Segment Information (Details 2) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Goodwill and intangible assets by segment
Goodwill and intangible assets	$ 56.8	$ 56.2
Composite Materials
Goodwill and intangible assets by segment
Goodwill and intangible assets	40.8	40.1
Engineered Products
Goodwill and intangible assets by segment
Goodwill and intangible assets	$ 16.0	$ 16.1