Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000912750-17-000003-index-headers.html | 2017-02-21 16:08:51 | |
| 0000912750-17-000003-index.html | 2017-02-21 16:08:51 | |
| 0000912750-17-000003.txt | 2017-02-21 16:08:51 | |
 0000912750-17-000003-xbrl.zip | 355612 | 2017-02-21 16:08:51 |
| a2016exhibit211.htm | 5750 | 2017-02-21 16:08:51 |
| a2016exhibit231.htm | 2747 | 2017-02-21 16:08:51 |
| a2016exhibit232.htm | 6046 | 2017-02-21 16:08:51 |
| a2016exhibit233.htm | 5665 | 2017-02-21 16:08:51 |
| a2016exhibit241.htm | 23426 | 2017-02-21 16:08:51 |
| a2016exhibit311.htm | 14571 | 2017-02-21 16:08:51 |
| a2016exhibit312.htm | 14732 | 2017-02-21 16:08:51 |
| a2016exhibit32.htm | 263515 | 2017-02-21 16:08:51 |
| a2016exhibit321.htm | 6720 | 2017-02-21 16:08:51 |
| a2016exhibit322.htm | 6687 | 2017-02-21 16:08:51 |
| a2016exhibit991.htm | 177538 | 2017-02-21 16:08:51 |
| a2016exhibit992.htm | 62986 | 2017-02-21 16:08:51 |
 boothbysignaturea01a05.jpg | 7809 | 2017-02-21 16:08:51 |
| FilingSummary.xml | 49582 | 2017-02-21 16:08:51 |
| Financial_Report.xlsx | 123798 | 2017-02-21 16:08:51 |
 larrymassarosignaturea01a04.jpg | 24616 | 2017-02-21 16:08:51 |
| nfx-20161231.xml | 3760481 | 2017-02-21 16:08:51 |
| nfx-20161231.xsd | 78348 | 2017-02-21 16:08:51 |
| nfx-20161231_cal.xml | 114044 | 2017-02-21 16:08:51 |
| nfx-20161231_def.xml | 416674 | 2017-02-21 16:08:51 |
| nfx-20161231_lab.xml | 1081257 | 2017-02-21 16:08:51 |
| nfx-20161231_pre.xml | 656650 | 2017-02-21 16:08:51 |
| nfx201610-k.htm | 4564813 | 2017-02-21 16:08:51 |
 piechartsa10.jpg | 42058 | 2017-02-21 16:08:51 |
 pwcsignaturestampa04.jpg | 10915 | 2017-02-21 16:08:51 |
| R1.htm | 28422 | 2017-02-21 16:08:51 |
| R10.htm | 21027 | 2017-02-21 16:08:51 |
| R11.htm | 6748 | 2017-02-21 16:08:51 |
| R12.htm | 221322 | 2017-02-21 16:08:51 |
| R13.htm | 204879 | 2017-02-21 16:08:51 |
| R14.htm | 143321 | 2017-02-21 16:08:51 |
| R15.htm | 17250 | 2017-02-21 16:08:51 |
| R16.htm | 136673 | 2017-02-21 16:08:51 |
| R17.htm | 22663 | 2017-02-21 16:08:51 |
| R18.htm | 34693 | 2017-02-21 16:08:51 |
| R19.htm | 40091 | 2017-02-21 16:08:51 |
| R2.htm | 89934 | 2017-02-21 16:08:51 |
| R20.htm | 59841 | 2017-02-21 16:08:51 |
| R21.htm | 13293 | 2017-02-21 16:08:51 |
| R22.htm | 61721 | 2017-02-21 16:08:51 |
| R23.htm | 157903 | 2017-02-21 16:08:51 |
| R24.htm | 12939 | 2017-02-21 16:08:51 |
| R25.htm | 99060 | 2017-02-21 16:08:51 |
| R26.htm | 159901 | 2017-02-21 16:08:51 |
| R27.htm | 26882 | 2017-02-21 16:08:51 |
| R28.htm | 22579 | 2017-02-21 16:08:51 |
| R29.htm | 59413 | 2017-02-21 16:08:51 |
| R3.htm | 23834 | 2017-02-21 16:08:51 |
| R30.htm | 5507 | 2017-02-21 16:08:51 |
| R31.htm | 218420 | 2017-02-21 16:08:51 |
| R32.htm | 18671 | 2017-02-21 16:08:51 |
| R33.htm | 211445 | 2017-02-21 16:08:51 |
| R34.htm | 199948 | 2017-02-21 16:08:51 |
| R35.htm | 47011 | 2017-02-21 16:08:51 |
| R36.htm | 16178 | 2017-02-21 16:08:51 |
| R37.htm | 133904 | 2017-02-21 16:08:51 |
| R38.htm | 21980 | 2017-02-21 16:08:51 |
| R39.htm | 33975 | 2017-02-21 16:08:51 |
| R4.htm | 88150 | 2017-02-21 16:08:51 |
| R40.htm | 28915 | 2017-02-21 16:08:51 |
| R41.htm | 59882 | 2017-02-21 16:08:51 |
| R42.htm | 59212 | 2017-02-21 16:08:51 |
| R43.htm | 146576 | 2017-02-21 16:08:51 |
| R44.htm | 96346 | 2017-02-21 16:08:51 |
| R45.htm | 201927 | 2017-02-21 16:08:51 |
| R46.htm | 25471 | 2017-02-21 16:08:51 |
| R47.htm | 19074 | 2017-02-21 16:08:51 |
| R48.htm | 58591 | 2017-02-21 16:08:51 |
| R49.htm | 33226 | 2017-02-21 16:08:51 |
| R5.htm | 15632 | 2017-02-21 16:08:51 |
| R50.htm | 5786 | 2017-02-21 16:08:51 |
| R51.htm | 15850 | 2017-02-21 16:08:51 |
| R52.htm | 7393 | 2017-02-21 16:08:51 |
| R53.htm | 55837 | 2017-02-21 16:08:51 |
| R54.htm | 60767 | 2017-02-21 16:08:51 |
| R55.htm | 13949 | 2017-02-21 16:08:51 |
| R56.htm | 44079 | 2017-02-21 16:08:51 |
| R57.htm | 69985 | 2017-02-21 16:08:51 |
| R58.htm | 28252 | 2017-02-21 16:08:51 |
| R59.htm | 10615 | 2017-02-21 16:08:51 |
| R6.htm | 5280 | 2017-02-21 16:08:51 |
| R60.htm | 117087 | 2017-02-21 16:08:51 |
| R61.htm | 21675 | 2017-02-21 16:08:51 |
| R62.htm | 12147 | 2017-02-21 16:08:51 |
| R63.htm | 102462 | 2017-02-21 16:08:51 |
| R64.htm | 22583 | 2017-02-21 16:08:51 |
| R65.htm | 18586 | 2017-02-21 16:08:51 |
| R66.htm | 33962 | 2017-02-21 16:08:51 |
| R67.htm | 69779 | 2017-02-21 16:08:51 |
| R68.htm | 48682 | 2017-02-21 16:08:51 |
| R69.htm | 25893 | 2017-02-21 16:08:51 |
| R7.htm | 85288 | 2017-02-21 16:08:51 |
| R70.htm | 14923 | 2017-02-21 16:08:51 |
| R71.htm | 114387 | 2017-02-21 16:08:51 |
| R72.htm | 100463 | 2017-02-21 16:08:51 |
| R73.htm | 13545 | 2017-02-21 16:08:51 |
| R74.htm | 10213 | 2017-02-21 16:08:51 |
| R75.htm | 49386 | 2017-02-21 16:08:51 |
| R76.htm | 19628 | 2017-02-21 16:08:51 |
| R77.htm | 21700 | 2017-02-21 16:08:51 |
| R78.htm | 48736 | 2017-02-21 16:08:51 |
| R79.htm | 75059 | 2017-02-21 16:08:51 |
| R8.htm | 69449 | 2017-02-21 16:08:51 |
| R80.htm | 14431 | 2017-02-21 16:08:51 |
| R81.htm | 40596 | 2017-02-21 16:08:51 |
| R82.htm | 63894 | 2017-02-21 16:08:51 |
| R83.htm | 6635 | 2017-02-21 16:08:51 |
| R9.htm | 55158 | 2017-02-21 16:08:51 |
| report.css | 2768 | 2017-02-21 16:08:51 |
| Show.js | 1411 | 2017-02-21 16:08:51 |
 stockholderreturn.jpg | 101515 | 2017-02-21 16:08:51 |