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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Goodwill and Other Intangible Assets [Abstract] |
Goodwill rollforward | The changes in the carrying amount of goodwill by segment for the years ended December 31, 2017 and 2016 were as follows:
|  | Optoelectronic Components |  |  | Resistors & Inductors |  |  | Total |
Balance at January 1, 2016 |  | $ | 96,849 |  |  | $ | 41,395 |  |  | $ | 138,244 |
Sonntag acquisition |  |  | - |  |  |  | 3,485 |  |  |  | 3,485 |
Exchange rate effects |  |  | - |  |  |  | (322 | ) |  |  | (322 | )
Balance at December 31, 2016 |  | $ | 96,849 |  |  | $ | 44,558 |  |  | $ | 141,407 |
Exchange rate effects |  |  | - |  |  |  | 1,335 |  |  |  | 1,335 |
Balance at December 31, 2017 |  | $ | 96,849 |  |  |  | 45,893 |  |  |  | 142,742 |
Other Intangible Assets | Other intangible assets are as follows:
|  | December 31, |
|  | 2017 |  |  | 2016 |
Intangible assets subject to amortization: |  |  |  |  |  |
Patents and acquired technology |  | $ | 71,596 |  |  | $ | 93,395 |
Capitalized software |  |  | 54,325 |  |  |  | 53,807 |
Customer relationships |  |  | 63,655 |  |  |  | 84,905 |
Tradenames |  |  | 55,272 |  |  |  | 53,680 |
Non-competition agreements |  |  | 606 |  |  |  | 1,266 |
|  |  | 245,454 |  |  |  | 287,053 |
Accumulated amortization: |  |  |  |  |  |  |  |
Patents and acquired technology |  |  | (63,868 | ) |  |  | (81,807 | )
Capitalized software |  |  | (50,246 | ) |  |  | (49,388 | )
Customer relationships |  |  | (26,622 | ) |  |  | (42,787 | )
Tradenames |  |  | (34,378 | ) |  |  | (27,460 | )
Non-competition agreements |  |  | (586 | ) |  |  | (1,148 | )
|  |  | (175,700 | ) |  |  | (202,590 | )
Net Intangible Assets Subject to Amortization |  | $ | 69,754 |  |  | $ | 84,463 |
Estimated annual amortization expense for each of the next five years | Estimated annual amortization expense of intangible assets on the balance sheet at December 31, 2017 for each of the next five years is as follows:
2018 |  | $ | 11,620 |
2019 |  |  | 7,741 |
2020 |  |  | 6,750 |
2021 |  |  | 5,863 |
2022 |  |  | 5,192 |

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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 Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: 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=35741047&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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