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Geographic and Significant Customer Information | 9 Months Ended
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Sep. 28, 2013
Geographic and Significant Customer Information [Abstract] |
Geographic and Significant Customer Information | Geographic and Significant Customer Information The Company has one operating segment, which is the sale, design, manufacture, marketing and support of thin film, optical critical dimension, overlay dimension metrology and inspection systems. The following table summarizes total net revenues (based on the deployments and service location of the systems) and long-lived assets (excluding intangible assets) attributed to significant geographic regions (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 28, 2013 |  | September 29, 2012 |  | September 28, 2013 |  | September 29, 2012
Total net revenues: |  |  |  |  |  |  |
United States | $ | 15,665 |  |  | $ | 6,888 |  |  | $ | 41,426 |  |  | $ | 32,337 |
China | 901 |  |  | 1,270 |  |  | 6,952 |  |  | 3,907 |
Japan | 2,387 |  |  | 5,896 |  |  | 9,617 |  |  | 12,746 |
South Korea | 9,805 |  |  | 18,554 |  |  | 18,946 |  |  | 75,663 |
Israel | 486 |  |  | 147 |  |  | 1,248 |  |  | 6,623 |
Taiwan | 3,737 |  |  | 6,233 |  |  | 6,959 |  |  | 12,105 |
Singapore | 2,157 |  |  | 792 |  |  | 6,602 |  |  | 1,579 |
All Other | 3,906 |  |  | 4,158 |  |  | 6,398 |  |  | 7,651 |
Total net revenues | $ | 39,044 |  |  | $ | 43,938 |  |  | $ | 98,148 |  |  | $ | 152,611 |
| At
| September 28, 2013 |  | December 29, 2012
Long-lived tangible assets: |  |  |
United States | $ | 43,771 |  |  | $ | 40,600 |
Japan | 107 |  |  | 148 |
South Korea | 476 |  |  | 520 |
All Other | 2,243 |  |  | 1,945 |
Total long-lived tangible assets | $ | 46,597 |  |  | $ | 43,213 |
The following customers accounted for 10% or more of total accounts receivable:
| At
| September 28, 2013 |  | December 29, 2012
Intel Corporation | 10.0 | % |  | 12.3 | %
SK Hynix | 46.0 | % |  | *** |
Samsung Electronics Co. Ltd. | *** |  |  | *** |
Micron Technology, Inc. | *** |  |  | *** |
Taiwan Semiconductor Mfg. Co. | *** |  |  | 17.3 | %
*** The customer accounted for less than 10% of total accounts receivable for that period. The following customers accounted for 10% or more of total revenue
| Three Months Ended |  | Nine Months Ended
| September 28, 2013 |  | September 29, 2012 |  | September 28, 2013 |  | September 29, 2012
Intel Corporation | 34.3 | % |  | 15.3 | % |  | 29.8 | % |  | 20.1 | %
SK Hynix | 23.3 | % |  | 24.1 | % |  | 17.5 | % |  | 18.9 | %
Samsung Electronics Co. Ltd. | *** |  |  | 17.4 | % |  | 9.4 | % |  | 31.6 | %
Taiwan Semiconductor Mfg. Co. | *** |  |  | 12.8 | % |  | *** |  |  | *** |

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- Definition Geographic and significant customer information. + References No definition available. + Details
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