401 (k) Profit-Sharing Plan (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
401(k) Profit-Sharing Plan (Textual) [Abstract]
Defined contribution plan employer matching contribution percent for three percent of employee contribution	100.00%
Defined contribution plan employer matching contribution percent for first compensation	3.00%
Defined contribution plan employer matching contribution percent for two percent of employee contribution	50.00%
Defined contribution plan employer matching contribution percent for next compensation	2.00%
Contributions under profit sharing plan	$ 107,060	$ 118,160

Defined contribution plan employer matching contribution amount.

No definition available.

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Defined contribution plan employer matching contribution percent for first compensation.

No definition available.

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Defined contribution plan employer matching contribution percent for next compensation.

No definition available.

Name:	nanx_DefinedContributionPlanEmployerMatchingContributionPercentForNextCompensation
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Data Type:	num:percentItemType
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Period Type:	duration

Defined contribution plan employer matching contribution percent for three percent of employee contribution.

No definition available.

Name:	nanx_DefinedContributionPlanEmployerMatchingContributionPercentForThreePercentOfEmployeeContribution
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Data Type:	num:percentItemType
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Defined contribution plan employer matching contribution percent for two percent of employee contribution.

No definition available.

Name:	nanx_DefinedContributionPlanEmployerMatchingContributionPercentForTwoPercentOfEmployeeContribution
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Data Type:	num:percentItemType
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