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INVENTORIES
 3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories consisted of the following:
 March 31, 2022December 31, 2021
 (thousands of dollars)
Raw material$5,432 $2,348 
Work in process171 212 
Finished products14,752 18,574 
Total inventories$20,355 $21,134 
Inventory serves as collateral for our amended and restated credit agreement. See Note 10.
Inventory included Specialty Petrochemicals products in transit valued at approximately $6.4 million and $4.9 million at March 31, 2022 and December 31, 2021, respectively.