Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the net carrying amount of goodwill by operating segment were as follows:

(Dollars in thousands)	Advanced Electronics Solutions		Elastomeric Material Solutions		Other		Total
December 31, 2020	$	124,927	$	143,021	$	2,224	$	270,172
Foreign currency translation adjustment	(3,075)		(660)		—		$	(3,735)
March 31, 2021	$	121,852	$	142,361	$	2,224	$	266,437

Schedule of Intangible Assets

The gross and net carrying amounts, as well as the accumulated amortization of other intangible assets were as follows:

	March 31, 2021						December 31, 2020
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	150,060	$	73,022	$	77,039	$	150,863	$	72,014	$	78,849
Technology	80,208		51,671		28,536		83,469		53,540		29,929
Trademarks and trade names	12,009		8,316		3,693		12,039		8,149		3,890
Covenants not to compete	1,340		877		463		1,340		827		513
Total definite-lived other intangible assets	243,617		133,886		109,731		247,711		134,530		113,181
Indefinite-lived other intangible asset	4,642		—		4,642		4,845		—		4,845
Total other intangible assets	$	248,259	$	133,886	$	114,373	$	252,556	$	134,530	$	118,026

Schedule of Weighted Average Amortization Period, by Intangible Asset Class

The weighted average amortization period as of March 31, 2021, by definite-lived other intangible asset class, was as follows:

Definite-Lived Other Intangible Asset Class	Weighted Average Remaining Amortization Period
Customer relationships	7.6 years
Technology	3.8 years
Trademarks and trade names	4.9 years
Covenants not to compete	1.1 years
Total definite-lived other intangible assets	6.5 years