Intangibles (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Change in the Carrying Amount of Goodwill by Segment

The change in the carrying amount of goodwill by segment for the six months ended June 30, 2018 is as follows:

In thousands	Freight Segment			Transit Segment			Total
Balance at December 31, 2017	$	718,958		$	1,741,145		$	2,460,103
Additions	2,998			13,075			16,073
Foreign currency impact	(1,279		)	(46,306		)	(47,585		)
Balance at June 30, 2018	$	720,677		$	1,707,914		$	2,428,591

Intangible Assets of the Company, Other Than Goodwill and Trade Names

Intangible assets of the Company, other than goodwill and trade names, consist of the following:

In thousands	June 30, 2018		December 31, 2017
Patents, non-compete and other intangibles, net of accumulated
amortization of $42,395 and $43,021	$	16,459	$	17,554
Customer relationships, net of accumulated amortization
of $142,623 and $126,824	555,149		583,459
Total	$	571,608	$	601,013

Amortization Expense

Amortization expense for the five succeeding years is estimated to be as follows:

Remainder of 2018	$	20,718
2019	38,709
2020	36,459
2021	35,825
2022	35,537