,297 
Work-in-process  3,739   3,163 
Raw materials  67,615   67,212 
 $124,199  $131,672