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| 0000912061-19-000041-index.html | 2019-05-07 17:21:06 | |
| 0000912061-19-000041.txt | 2019-05-07 17:21:06 | |
 0000912061-19-000041-xbrl.zip | 174504 | 2019-05-07 17:21:06 |
| ex31-1.htm | 11297 | 2019-05-07 17:21:06 |
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| ex32-1.htm | 11829 | 2019-05-07 17:21:06 |
| FilingSummary.xml | 27554 | 2019-05-07 17:21:06 |
| Financial_Report.xlsx | 51807 | 2019-05-07 17:21:06 |
| MetaLinks.json | 445094 | 2019-05-07 17:21:06 |
| nhtc-20190331.xsd | 34553 | 2019-05-07 17:21:06 |
| nhtc-20190331_cal.xml | 69901 | 2019-05-07 17:21:06 |
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| nhtc-20190331_lab.xml | 507842 | 2019-05-07 17:21:06 |
| nhtc-20190331_pre.xml | 287122 | 2019-05-07 17:21:06 |
| nhtc20190331_10q.htm | 1005550 | 2019-05-07 17:21:06 |
| nhtc20190331_10q_htm.xml | 787378 | 2019-05-07 17:21:06 |
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| report.css | 2767 | 2019-05-07 17:21:06 |
| Show.js | 1085 | 2019-05-07 17:21:06 |