CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (88,098)	$ (176,431)	$ 2,729
Other comprehensive income (loss):
Foreign currency translation adjustments, net of deferred income taxes of $3,162, $(6,752) and $(23) in 2023, 2022 and 2021, respectively	28,988	(82,325)	(10,994)
Net gain (loss) on cash flow hedging instruments, net of deferred income taxes of $138, $(1,284) and $(797) in 2023, 2022 and 2021, respectively	(627)	3,181	2,816
Pension liability adjustments, net of deferred income taxes of $(2,693), $(2,590) and $(5,409) in 2023, 2022 and 2021, respectively	(1,041)	67,549	92,252
Unrealized gain (loss) on marketable securities, net of deferred income taxes of $(2), $4 and $(12) in 2023, 2022 and 2021, respectively	5	(12)	31
Other Comprehensive Income (Loss), Net of Tax, Total	27,325	(11,607)	84,105
Total comprehensive income (loss)	(60,773)	(188,038)	86,834
Less: Comprehensive (income) loss attributable to noncontrolling interests	2,594	472	(4,480)
Comprehensive income (loss) attributable to Enviri Corporation	$ (58,179)	$ (187,566)	$ 82,354