Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001004155-12-000017-index-headers.html | 2012-02-22 08:05:06 | |
| 0001004155-12-000017-index.html | 2012-02-22 08:05:06 | |
| 0001004155-12-000017.txt | 2012-02-22 08:05:06 | |
 0001004155-12-000017-xbrl.zip | 423570 | 2012-02-22 08:05:06 |
| exhibit_10-1ae.htm | 19054 | 2012-02-22 08:05:06 |
| exhibit_10-1af.htm | 13239 | 2012-02-22 08:05:06 |
| exhibit_10-1aw.htm | 203645 | 2012-02-22 08:05:06 |
| exhibit_12.htm | 62412 | 2012-02-22 08:05:06 |
| exhibit_21.htm | 10376 | 2012-02-22 08:05:06 |
| exhibit_23.htm | 4256 | 2012-02-22 08:05:06 |
| exhibit_31.htm | 14199 | 2012-02-22 08:05:06 |
| exhibit_311.htm | 14362 | 2012-02-22 08:05:06 |
| exhibit_32.htm | 7498 | 2012-02-22 08:05:06 |
| exhibit_322.htm | 7439 | 2012-02-22 08:05:06 |
| FilingSummary.xml | 33727 | 2012-02-22 08:05:06 |
| Financial_Report.xls | 5213782 | 2012-02-22 08:05:06 |
| form_10-k.htm | 4851244 | 2012-02-22 08:05:06 |
| gas-20111231.xml | 5739394 | 2012-02-22 08:05:06 |
| gas-20111231.xsd | 128282 | 2012-02-22 08:05:06 |
| gas-20111231_cal.xml | 96140 | 2012-02-22 08:05:06 |
| gas-20111231_def.xml | 422118 | 2012-02-22 08:05:06 |
| gas-20111231_lab.xml | 1097991 | 2012-02-22 08:05:06 |
| gas-20111231_pre.xml | 794192 | 2012-02-22 08:05:06 |
 graphic_1.jpg | 42888 | 2012-02-22 08:05:06 |
 graphic_2.jpg | 32914 | 2012-02-22 08:05:06 |
 graphic_3.jpg | 32476 | 2012-02-22 08:05:06 |
| R1.htm | 34555 | 2012-02-22 08:05:06 |
| R10.htm | 17519 | 2012-02-22 08:05:06 |
| R11.htm | 693839 | 2012-02-22 08:05:06 |
| R12.htm | 107730 | 2012-02-22 08:05:06 |
| R13.htm | 337645 | 2012-02-22 08:05:06 |
| R14.htm | 175413 | 2012-02-22 08:05:06 |
| R15.htm | 295098 | 2012-02-22 08:05:06 |
| R16.htm | 245725 | 2012-02-22 08:05:06 |
| R17.htm | 129117 | 2012-02-22 08:05:06 |
| R18.htm | 51889 | 2012-02-22 08:05:06 |
| R19.htm | 96432 | 2012-02-22 08:05:06 |
| R2.htm | 256798 | 2012-02-22 08:05:06 |
| R20.htm | 157376 | 2012-02-22 08:05:06 |
| R21.htm | 86584 | 2012-02-22 08:05:06 |
| R22.htm | 260707 | 2012-02-22 08:05:06 |
| R23.htm | 60106 | 2012-02-22 08:05:06 |
| R24.htm | 209762 | 2012-02-22 08:05:06 |
| R25.htm | 100108 | 2012-02-22 08:05:06 |
| R26.htm | 245554 | 2012-02-22 08:05:06 |
| R27.htm | 140115 | 2012-02-22 08:05:06 |
| R28.htm | 271020 | 2012-02-22 08:05:06 |
| R29.htm | 242933 | 2012-02-22 08:05:06 |
| R3.htm | 8758 | 2012-02-22 08:05:06 |
| R30.htm | 65688 | 2012-02-22 08:05:06 |
| R31.htm | 35522 | 2012-02-22 08:05:06 |
| R32.htm | 59448 | 2012-02-22 08:05:06 |
| R33.htm | 119054 | 2012-02-22 08:05:06 |
| R34.htm | 82382 | 2012-02-22 08:05:06 |
| R35.htm | 249193 | 2012-02-22 08:05:06 |
| R36.htm | 55532 | 2012-02-22 08:05:06 |
| R37.htm | 64545 | 2012-02-22 08:05:06 |
| R38.htm | 55991 | 2012-02-22 08:05:06 |
| R39.htm | 10308 | 2012-02-22 08:05:06 |
| R4.htm | 96088 | 2012-02-22 08:05:06 |
| R40.htm | 74160 | 2012-02-22 08:05:06 |
| R41.htm | 46312 | 2012-02-22 08:05:06 |
| R42.htm | 58120 | 2012-02-22 08:05:06 |
| R43.htm | 16215 | 2012-02-22 08:05:06 |
| R44.htm | 247611 | 2012-02-22 08:05:06 |
| R45.htm | 57809 | 2012-02-22 08:05:06 |
| R46.htm | 177828 | 2012-02-22 08:05:06 |
| R47.htm | 60284 | 2012-02-22 08:05:06 |
| R48.htm | 28512 | 2012-02-22 08:05:06 |
| R49.htm | 31420 | 2012-02-22 08:05:06 |
| R5.htm | 92917 | 2012-02-22 08:05:06 |
| R50.htm | 27349 | 2012-02-22 08:05:06 |
| R51.htm | 472105 | 2012-02-22 08:05:06 |
| R52.htm | 301067 | 2012-02-22 08:05:06 |
| R53.htm | 195327 | 2012-02-22 08:05:06 |
| R54.htm | 49856 | 2012-02-22 08:05:06 |
| R55.htm | 10911 | 2012-02-22 08:05:06 |
| R56.htm | 17916 | 2012-02-22 08:05:06 |
| R57.htm | 56985 | 2012-02-22 08:05:06 |
| R58.htm | 40141 | 2012-02-22 08:05:06 |
| R59.htm | 136469 | 2012-02-22 08:05:06 |
| R6.htm | 81692 | 2012-02-22 08:05:06 |
| R60.htm | 125333 | 2012-02-22 08:05:06 |
| R61.htm | 20653 | 2012-02-22 08:05:06 |
| R62.htm | 263964 | 2012-02-22 08:05:06 |
| R63.htm | 31941 | 2012-02-22 08:05:06 |
| R64.htm | 20996 | 2012-02-22 08:05:06 |
| R7.htm | 5820 | 2012-02-22 08:05:06 |
| R8.htm | 159513 | 2012-02-22 08:05:06 |
| R9.htm | 6903 | 2012-02-22 08:05:06 |
| report.css | 2721 | 2012-02-22 08:05:06 |
| Show.js | 6423 | 2012-02-22 08:05:06 |