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Segment, Geographic, Product and Significant Customer Information - Customers More Than 10% of Accounts Receivable (Details) | Sep. 26, 2015 | Dec. 27, 2014
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Micron [Member] |  |
Customers accounted for 10% or more of total accounts receivable |  |
Customers accounted for 10% or more of total accounts receivable |  | 24.00%
Taiwan Semiconductor Manufacturing Company Limited [Member] |  |
Customers accounted for 10% or more of total accounts receivable |  |
Customers accounted for 10% or more of total accounts receivable | 28.00% | 20.00%
SK Hynix [Member] |  |
Customers accounted for 10% or more of total accounts receivable |  |
Customers accounted for 10% or more of total accounts receivable | 15.00% |
Samsung Electronics Co. Ltd. [Member] |  |
Customers accounted for 10% or more of total accounts receivable |  |
Customers accounted for 10% or more of total accounts receivable |  | 10.00%
Global Foundries [Member] |  |
Customers accounted for 10% or more of total accounts receivable |  |
Customers accounted for 10% or more of total accounts receivable |  | 10.00%
Toshiba [Member] |  |
Customers accounted for 10% or more of total accounts receivable |  |
Customers accounted for 10% or more of total accounts receivable | 13.00% |

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- Definition Entity wide accounts receivable major customer percentage. + References No definition available. + Details
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Data Type: | num:percentItemType
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Period Type: | instant

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- Definition Percentage of accounts receivable net. + 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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- Details
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Namespace Prefix: |
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- Details
Name: | us-gaap_MajorCustomersAxis=nano_TaiwanSemiconductorMfgCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_MajorCustomersAxis=nano_SkHynixMember
Namespace Prefix: |
Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_MajorCustomersAxis=nano_GlobalFoundriesMember
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- Details
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Balance Type: |
Period Type: |