Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000887343-24-000245-index-headers.html | 2024-08-06 16:37:12 | |
| 0000887343-24-000245-index.html | 2024-08-06 16:37:12 | |
| 0000887343-24-000245.txt | 2024-08-06 16:37:12 | |
 0000887343-24-000245-xbrl.zip | 429488 | 2024-08-06 16:37:12 |
| colb-20240630.htm | 4779106 | 2024-08-06 16:37:12 |
| colb-20240630.xsd | 67991 | 2024-08-06 16:37:12 |
| colb-20240630xex311.htm | 10436 | 2024-08-06 16:37:12 |
| colb-20240630xex312.htm | 10260 | 2024-08-06 16:37:12 |
| colb-20240630xex313.htm | 10452 | 2024-08-06 16:37:12 |
| colb-20240630xex32.htm | 8015 | 2024-08-06 16:37:12 |
| colb-20240630_cal.xml | 135763 | 2024-08-06 16:37:12 |
| colb-20240630_def.xml | 436356 | 2024-08-06 16:37:12 |
| colb-20240630_htm.xml | 5976974 | 2024-08-06 16:37:12 |
| colb-20240630_lab.xml | 913849 | 2024-08-06 16:37:12 |
| colb-20240630_pre.xml | 689619 | 2024-08-06 16:37:12 |
| FilingSummary.xml | 50211 | 2024-08-06 16:37:12 |
| Financial_Report.xlsx | 181281 | 2024-08-06 16:37:12 |
| MetaLinks.json | 1115655 | 2024-08-06 16:37:12 |
| R1.htm | 51536 | 2024-08-06 16:37:12 |
| R10.htm | 14541 | 2024-08-06 16:37:12 |
| R11.htm | 121902 | 2024-08-06 16:37:12 |
| R12.htm | 24591 | 2024-08-06 16:37:12 |
| R13.htm | 1541969 | 2024-08-06 16:37:12 |
| R14.htm | 18512 | 2024-08-06 16:37:12 |
| R15.htm | 34797 | 2024-08-06 16:37:12 |
| R16.htm | 9685 | 2024-08-06 16:37:12 |
| R17.htm | 28006 | 2024-08-06 16:37:12 |
| R18.htm | 70079 | 2024-08-06 16:37:12 |
| R19.htm | 32913 | 2024-08-06 16:37:12 |
| R2.htm | 118097 | 2024-08-06 16:37:12 |
| R20.htm | 302569 | 2024-08-06 16:37:12 |
| R21.htm | 10071 | 2024-08-06 16:37:12 |
| R22.htm | 15927 | 2024-08-06 16:37:12 |
| R23.htm | 8483 | 2024-08-06 16:37:12 |
| R24.htm | 34533 | 2024-08-06 16:37:12 |
| R25.htm | 10329 | 2024-08-06 16:37:12 |
| R26.htm | 124854 | 2024-08-06 16:37:12 |
| R27.htm | 21645 | 2024-08-06 16:37:12 |
| R28.htm | 1520212 | 2024-08-06 16:37:12 |
| R29.htm | 18897 | 2024-08-06 16:37:12 |
| R3.htm | 30026 | 2024-08-06 16:37:12 |
| R30.htm | 29968 | 2024-08-06 16:37:12 |
| R31.htm | 9328 | 2024-08-06 16:37:12 |
| R32.htm | 68682 | 2024-08-06 16:37:12 |
| R33.htm | 34598 | 2024-08-06 16:37:12 |
| R34.htm | 299096 | 2024-08-06 16:37:12 |
| R35.htm | 15142 | 2024-08-06 16:37:12 |
| R36.htm | 11159 | 2024-08-06 16:37:12 |
| R37.htm | 33917 | 2024-08-06 16:37:12 |
| R38.htm | 9189 | 2024-08-06 16:37:12 |
| R39.htm | 35534 | 2024-08-06 16:37:12 |
| R4.htm | 133445 | 2024-08-06 16:37:12 |
| R40.htm | 55851 | 2024-08-06 16:37:12 |
| R41.htm | 16606 | 2024-08-06 16:37:12 |
| R42.htm | 22433 | 2024-08-06 16:37:12 |
| R43.htm | 33767 | 2024-08-06 16:37:12 |
| R44.htm | 61845 | 2024-08-06 16:37:12 |
| R45.htm | 64687 | 2024-08-06 16:37:12 |
| R46.htm | 125794 | 2024-08-06 16:37:12 |
| R47.htm | 78530 | 2024-08-06 16:37:12 |
| R48.htm | 179589 | 2024-08-06 16:37:12 |
| R49.htm | 350521 | 2024-08-06 16:37:12 |
| R5.htm | 60324 | 2024-08-06 16:37:12 |
| R50.htm | 13231 | 2024-08-06 16:37:12 |
| R51.htm | 9420 | 2024-08-06 16:37:12 |
| R52.htm | 17689 | 2024-08-06 16:37:12 |
| R53.htm | 12815 | 2024-08-06 16:37:12 |
| R54.htm | 5739 | 2024-08-06 16:37:12 |
| R55.htm | 5120 | 2024-08-06 16:37:12 |
| R56.htm | 20952 | 2024-08-06 16:37:12 |
| R57.htm | 15951 | 2024-08-06 16:37:12 |
| R58.htm | 36593 | 2024-08-06 16:37:12 |
| R59.htm | 30930 | 2024-08-06 16:37:12 |
| R6.htm | 99137 | 2024-08-06 16:37:12 |
| R60.htm | 45321 | 2024-08-06 16:37:12 |
| R61.htm | 83312 | 2024-08-06 16:37:12 |
| R62.htm | 38299 | 2024-08-06 16:37:12 |
| R63.htm | 5201 | 2024-08-06 16:37:12 |
| R64.htm | 80640 | 2024-08-06 16:37:12 |
| R65.htm | 140933 | 2024-08-06 16:37:12 |
| R66.htm | 19639 | 2024-08-06 16:37:12 |
| R67.htm | 63508 | 2024-08-06 16:37:12 |
| R68.htm | 60289 | 2024-08-06 16:37:12 |
| R69.htm | 22620 | 2024-08-06 16:37:12 |
| R7.htm | 5016 | 2024-08-06 16:37:12 |
| R70.htm | 9246 | 2024-08-06 16:37:12 |
| R71.htm | 13909 | 2024-08-06 16:37:12 |
| R72.htm | 19224 | 2024-08-06 16:37:12 |
| R8.htm | 131294 | 2024-08-06 16:37:12 |
| R9.htm | 31649 | 2024-08-06 16:37:12 |
| report.css | 2767 | 2024-08-06 16:37:12 |
| Show.js | 1085 | 2024-08-06 16:37:12 |