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Note 4 - Goodwill and Other Intangible Assets | 6 Months Ended
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Jun. 30, 2018
Notes to Financial Statements |
Goodwill and Intangible Assets Disclosure [Text Block] | 4. Goodwill and Other Intangible Assets The amounts for goodwill and changes in the carrying value by segment for the six months ended June 30, 2018 are as follows:
(in thousands) |  | Electronics |  |  | Automotive |  |  | Industrial |  |  | Total |
As of December 30, 2017 |  | $ | 278,959 |  |  | $ | 135,829 |  |  | $ | 38,626 |  |  | $ | 453,414 |
Additions (a) |  |  | 382,317 |  |  |  | — |  |  |  | — |  |  |  | 382,317 |
Currency translation |  |  | (1,558 | ) |  |  | (1,748 | ) |  |  | (198 | ) |  |  | (3,504 | )
As of June 30, 2018 |  | $ | 659,718 |  |  | $ | 134,081 |  |  | $ | 38,428 |  |  | $ | 832,227 |
(a) | The additions resulted from the acquisition of IXYS. |
The components of other intangible assets at June 30, 2018 are as follows:
(in thousands, except weighted average useful life) |  | Weighted Average Useful Life |  |  | Gross Carrying Value |  |  | Accumulated Amortization |  |  | Net Book Value |
Patents, licenses and software |  |  | 10.6 |  |  | $ | 192,326 |  |  | $ | 67,528 |  |  | $ | 124,798 |
Distribution network |  |  | 12.6 |  |  |  | 44,001 |  |  |  | 33,567 |  |  |  | 10,434 |
Customer relationships, trademarks, and tradenames |  |  | 18.1 |  |  |  | 311,333 |  |  |  | 63,326 |  |  |  | 248,007 |
Order backlog |  |  | 1.0 |  |  |  | 12,420 |  |  |  | 5,607 |  |  |  | 6,813 |
Total |  |  |  |  |  | $ | 560,080 |  |  | $ | 170,028 |  |  | $ | 390,052 |
During the six months ended June 30, 2018, the Company recorded additions to other intangible assets of $212.7 million, related to the IXYS acquisition, the components of which were as follows:
(in thousands, except weighted average useful life) |  | Weighted Average Useful Life |  |  | Amount |
Patents, licenses and software |  |  | 8.0 |  |  | $ | 51,500 |
Customer relationships, trademarks, and tradenames |  |  | 17.2 |  |  |  | 148,800 |
Order backlog |  |  | 1.0 |  |  |  | 12,420 |
Total |  |  |  |  |  | $ | 212,720 |
During the three and six months ended June 30, 2018 and July 1, 2017, the Company recorded amortization expense of $13.4 million and $6.2 million and $25.4 million and $12.1 million, respectively for intangible assets with definite lives. Estimated annual amortization expense related to intangible assets with definite lives as of June 30, 2018 is as follows:
(in thousands) |  | Amount |
2018 |  | $ | 53,440 |
2019 |  |  | 40,511 |
2020 |  |  | 40,240 |
2021 |  |  | 38,457 |
2022 |  |  | 37,456 |
2023 and thereafter |  |  | 206,466 |
Total |  | $ | 416,570 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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