Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-23-274090-index-headers.html | 2023-11-09 08:27:01 | |
| 0001193125-23-274090-index.html | 2023-11-09 08:27:01 | |
| 0001193125-23-274090.txt | 2023-11-09 08:27:01 | |
 0001193125-23-274090-xbrl.zip | 67194 | 2023-11-09 08:27:01 |
| cpk-20231109.xsd | 2838 | 2023-11-09 08:27:01 |
| cpk-20231109_lab.xml | 17235 | 2023-11-09 08:27:01 |
| cpk-20231109_pre.xml | 10805 | 2023-11-09 08:27:01 |
| d585321d8k.htm | 31584 | 2023-11-09 08:27:01 |
| d585321d8k_htm.xml | 3313 | 2023-11-09 08:27:01 |
| d585321dex231.htm | 1809 | 2023-11-09 08:27:01 |
| d585321dex991.htm | 238563 | 2023-11-09 08:27:01 |
| d585321dex992.htm | 285191 | 2023-11-09 08:27:01 |
| d585321dex993.htm | 254247 | 2023-11-09 08:27:01 |
| FilingSummary.xml | 1707 | 2023-11-09 08:27:01 |
| Financial_Report.xlsx | 5701 | 2023-11-09 08:27:01 |
 g585321g57h54.jpg | 6291 | 2023-11-09 08:27:01 |
| MetaLinks.json | 18192 | 2023-11-09 08:27:01 |
| R1.htm | 38098 | 2023-11-09 08:27:01 |
| report.css | 2767 | 2023-11-09 08:27:01 |
| Show.js | 1085 | 2023-11-09 08:27:01 |