Annual report pursuant to Section 13 and 15(d)

INTANGIBLE ASSETS (Details)

v2.4.1.9
INTANGIBLE ASSETS (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Intangible assets      
Net amount $ 704us-gaap_IntangibleAssetsNetExcludingGoodwill $ 853us-gaap_IntangibleAssetsNetExcludingGoodwill  
Product formulations      
Intangible assets      
Gross carrying amount 1,763us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
1,763us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
 
Accumulated amortization 1,059us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
910us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
 
Net amount 704us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
853us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
 
Amortization expense for intangible assets 149us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
149us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
149us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
Estimated Amortization Expense      
2015 149us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
2016 91us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
2017 91us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
2018 91us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
2019 91us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
Thereafter 191us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
Total $ 704us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= natr_ProductFormulationsMember
   
Product formulations | Minimum      
Intangible assets      
Estimated useful lives 9 years    
Product formulations | Maximum      
Intangible assets      
Estimated useful lives 15 years