Goodwill and Other Intangible Assets- Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 13,026
Goodwill	739,758	$ 780,978	$ 772,279
Impaired asset write-downs	5,259	88	736
Clean Earth
Goodwill [Line Items]
Goodwill, Impairment Loss	0
Goodwill	379,299	379,299	379,299
Impaired asset write-downs	567	0	59
Harsco Environmental
Goodwill [Line Items]
Goodwill, Impairment Loss	0
Goodwill	360,459	388,653	379,954
Impaired asset write-downs	$ 2,771	$ 88	582
Altek Group
Goodwill [Line Items]
Impaired asset write-downs			15,000
Intangible Assets, Net (Excluding Goodwill)			$ 15,300