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| 0001104659-21-134136-index.html | 2021-11-04 11:13:09 | |
| 0001104659-21-134136.txt | 2021-11-04 11:13:09 | |
 0001104659-21-134136-xbrl.zip | 211761 | 2021-11-04 11:13:09 |
| ccoi-20210930.xsd | 36155 | 2021-11-04 11:13:09 |
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| ccoi-20210930xex31d1.htm | 14762 | 2021-11-04 11:13:09 |
| ccoi-20210930xex31d2.htm | 14211 | 2021-11-04 11:13:09 |
| ccoi-20210930xex32d1.htm | 7054 | 2021-11-04 11:13:09 |
| ccoi-20210930xex32d2.htm | 7270 | 2021-11-04 11:13:09 |
| ccoi-20210930_cal.xml | 57528 | 2021-11-04 11:13:09 |
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| FilingSummary.xml | 26337 | 2021-11-04 11:13:09 |
| Financial_Report.xlsx | 70736 | 2021-11-04 11:13:09 |
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| R9.htm | 6225 | 2021-11-04 11:13:09 |
| report.css | 2767 | 2021-11-04 11:13:09 |
| Show.js | 1085 | 2021-11-04 11:13:09 |