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Segment, Geographic, Product and Significant Customer Information (Tables) | 6 Months Ended
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Jun. 30, 2018
Segment Reporting [Abstract] |
Total net revenue | The following tables summarize total net revenues and long-lived assets (excluding intangible assets) attributed to significant countries (in thousands)
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, 2018 |  |  | July 1, 2017 |  |  | June 30, 2018 |  |  | July 1, 2017 |
Total net revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
South Korea |  | $ | 30,980 |  |  | $ | 31,500 |  |  | $ | 68,798 |  |  | $ | 50,119 |
Japan |  |  | 15,017 |  |  |  | 9,267 |  |  |  | 28,396 |  |  |  | 12,620 |
United States |  |  | 7,392 |  |  |  | 8,297 |  |  |  | 14,130 |  |  |  | 21,870 |
China |  |  | 28,333 |  |  |  | 7,330 |  |  |  | 36,375 |  |  |  | 14,017 |
Taiwan |  |  | 1,974 |  |  |  | 4,878 |  |  |  | 3,034 |  |  |  | 16,711 |
Singapore |  |  | 2,380 |  |  |  | 963 |  |  |  | 14,535 |  |  |  | 2,454 |
Other |  |  | 2,528 |  |  |  | 2,192 |  |  |  | 5,649 |  |  |  | 5,950 |
Total net revenues |  | $ | 88,604 |  |  | $ | 64,427 |  |  | $ | 170,917 |  |  | $ | 123,741 |
Long-lived tangible assets |
|  | June 30, 2018 |  |  | December 30, 2017 |
Long-lived tangible assets: |  |  |  |  |  |  |  |
United States |  | $ | 41,851 |  |  | $ | 43,427 |
International |  |  | 1,199 |  |  |  | 1,383 |
Total long-lived tangible assets |  | $ | 43,050 |  |  | $ | 44,810 |

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- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. 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 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + 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=115929826&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=115205541&loc=SL114868664-224227 + Details
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