Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-18-153797-index-headers.html | 2018-05-07 09:58:40 | |
| 0001193125-18-153797-index.html | 2018-05-07 09:58:40 | |
| 0001193125-18-153797.txt | 2018-05-07 09:58:40 | |
 0001193125-18-153797-xbrl.zip | 23079 | 2018-05-07 09:58:40 |
| d571847d497.htm | 1130 | 2018-05-07 09:58:40 |
| FilingSummary.xml | 3552 | 2018-05-07 09:58:40 |
| Financial_Report.xlsx | 8199 | 2018-05-07 09:58:40 |
 g571847g0504220850834.jpg | 2194 | 2018-05-07 09:58:40 |
| gst-20180416.xml | 11227 | 2018-05-07 09:58:40 |
| gst-20180416.xsd | 5326 | 2018-05-07 09:58:40 |
| gst-20180416_def.xml | 87326 | 2018-05-07 09:58:40 |
| gst-20180416_lab.xml | 128238 | 2018-05-07 09:58:40 |
| gst-20180416_pre.xml | 76507 | 2018-05-07 09:58:40 |
| R1.htm | 16187 | 2018-05-07 09:58:40 |
| R2.htm | 5838 | 2018-05-07 09:58:40 |
| R3.htm | 16864 | 2018-05-07 09:58:40 |
| R4.htm | 7480 | 2018-05-07 09:58:40 |
| report.css | 2767 | 2018-05-07 09:58:40 |
| Show.js | 1410 | 2018-05-07 09:58:40 |