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| 0001564590-17-008985-index.html | 2017-05-05 11:30:29 | |
| 0001564590-17-008985.txt | 2017-05-05 11:30:29 | |
 0001564590-17-008985-xbrl.zip | 159956 | 2017-05-05 11:30:29 |
| FilingSummary.xml | 26647 | 2017-05-05 11:30:29 |
| Financial_Report.xlsx | 66891 | 2017-05-05 11:30:29 |
| navg-10q_20170331.htm | 5099150 | 2017-05-05 11:30:29 |
| navg-20170331.xml | 4319146 | 2017-05-05 11:30:29 |
| navg-20170331.xsd | 36869 | 2017-05-05 11:30:29 |
| navg-20170331_cal.xml | 78183 | 2017-05-05 11:30:29 |
| navg-20170331_def.xml | 120655 | 2017-05-05 11:30:29 |
| navg-20170331_lab.xml | 334143 | 2017-05-05 11:30:29 |
| navg-20170331_pre.xml | 276584 | 2017-05-05 11:30:29 |
| navg-ex111_9.htm | 46200 | 2017-05-05 11:30:29 |
| navg-ex311_6.htm | 17969 | 2017-05-05 11:30:29 |
| navg-ex312_7.htm | 17972 | 2017-05-05 11:30:29 |
| navg-ex321_10.htm | 8051 | 2017-05-05 11:30:29 |
| navg-ex322_8.htm | 8057 | 2017-05-05 11:30:29 |
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| report.css | 2767 | 2017-05-05 11:30:29 |
| Show.js | 1410 | 2017-05-05 11:30:29 |