Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-239705-index-headers.html | 2019-09-06 12:18:13 | |
| 0001193125-19-239705-index.html | 2019-09-06 12:18:13 | |
| 0001193125-19-239705.txt | 2019-09-06 12:18:13 | |
 0001193125-19-239705-xbrl.zip | 24101 | 2019-09-06 12:18:13 |
| d755633d497.htm | 1133 | 2019-09-06 12:18:13 |
| FilingSummary.xml | 3576 | 2019-09-06 12:18:13 |
| Financial_Report.xlsx | 7876 | 2019-09-06 12:18:13 |
 g755633g0906040642130.jpg | 2194 | 2019-09-06 12:18:13 |
| gst-20190816.xml | 11919 | 2019-09-06 12:18:13 |
| gst-20190816.xsd | 4088 | 2019-09-06 12:18:13 |
| gst-20190816_def.xml | 92197 | 2019-09-06 12:18:13 |
| gst-20190816_lab.xml | 127984 | 2019-09-06 12:18:13 |
| gst-20190816_pre.xml | 79029 | 2019-09-06 12:18:13 |
| R1.htm | 18245 | 2019-09-06 12:18:13 |
| R2.htm | 6626 | 2019-09-06 12:18:13 |
| R3.htm | 18234 | 2019-09-06 12:18:13 |
| R4.htm | 7480 | 2019-09-06 12:18:13 |
| report.css | 2767 | 2019-09-06 12:18:13 |
| Show.js | 1085 | 2019-09-06 12:18:13 |