Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-20-181408-index-headers.html | 2020-06-26 21:51:21 | |
| 0001193125-20-181408-index.html | 2020-06-26 21:51:21 | |
| 0001193125-20-181408.txt | 2020-06-26 21:51:21 | |
 0001193125-20-181408-xbrl.zip | 22816 | 2020-06-26 21:51:21 |
| cpk-20191231.xsd | 4954 | 2020-06-26 21:51:21 |
| cpk-20191231_cal.xml | 663 | 2020-06-26 21:51:21 |
| cpk-20191231_def.xml | 1668 | 2020-06-26 21:51:21 |
| cpk-20191231_lab.xml | 26098 | 2020-06-26 21:51:21 |
| cpk-20191231_pre.xml | 15949 | 2020-06-26 21:51:21 |
| d18818d10ka.htm | 210957 | 2020-06-26 21:51:21 |
| d18818d10ka_htm.xml | 6871 | 2020-06-26 21:51:21 |
| d18818dex311.htm | 2125 | 2020-06-26 21:51:21 |
| d18818dex312.htm | 2246 | 2020-06-26 21:51:21 |
| d18818dex412.htm | 9056 | 2020-06-26 21:51:21 |
| FilingSummary.xml | 1778 | 2020-06-26 21:51:21 |
| Financial_Report.xlsx | 7035 | 2020-06-26 21:51:21 |
| MetaLinks.json | 26403 | 2020-06-26 21:51:21 |
| R1.htm | 64141 | 2020-06-26 21:51:21 |
| report.css | 2767 | 2020-06-26 21:51:21 |
| Show.js | 1085 | 2020-06-26 21:51:21 |