Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill activity for each of the Company’s reportable segments that carry goodwill, Specialty Chemicals and Engineered Materials (SCEM), Microcontamination Control (MC) and Advanced Materials Handling (AMH), for the years ended December 31, 2019 and 2018 is shown below:



(In thousands)	SCEM			MC			AMH		Total
December 31, 2017	$	304,270		$	8,007		$	47,411	$	359,688
Addition due to acquisitions	—			183,729			9,660		193,389
Other, including foreign currency translation	(2,847		)	(28		)	—		(2,875		)
December 31, 2018	301,423			191,708			57,071		550,202
Addition due to acquisitions	98,410			47,711			—		146,121
Purchase accounting adjustments	—			451			—		451
Other, including foreign currency translation	(1,881		)	151			—		(1,730		)
December 31, 2019	$	397,952		$	240,021		$	57,071	$	695,044

Schedule of Acquired Finite-Lived Intangible Assets by Major Class

Identifiable intangible assets at December 31, 2019 and 2018 consist of the following:



2019
(In thousands)	Gross carrying Amount		Accumulated amortization		Net carrying value		Weighted average life in years
Developed technology	272,334		204,689		67,645		7.1
Trademarks and trade names	29,106		16,326		12,780		10.1
Customer relationships	405,537		161,551		243,986		11.8
Other	36,303		26,762		9,541		4.1
	$	743,280	$	409,328	$	333,952	9.7



2018
(In thousands)	Gross carrying amount		Accumulated amortization		Net carrying value		Weighted average life in years
Developed technology	248,776		176,421		72,355		7.0
Trademarks and trade names	25,643		14,749		10,894		10.5
Customer relationships	328,050		133,068		194,982		10.8
Other	36,306		18,850		17,456		4.1
	$	638,775	$	343,088	$	295,687	8.9

Amortization of Intangibles

The table below sets forth the amortization expense for the years ended December 31, 2019, 2018, and 2017:



(In thousands)	2019		2018		2017
Amortization expense	$	66,428	$	62,152	$	44,023

Estimated Future Amortization Expense



(In thousands)	2020		2021		2022		2023		2024		Thereafter		Total
Future amortization expense	$	50,930	$	44,297	$	43,569	$	42,880	$	29,976	$	122,300	$	333,952