Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in carrying amounts of goodwill by segment

The following table reflects the changes in carrying amounts of goodwill by segment for the nine months ended September 30, 2020:

(In thousands)	Harsco Environmental Segment		Harsco Clean Earth Segment		Harsco Rail Segment		Consolidated Totals
Balance at December 31, 2019	$	395,113	$	330,230	$	13,026	$	738,369
Changes to goodwill (a)	1,480		144,283		—		145,763
Foreign currency translation	(2,221)		—		—		(2,221)
Balance at September 30, 2020	$	394,372	$	474,513	$	13,026	$	881,911

(a) The changes to goodwill primarily relate to the acquisition of ESOL in the Harsco Clean Earth Segment. See Note 3, Acquisitions and Dispositions, and immaterial acquisitions in the Harsco Environmental Segment.

Schedule of intangible assets by class

Intangible assets, net, on the Company's Condensed Consolidated Balance Sheets consist of the following:

	September 30, 2020				December 31, 2019
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer related (b)	$	106,247	$	43,572	$	143,996	$	99,327
Permits	308,559		14,992		170,322		4,694
Technology related	37,992		8,187		36,467		5,635
Trade names	31,698		4,133		31,719		2,182
Air rights	26,139		827		26,139		411
Patents	177		126		249		168
Non-compete Agreement	2,500		312		—		—
Other	3,747		1,228		3,765		1,158
Total	$	517,059	$	73,377	$	412,657	$	113,575

(b)     In the quarter ended September 30, 2020 fully amortized intangible assets were removed from the gross carrying and accumulated amortization amounts.

Schedule of amortization expense

Amortization expense for intangible assets was as follows:

	Three Months Ended				Nine Months Ended
	September 30				September 30
(In thousands)	2020		2019		2020		2019
Amortization expense for intangible assets	$	8,272	$	5,668	$	22,542	$	9,508

Schedule of estimated amortization expense

The estimated amortization expense for the next five fiscal years based on current intangible assets is as follows:

(In thousands)	2020		2021		2022		2023		2024
Estimated amortization expense (c)	$	31,200	$	32,300	$	31,600	$	31,600	$	31,100

(c)     These estimated amortization expense amounts do not reflect the potential effect of future foreign currency exchange fluctuations