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Segment, Geographic, Product and Significant Customer Information (Tables) | 6 Months Ended
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Jun. 27, 2015
Segment Reporting [Abstract] |
Total net revenue |
| Three Months Ended |  | Six Months Ended
| June 27, 2015 |  | June 28, 2014 |  | June 27, 2015 |  | June 28, 2014
Total net revenues: |  |  |  |  |  |  |
United States | $ | 15,052 |  |  | 13,302 |  |  | $ | 24,130 |  |  | 20,043 |
South Korea | 7,370 |  |  | 8,373 |  |  | 22,013 |  |  | 24,262 |
Singapore | 10,090 |  |  | 496 |  |  | 12,887 |  |  | 1,079 |
Taiwan | 9,414 |  |  | 6,281 |  |  | 23,842 |  |  | 10,697 |
China | 1,625 |  |  | 9,358 |  |  | 5,626 |  |  | 24,846 |
Other | 5,078 |  |  | 10,219 |  |  | 10,507 |  |  | 18,678 |
Total net revenues | $ | 48,629 |  |  | $ | 48,029 |  |  | $ | 99,005 |  |  | $ | 99,605 |
Long-lived tangible assets |
Long-lived tangible assets: | June 27, 2015 |  | December 27, 2014
United States | $ | 45,850 |  |  | $ | 47,729 |
Taiwan | 1,313 |  |  | 1,473 |
All Other | 378 |  |  | 431 |
Total long-lived tangible assets | $ | 47,541 |  |  | $ | 49,633 |
Customers accounted for 10% or more of total accounts receivable | The following customers accounted for 10% or more of total accounts receivable, net:
| At
| June 27, 2015 |  | December 27, 2014
Micron | 33 | % |  | 24 | %
Taiwan Semiconductor Manufacturing Company Limited | 20 | % |  | 20 | %
SK Hynix | 10 | % |  | *** |
Samsung Electronics Co. Ltd. | *** |  |  | 10 | %
Global Foundries | *** |  |  | 10 | %
*** The customer accounted for less than 10% of total accounts receivable, net, as of that period end.
Customers accounted for 10% or more of total revenue | The following customers accounted for 10% or more of total net revenues:
| Three Months Ended |  | Six Months Ended
| June 27, 2015 |  | June 28, 2014 |  | June 27, 2015 |  | June 28, 2014
Micron | 32 | % |  | *** |  |  | 19 | % |  | *** |
Taiwan Semiconductor Manufacturing Company Limited | 17 | % |  | 11 | % |  | 20 | % |  | *** |
SK Hynix | 10 | % |  | 18 | % |  | 12 | % |  | 13 | %
Samsung Electronics Co. Ltd. | *** |  |  | 16 | % |  | 20 | % |  | 35 | %
Intel Corporation | *** |  |  | 18 | % |  | *** |  |  | 16 | %
Global Foundries | *** |  |  | 15 | % |  | *** |  |  | *** |
*** The customer accounted for less than 10% of total net revenues during the period.

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