Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2024

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 millions)	Advanced Electronics Solutions		Elastomeric Material Solutions		Other		Total
December 31, 2023	$	117.7	$	239.9	$	2.2	$	359.8
Foreign currency translation adjustment	(1.5)		(1.1)		—		$	(2.6)
March 31, 2024	$	116.2	$	238.8	$	2.2	$	357.2

Schedule of Intangible Assets

The carrying amount of other intangible assets were as follows:

	March 31, 2024						December 31, 2023
(Dollars in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	177.0	$	91.4	$	85.6	$	177.9	$	90.0	$	87.9
Technology	76.8		58.6		18.2		77.4		58.1		19.3
Trademarks and trade names	19.3		7.4		11.9		19.4		7.4		12.0
Covenants not to compete	1.3		1.0		0.3		1.3		0.9		0.4
Total definite-lived other intangible assets	274.4		158.4		116.0		276.0		156.4		119.6
Indefinite-lived other intangible asset	4.3		—		4.3		4.3		—		4.3
Total other intangible assets	$	278.7	$	158.4	$	120.3	$	280.3	$	156.4	$	123.9

Schedule of Weighted Average Amortization Period, by Intangible Asset Class

The weighted average amortization period as of March 31, 2024, by definite-lived other intangible asset class, is presented in the table below:

	Weighted Average Remaining Amortization Period
Customer relationships	7.3 years
Technology	3.2 years
Trademarks and trade names	9.8 years
Covenants not to compete	0.4 years
Total definite-lived other intangible assets	6.9 years