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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories, net are classified and valued as follows:
December 31,
20212020
Finished products and work in process$46,894 $48,500 
Raw materials6,919 4,289 
$53,813 $52,789 
Valued at lower of cost or market:
LIFO basis$33,330 $31,072 
Valued at lower of cost and net realizable value:
FIFO or average cost basis20,483 21,717 
$53,813 $52,789