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Restructuring and Impairment Charges (Restructuring and Impairment Charges) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring cost |  | $ 1,231 |  | $ 0 | $ 5,756 |
Employee Severance [Member] |  |  |  |  |  |
Cost of Revenue [Abstract] |  |  |  |  |  |
Union ratification bonus |  | 0 |  |  | 368 |
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring charges |  | 1,231 |  |  | 5,756 |
Employee Severance [Member] | Printed Circuit Materials [Member] |  |  |  |  |  |
Cost of Revenue [Abstract] |  |  |  |  |  |
Union ratification bonus |  | 0 |  |  | 179 |
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring charges |  | 93 | [1] |  | 802 | [1]
Employee Severance [Member] | High Performance Foams [Member] |  |  |  |  |  |
Cost of Revenue [Abstract] |  |  |  |  |  |
Union ratification bonus |  | 0 |  |  | 181 |
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring charges |  | 94 | [1] |  | 1,345 | [1]
Employee Severance [Member] | Power Electronics Solutions [Member] |  |  |  |  |  |
Cost of Revenue [Abstract] |  |  |  |  |  |
Union ratification bonus |  | 0 |  |  | 8 |
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring charges |  | 1,031 | [1] |  | 3,494 | [1]
Employee Severance [Member] | Other [Member] |  |  |  |  |  |
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring charges |  | 13 | [1] |  | 115 | [1]
Curtailment Charge [Member] | Streamlining and Restructuring Related Activities [Member] |  |  |  |  |  |
Restructuring Costs and Asset Impairment Charges [Abstract] |  |  |  |  |  |
Restructuring cost |  |  |  |  | $ 1,500 |
[1] | For the nine month periods ended September 30, 2013, this includes a pension curtailment charge of $1.5 million. See Note 8 - "Pension Benefit and Other Post Retirement Plans" for further information.

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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