v3.26.1
Income Taxes - New Enviri (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Income Tax Contingency [Line Items]      
Income tax expense (benefit) $ (24,387) $ 2,001  
Unrecognized tax benefits 6,000   $ 6,700
Unrecognized income tax benefit that will be recognized within the next twelve months 2,000    
New Enviri      
Income Tax Contingency [Line Items]      
Income tax expense (benefit) 5,436 $ 3,342  
Unrecognized tax benefits 2,400   $ 3,100
Unrecognized income tax benefit that will be recognized within the next twelve months $ 400