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| 0000072207-18-000060-index.html | 2018-08-03 10:27:14 | |
| 0000072207-18-000060.txt | 2018-08-03 10:27:14 | |
 0000072207-18-000060-xbrl.zip | 379082 | 2018-08-03 10:27:14 |
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| nbl-20180630x10q_htm.xml | 3463237 | 2018-08-03 10:27:14 |
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| report.css | 2767 | 2018-08-03 10:27:14 |
| Show.js | 1410 | 2018-08-03 10:27:14 |