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Inventories
 3 Months Ended
Mar. 31, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
The major components of inventories were as follows:
March 31, 2025December 31, 2024
Crude oil$21,324 $20,381 
NaHS9,787 10,902 
Caustic soda6,959 6,499 
Total$38,070 $37,782 
Inventories are valued at the lower of cost or net realizable value. There was no adjustment to the net realizable value of inventories as of March 31, 2025. As of December 31, 2024, the net realizable value of inventories was below cost by $0.4 million, which triggered a reduction of the value of inventory in our Unaudited Condensed Consolidated Financial Statements by this amount.