XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Accounts Receivable - Textual (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 26, 2016 | Mar. 28, 2015 | Dec. 26, 2015
Accounts Receivable (Additional Textual) [Abstract] |  |  |
Sold receivables amount | $ 14,200,000 | $ 1,100,000 |
Gains or losses on sale of accounts receivables | 0 | $ 0 |
Due from unrelated third parties | $ 0 |  | $ 0
Minimum [Member] |  |  |
Accounts Receivable (Textual) [Abstract] |  |  |
Administrative fees as well as interest percent | 0.82% |  |
Maximum [Member] |  |  |
Accounts Receivable (Textual) [Abstract] |  |  |
Administrative fees as well as interest percent | 1.68% |  |

X
- Definition Accounts receivable. + References No definition available. + Details
Name: | nano_AccountsReceivableTextualAbstract
Namespace Prefix: | nano_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Administrative fees and interest percent. + References No definition available. + Details
Name: | nano_AdministrativeFeesAndInterestPercent
Namespace Prefix: | nano_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Due from unrelated third parties. + References No definition available. + Details
Name: | nano_DueFromUnrelatedThirdParties
Namespace Prefix: | nano_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Proceeds from accounts receivable. + References No definition available. + Details
Name: | nano_ProceedsFromAccountsReceivable
Namespace Prefix: | nano_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountsReceivableAdditionalDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the net positive or negative amount derived from subtracting from net proceeds of sale, the carrying amounts, net of allocated reserves, of accounts receivable transferred to a third party in a transaction that qualifies for sales treatment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107425-111719 + Details
Name: | us-gaap_GainLossOnSaleOfAccountsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |