Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2011
NI Industries business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sale of Productive Assets		$ 6.7
Precision Tool Cutting and Specialty Fittings Line of Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset						$ 2.5
Proceeds from Divestiture of Businesses			$ 1.0	$ 0.0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					$ 1.3
Specialty Laminates, Jacketings and Insulation Tapes Line of Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restructuring Charges	$ 1.8