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INVENTORIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
INVENTORIES.    
Finished goods $ 56,583 $ 51,346
Spare parts 775 260
Reserve for inventory obsolescence (531) (599)
Advanced shipping costs 1,384 584
Inventories, net $ 58,211 $ 51,591