Goodwill and Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 107.8	$ 105.8
Goodwill recorded due to acquisition		2.6
Foreign currency translation	3.3	(0.6)
Goodwill, ending balance	111.1	107.8
Proprietary Products
Goodwill [Roll Forward]
Goodwill, beginning balance	78.1	76.0
Goodwill recorded due to acquisition		2.6
Foreign currency translation	2.8	(0.5)
Goodwill, ending balance	80.9	78.1
Contract-Manufactured Products
Goodwill [Roll Forward]
Goodwill, beginning balance	29.7	29.8
Goodwill recorded due to acquisition		0.0
Foreign currency translation	0.5	(0.1)
Goodwill, ending balance	$ 30.2	$ 29.7