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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The changes in the carrying amount of goodwill for the period ending March 31, 2017, by segment, were as follows:
(Dollars in thousands) | Advanced Connectivity Solutions |  | Elastomeric Material Solutions |  | Power Electronics Solutions |  | Other |  | Total
December 31, 2016 | $ | 51,693 |  |  | $ | 91,531 |  |  | $ | 62,983 |  |  | $ | 2,224 |  |  | $ | 208,431 |
Foreign currency translation adjustment | — |  |  | 1,143 |  |  | 746 |  |  | — |  |  | 1,889 |
Purchase accounting adjustment | — |  |  | 116 |  |  | — |  |  | — |  |  | 116 |
DSP acquisition | — |  |  | 17,793 |  |  | — |  |  | — |  |  | 17,793 |
March 31, 2017 | $ | 51,693 |  |  | $ | 110,583 |  |  | $ | 63,729 |  |  | $ | 2,224 |  |  | $ | 228,229 |
Intangible Assets | Intangible Assets
| March 31, 2017 |  | December 31, 2016
(Dollars in thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Trademarks and patents | $ | 10,177 |  |  | $ | 1,401 |  |  | $ | 8,776 |  |  | $ | 6,825 |  |  | $ | 1,156 |  |  | $ | 5,669 |
Technology | 71,086 |  |  | 26,217 |  |  | 44,869 |  |  | 68,880 |  |  | 24,365 |  |  | 44,515 |
Covenant not to compete | 1,751 |  |  | 1,009 |  |  | 742 |  |  | 1,419 |  |  | 932 |  |  | 487 |
Customer relationships | 127,102 |  |  | 16,127 |  |  | 110,975 |  |  | 96,148 |  |  | 14,311 |  |  | 81,837 |
Total definite lived intangible assets | 210,116 |  |  | 44,754 |  |  | 165,362 |  |  | 173,272 |  |  | 40,764 |  |  | 132,508 |
Indefinite lived intangible assets | 4,217 |  |  | — |  |  | 4,217 |  |  | 4,168 |  |  | — |  |  | 4,168 |
Total intangible assets | $ | 214,333 |  |  | $ | 44,754 |  |  | $ | 169,579 |  |  | $ | 177,440 |  |  | $ | 40,764 |  |  | $ | 136,676 |
Weighted Average Amortization Period, by Intangible Asset Class | The weighted average amortization period as of March 31, 2017, by intangible asset class, is presented in the table below:
Intangible Asset Class |  | Weighted Average Amortization Period (Years)
Trademarks and patents |  | 7.0
Technology |  | 5.8
Customer relationships |  | 10.1
Covenant not to compete |  | 3.3
Total definite lived intangible assets |  | 8.8

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