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|---|---|---|
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| 0000950123-11-015603-index.html | 2011-02-18 14:26:30 | |
| 0000950123-11-015603.txt | 2011-02-18 14:26:30 | |
 0000950123-11-015603-xbrl.zip | 109033 | 2011-02-18 14:26:30 |
 c11654c1165401.gif | 12460 | 2011-02-18 14:26:30 |
| c11654e10vk.htm | 2119513 | 2011-02-18 14:26:30 |
| c11654exv11w1.htm | 8929 | 2011-02-18 14:26:30 |
| c11654exv21w1.htm | 4927 | 2011-02-18 14:26:30 |
| c11654exv23w1.htm | 2257 | 2011-02-18 14:26:30 |
| c11654exv31w1.htm | 9097 | 2011-02-18 14:26:30 |
| c11654exv31w2.htm | 9131 | 2011-02-18 14:26:30 |
| c11654exv32w1.htm | 3957 | 2011-02-18 14:26:30 |
| c11654exv32w2.htm | 3793 | 2011-02-18 14:26:30 |
| defnref.xml | 30147 | 2011-02-18 14:26:30 |
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| Financial_Report.xls | 1000454 | 2011-02-18 14:26:30 |
| navg-20101231.xml | 1298838 | 2011-02-18 14:26:30 |
| navg-20101231.xsd | 21753 | 2011-02-18 14:26:30 |
| navg-20101231_cal.xml | 51145 | 2011-02-18 14:26:30 |
| navg-20101231_def.xml | 11545 | 2011-02-18 14:26:30 |
| navg-20101231_lab.xml | 181956 | 2011-02-18 14:26:30 |
| navg-20101231_pre.xml | 111584 | 2011-02-18 14:26:30 |
| R1.xml | 49492 | 2011-02-18 14:26:30 |
| R10.xml | 31064 | 2011-02-18 14:26:30 |
| R11.xml | 178724 | 2011-02-18 14:26:30 |
| R12.xml | 399786 | 2011-02-18 14:26:30 |
| R13.xml | 49144 | 2011-02-18 14:26:30 |
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| R18.xml | 7523 | 2011-02-18 14:26:30 |
| R19.xml | 16518 | 2011-02-18 14:26:30 |
| R2.xml | 96596 | 2011-02-18 14:26:30 |
| R20.xml | 56905 | 2011-02-18 14:26:30 |
| R21.xml | 11343 | 2011-02-18 14:26:30 |
| R22.xml | 65531 | 2011-02-18 14:26:30 |
| R23.xml | 11268 | 2011-02-18 14:26:30 |
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| R27.xml | 56492 | 2011-02-18 14:26:30 |
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| R4.xml | 93886 | 2011-02-18 14:26:30 |
| R5.xml | 171338 | 2011-02-18 14:26:30 |
| R6.xml | 48962 | 2011-02-18 14:26:30 |
| R7.xml | 16485 | 2011-02-18 14:26:30 |
| R8.xml | 141331 | 2011-02-18 14:26:30 |
| R9.xml | 40343 | 2011-02-18 14:26:30 |