Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000711669-21-000037-index-headers.html | 2021-03-23 10:45:27 | |
| 0000711669-21-000037-index.html | 2021-03-23 10:45:27 | |
| 0000711669-21-000037.txt | 2021-03-23 10:45:27 | |
 0000711669-21-000037-xbrl.zip | 728576 | 2021-03-23 10:45:27 |
| cban-20201231.htm | 3986867 | 2021-03-23 10:45:27 |
| cban-20201231.xsd | 71724 | 2021-03-23 10:45:27 |
| cban-20201231_cal.xml | 178368 | 2021-03-23 10:45:27 |
| cban-20201231_def.xml | 485226 | 2021-03-23 10:45:27 |
 cban-20201231_g1.jpg | 29572 | 2021-03-23 10:45:27 |
 cban-20201231_g2.jpg | 115381 | 2021-03-23 10:45:27 |
 cban-20201231_g3.jpg | 37601 | 2021-03-23 10:45:27 |
 cban-20201231_g4.jpg | 19479 | 2021-03-23 10:45:27 |
 cban-20201231_g5.jpg | 14372 | 2021-03-23 10:45:27 |
| cban-20201231_htm.xml | 3884719 | 2021-03-23 10:45:27 |
| cban-20201231_lab.xml | 1007662 | 2021-03-23 10:45:27 |
| cban-20201231_pre.xml | 728126 | 2021-03-23 10:45:27 |
| exhibit21.htm | 4951 | 2021-03-23 10:45:27 |
| exhibit23.htm | 2774 | 2021-03-23 10:45:27 |
| exhibit31110-k2020.htm | 16569 | 2021-03-23 10:45:27 |
| exhibit31210-k2020.htm | 16593 | 2021-03-23 10:45:27 |
| exhibit32110-k2020.htm | 7219 | 2021-03-23 10:45:27 |
| exhibit41.htm | 21873 | 2021-03-23 10:45:27 |
| FilingSummary.xml | 59663 | 2021-03-23 10:45:27 |
| Financial_Report.xlsx | 166820 | 2021-03-23 10:45:27 |
| MetaLinks.json | 1008984 | 2021-03-23 10:45:27 |
| R1.htm | 63247 | 2021-03-23 10:45:27 |
| R10.htm | 88021 | 2021-03-23 10:45:27 |
| R11.htm | 345416 | 2021-03-23 10:45:27 |
| R12.htm | 113363 | 2021-03-23 10:45:27 |
| R13.htm | 16999 | 2021-03-23 10:45:27 |
| R14.htm | 13819 | 2021-03-23 10:45:27 |
| R15.htm | 25090 | 2021-03-23 10:45:27 |
| R16.htm | 49802 | 2021-03-23 10:45:27 |
| R17.htm | 22053 | 2021-03-23 10:45:27 |
| R18.htm | 53663 | 2021-03-23 10:45:27 |
| R19.htm | 31873 | 2021-03-23 10:45:27 |
| R2.htm | 93880 | 2021-03-23 10:45:27 |
| R20.htm | 9932 | 2021-03-23 10:45:27 |
| R21.htm | 15144 | 2021-03-23 10:45:27 |
| R22.htm | 13973 | 2021-03-23 10:45:27 |
| R23.htm | 131043 | 2021-03-23 10:45:27 |
| R24.htm | 77670 | 2021-03-23 10:45:27 |
| R25.htm | 74135 | 2021-03-23 10:45:27 |
| R26.htm | 17610 | 2021-03-23 10:45:27 |
| R27.htm | 51276 | 2021-03-23 10:45:27 |
| R28.htm | 111892 | 2021-03-23 10:45:27 |
| R29.htm | 74112 | 2021-03-23 10:45:27 |
| R3.htm | 19010 | 2021-03-23 10:45:27 |
| R30.htm | 87355 | 2021-03-23 10:45:27 |
| R31.htm | 333723 | 2021-03-23 10:45:27 |
| R32.htm | 113527 | 2021-03-23 10:45:27 |
| R33.htm | 15973 | 2021-03-23 10:45:27 |
| R34.htm | 13260 | 2021-03-23 10:45:27 |
| R35.htm | 25108 | 2021-03-23 10:45:27 |
| R36.htm | 52077 | 2021-03-23 10:45:27 |
| R37.htm | 20919 | 2021-03-23 10:45:27 |
| R38.htm | 52652 | 2021-03-23 10:45:27 |
| R39.htm | 31667 | 2021-03-23 10:45:27 |
| R4.htm | 114569 | 2021-03-23 10:45:27 |
| R40.htm | 9258 | 2021-03-23 10:45:27 |
| R41.htm | 11936 | 2021-03-23 10:45:27 |
| R42.htm | 119937 | 2021-03-23 10:45:27 |
| R43.htm | 71667 | 2021-03-23 10:45:27 |
| R44.htm | 74763 | 2021-03-23 10:45:27 |
| R45.htm | 17004 | 2021-03-23 10:45:27 |
| R46.htm | 46942 | 2021-03-23 10:45:27 |
| R47.htm | 23495 | 2021-03-23 10:45:27 |
| R48.htm | 40693 | 2021-03-23 10:45:27 |
| R49.htm | 91656 | 2021-03-23 10:45:27 |
| R5.htm | 30040 | 2021-03-23 10:45:27 |
| R50.htm | 15088 | 2021-03-23 10:45:27 |
| R51.htm | 18496 | 2021-03-23 10:45:27 |
| R52.htm | 28045 | 2021-03-23 10:45:27 |
| R53.htm | 33231 | 2021-03-23 10:45:27 |
| R54.htm | 14291 | 2021-03-23 10:45:27 |
| R55.htm | 40585 | 2021-03-23 10:45:27 |
| R56.htm | 39710 | 2021-03-23 10:45:27 |
| R57.htm | 85382 | 2021-03-23 10:45:27 |
| R58.htm | 29849 | 2021-03-23 10:45:27 |
| R59.htm | 93410 | 2021-03-23 10:45:27 |
| R6.htm | 38365 | 2021-03-23 10:45:27 |
| R60.htm | 90035 | 2021-03-23 10:45:27 |
| R61.htm | 77057 | 2021-03-23 10:45:27 |
| R62.htm | 20861 | 2021-03-23 10:45:27 |
| R63.htm | 4763 | 2021-03-23 10:45:27 |
| R64.htm | 12526 | 2021-03-23 10:45:27 |
| R65.htm | 11995 | 2021-03-23 10:45:27 |
| R66.htm | 18355 | 2021-03-23 10:45:27 |
| R67.htm | 16771 | 2021-03-23 10:45:27 |
| R68.htm | 16469 | 2021-03-23 10:45:27 |
| R69.htm | 18695 | 2021-03-23 10:45:27 |
| R7.htm | 116680 | 2021-03-23 10:45:27 |
| R70.htm | 43283 | 2021-03-23 10:45:27 |
| R71.htm | 8558 | 2021-03-23 10:45:27 |
| R72.htm | 12415 | 2021-03-23 10:45:27 |
| R73.htm | 16682 | 2021-03-23 10:45:27 |
| R74.htm | 70084 | 2021-03-23 10:45:27 |
| R75.htm | 52007 | 2021-03-23 10:45:27 |
| R76.htm | 19523 | 2021-03-23 10:45:27 |
| R77.htm | 12015 | 2021-03-23 10:45:27 |
| R78.htm | 11043 | 2021-03-23 10:45:27 |
| R79.htm | 21320 | 2021-03-23 10:45:27 |
| R8.htm | 63833 | 2021-03-23 10:45:27 |
| R80.htm | 8770 | 2021-03-23 10:45:27 |
| R81.htm | 31325 | 2021-03-23 10:45:27 |
| R82.htm | 8708 | 2021-03-23 10:45:27 |
| R83.htm | 4079 | 2021-03-23 10:45:27 |
| R84.htm | 11683 | 2021-03-23 10:45:27 |
| R85.htm | 52975 | 2021-03-23 10:45:27 |
| R86.htm | 4034 | 2021-03-23 10:45:27 |
| R87.htm | 17215 | 2021-03-23 10:45:27 |
| R88.htm | 21225 | 2021-03-23 10:45:27 |
| R89.htm | 14116 | 2021-03-23 10:45:27 |
| R9.htm | 75664 | 2021-03-23 10:45:27 |
| R90.htm | 11201 | 2021-03-23 10:45:27 |
| R91.htm | 65439 | 2021-03-23 10:45:27 |
| R92.htm | 59041 | 2021-03-23 10:45:27 |
| R93.htm | 13922 | 2021-03-23 10:45:27 |
| R94.htm | 47618 | 2021-03-23 10:45:27 |
| R95.htm | 57205 | 2021-03-23 10:45:27 |
| R96.htm | 30541 | 2021-03-23 10:45:27 |
| R97.htm | 39359 | 2021-03-23 10:45:27 |
| report.css | 2768 | 2021-03-23 10:45:27 |
| Show.js | 1086 | 2021-03-23 10:45:27 |