Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Goodwill and other intangible assets
Goodwill, Gross	$ 13.7	$ 10.3
Goodwill, Net	13.7	10.3
Total Goodwill and other intangible assets, Gross	54.9	42.6
Other intangible assets, Accumulated Amortization	(9.2)	(8.8)
Total Goodwill and other intangible assets, Net	45.7	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	(4.9)	(4.8)
Other intangible assets, Net	1.6	1.7
In-process research and development
Goodwill and other intangible assets
Other intangible assets, Gross	30.4	21.5
Other intangible assets, Net	30.4	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	$ (4.3)	(4.0)
Other intangible assets, Net		$ 0.3