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| 0001193125-12-079791.txt | 2012-02-27 06:58:30 | |
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| d268735d10k.htm | 683737 | 2012-02-27 06:58:30 |
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| d268735dex31a.htm | 6329 | 2012-02-27 06:58:30 |
| d268735dex31b.htm | 6384 | 2012-02-27 06:58:30 |
| d268735dex32a.htm | 3287 | 2012-02-27 06:58:30 |
| d268735dex32b.htm | 3482 | 2012-02-27 06:58:30 |
| epng-20111231.xml | 364747 | 2012-02-27 06:58:30 |
| epng-20111231.xsd | 11526 | 2012-02-27 06:58:30 |
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| epng-20111231_pre.xml | 79373 | 2012-02-27 06:58:30 |
| FilingSummary.xml | 9815 | 2012-02-27 06:58:30 |
| Financial_Report.xls | 318438 | 2012-02-27 06:58:30 |
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