Annual report pursuant to Section 13 and 15(d)

RELATED PARTY TRANSACTIONS (Details)

v2.4.1.9
RELATED PARTY TRANSACTIONS (Details) (USD $)
In Thousands, unless otherwise specified
0 Months Ended
Dec. 09, 2008
Dec. 31, 2014
Dec. 31, 2013
Executives      
Related Party Transactions      
Cash surrender value of split-dollar life insurance policies   $ 48us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ExecutiveOfficerMember
$ 48us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ExecutiveOfficerMember
Mr. Eugene Hughes | Retirement and Consulting Agreement      
Related Party Transactions      
Initial term of agreement 8 years    
Annual compensation for the first two years of service 215natr_RelatedPartyTransactionAnnualCompensationForSpecifiedServicePeriod
/ us-gaap_FinancialInstrumentAxis
= natr_RetirementAndConsultingAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= natr_FormerMemberOfBoardOfDirectorsAndShareholderMember
   
Specified service period for annual compensation 2 years    
Annual compensation for remainder of the initial term $ 100natr_RelatedPartyTransactionAnnualCompensationForRemainderOfInitialTermOfAgreement
/ us-gaap_FinancialInstrumentAxis
= natr_RetirementAndConsultingAgreementMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= natr_FormerMemberOfBoardOfDirectorsAndShareholderMember