Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v3.22.2.2
Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Supplies $ 4,872 $ 4,557
Raw materials 838 701
Work in process 2,135 2,435
Finished goods 486 673
Total inventories $ 8,331 $ 8,366