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Inventories, Net
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories, Net
10. Inventories, Net:
Inventories, net are classified and valued as follows:
June 30,
2021
December 31,
2020
Finished products and work in process$41,982 $48,500 
Raw materials5,970 4,289 
$47,952 $52,789 
Valued at lower of cost or market:
LIFO basis$32,404 $31,072 
Valued at lower of cost and net realizable value:
FIFO or average cost basis15,548 21,717 
$47,952 $52,789