Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details)

v2.4.1.9
NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details) (Belarusian subsidiary, USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Belarusian subsidiary
      
Classification of Venezuela and Belarus as a Highly Inflationary Economy and Devaluation of Its Currencies      
Net sales revenue as a percent of consolidated net sales revenue 2.40%natr_NetSalesRevenueAsPercentageOfConsolidatedNetSalesRevenue
/ dei_LegalEntityAxis
= natr_BelarusianSubsidiariesMember 		2.20%natr_NetSalesRevenueAsPercentageOfConsolidatedNetSalesRevenue
/ dei_LegalEntityAxis
= natr_BelarusianSubsidiariesMember 		1.80%natr_NetSalesRevenueAsPercentageOfConsolidatedNetSalesRevenue
/ dei_LegalEntityAxis
= natr_BelarusianSubsidiariesMember
Gains or losses from a re-measurement of the financial statements using official exchange rates $ 0us-gaap_TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease
/ dei_LegalEntityAxis
= natr_BelarusianSubsidiariesMember