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| 0001130310-19-000021.txt | 2019-05-09 06:24:46 | |
 0001130310-19-000021-xbrl.zip | 518649 | 2019-05-09 06:24:46 |
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| cehe_exhibit3112x3312019.htm | 12976 | 2019-05-09 06:24:46 |
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| cercexhibit3223_3312019.htm | 5755 | 2019-05-09 06:24:46 |
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| report.css | 2767 | 2019-05-09 06:24:46 |
| Show.js | 1085 | 2019-05-09 06:24:46 |