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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Intangible Assets
(Dollars in thousands) | September 30, 2015 |  | December 31, 2014
| Gross Carrying Amount (1) |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount (1) |  | Accumulated Amortization |  | Net Carrying Amount
Trademarks and patents | $ | 2,537 |  |  | $ | 615 |  |  | $ | 1,922 |  |  | $ | 1,046 |  |  | $ | 364 |  |  | $ | 682 |
Technology | 47,423 |  |  | 18,731 |  |  | 28,692 |  |  | 33,942 |  |  | 15,958 |  |  | 17,984 |
Covenant-not-to-compete | 935 |  |  | 891 |  |  | 44 |  |  | 1,016 |  |  | 823 |  |  | 193 |
Customer relationships | 50,282 |  |  | 7,781 |  |  | 42,501 |  |  | 19,123 |  |  | 4,406 |  |  | 14,717 |
Total definite lived intangible assets | 101,177 |  |  | 28,018 |  |  | 73,159 |  |  | 55,127 |  |  | 21,551 |  |  | 33,576 |
Indefinite lived intangible assets | 4,418 |  |  | — |  |  | 4,418 |  |  | 4,764 |  |  | — |  |  | 4,764 |
Total intangible assets | $ | 105,595 |  |  | $ | 28,018 |  |  | $ | 77,577 |  |  | $ | 59,891 |  |  | $ | 21,551 |  |  | $ | 38,340 |
(1) Gross carrying amounts and accumulated amortization may differ from prior periods due to foreign exchange rate fluctuations.
Weighted Average Amortization Period, by Intangible Asset Class | The weighted average amortization period as of September 30, 2015, by intangible asset class, is presented in the table below:
Intangible Asset Class |  | Weighted Average Amortization Period (Years)
Trademarks and patents |  | 4.5
Technology |  | 5.0
Covenant not-to-compete |  | 1.0
Customer relationships |  | 6.3
Total definite lived intangible assets |  | 5.7
Changes in the Carrying Amount of Goodwill, by Segment | The changes in the carrying amount of goodwill for the period ending September 30, 2015, by segment, were as follows:
(Dollars in thousands) | Advanced Connectivity Solutions |  | Elastomeric Material Solutions |  | Power Electronics Solutions |  | Other |  | Total
December 31, 2014 | $ | — |  |  | $ | 23,565 |  |  | $ | 72,438 |  |  | $ | 2,224 |  |  | $ | 98,227 |
Foreign currency translation adjustment | — |  |  | (1,301 | ) |  | (5,659 | ) |  | — |  |  | (6,960 | )
Arlon acquisition | 52,444 |  |  | 33,893 |  |  | — |  |  | — |  |  | 86,337 |
September 30, 2015 | $ | 52,444 |  |  | $ | 56,157 |  |  | $ | 66,779 |  |  | $ | 2,224 |  |  | $ | 177,604 |

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