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| 0001564590-16-018228-index.html | 2016-05-06 14:39:21 | |
| 0001564590-16-018228.txt | 2016-05-06 14:39:21 | |
 0001564590-16-018228-xbrl.zip | 139539 | 2016-05-06 14:39:21 |
| FilingSummary.xml | 22017 | 2016-05-06 14:39:21 |
| Financial_Report.xlsx | 54622 | 2016-05-06 14:39:21 |
| navg-10q_20160331.htm | 4553747 | 2016-05-06 14:39:21 |
| navg-20160331.xml | 3709361 | 2016-05-06 14:39:21 |
| navg-20160331.xsd | 32782 | 2016-05-06 14:39:21 |
| navg-20160331_cal.xml | 70988 | 2016-05-06 14:39:21 |
| navg-20160331_def.xml | 115645 | 2016-05-06 14:39:21 |
| navg-20160331_lab.xml | 303105 | 2016-05-06 14:39:21 |
| navg-20160331_pre.xml | 246337 | 2016-05-06 14:39:21 |
| navg-ex111_10.htm | 42195 | 2016-05-06 14:39:21 |
| navg-ex311_6.htm | 17969 | 2016-05-06 14:39:21 |
| navg-ex312_7.htm | 17929 | 2016-05-06 14:39:21 |
| navg-ex321_9.htm | 8049 | 2016-05-06 14:39:21 |
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| report.css | 2767 | 2016-05-06 14:39:21 |
| Show.js | 1410 | 2016-05-06 14:39:21 |