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|---|---|---|
 0001674796-18-000005-index-headers.html | 2018-04-02 16:20:18 | |
| 0001674796-18-000005-index.html | 2018-04-02 16:20:18 | |
| 0001674796-18-000005.txt | 2018-04-02 16:20:18 | |
 0001674796-18-000005-xbrl.zip | 30038 | 2018-04-02 16:20:18 |
| exhibit31-1.htm | 8205 | 2018-04-02 16:20:18 |
| exhibit31-2.htm | 8189 | 2018-04-02 16:20:18 |
| exhibit32-1.htm | 4462 | 2018-04-02 16:20:18 |
| exhibit32-2.htm | 4496 | 2018-04-02 16:20:18 |
| FilingSummary.xml | 22392 | 2018-04-02 16:20:18 |
| Financial_Report.xlsx | 30694 | 2018-04-02 16:20:18 |
| hstc-20171231.xml | 105325 | 2018-04-02 16:20:18 |
| hstc-20171231.xsd | 18293 | 2018-04-02 16:20:18 |
| hstc-20171231_cal.xml | 15367 | 2018-04-02 16:20:18 |
| hstc-20171231_def.xml | 18996 | 2018-04-02 16:20:18 |
| hstc-20171231_lab.xml | 79512 | 2018-04-02 16:20:18 |
| hstc-20171231_pre.xml | 74258 | 2018-04-02 16:20:18 |
| hstc10k2017.htm | 274174 | 2018-04-02 16:20:18 |
 hstc10k20172.gif | 858122 | 2018-04-02 16:20:18 |
| R1.htm | 29806 | 2018-04-02 16:20:18 |
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| R9.htm | 9426 | 2018-04-02 16:20:18 |
| report.css | 2767 | 2018-04-02 16:20:18 |
| Show.js | 1410 | 2018-04-02 16:20:18 |