v3.25.1
Goodwill and Other Intangibles - Changes in Goodwill (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Goodwill [Roll Forward]    
Balance at beginning of period $ 1,582,714  
Foreign currency translation adjustments 23,430  
Balance at end of period 1,606,144  
Ketjen    
Goodwill [Roll Forward]    
Accumulated impairment loss 6,800 $ 6,800
Reportable Segments | Energy Storage    
Goodwill [Roll Forward]    
Balance at beginning of period 1,387,591  
Foreign currency translation adjustments 18,372  
Balance at end of period 1,405,963  
Reportable Segments | Specialties    
Goodwill [Roll Forward]    
Balance at beginning of period 32,577  
Foreign currency translation adjustments 10  
Balance at end of period 32,587  
Reportable Segments | Ketjen    
Goodwill [Roll Forward]    
Balance at beginning of period 162,546  
Foreign currency translation adjustments 5,048  
Balance at end of period $ 167,594