Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

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

($ in millions)	Proprietary Products		Contract-Manufactured Products		Total
Balance, December 31, 2022	$	77.9	$	29.4	$	107.3
Foreign currency translation	1.0		0.2		1.2
Balance, December 31, 2023	78.9		29.6		108.5
Foreign currency translation	(2.1)		(0.4)		(2.5)
Balance, December 31, 2024	$	76.8	$	29.2	$	106.0

Schedule of Finite-Lived Intangible Assets

Intangible assets and accumulated amortization as of December 31 were as follows:

	2024						2023
($ in millions)	Cost		Accumulated amortization		Net		Cost		Accumulated amortization		Net
Patents and licensing	$	24.7	$	(23.0)	$	1.7	$	24.8	$	(21.8)	$	3.0
Technology	3.3		(2.7)		0.6		3.3		(2.5)		0.8
Trademarks	1.2		(1.2)		—		1.2		(1.2)		—
Customer relationships	38.9		(30.8)		8.1		39.5		(29.0)		10.5
Customer contracts	8.0		(7.6)		0.4		8.0		(7.2)		0.8
	$	76.1	$	(65.3)	$	10.8	$	76.8	$	(61.7)	$	15.1