Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-23-136870-index-headers.html | 2023-05-05 13:54:00 | |
| 0001193125-23-136870-index.html | 2023-05-05 13:54:00 | |
| 0001193125-23-136870.txt | 2023-05-05 13:54:00 | |
 0001193125-23-136870-xbrl.zip | 11989 | 2023-05-05 13:54:00 |
| cpk-20230503.xsd | 2837 | 2023-05-05 13:54:00 |
| cpk-20230503_lab.xml | 17234 | 2023-05-05 13:54:00 |
| cpk-20230503_pre.xml | 10804 | 2023-05-05 13:54:00 |
| d268183d8k.htm | 34783 | 2023-05-05 13:54:00 |
| d268183d8k_htm.xml | 3268 | 2023-05-05 13:54:00 |
| d268183dex991.htm | 6650 | 2023-05-05 13:54:00 |
| FilingSummary.xml | 1937 | 2023-05-05 13:54:00 |
| Financial_Report.xlsx | 5698 | 2023-05-05 13:54:00 |
 g268183g0504221318942.jpg | 4368 | 2023-05-05 13:54:00 |
| MetaLinks.json | 18192 | 2023-05-05 13:54:00 |
| R1.htm | 38095 | 2023-05-05 13:54:00 |
| report.css | 2767 | 2023-05-05 13:54:00 |
| Show.js | 1085 | 2023-05-05 13:54:00 |