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Goodwill - Additional Information (Detail) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Jul. 31, 2025
Goodwill [Line Items]          
Additional goodwill   $ 2,000,000      
Increase in fair vlue of net assets     $ (3,100,000)    
Goodwill   399,000,000 382,500,000 $ 399,300,000 $ 2,000,000
Fuel Specialties [Member]          
Goodwill [Line Items]          
Additional goodwill   0      
Increase in fair vlue of net assets     0    
Impairment of goodwill   0 0 0  
Goodwill   207,700,000 207,500,000 207,600,000  
Performance Chemicals [Member]          
Goodwill [Line Items]          
Additional goodwill   0      
Increase in fair vlue of net assets     (3,100,000)    
Impairment of goodwill   0 0 0  
Goodwill   144,500,000 130,100,000 146,900,000  
Oilfield Services [Member]          
Goodwill [Line Items]          
Additional goodwill   2,000,000      
Increase in fair vlue of net assets     0    
Impairment of goodwill   0 0 0  
Goodwill   $ 46,800,000 $ 44,900,000 44,800,000  
QGP Quimica Geral [Member]          
Goodwill [Line Items]          
Additional goodwill       $ 37,400,000  
Increase in fair vlue of net assets $ 3,100,000