XML 68 R53.htm IDEA: XBRL DOCUMENT v3.22.0.1
Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 4,794 $ 5,006
Work in progress 551 770
Finished goods 4,621 4,640
Consumable supplies 2,720 2,718
Inventories $ 12,686 $ 13,134