Goodwill and Intangible Assets (Goodwill) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Balance, beginning	$ 105,800,000	$ 107,700,000
Goodwill recorded due to acquisition	2,600,000
Foreign currency translation	(600,000)	(1,900,000)
Balance, ending	107,800,000	105,800,000
Proprietary Products [Member]
Goodwill [Roll Forward]
Balance, beginning	76,000,000.0	77,600,000
Goodwill recorded due to acquisition	2,600,000
Foreign currency translation	(500,000)	(1,600,000)
Balance, ending	78,100,000	76,000,000.0
Contract-Manufactured Products [Member]
Goodwill [Roll Forward]
Balance, beginning	29,800,000	30,100,000
Goodwill recorded due to acquisition	0
Foreign currency translation	(100,000)	(300,000)
Balance, ending	$ 29,700,000	$ 29,800,000