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| 0000912061-17-000012-index.html | 2017-03-10 14:41:32 | |
| 0000912061-17-000012.txt | 2017-03-10 14:41:32 | |
 0000912061-17-000012-xbrl.zip | 278029 | 2017-03-10 14:41:32 |
| FilingSummary.xml | 30504 | 2017-03-10 14:41:32 |
| Financial_Report.xlsx | 68520 | 2017-03-10 14:41:32 |
| MetaLinks.json | 555725 | 2017-03-10 14:41:32 |
| nhtc-20161231.xsd | 40174 | 2017-03-10 14:41:32 |
| nhtc-20161231_cal.xml | 88128 | 2017-03-10 14:41:32 |
| nhtc-20161231_def.xml | 201780 | 2017-03-10 14:41:32 |
| nhtc-20161231_lab.xml | 622480 | 2017-03-10 14:41:32 |
| nhtc-20161231_pre.xml | 358245 | 2017-03-10 14:41:32 |
 nhtc201610-_chartx10870.jpg | 79374 | 2017-03-10 14:41:32 |
| nhtc20161231_10k.htm | 2072822 | 2017-03-10 14:41:32 |
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| q42016ex10-5.htm | 20179 | 2017-03-10 14:41:32 |
| q42016ex21-1.htm | 15735 | 2017-03-10 14:41:32 |
| q42016ex23-1.htm | 3458 | 2017-03-10 14:41:32 |
| q42016ex31-1.htm | 12393 | 2017-03-10 14:41:32 |
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| report.css | 2767 | 2017-03-10 14:41:32 |
| Show.js | 1410 | 2017-03-10 14:41:32 |