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Segment, Geographic, Product and Significant Customer Information - Net Revenue (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 27, 2014 segment | Dec. 28, 2013 | Dec. 29, 2012
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Number of operating segments | 1 us-gaap_NumberOfOperatingSegments |  |
Total net revenues: |  |  |
Total net revenues | $ 166,443 us-gaap_SalesRevenueNet | $ 144,307 us-gaap_SalesRevenueNet | $ 182,881 us-gaap_SalesRevenueNet
United States [Member] |  |  |
Total net revenues: |  |  |
Total net revenues | 36,123 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_DomesticCountryMember | 47,019 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_DomesticCountryMember | 44,811 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_DomesticCountryMember
South Korea [Member] |  |  |
Total net revenues: |  |  |
Total net revenues | 41,381 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_KP | 34,873 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_KP | 79,555 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_KP
China [Member] |  |  |
Total net revenues: |  |  |
Total net revenues | 28,702 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN | 13,063 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN | 5,323 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_CN
Taiwan [Member] |  |  |
Total net revenues: |  |  |
Total net revenues | 19,790 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_TW | 9,645 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_TW | 16,757 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = country_TW
Other [Member] |  |  |
Total net revenues: |  |  |
Total net revenues | $ 40,447 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = nano_OtherCountriesMember | $ 39,707 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = nano_OtherCountriesMember | $ 36,435 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = nano_OtherCountriesMember

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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