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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 are as follows:
|  |  |  |  |  |  | Engineered |  |
| Packaging |  | Aerospace |  | Energy |  | Components |  | Total
| (dollars in thousands)
Balance, December 31, 2013 | $ | 158,060 |  |  | $ | 61,080 |  |  | $ | 75,920 |  |  | $ | 7,420 |  |  | $ | 302,480 |
Goodwill from acquisitions | 15,810 |  |  | 149,050 |  |  | — |  |  | — |  |  | 164,860 |
Foreign currency translation and other | (4,520 | ) |  | — |  |  | (2,740 | ) |  | — |  |  | (7,260 | )
Balance, December 31, 2014 | $ | 169,350 |  |  | $ | 210,130 |  |  | $ | 73,180 |  |  | $ | 7,420 |  |  | $ | 460,080 |
Goodwill from acquisitions | — |  |  | (3,500 | ) |  | — |  |  | 2,320 |  |  | (1,180 | )
Impairment charge | — |  |  | — |  |  | (70,930 | ) |  | (3,180 | ) |  | (74,110 | )
Foreign currency translation and other | (3,620 | ) |  | — |  |  | (2,250 | ) |  | — |  |  | (5,870 | )
Balance, December 31, 2015 | $ | 165,730 |  |  | $ | 206,630 |  |  | $ | — |  |  | $ | 6,560 |  |  | $ | 378,920 |
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, 2015 and 2014 are summarized below. The Company amortizes these assets over periods ranging from one to 30 years.
|  | As of December 31, 2015 |  | As of December 31, 2014
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 |  | $ | 74,890 |  |  | $ | (25,960 | ) |  | $ | 75,300 |  |  | $ | (18,180 | )
Customer relationships, 15 - 25 years |  | 132,230 |  |  | (38,060 | ) |  | 132,230 |  |  | (31,140 | )
Total customer relationships |  | 207,120 |  |  | (64,020 | ) |  | 207,530 |  |  | (49,320 | )
Technology and other, 1 - 15 years |  | 57,860 |  |  | (22,770 | ) |  | 58,040 |  |  | (18,750 | )
Technology and other, 17 - 30 years |  | 43,300 |  |  | (29,250 | ) |  | 43,300 |  |  | (27,150 | )
Total technology and other |  | 101,160 |  |  | (52,020 | ) |  | 101,340 |  |  | (45,900 | )
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |
Trademark/Trade names |  | 81,630 |  |  | — |  |  | 83,770 |  |  | — |
Total other intangible assets |  | $ | 389,910 |  |  | $ | (116,040 | ) |  | $ | 392,640 |  |  | $ | (95,220 | )
Schedule of Finite-Lived Intangible Assets, Amortization Expense | Amortization expense related to intangible assets as included in the accompanying consolidated statement of operations is summarized as follows:
|  | Year ended December 31,
|  | 2015 |  | 2014 |  | 2013
|  | (dollars in thousands)
Technology and other, included in cost of sales |  | $ | 6,010 |  |  | $ | 5,030 |  |  | $ | 4,460 |
Customer relationships, included in selling, general and administrative expenses |  | 14,960 |  |  | 11,030 |  |  | 7,830 |
Total amortization expense |  | $ | 20,970 |  |  | $ | 16,060 |  |  | $ | 12,290 |
Schedule of Expected Amortization Expense [Table Text Block] | Estimated amortization expense for the next five fiscal years beginning after December 31, 2015 is as follows:
Year ended December 31, | Estimated Amortization Expense
| (dollars in thousands)
2016 |  | $20,340
2017 |  | $20,090
2018 |  | $19,660
2019 |  | $19,240
2020 |  | $18,310

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