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Segment Information Operating Net Assets by Segment (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | $ 883,760 | $ 765,560 | $ 711,290 |
Current Liabilities | 247,200 | 226,340 | 214,430 |
Consolidated Assets | 1,130,960 | 991,900 | 925,720 |
Continuing Operations [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 883,760 | 765,560 | 686,640 | [1]
Continuing Operations [Member] | Packaging [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 376,040 | 310,520 | 264,870 |
Continuing Operations [Member] | Energy [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 158,710 | 116,980 | 104,270 |
Continuing Operations [Member] | Aerospace & Defense [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 80,620 | 71,280 | 71,300 |
Continuing Operations [Member] | Engineered Components [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 68,870 | 63,420 | 52,590 |
Continuing Operations [Member] | Cequent Asia Pacific [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 51,790 | 42,010 | 32,570 |
Continuing Operations [Member] | Cequent Americas [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 145,360 | 126,680 | 141,910 |
Continuing Operations [Member] | Corporate [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | 2,370 | 34,670 | 19,130 |
Discontinued Operations [Member] |  |  |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |  |  |
Operating Net Assets | $ 0 | $ 0 | $ 24,650 |
[1] | Excludes discontinued operations. See Note 6, "Discontinued Operations."

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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