v3.26.1
Reconciliation of Basic and Diluted Shares - Reconciliation of Basic and Diluted Shares (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Income (loss) from continuing operations attributable to Enviri Corporation common stockholders, net of tax $ (298,301) $ (45,726) $ (322,661) $ (52,300)
Weighted-average shares outstanding - basic (in shares) [1] 27,877 26,876 27,655 26,827
Dilutive effect of stock-based compensation (in shares) 0 0 0 0
Weighted-average shares outstanding - diluted (in shares) 27,877 26,876 27,655 26,827
Earnings (loss) from continuing operations per common share, attributable to Enviri Corporation common stockholders:        
Basic (in dollars per share) $ (10.70) $ (1.70) $ (11.67) $ (1.95)
Diluted (in dollars per share) $ (10.70) $ (1.70) $ (11.67) $ (1.95)
[1] Weighted-average shares outstanding and earnings per share amounts for periods prior to the completion of the Transactions have been retrospectively adjusted to reflect the impact of the Transactions on the Company's capital structure.