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| 0001628280-17-004712-index.html | 2017-05-03 08:53:19 | |
| 0001628280-17-004712.txt | 2017-05-03 08:53:19 | |
 0001628280-17-004712-xbrl.zip | 230444 | 2017-05-03 08:53:19 |
| cpk-20170331.xml | 1834028 | 2017-05-03 08:53:19 |
| cpk-20170331.xsd | 63445 | 2017-05-03 08:53:19 |
| cpk-20170331_cal.xml | 90495 | 2017-05-03 08:53:19 |
| cpk-20170331_def.xml | 263913 | 2017-05-03 08:53:19 |
| cpk-20170331_lab.xml | 726275 | 2017-05-03 08:53:19 |
| cpk-20170331_pre.xml | 436346 | 2017-05-03 08:53:19 |
| cpk0331201710-q.htm | 1671268 | 2017-05-03 08:53:19 |
| cpk3312017ex-101.htm | 47369 | 2017-05-03 08:53:19 |
| cpk3312017ex-311.htm | 12260 | 2017-05-03 08:53:19 |
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| cpk3312017ex-321.htm | 5126 | 2017-05-03 08:53:19 |
| cpk3312017ex-322.htm | 5007 | 2017-05-03 08:53:19 |
| FilingSummary.xml | 35835 | 2017-05-03 08:53:19 |
| Financial_Report.xlsx | 81765 | 2017-05-03 08:53:19 |
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| report.css | 2767 | 2017-05-03 08:53:19 |
| Show.js | 1410 | 2017-05-03 08:53:19 |