XML 61 R45.htm IDEA: XBRL DOCUMENT
v3.20.4

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Share-Based Compensation) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Time-based stock options | Maximum |  |
Share Based Compensation |  |
Vesting period | 48 months |
Performance based stock options operating income margins |  |
Share Based Compensation |  |
Operating income margin, one | 6.00% |
Operating income margin, two | 8.00% |
Operating income margin, three | 10.00% |
RSUs | Minimum |  |
Share Based Compensation |  |
Vesting period | 12 months |
RSUs | Maximum |  |
Share Based Compensation |  |
Vesting period | 36 months |
RSUs | 2012 Stock Incentive Plan |  |
Share Based Compensation |  |
Vesting period | 1 year | 1 year
RSUs | 2012 Stock Incentive Plan | Board of Directors |  |
Share Based Compensation |  |
Restriction period | 2 years |
RSUs | 2012 Stock Incentive Plan | Minimum |  |
Share Based Compensation |  |
Vesting period | 12 months |
RSUs | 2012 Stock Incentive Plan | Maximum |  |
Share Based Compensation |  |
Vesting period | 36 months |

X
- Definition Represents the restriction period before shares will be issued related to a share-based compensation plan. + References No definition available. + Details
Name: | natr_RestrictionPeriodForIssuanceOfShares
Namespace Prefix: | natr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the first operating margin percentage to be achieved for the vesting of stock options. + References No definition available. + Details
Name: | natr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOperatingMarginsOne
Namespace Prefix: | natr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the three operating margin percentage to be achieved for the vesting of stock options. + References No definition available. + Details
Name: | natr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOperatingMarginsThree
Namespace Prefix: | natr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the second operating margin percentage to be achieved for the vesting of stock options. + References No definition available. + Details
Name: | natr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOperatingMarginsTwo
Namespace Prefix: | natr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=natr_TimeBasedStockOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=natr_PerformanceBasedStockOptionsVestingUponAchievingOperatingIncomeMarginsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=natr_A2012IncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_DirectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |