Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for the period ending December 31, 2023, by operating segment, were as follows:

(Dollars in millions)	Advanced Electronics Solutions		Elastomeric Material Solutions		Other		Total
December 31, 2022	$	115.4	$	234.8	$	2.2	$	352.4
Foreign currency translation adjustment	2.3		5.1		—		7.4
December 31, 2023	$	117.7	$	239.9	$	2.2	$	359.8

Schedule of Intangible Assets

The carrying amount of other intangible assets were as follows:

	December 31, 2023						December 31, 2022
(Dollars in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	177.9	$	90.0	$	87.9	$	178.6	$	85.6	$	93.0
Technology	77.4		58.1		19.3		82.4		59.1		23.3
Trademarks and trade names	19.4		7.4		12.0		19.1		6.6		12.5
Covenants not to compete	1.3		0.9		0.4		1.9		1.2		0.7
Total definite-lived other intangible assets	276.0		156.4		119.6		282.0		152.5		129.5
Indefinite-lived other intangible asset	4.3		—		4.3		4.2		—		4.2
Total other intangible assets	$	280.3	$	156.4	$	123.9	$	286.2	$	152.5	$	133.7

Schedule of Weighted Average Amortization Period, by Intangible Asset Class

The weighted average amortization period as of December 31, 2023, by definite-lived other intangible asset class, is presented in the table below:

Definite-Lived Other Intangible Asset Class	Weighted Average Remaining Amortization Period
Customer relationships	7.4 years
Technology	3.3 years
Trademarks and trade names	10.0 years
Covenants not to compete	0.5 years
Total definite-lived other intangible assets	7.0 years