Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Goodwill and other intangible assets
Goodwill, Gross	$ 10.3	$ 10.3
Goodwill, Net	10.3	10.3
Total Goodwill and other intangible assets, Gross	42.6	42.6
Other intangible assets, Accumulated Amortization	(9.0)	(8.8)
Total Goodwill and other intangible assets, Net	33.6	33.8
Technology, patents and trade names
Goodwill and other intangible assets
Other intangible assets, Gross	6.5	6.5
Other intangible assets, Accumulated Amortization	(4.8)	(4.8)
Other intangible assets, Net	1.7	1.7
In-process research and development
Goodwill and other intangible assets
Other intangible assets, Gross	21.5	21.5
Other intangible assets, Net	21.5	21.5
Customer relationships and non-compete agreements
Goodwill and other intangible assets
Other intangible assets, Gross	4.3	4.3
Other intangible assets, Accumulated Amortization	(4.2)	(4.0)
Other intangible assets, Net	$ 0.1	$ 0.3