Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000024751-13-000026-index-headers.html | 2013-08-12 14:39:08 | |
| 0000024751-13-000026-index.html | 2013-08-12 14:39:08 | |
| 0000024751-13-000026.txt | 2013-08-12 14:39:08 | |
 0000024751-13-000026-xbrl.zip | 76915 | 2013-08-12 14:39:08 |
| cng10qfinal.htm | 210595 | 2013-08-12 14:39:08 |
| cnig-20130630.xml | 343617 | 2013-08-12 14:39:08 |
| cnig-20130630.xsd | 42719 | 2013-08-12 14:39:08 |
| cnig-20130630_cal.xml | 66774 | 2013-08-12 14:39:08 |
| cnig-20130630_def.xml | 89054 | 2013-08-12 14:39:08 |
| cnig-20130630_lab.xml | 284227 | 2013-08-12 14:39:08 |
| cnig-20130630_pre.xml | 203275 | 2013-08-12 14:39:08 |
| ex32.htm | 2108 | 2013-08-12 14:39:08 |
| exhibit311.htm | 4552 | 2013-08-12 14:39:08 |
| exhibit312.htm | 4506 | 2013-08-12 14:39:08 |
| FilingSummary.xml | 24808 | 2013-08-12 14:39:08 |
| Financial_Report.xls | 332957 | 2013-08-12 14:39:08 |
| R1.htm | 33899 | 2013-08-12 14:39:08 |
| R1.xml | 33527 | 2013-08-12 14:39:08 |
| R10.htm | 6148 | 2013-08-12 14:39:08 |
| R10.xml | 6226 | 2013-08-12 14:39:08 |
| R11.htm | 12544 | 2013-08-12 14:39:08 |
| R11.xml | 12696 | 2013-08-12 14:39:08 |
| R12.htm | 16827 | 2013-08-12 14:39:08 |
| R12.xml | 17760 | 2013-08-12 14:39:08 |
| R13.htm | 28470 | 2013-08-12 14:39:08 |
| R13.xml | 31001 | 2013-08-12 14:39:08 |
| R14.htm | 22537 | 2013-08-12 14:39:08 |
| R14.xml | 24879 | 2013-08-12 14:39:08 |
| R15.htm | 6151 | 2013-08-12 14:39:08 |
| R15.xml | 6206 | 2013-08-12 14:39:08 |
| R16.htm | 12981 | 2013-08-12 14:39:08 |
| R16.xml | 13261 | 2013-08-12 14:39:08 |
| R17.htm | 5492 | 2013-08-12 14:39:08 |
| R17.xml | 5585 | 2013-08-12 14:39:08 |
| R18.htm | 8621 | 2013-08-12 14:39:08 |
| R18.xml | 8693 | 2013-08-12 14:39:08 |
| R19.htm | 18722 | 2013-08-12 14:39:08 |
| R19.xml | 19912 | 2013-08-12 14:39:08 |
| R2.htm | 152055 | 2013-08-12 14:39:08 |
| R2.xml | 137553 | 2013-08-12 14:39:08 |
| R20.htm | 6589 | 2013-08-12 14:39:08 |
| R20.xml | 6639 | 2013-08-12 14:39:08 |
| R21.htm | 7830 | 2013-08-12 14:39:08 |
| R21.xml | 7515 | 2013-08-12 14:39:08 |
| R22.htm | 8092 | 2013-08-12 14:39:08 |
| R22.xml | 8247 | 2013-08-12 14:39:08 |
| R23.htm | 10954 | 2013-08-12 14:39:08 |
| R23.xml | 11464 | 2013-08-12 14:39:08 |
| R24.htm | 21060 | 2013-08-12 14:39:08 |
| R24.xml | 23172 | 2013-08-12 14:39:08 |
| R25.htm | 14420 | 2013-08-12 14:39:08 |
| R25.xml | 15465 | 2013-08-12 14:39:08 |
| R26.htm | 27444 | 2013-08-12 14:39:08 |
| R26.xml | 29473 | 2013-08-12 14:39:08 |
| R27.htm | 21476 | 2013-08-12 14:39:08 |
| R27.xml | 23604 | 2013-08-12 14:39:08 |
| R28.htm | 8438 | 2013-08-12 14:39:08 |
| R28.xml | 8724 | 2013-08-12 14:39:08 |
| R29.htm | 19905 | 2013-08-12 14:39:08 |
| R29.xml | 20498 | 2013-08-12 14:39:08 |
| R3.htm | 24802 | 2013-08-12 14:39:08 |
| R3.xml | 27161 | 2013-08-12 14:39:08 |
| R30.htm | 11462 | 2013-08-12 14:39:08 |
| R30.xml | 31019 | 2013-08-12 14:39:08 |
| R31.htm | 15221 | 2013-08-12 14:39:08 |
| R31.xml | 16293 | 2013-08-12 14:39:08 |
| R32.htm | 6616 | 2013-08-12 14:39:08 |
| R32.xml | 15646 | 2013-08-12 14:39:08 |
| R33.htm | 21842 | 2013-08-12 14:39:08 |
| R33.xml | 47844 | 2013-08-12 14:39:08 |
| R34.htm | 17602 | 2013-08-12 14:39:08 |
| R34.xml | 27066 | 2013-08-12 14:39:08 |
| R35.htm | 67741 | 2013-08-12 14:39:08 |
| R35.xml | 156997 | 2013-08-12 14:39:08 |
| R36.htm | 9907 | 2013-08-12 14:39:08 |
| R36.xml | 9132 | 2013-08-12 14:39:08 |
| R37.htm | 15055 | 2013-08-12 14:39:08 |
| R37.xml | 32681 | 2013-08-12 14:39:08 |
| R38.htm | 6323 | 2013-08-12 14:39:08 |
| R38.xml | 35336 | 2013-08-12 14:39:08 |
| R39.htm | 6183 | 2013-08-12 14:39:08 |
| R39.xml | 12379 | 2013-08-12 14:39:08 |
| R4.htm | 101958 | 2013-08-12 14:39:08 |
| R4.xml | 131063 | 2013-08-12 14:39:08 |
| R40.htm | 10762 | 2013-08-12 14:39:08 |
| R40.xml | 31580 | 2013-08-12 14:39:08 |
| R41.htm | 29744 | 2013-08-12 14:39:08 |
| R41.xml | 27711 | 2013-08-12 14:39:08 |
| R42.htm | 20134 | 2013-08-12 14:39:08 |
| R42.xml | 37493 | 2013-08-12 14:39:08 |
| R43.htm | 5265 | 2013-08-12 14:39:08 |
| R43.xml | 5453 | 2013-08-12 14:39:08 |
| R44.htm | 13664 | 2013-08-12 14:39:08 |
| R44.xml | 24176 | 2013-08-12 14:39:08 |
| R45.htm | 4908 | 2013-08-12 14:39:08 |
| R45.xml | 4896 | 2013-08-12 14:39:08 |
| R46.htm | 21741 | 2013-08-12 14:39:08 |
| R46.xml | 23462 | 2013-08-12 14:39:08 |
| R47.htm | 15279 | 2013-08-12 14:39:08 |
| R47.xml | 16205 | 2013-08-12 14:39:08 |
| R48.htm | 30164 | 2013-08-12 14:39:08 |
| R48.xml | 40011 | 2013-08-12 14:39:08 |
| R49.htm | 7909 | 2013-08-12 14:39:08 |
| R49.xml | 14915 | 2013-08-12 14:39:08 |
| R5.htm | 141465 | 2013-08-12 14:39:08 |
| R5.xml | 136632 | 2013-08-12 14:39:08 |
| R50.htm | 6560 | 2013-08-12 14:39:08 |
| R50.xml | 10331 | 2013-08-12 14:39:08 |
| R6.htm | 7141 | 2013-08-12 14:39:08 |
| R6.xml | 7230 | 2013-08-12 14:39:08 |
| R7.htm | 9186 | 2013-08-12 14:39:08 |
| R7.xml | 8610 | 2013-08-12 14:39:08 |
| R8.htm | 14321 | 2013-08-12 14:39:08 |
| R8.xml | 14525 | 2013-08-12 14:39:08 |
| R9.htm | 21421 | 2013-08-12 14:39:08 |
| R9.xml | 23601 | 2013-08-12 14:39:08 |
| report.css | 2740 | 2013-08-12 14:39:08 |
| Show.js | 1410 | 2013-08-12 14:39:08 |