| Goodwill and Intangible Assets Disclosure [Text Block] |
Goodwill and Other Intangible Assets Changes in the carrying amount of goodwill for the three months ended March 31, 2012 are summarized as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Packaging | | Energy | | Aerospace & Defense | | Engineered Components | | Cequent Asia Pacific | | Cequent North America | | Total | | (dollars in thousands) | Balance, December 31, 2011 | $ | 122,330 |
| | $ | 48,720 |
| | $ | 41,130 |
| | $ | 3,180 |
| | $ | — |
| | $ | — |
| | $ | 215,360 |
| Goodwill from acquisitions | 34,600 |
| | — |
| | — |
| | — |
| | — |
| | — |
| | 34,600 |
| Foreign currency translation | 1,210 |
| | 160 |
| | — |
| | — |
| | — |
| | — |
| | 1,370 |
| Balance, March 31, 2012 | $ | 158,140 |
| | $ | 48,880 |
| | $ | 41,130 |
| | $ | 3,180 |
| | $ | — |
| | $ | — |
| | $ | 251,330 |
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The gross carrying amounts and accumulated amortization of the Company's other intangibles as of March 31, 2012 and December 31, 2011 are summarized below. The Company amortizes these assets over periods ranging from 1 to 30 years. | | | | | | | | | | | | | | | | | | | | As of March 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) | Customer relationships: | | | | | | | | | 5 – 12 years | | $ | 71,400 |
| | $ | (24,510 | ) | | $ | 37,400 |
| | $ | (23,410 | ) | 15 – 25 years | | 154,610 |
| | (79,790 | ) | | 154,610 |
| | (77,730 | ) | Total customer relationships | | 226,010 |
| | (104,300 | ) | | 192,010 |
| | (101,140 | ) | Technology and other: | | | | | | | | | 1 – 15 years | | 36,890 |
| | (24,230 | ) | | 29,360 |
| | (23,710 | ) | 17 – 30 years | | 43,680 |
| | (21,410 | ) | | 43,640 |
| | (20,860 | ) | Total technology and other | | 80,570 |
| | (45,640 | ) | | 73,000 |
| | (44,570 | ) | Trademark/Trade names (indefinite life) | | 44,900 |
| | — |
| | 36,370 |
| | — |
| | | $ | 351,480 |
| | $ | (149,940 | ) | | $ | 301,380 |
| | $ | (145,710 | ) |
Amortization expense related to intangible assets as included in the accompanying consolidated statement of operations is summarized as follows: | | | | | | | | | | | | Three months ended
March 31, | | | 2012 | | 2011 | | | (dollars in thousands) | Technology and other, included in cost of sales | | $ | 1,070 |
| | $ | 820 |
| Customer relationships, included in selling, general and administrative expenses | | 3,130 |
| | 2,680 |
| Total amortization expense | | $ | 4,200 |
| | $ | 3,500 |
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