Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000859598-20-000060-index-headers.html | 2020-07-27 19:04:38 | |
| 0000859598-20-000060-index.html | 2020-07-27 19:04:38 | |
| 0000859598-20-000060.txt | 2020-07-27 19:04:38 | |
 0000859598-20-000060-xbrl.zip | 48586 | 2020-07-27 19:04:38 |
| ckh-20200727.htm | 43413 | 2020-07-27 19:04:38 |
| ckh-20200727.xsd | 2445 | 2020-07-27 19:04:38 |
| ckh-20200727_cal.xml | 730 | 2020-07-27 19:04:38 |
| ckh-20200727_def.xml | 21299 | 2020-07-27 19:04:38 |
| ckh-20200727_htm.xml | 10220 | 2020-07-27 19:04:38 |
| ckh-20200727_lab.xml | 37606 | 2020-07-27 19:04:38 |
| ckh-20200727_pre.xml | 21848 | 2020-07-27 19:04:38 |
 colorlogockh11.jpg | 16419 | 2020-07-27 19:04:38 |
| exhibit991q22020earnin.htm | 1137596 | 2020-07-27 19:04:38 |
| FilingSummary.xml | 1728 | 2020-07-27 19:04:38 |
| Financial_Report.xlsx | 5492 | 2020-07-27 19:04:38 |
| MetaLinks.json | 26093 | 2020-07-27 19:04:38 |
| R1.htm | 43930 | 2020-07-27 19:04:38 |
| report.css | 2767 | 2020-07-27 19:04:38 |
| Show.js | 1085 | 2020-07-27 19:04:38 |