CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues from continuing operations:
Product revenues	$ 2,069,225	$ 1,889,065	$ 1,848,399
Costs and expenses from continuing operations:
Cost of sales	1,633,662	1,553,335	1,490,556
Selling, general and administrative costs	312,383	268,066	272,233
Research and development expenses	1,286	690	956
Goodwill and other intangible asset impairment charges	0	119,580	0
Property, plant and equipment impairment charge	14,099	0	0
Other expenses	(3,219)	4,737	(3,722)
Total costs and expenses	1,958,211	1,946,408	1,760,023
Operating income (loss) from continuing operations	111,014	(57,343)	88,376
Interest income	6,670	3,559	2,231
Interest expense	(103,872)	(75,156)	(63,235)
Facility fees and debt-related income (expense)	(10,762)	(2,956)	(5,506)
Defined benefit pension income (expense)	(21,600)	8,938	15,640
Income (loss) from continuing operations before income taxes and equity income	(18,550)	(122,958)	37,506
Income tax expense	(28,185)	(10,381)	(9,089)
Equity income (loss) of unconsolidated entities, net	(761)	(178)	(302)
Income (loss) from continuing operations	(47,496)	(133,517)	28,115
Discontinued operations:
Income (loss) from discontinued businesses	(39,252)	(50,301)	(25,863)
Income tax benefit (expense) from discontinued businesses	(1,350)	7,387	477
Income (loss) from discontinued operations, net of tax	(40,602)	(42,914)	(25,386)
Net income (loss)	(88,098)	(176,431)	2,729
Less: Net income attributable to noncontrolling interests	1,977	(3,638)	(5,978)
Net income (loss) attributable to Enviri Corporation	(86,121)	(180,069)	(3,249)
Amounts attributable to Harsco Corporation common stockholders:
Income (loss) from continuing operations, net of tax	(45,519)	(137,155)	22,137
Income (loss) from discontinued operations, net of tax	(40,602)	(42,914)	(25,386)
Net income (loss) attributable to Enviri Corporation common stockholders	$ (86,121)	$ (180,069)	$ (3,249)
Weighted average shares of common stock outstanding	79,796	79,493	79,234
Basic earnings (loss) per share attributable to Enviri Corporation common stockholders:
Continuing operations (in dollars per share)	$ (0.57)	$ (1.73)	$ 0.28
Discontinued operations (in dollars per share)	(0.51)	(0.54)	(0.32)
Basic earnings (loss) per share attributable to Harsco Corporation common stockholders (in dollars per share)	$ (1.08)	$ (2.27)	$ (0.04)
Diluted weighted average shares of stock outstanding	79,796	79,493	80,289
Diluted earnings (loss) per share attributable to Enviri Corporation common stockholders:
Continuing operations (in dollars per share)	$ (0.57)	$ (1.73)	$ 0.28
Discontinued operations (in dollars per share)	(0.51)	(0.54)	(0.32)
Diluted earnings (loss) per share attributable to Harsco Corporation common stockholders (in dollars per share)	$ (1.08)	$ (2.27)	$ (0.04)