Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

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 three months ended March 31, 2017:



(In thousands)	Harsco Metals & Minerals Segment		Harsco Industrial Segment		Harsco Rail Segment		Consolidated Totals
Balance at December 31, 2016	$	362,386	$	6,839	$	13,026	$	382,251
Foreign currency translation	2,561		—		—		2,561
Balance at March 31, 2017	$	364,947	$	6,839	$	13,026	$	384,812

Schedule of intangible assets by class

Intangible assets included in the captions, Other current assets and Intangible assets, net, on the Condensed Consolidated Balance Sheets consist of the following:



	March 31, 2017				December 31, 2016
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer related	$	147,784	$	114,386	$	146,840	$	112,610
Patents	5,750		5,606		5,729		5,534
Technology related	25,739		25,711		25,687		25,634
Trade names	8,308		4,607		8,306		4,529
Other	8,546		5,348		8,512		5,200
Total	$	196,127	$	155,658	$	195,074	$	153,507

Schedule of amortization expense

Amortization expense for intangible assets was as follows:



	Three Months Ended
	March 31
(In thousands)	2017		2016
Amortization expense for intangible assets	$	1,318	$	2,105

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)	2017		2018		2019		2020		2021
Estimated amortization expense (a)	$	5,000	$	4,750	$	4,500	$	4,250	$	4,000

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