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|---|---|---|
 0001193125-20-305422-index-headers.html | 2020-11-30 14:40:10 | |
| 0001193125-20-305422-index.html | 2020-11-30 14:40:10 | |
| 0001193125-20-305422.txt | 2020-11-30 14:40:10 | |
 0001193125-20-305422-xbrl.zip | 73458 | 2020-11-30 14:40:10 |
 BarChart1.png | 15788 | 2020-11-30 14:40:10 |
 BarChart2.png | 15842 | 2020-11-30 14:40:10 |
| d39752d497.htm | 1187 | 2020-11-30 14:40:10 |
| FilingSummary.xml | 4922 | 2020-11-30 14:40:10 |
 g39752dso01.jpg | 2907 | 2020-11-30 14:40:10 |
| gst-20201109.xml | 173220 | 2020-11-30 14:40:10 |
| gst-20201109.xsd | 14954 | 2020-11-30 14:40:10 |
| gst-20201109_cal.xml | 4346 | 2020-11-30 14:40:10 |
| gst-20201109_def.xml | 444880 | 2020-11-30 14:40:10 |
| gst-20201109_lab.xml | 171296 | 2020-11-30 14:40:10 |
| gst-20201109_pre.xml | 357942 | 2020-11-30 14:40:10 |
| R1.htm | 18253 | 2020-11-30 14:40:10 |
| R10.htm | 152001 | 2020-11-30 14:40:10 |
| R17.htm | 301223 | 2020-11-30 14:40:10 |
| R18.htm | 3937 | 2020-11-30 14:40:10 |
| R2.htm | 143821 | 2020-11-30 14:40:10 |
| R9.htm | 277613 | 2020-11-30 14:40:10 |
| report.css | 2767 | 2020-11-30 14:40:10 |
| Show.js | 1085 | 2020-11-30 14:40:10 |