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| 0001104485-16-000049-index.html | 2016-03-03 13:05:46 | |
| 0001104485-16-000049.txt | 2016-03-03 13:05:46 | |
 0001104485-16-000049-xbrl.zip | 219146 | 2016-03-03 13:05:46 |
| exhibit10-18.htm | 31836 | 2016-03-03 13:05:46 |
| exhibit12.htm | 45814 | 2016-03-03 13:05:46 |
| exhibit23-1.htm | 2751 | 2016-03-03 13:05:46 |
| exhibit23-2.htm | 2350 | 2016-03-03 13:05:46 |
| exhibit23-3.htm | 3216 | 2016-03-03 13:05:46 |
| exhibit31-1.htm | 13007 | 2016-03-03 13:05:46 |
| exhibit31-2.htm | 12835 | 2016-03-03 13:05:46 |
| exhibit32-1.htm | 7572 | 2016-03-03 13:05:46 |
| exhibit99-1.htm | 91894 | 2016-03-03 13:05:46 |
| FilingSummary.xml | 33080 | 2016-03-03 13:05:46 |
| Financial_Report.xlsx | 94784 | 2016-03-03 13:05:46 |
 image0.jpg | 65182 | 2016-03-03 13:05:46 |
| nog-20151231.xml | 1608362 | 2016-03-03 13:05:46 |
| nog-20151231.xsd | 61155 | 2016-03-03 13:05:46 |
| nog-20151231_cal.xml | 85970 | 2016-03-03 13:05:46 |
| nog-20151231_def.xml | 292733 | 2016-03-03 13:05:46 |
| nog-20151231_lab.xml | 924171 | 2016-03-03 13:05:46 |
| nog-20151231_pre.xml | 518449 | 2016-03-03 13:05:46 |
| nog10k.htm | 2621945 | 2016-03-03 13:05:46 |
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| report.css | 2767 | 2016-03-03 13:05:46 |
| Show.js | 1410 | 2016-03-03 13:05:46 |