Revenues, Recognition and Allowances - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) transaction_type	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment transaction_type product	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Types of transactions | transaction_type	3		3
Segments | segment			1
Allowance for doubtful accounts	$ 2.5		$ 2.5		$ 2.6
Allowance for doubtful accounts related to one customer	1.7		$ 1.7		1.7
Accounts receivable, terms of customer credit			100 days
Percentage of net sales for royalty			40.00%
Royalty expense	0.5	$ 0.5	$ 1.1	$ 2.0
United States
Disaggregation of Revenue [Line Items]
Products manufactured, marketed and distributed | product			4
Net Of SRA Balance
Disaggregation of Revenue [Line Items]
Accounts receivable	$ 19.2		$ 19.2		$ 18.1