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|---|---|---|
 0001193125-20-080532-index-headers.html | 2020-03-20 15:13:30 | |
| 0001193125-20-080532-index.html | 2020-03-20 15:13:30 | |
| 0001193125-20-080532.txt | 2020-03-20 15:13:30 | |
 0001193125-20-080532-xbrl.zip | 121940 | 2020-03-20 15:13:30 |
 BarChart1.png | 31012 | 2020-03-20 15:13:30 |
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 BarChart3.png | 6950 | 2020-03-20 15:13:30 |
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| d831711d485bpos.htm | 30695 | 2020-03-20 15:13:30 |
| FilingSummary.xml | 7955 | 2020-03-20 15:13:30 |
 g831711dsp3.jpg | 2889 | 2020-03-20 15:13:30 |
| gst-20200228.xml | 291768 | 2020-03-20 15:13:30 |
| gst-20200228.xsd | 25429 | 2020-03-20 15:13:30 |
| gst-20200228_cal.xml | 4756 | 2020-03-20 15:13:30 |
| gst-20200228_def.xml | 845674 | 2020-03-20 15:13:30 |
| gst-20200228_lab.xml | 175212 | 2020-03-20 15:13:30 |
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| R1.htm | 18249 | 2020-03-20 15:13:30 |
| R10.htm | 147121 | 2020-03-20 15:13:30 |
| R17.htm | 286275 | 2020-03-20 15:13:30 |
| R18.htm | 97667 | 2020-03-20 15:13:30 |
| R2.htm | 160606 | 2020-03-20 15:13:30 |
| R23.htm | 165144 | 2020-03-20 15:13:30 |
| R24.htm | 84812 | 2020-03-20 15:13:30 |
| R29.htm | 146803 | 2020-03-20 15:13:30 |
| R30.htm | 7481 | 2020-03-20 15:13:30 |
| R9.htm | 308627 | 2020-03-20 15:13:30 |
| report.css | 2767 | 2020-03-20 15:13:30 |
| Show.js | 1085 | 2020-03-20 15:13:30 |