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| 0001437749-19-005440-index.html | 2019-03-21 17:30:43 | |
| 0001437749-19-005440.txt | 2019-03-21 17:30:43 | |
 0001437749-19-005440-xbrl.zip | 97081 | 2019-03-21 17:30:43 |
| ckx-20181231.xml | 807904 | 2019-03-21 17:30:43 |
| ckx-20181231.xsd | 48513 | 2019-03-21 17:30:43 |
| ckx-20181231_cal.xml | 32975 | 2019-03-21 17:30:43 |
| ckx-20181231_def.xml | 275061 | 2019-03-21 17:30:43 |
| ckx-20181231_lab.xml | 236470 | 2019-03-21 17:30:43 |
| ckx-20181231_pre.xml | 299792 | 2019-03-21 17:30:43 |
| ckx20181231_10k.htm | 748154 | 2019-03-21 17:30:43 |
| ex_137808.htm | 14444 | 2019-03-21 17:30:43 |
| ex_137809.htm | 5365 | 2019-03-21 17:30:43 |
| ex_137918.htm | 18150 | 2019-03-21 17:30:43 |
| ex_137919.htm | 10608 | 2019-03-21 17:30:43 |
| FilingSummary.xml | 32005 | 2019-03-21 17:30:43 |
| Financial_Report.xlsx | 47916 | 2019-03-21 17:30:43 |
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| report.css | 2767 | 2019-03-21 17:30:43 |
| Show.js | 1085 | 2019-03-21 17:30:43 |