Other Expenses (Tables)

12 Months Ended

Dec. 31, 2020

Other Income and Expenses [Abstract]

Schedule of other expenses (income)

The major components of this Consolidated Statements of Operations caption are as follows:

(In thousands)	2020		2019		2018
Net gains
Harsco Environmental Segment	$	(3,723)	$	(6,303)	$	(2,650)
Corporate	—		—		(1,218)

(In thousands)	2020		2019		2018
Total net gains	(3,723)		(6,303)		(3,868)
Employee termination benefit costs
Harsco Environmental Segment	9,389		1,254		2,853
Clean Earth Segment	833		1,960		—
Harsco Rail Segment	639		2,393		704
Corporate	27		1,012		1,206
Total employee termination benefit costs	10,888		6,619		4,763
Other costs to exit activities
Harsco Environmental Segment	504		970		352
Harsco Rail Segment	160		3,042		—
Corporate	29		196		(182)
Total other costs to exit activities	693		4,208		170
Impaired asset write-downs
Harsco Environmental Segment	776		632		104
Harsco Rail Segment	—		141		—
Total impaired asset write-downs	776		773		104
Contingent consideration adjustments
Harsco Environmental Segment	—		(8,506)		(2,939)
Harsco Clean Earth Segment	112		825		—
Corporate	2,274		—		—
Total contingent consideration adjustments	2,386		(7,681)		(2,939)
Other income	(226)		(237)		(431)
Total other (income) expenses, net	$	10,794	$	(2,621)	$	(2,201)