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| 0001564590-17-015592-index.html | 2017-08-04 13:34:06 | |
| 0001564590-17-015592.txt | 2017-08-04 13:34:06 | |
 0001564590-17-015592-xbrl.zip | 193453 | 2017-08-04 13:34:06 |
| FilingSummary.xml | 28537 | 2017-08-04 13:34:06 |
| Financial_Report.xlsx | 74643 | 2017-08-04 13:34:06 |
| navg-10q_20170630.htm | 7589101 | 2017-08-04 13:34:06 |
| navg-20170630.xml | 5960092 | 2017-08-04 13:34:06 |
| navg-20170630.xsd | 38954 | 2017-08-04 13:34:06 |
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| report.css | 2767 | 2017-08-04 13:34:06 |
| Show.js | 1410 | 2017-08-04 13:34:06 |