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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2021
Summary of Significant Accounting Policies [Abstract]  
Inventories
Inventories consist of the following (U.S. dollars in thousands):

 
March 31,
2021
   
December 31,
2020
 
Raw materials
 
$
143,998
   
$
118,877
 
Finished goods
   
219,433
     
195,489
 
Total Inventory, net
 
$
363,431
   
$
314,366