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Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets | Intangible assets, net, consist of the following (in thousands):
| March 31, 2018 |  | December 30, 2017
Patents | $ | 21,558 |  |  | $ | 20,623 |
Licenses-related party | 8,000 |  |  | 7,500 |
Customer relationships | 7,669 |  |  | 7,669 |
Acquired technology | 5,580 |  |  | 5,580 |
Trademarks | 4,112 |  |  | 4,036 |
Capitalized software development costs | 2,868 |  |  | 2,699 |
Other | 5,466 |  |  | 3,691 |
Total intangible assets | 55,253 |  |  | 51,798 |
Accumulated amortization | (25,800 | ) |  | (24,675 | )
Intangible assets, net | $ | 29,453 |  |  | $ | 27,123 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Estimated amortization expense for future fiscal years is as follows (in thousands):
Fiscal year | Amount
2018 (balance of year) | $ | 5,091 |
2019 | 3,748 |
2020 | 3,598 |
2021 | 3,345 |
2022 | 2,173 |
Thereafter | 11,498 |
Total | $ | 29,453 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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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