Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001104485-20-000147-index-headers.html | 2020-07-10 16:43:54 | |
| 0001104485-20-000147-index.html | 2020-07-10 16:43:54 | |
| 0001104485-20-000147.txt | 2020-07-10 16:43:54 | |
 0001104485-20-000147-xbrl.zip | 28198 | 2020-07-10 16:43:54 |
| exhibit311-201910ka.htm | 12235 | 2020-07-10 16:43:54 |
| exhibit312-201910ka.htm | 12187 | 2020-07-10 16:43:54 |
| exhibit321-201910ka.htm | 9997 | 2020-07-10 16:43:54 |
| FilingSummary.xml | 1873 | 2020-07-10 16:43:54 |
| Financial_Report.xlsx | 6053 | 2020-07-10 16:43:54 |
| MetaLinks.json | 26271 | 2020-07-10 16:43:54 |
| nog-20191231.htm | 277660 | 2020-07-10 16:43:54 |
| nog-20191231.xsd | 2499 | 2020-07-10 16:43:54 |
| nog-20191231_cal.xml | 784 | 2020-07-10 16:43:54 |
| nog-20191231_def.xml | 1740 | 2020-07-10 16:43:54 |
| nog-20191231_htm.xml | 18199 | 2020-07-10 16:43:54 |
| nog-20191231_lab.xml | 36071 | 2020-07-10 16:43:54 |
| nog-20191231_pre.xml | 19227 | 2020-07-10 16:43:54 |
| R1.htm | 62461 | 2020-07-10 16:43:54 |
| report.css | 2767 | 2020-07-10 16:43:54 |
| Show.js | 1085 | 2020-07-10 16:43:54 |