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Intangible Assets, Net (Details) - USD ($) $ in Thousands | Dec. 29, 2017 | Dec. 30, 2016
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Amortized intangible assets: |  |
Amortized intangible assets, Gross Carrying Amount | $ 11,521 | $ 11,421
Amortized intangible assets, Accumulated Amortization | (11,250) | (10,948)
Amortized intangible assets, Net | 271 | 473
Patents and Licenses [Member] |  |
Amortized intangible assets: |  |
Amortized intangible assets, Gross Carrying Amount | 9,244 | 9,224
Amortized intangible assets, Accumulated Amortization | (8,973) | (8,930)
Amortized intangible assets, Net | 271 | 294
Customer relationships [Member] |  |
Amortized intangible assets: |  |
Amortized intangible assets, Gross Carrying Amount | 1,392 | 1,343
Amortized intangible assets, Accumulated Amortization | (1,392) | (1,209)
Amortized intangible assets, Net | 0 | 134
Developed technology [Member] |  |
Amortized intangible assets: |  |
Amortized intangible assets, Gross Carrying Amount | 885 | 854
Amortized intangible assets, Accumulated Amortization | (885) | (809)
Amortized intangible assets, Net | $ 0 | $ 45

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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://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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