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| 0000275053-20-000034-index.html | 2020-08-06 16:13:58 | |
| 0000275053-20-000034.txt | 2020-08-06 16:13:58 | |
 0000275053-20-000034-xbrl.zip | 334808 | 2020-08-06 16:13:58 |
| FilingSummary.xml | 24579 | 2020-08-06 16:13:58 |
| Financial_Report.xlsx | 64250 | 2020-08-06 16:13:58 |
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| natr-20200630.htm | 1931639 | 2020-08-06 16:13:58 |
| natr-20200630.xsd | 36394 | 2020-08-06 16:13:58 |
| natr-20200630_cal.xml | 66991 | 2020-08-06 16:13:58 |
| natr-20200630_def.xml | 170652 | 2020-08-06 16:13:58 |
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| natr-20200630_htm.xml | 1405727 | 2020-08-06 16:13:58 |
| natr-20200630_lab.xml | 510420 | 2020-08-06 16:13:58 |
| natr-20200630_pre.xml | 299670 | 2020-08-06 16:13:58 |
| natr2020630-ex311.htm | 17333 | 2020-08-06 16:13:58 |
| natr2020630-ex312.htm | 17336 | 2020-08-06 16:13:58 |
| natr2020630-ex321.htm | 8119 | 2020-08-06 16:13:58 |
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| R9.htm | 14593 | 2020-08-06 16:13:58 |
| report.css | 2767 | 2020-08-06 16:13:58 |
| Show.js | 1085 | 2020-08-06 16:13:58 |