Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-23-134283-index-headers.html | 2023-05-03 15:03:29 | |
| 0001193125-23-134283-index.html | 2023-05-03 15:03:29 | |
| 0001193125-23-134283.txt | 2023-05-03 15:03:29 | |
 0001193125-23-134283-xbrl.zip | 27877 | 2023-05-03 15:03:29 |
| cpk-20230503.xsd | 2838 | 2023-05-03 15:03:29 |
| cpk-20230503_lab.xml | 17980 | 2023-05-03 15:03:29 |
| cpk-20230503_pre.xml | 11251 | 2023-05-03 15:03:29 |
| d464975d8k.htm | 30815 | 2023-05-03 15:03:29 |
| d464975d8k_htm.xml | 3475 | 2023-05-03 15:03:29 |
| d464975dex31.htm | 89480 | 2023-05-03 15:03:29 |
| FilingSummary.xml | 1936 | 2023-05-03 15:03:29 |
| Financial_Report.xlsx | 5728 | 2023-05-03 15:03:29 |
| MetaLinks.json | 18766 | 2023-05-03 15:03:29 |
| R1.htm | 39612 | 2023-05-03 15:03:29 |
| report.css | 2767 | 2023-05-03 15:03:29 |
| Show.js | 1084 | 2023-05-03 15:03:29 |