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Note 12 - Information Concerning Product Lines, Geographic Information and Revenue Concentration (Tables) | 9 Months Ended
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Sep. 27, 2020
Notes Tables |
Revenue from External Customers by Products and Services [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 27, |  |  | September 29, |  |  | September 27, |  |  | September 29, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Revenue by product line (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New products |  | $ | 639 |  |  | $ | 1,015 |  |  | $ | 1,945 |  |  | $ | 2,413 |
Mature products |  |  | 1,141 |  |  |  | 1,143 |  |  |  | 4,189 |  |  |  | 5,026 |
Total revenue |  | $ | 1,780 |  |  | $ | 2,158 |  |  | $ | 6,134 |  |  | $ | 7,439 |
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 27, |  |  | September 29, |  |  | September 27, |  |  | September 29, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Revenue by geography: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asia Pacific (1) |  | $ | 320 |  |  | $ | 528 |  |  | $ | 1,505 |  |  | $ | 2,496 |
North America (2) |  |  | 1,087 |  |  |  | 1,518 |  |  |  | 3,321 |  |  |  | 3,747 |
Europe |  |  | 373 |  |  |  | 112 |  |  |  | 1,308 |  |  |  | 1,196 |
Total revenue |  | $ | 1,780 |  |  | $ | 2,158 |  |  | $ | 6,134 |  |  | $ | 7,439 |
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 27, |  |  | September 29, |  |  | September 27, |  |  | September 29, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Distributor "A" |  |  | 22 | % |  |  | 55 | % |  |  | 29 | % |  |  | 43 | %
Distributor "C" |  |  | 20 | % |  |  | * |  |  |  | 18 | % |  |  | 10 | %
Distributor "E" |  |  | 13 | % |  |  | 11 | % |  |  | 19 | % |  |  | * |
Distributor "G" |  |  | * |  |  |  | * |  |  |  | * |  |  |  | 12 | %
Customer "B" |  |  | 10 | % |  |  | 17 | % |  |  | 12 | % |  |  | 14 | %
Customer "F" |  |  | 13 | % |  |  | 11 | % |  |  | 19 | % |  |  | * |
Customer "I" |  |  | * |  |  |  | * |  |  |  | * |  |  |  | 11 | %
Customer "J" |  |  | * |  |  |  | 10 | % |  |  | * |  |  |  | * |
Customer "K" |  |  | 12 | % |  |  | * |  |  |  | * |  |  |  | * |
Customer "N" |  |  | 16 | % |  |  | 14 | % |  |  | * |  |  |  | * |
|  | September 27, |  |  | December 29, |
|  | 2020 |  |  | 2019 |
Distributor "A" |  |  | 12 | % |  |  | 20 | %
Distributor "C" |  |  | 20 | % |  |  | 23 | %
Distributor "E" |  |  | 10 | % |  |  | 12 | %
Distributor "J" |  |  | 27 | % |  |  | 31 | %

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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