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| 0000859598-17-000127-index.html | 2017-08-03 18:18:56 | |
| 0000859598-17-000127.txt | 2017-08-03 18:18:56 | |
 0000859598-17-000127-xbrl.zip | 243156 | 2017-08-03 18:18:56 |
| ckh-06302017x10q.htm | 2150016 | 2017-08-03 18:18:56 |
| ckh-06302017xex311.htm | 13005 | 2017-08-03 18:18:56 |
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| ckh-06302017xex321.htm | 5395 | 2017-08-03 18:18:56 |
| ckh-06302017xex322.htm | 5129 | 2017-08-03 18:18:56 |
| ckh-20170630.xml | 2761881 | 2017-08-03 18:18:56 |
| ckh-20170630.xsd | 40572 | 2017-08-03 18:18:56 |
| ckh-20170630_cal.xml | 88523 | 2017-08-03 18:18:56 |
| ckh-20170630_def.xml | 264386 | 2017-08-03 18:18:56 |
| ckh-20170630_lab.xml | 672077 | 2017-08-03 18:18:56 |
| ckh-20170630_pre.xml | 405376 | 2017-08-03 18:18:56 |
| FilingSummary.xml | 31139 | 2017-08-03 18:18:56 |
| Financial_Report.xlsx | 82129 | 2017-08-03 18:18:56 |
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| report.css | 2767 | 2017-08-03 18:18:56 |
| Show.js | 1410 | 2017-08-03 18:18:56 |