Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Foreign earnings before tax	$ 29,644	$ 71,968	$ 33,095
Differences on international earnings and remittances	10,300	4,500
Income Tax Expense (Benefit)	10,381	9,089	(8,673)
Total international income tax expense	14,914	22,295	16,518
Operating loss carryforwards	54,237	67,442
Valuation Allowance	89,234	92,385
Interest and penalties recognized	400	400	200
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,300	1,700	$ 1,400
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	1,100
Current Foreign Tax Expense (Benefit)	17,400	13,200
Clean Earth
Income Tax Disclosure [Line Items]
Income Tax Expense (Benefit)	3,000
Altek Group
Income Tax Disclosure [Line Items]
Income Tax Expense (Benefit)	0
International operations
Income Tax Disclosure [Line Items]
Operating loss carryforwards	40,600
Operating loss carryforwards not subject to expiration	35,500
Operating losses subject to expiration	5,100
U.S. state
Income Tax Disclosure [Line Items]
Operating loss carryforwards	12,100
United States
Income Tax Disclosure [Line Items]
Differences on international earnings and remittances	100	$ 100
Brazil | Harsco Environmental
Income Tax Disclosure [Line Items]
Income Tax Expense (Benefit)	$ 6,800