Review of Operations by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operations by segment
Revenues	$ 495,653	$ 452,797
Operating income from continuing operations	29,005	7,748
Interest income	1,455	644
Interest expense	(24,328)	(15,092)
Facility fees and debt-related income (expense)	(2,363)	(532)
Defined benefit pension income (expense)	(5,335)	2,410
Income (loss) from continuing operations before income taxes and equity income	(1,566)	(4,822)
Depreciation	33,039	33,604
Depreciation Excluding Industrial Segment		33,604
Amortization	7,965	8,586
Amortization, Excluding Discontinued Operations		8,586
Capital Expenditures	21,481	32,452
Operating Segments
Operations by segment
Operating income from continuing operations	38,756	16,970
Operating Segments | Harsco Environmental Segment
Operations by segment
Revenues	273,189	262,051
Operating income from continuing operations	22,285	18,267
Depreciation	27,560	28,072
Amortization	999	1,828
Capital Expenditures	16,551	24,790
Operating Segments | Harsco Clean Earth Segment
Operations by segment
Revenues	222,464	190,746
Operating income from continuing operations	16,471	(1,297)
Depreciation	4,927	5,101
Amortization	6,029	6,075
Capital Expenditures	4,830	6,696
Corporate
Operations by segment
Operating income from continuing operations	(9,751)	(9,222)
Depreciation	552	431
Amortization	937	683
Capital Expenditures	$ 100	$ 966