Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001084991-22-000121-index-headers.html | 2022-11-15 19:36:38 | |
| 0001084991-22-000121-index.html | 2022-11-15 19:36:38 | |
| 0001084991-22-000121.txt | 2022-11-15 19:36:38 | |
 0001084991-22-000121-xbrl.zip | 10559 | 2022-11-15 19:36:38 |
| FilingSummary.xml | 1612 | 2022-11-15 19:36:38 |
| Financial_Report.xlsx | 5702 | 2022-11-15 19:36:38 |
| MetaLinks.json | 16536 | 2022-11-15 19:36:38 |
| ngs-20221115.htm | 33654 | 2022-11-15 19:36:38 |
| ngs-20221115.xsd | 1903 | 2022-11-15 19:36:38 |
| ngs-20221115_htm.xml | 10573 | 2022-11-15 19:36:38 |
| ngs-20221115_lab.xml | 24137 | 2022-11-15 19:36:38 |
| ngs-20221115_pre.xml | 12513 | 2022-11-15 19:36:38 |
| R1.htm | 38109 | 2022-11-15 19:36:38 |
| report.css | 2766 | 2022-11-15 19:36:38 |
| Show.js | 1084 | 2022-11-15 19:36:38 |