Income Taxes (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Line Items]
Foreign earnings before tax	$ 71,968	$ 33,095	$ 70,034
Differences on international earnings and remittances	4,500	7,900
Income Tax Expense (Benefit)	9,089	(8,673)	12,728
Total international income tax expense	22,295	16,518	21,132
Operating loss carryforwards	65,935	66,703
Valuation Allowance	92,385	108,563
Interest and penalties recognized	400	200	300
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,700	1,400	$ 1,200
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	400
Current Foreign Tax Expense (Benefit)	13,200	16,600
International operations
Income Tax Disclosure [Line Items]
Operating loss carryforwards	40,900
Operating loss carryforwards not subject to expiration	32,000
Operating losses subject to expiration	8,900
U.S. state
Income Tax Disclosure [Line Items]
Operating loss carryforwards	16,000
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