Segment Information - Additional Information (Details) $ in Millions	3 Months Ended												12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	[1]	Sep. 30, 2016 USD ($)	[1]	Jun. 30, 2016 USD ($)	[1]	Mar. 31, 2016 USD ($)	[1]	Dec. 31, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segment													2
Net sales	$ 247.6	$ 248.7	$ 224.4	$ 177.8	$ 176.1		$ 186.7		$ 172.3		$ 172.8		$ 898.5	$ 707.9	$ 768.0
Non-US
Segment Reporting Information [Line Items]
Net sales													224.4	197.7	191.2
Exports From U.S. To Other Regions
Segment Reporting Information [Line Items]
Net sales													$ 58.0	$ 88.0	$ 146.2

[1] The adoption of ASU 2016-09 in the fourth quarter of 2016 did not impact the previously-reported quarterly results for 2016.