Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-19-002177-index-headers.html | 2019-01-04 11:46:42 | |
| 0001193125-19-002177-index.html | 2019-01-04 11:46:42 | |
| 0001193125-19-002177.txt | 2019-01-04 11:46:42 | |
 0001193125-19-002177-xbrl.zip | 23299 | 2019-01-04 11:46:42 |
| d670669d497.htm | 1129 | 2019-01-04 11:46:42 |
| FilingSummary.xml | 3480 | 2019-01-04 11:46:42 |
| Financial_Report.xlsx | 7987 | 2019-01-04 11:46:42 |
 g670669dsp01.jpg | 2678 | 2019-01-04 11:46:42 |
| gst-20181214.xml | 9129 | 2019-01-04 11:46:42 |
| gst-20181214.xsd | 3942 | 2019-01-04 11:46:42 |
| gst-20181214_def.xml | 91427 | 2019-01-04 11:46:42 |
| gst-20181214_lab.xml | 127983 | 2019-01-04 11:46:42 |
| gst-20181214_pre.xml | 78792 | 2019-01-04 11:46:42 |
| R1.htm | 18246 | 2019-01-04 11:46:42 |
| R2.htm | 5065 | 2019-01-04 11:46:42 |
| R3.htm | 15099 | 2019-01-04 11:46:42 |
| R4.htm | 7482 | 2019-01-04 11:46:42 |
| report.css | 2767 | 2019-01-04 11:46:42 |
| Show.js | 1085 | 2019-01-04 11:46:42 |