Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001640334-19-001829-index-headers.html | 2019-09-11 19:20:57 | |
| 0001640334-19-001829-index.html | 2019-09-11 19:20:57 | |
| 0001640334-19-001829.txt | 2019-09-11 19:20:57 | |
 0001640334-19-001829-xbrl.zip | 68521 | 2019-09-11 19:20:57 |
| FilingSummary.xml | 15245 | 2019-09-11 19:20:57 |
| Financial_Report.xlsx | 38160 | 2019-09-11 19:20:57 |
| gstx-20190630.xml | 249999 | 2019-09-11 19:20:57 |
| gstx-20190630.xsd | 21795 | 2019-09-11 19:20:57 |
| gstx-20190630_cal.xml | 10625 | 2019-09-11 19:20:57 |
| gstx-20190630_def.xml | 67984 | 2019-09-11 19:20:57 |
| gstx-20190630_lab.xml | 172341 | 2019-09-11 19:20:57 |
| gstx-20190630_pre.xml | 152348 | 2019-09-11 19:20:57 |
| gstx_10q.htm | 332987 | 2019-09-11 19:20:57 |
| gstx_ex311.htm | 7556 | 2019-09-11 19:20:57 |
| gstx_ex312.htm | 7519 | 2019-09-11 19:20:57 |
| gstx_ex321.htm | 3503 | 2019-09-11 19:20:57 |
| R1.htm | 27727 | 2019-09-11 19:20:57 |
| R10.htm | 10263 | 2019-09-11 19:20:57 |
| R11.htm | 7765 | 2019-09-11 19:20:57 |
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| R14.htm | 4767 | 2019-09-11 19:20:57 |
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| R16.htm | 59649 | 2019-09-11 19:20:57 |
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| R19.htm | 7674 | 2019-09-11 19:20:57 |
| R2.htm | 60205 | 2019-09-11 19:20:57 |
| R20.htm | 13754 | 2019-09-11 19:20:57 |
| R21.htm | 5402 | 2019-09-11 19:20:57 |
| R22.htm | 70061 | 2019-09-11 19:20:57 |
| R23.htm | 49327 | 2019-09-11 19:20:57 |
| R24.htm | 18332 | 2019-09-11 19:20:57 |
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| R3.htm | 20389 | 2019-09-11 19:20:57 |
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| R5.htm | 47206 | 2019-09-11 19:20:57 |
| R6.htm | 69450 | 2019-09-11 19:20:57 |
| R7.htm | 17807 | 2019-09-11 19:20:57 |
| R8.htm | 29016 | 2019-09-11 19:20:57 |
| R9.htm | 12879 | 2019-09-11 19:20:57 |
| report.css | 2767 | 2019-09-11 19:20:57 |
| Show.js | 1085 | 2019-09-11 19:20:57 |