Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

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, 2018	$	76.0	$	29.8	$	105.8
Goodwill recorded due to acquisition	2.6		—		2.6
Foreign currency translation	(0.5)		(0.1)		(0.6)
Balance, December 31, 2019	78.1		29.7		107.8
Foreign currency translation	2.8		0.5		3.3
Balance, December 31, 2020	$	80.9	$	30.2	$	111.1

Schedule of Intangible Assets by Major Class

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

	2020						2019
($ in millions)	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Patents and licensing	$	25.9	$	(17.9)	$	8.0	$	21.5	$	(16.0)	$	5.5
Technology	3.3		(1.7)		1.6		3.3		(1.5)		1.8
Trademarks	2.0		(1.8)		0.2		2.0		(1.8)		0.2
Customer relationships	40.9		(23.4)		17.5		40.3		(21.6)		18.7
Customer contracts	11.1		(7.9)		3.2		11.0		(7.4)		3.6
	$	83.2	$	(52.7)	$	30.5	$	78.1	$	(48.3)	$	29.8