| Cover | May 05, 2021 | Dec. 31, 2020 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | May 5, 2021 | |
| Entity Registrant Name | NATURE’S SUNSHINE PRODUCTS, INC. | |
| Entity Incorporation, State or Country Code | UT | |
| Entity File Number | 001-34483 | |
| Entity Tax Identification Number | 87-0327982 | |
| Entity Address, Address Line One | 2901 West Bluegrass Blvd., Suite 100 | |
| Entity Address, City or Town | Lehi | |
| Entity Address, State or Province | UT | |
| Entity Address, Postal Zip Code | 84043 | |
| City Area Code | 801 | |
| Local Phone Number | 341-7900 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, no par value | |
| Trading Symbol | NATR | |
| Entity Emerging Growth Company | false | |
| Entity Central Index Key | 0000275053 | |
| Amendment Flag | false |
