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Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Accounting Policies [Abstract] | ||
| Inventory Valuation Reserves | $ 18,000us-gaap_InventoryValuationReserves | $ 0us-gaap_InventoryValuationReserves |
| Goodwill, Impairment Loss | 0us-gaap_GoodwillImpairmentLoss | 0us-gaap_GoodwillImpairmentLoss |
| Foreign Currency Transaction Gain (Loss), Unrealized | $ 202,000us-gaap_ForeignCurrencyTransactionGainLossUnrealized | $ 32,000us-gaap_ForeignCurrencyTransactionGainLossUnrealized |
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 88,097us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 2,234,994us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
| Furniture and Fixtures [Member] | Maximum [Member] | ||
| Accounting Policies [Abstract] | ||
| Property, Plant and Equipment, Useful Life | 7 years | |
| Furniture and Fixtures [Member] | Minimum [Member] | ||
| Accounting Policies [Abstract] | ||
| Property, Plant and Equipment, Useful Life | 5 years | |
| Office Equipment [Member] | Maximum [Member] | ||
| Accounting Policies [Abstract] | ||
| Property, Plant and Equipment, Useful Life | 5 years | |
| Office Equipment [Member] | Minimum [Member] | ||
| Accounting Policies [Abstract] | ||
| Property, Plant and Equipment, Useful Life | 3 years | |
| Long-Term Incentive Plan, Payment Commencing in February 2021 and Ending in December 2023 [Member] | ||
| Accounting Policies [Abstract] | ||
| Deferred Compensation, Reward Payable, Equal Consecutive Monthly Installments |
35nhtc_DeferredCompensationRewardPayableEqualConsecutiveMonthlyInstallments / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = nhtc_LongTermIncentivePlanPaymentCommencingInFebruary2021AndEndingInDecember2023Member |
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| Deferred Compensation, Reward Payable, Percentage |
50.00%nhtc_DeferredCompensationRewardPaymentPercentage / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = nhtc_LongTermIncentivePlanPaymentCommencingInFebruary2021AndEndingInDecember2023Member |
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| Long-Term Incentive Plan, Payment Commencing in February of the Calendar Year Immediately Following the Conclusion of the Performance Period [Member] | ||
| Accounting Policies [Abstract] | ||
| Deferred Compensation, Reward Payable, Equal Consecutive Monthly Installments |
35nhtc_DeferredCompensationRewardPayableEqualConsecutiveMonthlyInstallments / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = nhtc_LongTermIncentivePlanPaymentCommencingInFebruaryOfTheCalendarYearImmediatelyFollowingTheConclusionOfThePerformancePeriodMember |
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| Deferred Compensation, Reward Payable, Percentage |
50.00%nhtc_DeferredCompensationRewardPaymentPercentage / us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis = nhtc_LongTermIncentivePlanPaymentCommencingInFebruaryOfTheCalendarYearImmediatelyFollowingTheConclusionOfThePerformancePeriodMember |
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| X | ||||||||||
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- Definition
Represents the number of equal consecutive monthly installments of deferred compensation award payable. No definition available.
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- Definition
Represents the percentage of deferred compensation award payable. No definition available.
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- Details
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- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of valuation reserve for inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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