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| 0001130310-15-000012-index.html | 2015-05-11 08:14:51 | |
| 0001130310-15-000012.txt | 2015-05-11 08:14:51 | |
 0001130310-15-000012-xbrl.zip | 218805 | 2015-05-11 08:14:51 |
| cnp-20150331.xml | 1666621 | 2015-05-11 08:14:51 |
| cnp-20150331.xsd | 42253 | 2015-05-11 08:14:51 |
| cnp-20150331_cal.xml | 83111 | 2015-05-11 08:14:51 |
| cnp-20150331_def.xml | 344405 | 2015-05-11 08:14:51 |
| cnp-20150331_lab.xml | 683916 | 2015-05-11 08:14:51 |
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| cnp_10qx3312015.htm | 1338946 | 2015-05-11 08:14:51 |
| cnp_exhibit12x3312015.htm | 26509 | 2015-05-11 08:14:51 |
| cnp_exhibit311x3312015.htm | 12852 | 2015-05-11 08:14:51 |
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| cnp_exhibit321x3312015.htm | 5936 | 2015-05-11 08:14:51 |
| cnp_exhibit322x3312015.htm | 5927 | 2015-05-11 08:14:51 |
| FilingSummary.xml | 22047 | 2015-05-11 08:14:51 |
| Financial_Report.xls | 1368512 | 2015-05-11 08:14:51 |
| Financial_Report.xlsx | 180994 | 2015-05-11 08:14:51 |
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| report.css | 2740 | 2015-05-11 08:14:51 |
| Show.js | 1410 | 2015-05-11 08:14:51 |