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Segment, Geographic, Product and Significant Customer Information | 3 Months Ended
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Apr. 01, 2017
Segment Reporting [Abstract] |
Segment, Geographic, Product and Significant Customer Information | Note 13. Segment, Geographic, Product and Significant Customer Information The Company has one operating segment, which is the sale, design, manufacture, marketing and support of optical critical dimension and thin film systems. The following tables summarize total net revenues and long-lived assets (excluding intangible assets) attributed to significant countries (in thousands):
|  | Three Months Ended |
|  | April 1, 2017 |  |  | March 26, 2016 |
Total net revenues (1): |  |  |  |  |  |  |  |
South Korea |  | $ | 18,619 |  |  | $ | 8,436 |
United States |  |  | 13,573 |  |  |  | 7,191 |
Taiwan |  |  | 11,833 |  |  |  | 5,477 |
China |  |  | 6,687 |  |  |  | 6,506 |
Japan |  |  | 3,353 |  |  |  | 7,188 |
Singapore |  |  | 1,491 |  |  |  | 9,902 |
Other |  |  | 3,758 |  |  |  | 2,789 |
Total net revenues |  | $ | 59,314 |  |  | $ | 47,489 |
|  | April 1, 2017 |  |  | December 31, 2016 |
Long-lived tangible assets: |  |  |  |  |  |  |  |
United States |  | $ | 41,659 |  |  | $ | 42,688 |
International |  |  | 1,517 |  |  |  | 1,538 |
Total long-lived tangible assets |  | $ | 43,176 |  |  | $ | 44,226 |
The following customers accounted for 10% or more of total accounts receivable, net:
|  | At |
|  | April 1, 2017 |  |  | December 31, 2016 |
SK Hynix |  |  | 22.0% |  |  | *** |
Taiwan Semiconductor Manufacturing Company Limited |  |  | 20.0% |  |  |  | 20.1% |
Samsung Electronics Co. Ltd. |  |  | 13.4% |  |  |  | 14.3% |
Micron Technology, Inc. |  | *** |  |  |  | 11.8% |
Intel Corporation |  | *** |  |  |  | 11.1% |
Toshiba Corporation |  | *** |  |  |  | 10.2% |
*** | The customer accounted for less than 10% of total accounts receivable, net, as of that period end.
The following customers accounted for 10% or more of total net revenues:
|  | Three Months Ended |
|  | April 1, 2017 |  |  | March 26, 2016 |
Samsung Electronics Co. Ltd. |  |  | 21.6% |  |  | *** |
Taiwan Semiconductor Manufacturing Company Limited |  |  | 16.7% |  |  |  | 10.1% |
Intel Corporation |  |  | 15.6% |  |  |  | 15.7% |
SK Hynix |  |  | 13.6% |  |  |  | 16.7% |
Micron Technology, Inc. |  | *** |  |  |  | 25.9% |
Toshiba Corporation |  | *** |  |  |  | 11.9% |
*** | The customer accounted for less than 10% of total net revenues during the period.

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