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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of inventories
Inventories consist of the following:
March 31, December 31,
20212020
Raw materials$3,089 $3,515 
Work in process — 2,589 
Finished products3,773 1,971 
$6,862 $8,075