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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 28, 2019 | Dec. 29, 2018
--- | --- | ---
Summary of intangible assets, net (excluding goodwill) |  |
Adjusted cost | $ 45,492 | $ 45,385
Accumulated amortization | (20,414) | (18,059)
Net carrying amount | 25,078 | 27,326
Developed technology [Member] |  |
Summary of intangible assets, net (excluding goodwill) |  |
Adjusted cost | 36,545 | 35,954
Accumulated amortization | (18,004) | (16,532)
Net carrying amount | 18,541 | 19,422
Customer relationships [Member] |  |
Summary of intangible assets, net (excluding goodwill) |  |
Adjusted cost | 6,547 | 6,531
Accumulated amortization | (2,327) | (1,519)
Net carrying amount | 4,220 | 5,012
In-process research and development [Member] |  |
Summary of intangible assets, net (excluding goodwill) |  |
Adjusted cost | 900 | 1,400
Net carrying amount | 900 | 1,400
Trade name [Member] |  |
Summary of intangible assets, net (excluding goodwill) |  |
Adjusted cost | 1,500 | 1,500
Accumulated amortization | (83) | (8)
Net carrying amount | $ 1,417 | $ 1,492

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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