It represent borrowing base per credit agreement.

No definition available.

Name:	nanx_BorrowingBasePerCreditAgreement
Namespace Prefix:	nanx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The multiple of accounts receivable available to be borrowed as defined in line of credit agreement.

+ References

No definition available.

+ Details

Name:	nanx_BorrowingCapacityAsMultipleOfAccountsReceivable
Namespace Prefix:	nanx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility maximum borrowing capacity as percentage of accounts receivable.

+ References

No definition available.

+ Details

Name:	nanx_LineOfCreditFacilityMaximumBorrowingCapacityAsPercentageOfAccountsReceivable
Namespace Prefix:	nanx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of business days the payment under the line of credit must be repaid of the advance, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	nanx_RepaymentTerms
Namespace Prefix:	nanx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

+ Details

Name:	us-gaap_Cash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Discussion of whether the debt instrument is secured or unsecured, and, if secured, a description of the collateral and guarantees required or provided.

+ References

+ Details

Name:	us-gaap_DebtInstrumentCollateral
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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+ Details

Name:	us-gaap_LinesOfCreditCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
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+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_TypeOfArrangementAxis=nanx_BusinessLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=nanx_BeachcorpLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=us-gaap_IndividuallyImmaterialCounterpartiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_TypeOfArrangementAxis=nanx_NewBusinessLoanAgreementMember
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Data Type:	na
Balance Type:
Period Type:

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Notes and Lines of Credit (Detail Narratives) $ in Thousands			1 Months Ended
	Mar. 22, 2019 USD ($) Number	Nov. 16, 2018 USD ($)	Mar. 31, 2015 USD ($)	Jul. 31, 2014 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Line of Credit						$ 300
Business Loan Agreement [Member] \| Beachcorp, LLC [Member]
Term loan		$ 500			$ 500
Fixed annual interest rate		8.25%
Maturity date		Dec. 31, 2020
Ownership percentage		47.00%
Term loan collateral		The Term Loan and Revolver Facility are secured by all the unencumbered assets of the Company and subordinated to Libertyville’s secured interest under the New Business Loan Agreement.
Borrowing base per the credit agreement		$ 192
Business Loan Agreement [Member] \| Beachcorp, LLC [Member] \| Asset-Based Revolving Loan Facility [Member]
Basis spread variable interest rate		3.00%
Variable interest rate basis		Prime rate
Line of credit facility, maximum borrowing capacity		$ 2
Facility, expiration date		Mar. 31, 2020
Term loan					$ 832
Letter of Credit [Member]
Letter of credit and related promissory note				$ 30
Basis spread variable interest rate				1.00%
Variable interest rate basis				Prime rate
Line of Credit [Member] \| Business Loan Agreement [Member] \| Libertyville [Member]
Basis spread variable interest rate			1.00%
Variable interest rate basis			Prime rate
Line of credit facility, maximum borrowing capacity			$ 300
Borrowing capacity as percentage of accounts receivable			75.00%
Facility, expiration date			Mar. 04, 2018
Line of Credit						$ 300
Repayment Terms			5 days
Line of Credit [Member] \| Business Loan Agreement [Member] \| Libertyville [Member] \| Greater than [Member]
Minimum amount of cash on hand before advance is given			$ 1,000
Line of Credit [Member] \| New Business Loan Agreement [Member] \| Subsequent Event [Member]
Basis spread variable interest rate	1.00%
Variable interest rate basis	Prime rate
Line of credit facility, maximum borrowing capacity	$ 500
Borrowing capacity as percentage of accounts receivable	75.00%
Borrowing capacity as multiple of accounts receivable \| Number	2
Minimum amount of cash on hand before advance is given	$ 500
Facility, expiration date	Apr. 04, 2020
Line of Credit	$ 500