Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0000048732-12-000006-index.html | 2012-03-12 15:16:31 | |
| 0000048732-12-000006.txt | 2012-03-12 15:16:31 | |
 0000048732-12-000006-xbrl.zip | 88603 | 2012-03-12 15:16:31 |
| cehe-20111231.xml | 684670 | 2012-03-12 15:16:31 |
| cehe-20111231.xsd | 19823 | 2012-03-12 15:16:31 |
| cehe-20111231_cal.xml | 51828 | 2012-03-12 15:16:31 |
| cehe-20111231_def.xml | 35633 | 2012-03-12 15:16:31 |
| cehe-20111231_lab.xml | 239689 | 2012-03-12 15:16:31 |
| cehe-20111231_pre.xml | 119977 | 2012-03-12 15:16:31 |
| cehe_10kx12312011.htm | 1534003 | 2012-03-12 15:16:31 |
| cehe_exhibit12x12312011.htm | 53911 | 2012-03-12 15:16:31 |
| cehe_exhibit23x12312011.htm | 2872 | 2012-03-12 15:16:31 |
| cehe_exhibit311x12312011.htm | 13069 | 2012-03-12 15:16:31 |
| cehe_exhibit312x12312011.htm | 12810 | 2012-03-12 15:16:31 |
| cehe_exhibit321x12312011.htm | 6061 | 2012-03-12 15:16:31 |
| cehe_exhibit322x12312011.htm | 6062 | 2012-03-12 15:16:31 |
| FilingSummary.xml | 9836 | 2012-03-12 15:16:31 |
| Financial_Report.xls | 592288 | 2012-03-12 15:16:31 |
| R1.htm | 36480 | 2012-03-12 15:16:31 |
| R10.htm | 53134 | 2012-03-12 15:16:31 |
| R11.htm | 63108 | 2012-03-12 15:16:31 |
| R12.htm | 161790 | 2012-03-12 15:16:31 |
| R13.htm | 29815 | 2012-03-12 15:16:31 |
| R14.htm | 18978 | 2012-03-12 15:16:31 |
| R15.htm | 62558 | 2012-03-12 15:16:31 |
| R16.htm | 128832 | 2012-03-12 15:16:31 |
| R17.htm | 19267 | 2012-03-12 15:16:31 |
| R18.htm | 48544 | 2012-03-12 15:16:31 |
| R2.htm | 56146 | 2012-03-12 15:16:31 |
| R3.htm | 148069 | 2012-03-12 15:16:31 |
| R4.htm | 13515 | 2012-03-12 15:16:31 |
| R5.htm | 144309 | 2012-03-12 15:16:31 |
| R6.htm | 20537 | 2012-03-12 15:16:31 |
| R7.htm | 19641 | 2012-03-12 15:16:31 |
| R8.htm | 12082 | 2012-03-12 15:16:31 |
| R9.htm | 28890 | 2012-03-12 15:16:31 |
| report.css | 2721 | 2012-03-12 15:16:31 |
| Show.js | 6423 | 2012-03-12 15:16:31 |