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Inventories
 3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
Inventories INVENTORIES
Components of inventories as of March 31, 2023 and December 31, 2022 are as follows:
 March 31, 2023December 31, 2022
 (in thousands)
Finished goods$71,590 $60,481 
Raw materials4,521 3,734 
Parts and supplies6,063 6,432 
Work in progress1,767 1,466 
Total inventories
$83,941 $72,113 
Finished goods inventories include newly manufactured clear brine fluids as well as used brines that are repurchased from certain customers for recycling