Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001387131-23-003227-index-headers.html | 2023-03-09 16:18:15 | |
| 0001387131-23-003227-index.html | 2023-03-09 16:18:15 | |
| 0001387131-23-003227.txt | 2023-03-09 16:18:15 | |
 0001387131-23-003227-xbrl.zip | 452773 | 2023-03-09 16:18:15 |
| ex99-a1.htm | 36423 | 2023-03-09 16:18:15 |
| ex99-a2.htm | 20130 | 2023-03-09 16:18:15 |
| ex99-b.htm | 6213 | 2023-03-09 16:18:15 |
| ex99-c.htm | 6060 | 2023-03-09 16:18:15 |
| FilingSummary.xml | 2005 | 2023-03-09 16:18:15 |
| gnt-20221231.xsd | 14251 | 2023-03-09 16:18:15 |
| gnt-20221231_def.xml | 22841 | 2023-03-09 16:18:15 |
| gnt-20221231_lab.xml | 33531 | 2023-03-09 16:18:15 |
| gnt-20221231_pre.xml | 21579 | 2023-03-09 16:18:15 |
| gnt-ncsr_123122.htm | 2231447 | 2023-03-09 16:18:15 |
| gnt-ncsr_123122_htm.xml | 727746 | 2023-03-09 16:18:15 |
 gntncsr123122001.jpg | 6062 | 2023-03-09 16:18:15 |
 gntncsr123122002.jpg | 6001 | 2023-03-09 16:18:15 |
 gntncsr123122003.jpg | 48407 | 2023-03-09 16:18:15 |
 gntncsr123122004.jpg | 171920 | 2023-03-09 16:18:15 |
| MetaLinks.json | 126307 | 2023-03-09 16:18:15 |
| R1.htm | 988850 | 2023-03-09 16:18:15 |
| report.css | 2767 | 2023-03-09 16:18:15 |
| Show.js | 1085 | 2023-03-09 16:18:15 |