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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Changes in the carrying amount of goodwill for the years ended December 31, 2012 and 2011 are as follows:
|  |  | Aerospace & | Engineered | Cequent | Cequent |
| Packaging | Energy | Defense | Components | Asia Pacific | Americas | Total
| (dollars in thousands)
Balance, December 31, 2010 | $ | 113,320 |  | $ | 48,260 |  | $ | 41,130 |  | $ | 3,180 |  | $ | — |  | $ | — |  | $ | 205,890 |
Goodwill from acquisitions | 9,810 |  | 720 |  | — |  | — |  | — |  | — |  | 10,530 |
Foreign currency translation and other | (800 | ) | (260 | ) | — |  | — |  | — |  | — |  | (1,060 | )
Balance, December 31, 2011 | $ | 122,330 |  | $ | 48,720 |  | $ | 41,130 |  | $ | 3,180 |  | $ | — |  | $ | — |  | $ | 215,360 |
Goodwill from acquisitions | 35,420 |  | 15,500 |  | — |  | — |  | — |  | 3,470 |  | 54,390 |
Foreign currency translation and other | 1,230 |  | (10 | ) | — |  | — |  | — |  | (30 | ) | 1,190 |
Balance, December 31, 2012 | $ | 158,980 |  | $ | 64,210 |  | $ | 41,130 |  | $ | 3,180 |  | $ | — |  | $ | 3,440 |  | $ | 270,940 |
Schedule of Intangible Assets (excluding Goodwill) by Major Class | The gross carrying amounts and accumulated amortization of the Company's other intangibles as of December 31, 2012 and 2011 are summarized below. The Company amortizes these assets over periods ranging from one to 30 years.
|  | As of December 31, 2012 |  | As of December 31, 2011
Intangible Category by Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
|  | (dollars in thousands)
Finite-lived intangible assets: |  |  |  |  |  |  |  |
Customer relationships, 5 - 12 years |  | $ | 85,740 |  |  | $ | (30,080 | ) |  | $ | 37,400 |  |  | $ | (23,410 | )
Customer relationships, 15 - 25 years |  | 154,610 |  |  | (85,960 | ) |  | 154,610 |  |  | (77,730 | )
Total customer relationships |  | 240,350 |  |  | (116,040 | ) |  | 192,010 |  |  | (101,140 | )
Technology and other, 1 - 15 years |  | 37,130 |  |  | (26,320 | ) |  | 29,360 |  |  | (23,710 | )
Technology and other, 17 - 30 years |  | 43,800 |  |  | (23,070 | ) |  | 43,640 |  |  | (20,860 | )
Total technology and other |  | 80,930 |  |  | (49,390 | ) |  | 73,000 |  |  | (44,570 | )
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |
Trademark/Trade names |  | 50,310 |  |  | — |  |  | 36,370 |  |  | — |
Total other intangible assets |  | $ | 371,590 |  |  | $ | (165,430 | ) |  | $ | 301,380 |  |  | $ | (145,710 | )
Schedule of Finite-Lived Intangible Assets, Amortization Expense | Amortization expense related to intangible assets as included in the accompanying consolidated statement of income is summarized as follows:
|  | Year ended December 31,
|  | 2012 |  | 2011 |  | 2010
|  | (dollars in thousands)
Technology and other, included in cost of sales |  | $ | 4,940 |  |  | $ | 3,490 |  |  | $ | 3,580 |
Customer relationships, included in selling, general and administrative expenses |  | 14,880 |  |  | 11,020 |  |  | 10,510 |
Total amortization expense |  | $ | 19,820 |  |  | $ | 14,510 |  |  | $ | 14,090 |
Schedule of Expected Amortization Expense [Table Text Block] | Estimated amortization expense for the next five fiscal years beginning after December 31, 2012 is as follows:
Year ended December 31, |  | Estimated Amortization Expense
|  | (dollars in thousands)
2013 |  | $ | 19,850 |
2014 |  | $ | 19,700 |
2015 |  | $ | 18,940 |
2016 |  | $ | 18,540 |
2017 |  | $ | 18,260 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 47 -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 FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -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. + Details
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