GOODWILL AND INTANGIBLES

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in the carrying amount of goodwill by reportable segments for the years ended December 31, 2019 and 2018 were as follows:



	Americas Welding			International Welding			The Harris Products Group			Consolidated
Balance as of December 31, 2017	$	197,259		$	25,667		$	11,656		$	234,582
Additions and adjustments ⁽¹⁾	44,408			1,224			6,525			52,157
Foreign currency translation	(2,452		)	(2,643		)	(350		)	(5,445		)
Balance as of December 31, 2018	239,215			24,248			17,831			281,294
Additions and adjustments ⁽²⁾	37,346			17,254			(613		)	53,987
Foreign currency translation	1,935			(28		)	(81		)	1,826
Balance as of December 31, 2019	$	278,496		$	41,474		$	17,137		$	337,107


(1)	Additions to Americas Welding reflect goodwill recognized in the acquisitions of Coldwater, Pro Systems and Inovatech in 2018. Additions to The Harris Products Group reflect goodwill recognized in the acquisition of Worthington in 2018.

(2) Additions to Americas Welding reflect goodwill recognized in the acquisition of Baker in 2019. Additions to International Welding reflect goodwill recognized in the acquisition of Askaynak in 2019.

Gross carrying values and accumulated amortization of intangible assets other than goodwill by asset class were as follows:



	December 31, 2019				December 31, 2018
	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Intangible assets not subject to amortization
Trademarks and trade names	$	22,020			$	23,385
Intangible assets subject to amortization
Trademarks and trade names	$	65,957	$	31,284	$	50,458	$	26,357
Customer relationships	140,198		62,242		113,837		52,518
Patents	25,931		13,633		26,848		13,307
Other	70,463		39,612		60,373		34,773
Total intangible assets subject to amortization	$	302,549	$	146,771	$	251,516	$	126,955

During 2019, the Company acquired intangible assets either individually or as part of a group of assets, with an initial purchase price allocation and weighted-average lives as follows:



	Year Ended December 31, 2019
	Purchase Price Allocation	Weighted Average Life
Acquired intangible assets subject to amortization
Trademarks and trade names	14,500	9
Customer relationships	27,600	10
Other	7,970	9
Total acquired intangible assets subject to amortization	50,070

Aggregate amortization expense was $20,755, $15,744 and $15,671 for 2019, 2018 and 2017, respectively. Estimated annual amortization expense for intangible assets for each of the next five years is $22,002 in 2020, $21,191 in 2021, $20,267 in 2022, $18,247 in 2023 and $15,740 in 2024.