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Inventory (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventories Inventory consisted of the following:
 September 30, 2021December 31, 2020
Raw material$176 $428 
Work in progress5,789 10,465 
Finished goods5,475 4,400 
Spare parts3,941 3,843 
Total inventory$15,381 $19,136