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v3.10.0.1

Nature of Business, Basis of Presentation and Significant Accounting Policies - Estimated Useful Lives of Intangible Assets (Details) | 12 Months Ended
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Dec. 29, 2018
Minimum [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 2 years
Maximum [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 15 years
Developed technology [Member] | Minimum [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 9 years
Developed technology [Member] | Maximum [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 10 years
Customer relationships [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 9 years
Trade name [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 15 years
Backlog [Member] | Maximum [Member] |
Accounting Policies [Line Items] |
Finite-lived intangibles estimated lives | 1 year

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- Definition Accounting policies. + References No definition available. + Details
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Namespace Prefix: | nano_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=nano_OrderBacklogMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |