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INVENTORIES
 3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories consisted of the following:
 March 31, 2021December 31, 2020
 (thousands of dollars)
Raw material$1,592 $2,580 
Work in process171 138 
Finished products9,976 10,227 
Total inventories$11,739 $12,945 
Inventory serves as collateral for our amended and restated credit agreement. See Note 11.
Inventory included Specialty Petrochemicals products in transit valued at approximately $2.5 million and $3.6 million at March 31, 2021 and December 31, 2020, respectively.