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| 0001564590-18-011902-index.html | 2018-05-08 16:48:26 | |
| 0001564590-18-011902.txt | 2018-05-08 16:48:26 | |
 0001564590-18-011902-xbrl.zip | 189367 | 2018-05-08 16:48:26 |
| FilingSummary.xml | 30358 | 2018-05-08 16:48:26 |
| Financial_Report.xlsx | 81257 | 2018-05-08 16:48:26 |
| navg-10q_20180331.htm | 5080297 | 2018-05-08 16:48:26 |
| navg-20180331.xml | 4431283 | 2018-05-08 16:48:26 |
| navg-20180331.xsd | 47108 | 2018-05-08 16:48:26 |
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| report.css | 2767 | 2018-05-08 16:48:26 |
| Show.js | 1410 | 2018-05-08 16:48:26 |