Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table presents the changes in goodwill balance by reportable segment for the period presented:

	Rail Technologies and Services		Infrastructure Solutions		Total
Balance as of December 31, 2020	$	14,743	$	5,597	$	20,340
Larken purchase price adjustment	—		(21)		(21)
Foreign currency translation impact	(172)		—		(172)
Balance as of September 30, 2021	$	14,571	$	5,576	$	20,147

Schedule of Intangible Assets

The components of the Company’s intangible assets were as follows for the periods presented:

	September 30, 2021
	Weighted Average Amortization Period In Years	Gross Carrying Value		Accumulated Amortization		Net Carrying Amount
Patents	10	$	385	$	(218)	$	167
Customer relationships	18	36,133		(17,610)		18,523
Trademarks and trade names	16	7,798		(4,557)		3,241
Technology	13	35,769		(25,250)		10,519
		$	80,085	$	(47,635)	$	32,450
	December 31, 2020
	Weighted Average Amortization Period In Years	Gross Carrying Value		Accumulated Amortization		Net Carrying Amount
Patents	10	$	383	$	(206)	$	177
Customer relationships	18	36,269		(15,914)		20,355
Trademarks and trade names	16	7,809		(4,135)		3,674
Technology	13	35,815		(23,124)		12,691
		$	80,276	$	(43,379)	$	36,897

Estimated Future Amortization

As of September 30, 2021, estimated amortization expense for the remainder of 2021 and thereafter was as follows:

	Amortization Expense
Remainder of 2021	$	1,445
2022	5,749
2023	5,278
2024	4,284
2025	2,467
2026 and thereafter	13,227
	$	32,450