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| 0001004155-12-000029.txt | 2012-05-01 08:09:47 | |
 0001004155-12-000029-xbrl.zip | 212238 | 2012-05-01 08:09:47 |
| exhibit_12.htm | 78787 | 2012-05-01 08:09:47 |
| exhibit_31-1.htm | 12839 | 2012-05-01 08:09:47 |
| exhibit_31-2.htm | 12795 | 2012-05-01 08:09:47 |
| exhibit_32-1.htm | 5886 | 2012-05-01 08:09:47 |
| exhibit_32-2.htm | 5877 | 2012-05-01 08:09:47 |
| FilingSummary.xml | 35289 | 2012-05-01 08:09:47 |
| Financial_Report.xls | 2428426 | 2012-05-01 08:09:47 |
| form_10-q.htm | 2002960 | 2012-05-01 08:09:47 |
| gas-20120331.xml | 3105022 | 2012-05-01 08:09:47 |
| gas-20120331.xsd | 76018 | 2012-05-01 08:09:47 |
| gas-20120331_cal.xml | 37452 | 2012-05-01 08:09:47 |
| gas-20120331_def.xml | 355204 | 2012-05-01 08:09:47 |
| gas-20120331_lab.xml | 422439 | 2012-05-01 08:09:47 |
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