Annual report pursuant to Section 13 and 15(d)

Inventories (Tables)

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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory A summary of the Company’s inventories is shown below (in thousands):
December 31,
2021 2020
Supplies $ 4,557  $ 6,312 
Raw materials 701  613 
Work in process 2,435  3,478 
Finished goods 673  1,617 
Total inventory $ 8,366  $ 12,020