Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-17-120839-index-headers.html | 2017-04-12 10:55:12 | |
| 0001193125-17-120839-index.html | 2017-04-12 10:55:12 | |
| 0001193125-17-120839.txt | 2017-04-12 10:55:12 | |
 0001193125-17-120839-xbrl.zip | 31484 | 2017-04-12 10:55:12 |
| d357107d497.htm | 1348 | 2017-04-12 10:55:12 |
| FilingSummary.xml | 3232 | 2017-04-12 10:55:12 |
| Financial_Report.xlsx | 8274 | 2017-04-12 10:55:12 |
 g357107logo.jpg | 4335 | 2017-04-12 10:55:12 |
| gst-20170324.xml | 35052 | 2017-04-12 10:55:12 |
| gst-20170324.xsd | 8112 | 2017-04-12 10:55:12 |
| gst-20170324_def.xml | 209125 | 2017-04-12 10:55:12 |
| gst-20170324_lab.xml | 137243 | 2017-04-12 10:55:12 |
| gst-20170324_pre.xml | 150215 | 2017-04-12 10:55:12 |
| R1.htm | 16189 | 2017-04-12 10:55:12 |
| R2.htm | 7097 | 2017-04-12 10:55:12 |
| R3.htm | 45193 | 2017-04-12 10:55:12 |
| R4.htm | 7480 | 2017-04-12 10:55:12 |
| report.css | 2767 | 2017-04-12 10:55:12 |
| Show.js | 1410 | 2017-04-12 10:55:12 |