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|---|---|---|
 0001193125-12-099980-index-headers.html | 2012-03-07 06:09:05 | |
| 0001193125-12-099980-index.html | 2012-03-07 06:09:05 | |
| 0001193125-12-099980.txt | 2012-03-07 06:09:05 | |
 0001193125-12-099980-xbrl.zip | 124345 | 2012-03-07 06:09:05 |
| cpk-20111231.xml | 1260269 | 2012-03-07 06:09:05 |
| cpk-20111231.xsd | 17777 | 2012-03-07 06:09:05 |
| cpk-20111231_cal.xml | 59657 | 2012-03-07 06:09:05 |
| cpk-20111231_def.xml | 19079 | 2012-03-07 06:09:05 |
| cpk-20111231_lab.xml | 205856 | 2012-03-07 06:09:05 |
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| d302139d10k.htm | 2254915 | 2012-03-07 06:09:05 |
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| d302139dex12.htm | 32431 | 2012-03-07 06:09:05 |
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| d302139dex142.htm | 57224 | 2012-03-07 06:09:05 |
| d302139dex21.htm | 6678 | 2012-03-07 06:09:05 |
| d302139dex231.htm | 2417 | 2012-03-07 06:09:05 |
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| d302139dex312.htm | 9593 | 2012-03-07 06:09:05 |
| d302139dex321.htm | 3133 | 2012-03-07 06:09:05 |
| d302139dex322.htm | 3112 | 2012-03-07 06:09:05 |
| FilingSummary.xml | 13431 | 2012-03-07 06:09:05 |
| Financial_Report.xls | 1039060 | 2012-03-07 06:09:05 |
 g302139page57.jpg | 4097 | 2012-03-07 06:09:05 |
 g302139page58.jpg | 2989 | 2012-03-07 06:09:05 |
 g302139pic-005.jpg | 38891 | 2012-03-07 06:09:05 |
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| R10.htm | 127843 | 2012-03-07 06:09:05 |
| R11.htm | 17783 | 2012-03-07 06:09:05 |
| R12.htm | 67598 | 2012-03-07 06:09:05 |
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| R2.htm | 84167 | 2012-03-07 06:09:05 |
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| R8.htm | 123391 | 2012-03-07 06:09:05 |
| R9.htm | 12874 | 2012-03-07 06:09:05 |
| report.css | 2721 | 2012-03-07 06:09:05 |
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