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INVENTORIES (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consisted of the following:
 June 30, 2021December 31, 2020
 (thousands of dollars)
Raw material$2,713 $2,580 
Work in process181 138 
Finished products12,746 10,227 
Total inventories$15,640 $12,945