XML 45 R43.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Accounts Receivable - Textual (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 27, 2014 | Dec. 28, 2013
Accounts Receivable (Additional Textual) [Abstract] |  |
Sold receivables amount | $ 7,700,000 nano_ProceedsFromAccountsReceivable | $ 6,300,000 nano_ProceedsFromAccountsReceivable
Gains or losses on sale of accounts receivables |  | 0 us-gaap_GainLossOnSaleOfAccountsReceivable
Due from unrelated third parties | $ 0 nano_DueFromUnrelatedThirdParties | $ 0 nano_DueFromUnrelatedThirdParties
Minimum [Member] |  |
Accounts Receivable (Textual) [Abstract] |  |
Administrative fees as well as interest percent | 1.17%nano_AdministrativeFeesAndInterestPercent / us-gaap_RangeAxis = us-gaap_MinimumMember |
Maximum [Member] |  |
Accounts Receivable (Textual) [Abstract] |  |
Administrative fees as well as interest percent | 1.68%nano_AdministrativeFeesAndInterestPercent / us-gaap_RangeAxis = us-gaap_MaximumMember |

X
- Details
Name: | nano_AccountsReceivableAdditionalTextualAbstract
Namespace Prefix: | nano_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
- 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=13989330&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_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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