Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000887343-26-000088-index-headers.html | 2026-02-26 16:31:56 | |
| 0000887343-26-000088-index.html | 2026-02-26 16:31:56 | |
| 0000887343-26-000088.txt | 2026-02-26 16:31:56 | |
 0000887343-26-000088-xbrl.zip | 844345 | 2026-02-26 16:31:56 |
| colb-20251231.htm | 5859408 | 2026-02-26 16:31:56 |
| colb-20251231.xsd | 134292 | 2026-02-26 16:31:56 |
| colb-20251231xex1028execut.htm | 522210 | 2026-02-26 16:31:56 |
| colb-20251231xex1066ivanof.htm | 12563 | 2026-02-26 16:31:56 |
| colb-20251231xex1069transi.htm | 25026 | 2026-02-26 16:31:56 |
| colb-20251231xex211x10k.htm | 14967 | 2026-02-26 16:31:56 |
| colb-20251231xex231x10k.htm | 3034 | 2026-02-26 16:31:56 |
| colb-20251231xex311.htm | 7990 | 2026-02-26 16:31:56 |
| colb-20251231xex312.htm | 8085 | 2026-02-26 16:31:56 |
| colb-20251231xex313.htm | 8101 | 2026-02-26 16:31:56 |
| colb-20251231xex32.htm | 7749 | 2026-02-26 16:31:56 |
| colb-20251231xex32arbylaws.htm | 194647 | 2026-02-26 16:31:56 |
| colb-20251231_cal.xml | 212146 | 2026-02-26 16:31:56 |
| colb-20251231_def.xml | 678696 | 2026-02-26 16:31:56 |
 colb-20251231_g1.jpg | 114287 | 2026-02-26 16:31:56 |
| colb-20251231_htm.xml | 7464023 | 2026-02-26 16:31:56 |
| colb-20251231_lab.xml | 1506944 | 2026-02-26 16:31:56 |
| colb-20251231_pre.xml | 1146734 | 2026-02-26 16:31:56 |
| colb-2025x12x31xex191xvjul.htm | 87444 | 2026-02-26 16:31:56 |
| FilingSummary.xml | 98861 | 2026-02-26 16:31:56 |
| MetaLinks.json | 1948204 | 2026-02-26 16:31:56 |
| R1.htm | 64848 | 2026-02-26 16:31:56 |
| R10.htm | 95654 | 2026-02-26 16:31:56 |
| R100.htm | 9113 | 2026-02-26 16:31:56 |
| R101.htm | 11521 | 2026-02-26 16:31:56 |
| R102.htm | 15593 | 2026-02-26 16:31:56 |
| R103.htm | 14431 | 2026-02-26 16:31:56 |
| R104.htm | 28169 | 2026-02-26 16:31:56 |
| R105.htm | 12830 | 2026-02-26 16:31:56 |
| R106.htm | 5950 | 2026-02-26 16:31:56 |
| R107.htm | 33480 | 2026-02-26 16:31:56 |
| R108.htm | 12784 | 2026-02-26 16:31:56 |
| R109.htm | 103401 | 2026-02-26 16:31:56 |
| R11.htm | 75316 | 2026-02-26 16:31:56 |
| R110.htm | 11204 | 2026-02-26 16:31:56 |
| R111.htm | 56105 | 2026-02-26 16:31:56 |
| R112.htm | 16660 | 2026-02-26 16:31:56 |
| R113.htm | 41462 | 2026-02-26 16:31:56 |
| R114.htm | 34119 | 2026-02-26 16:31:56 |
| R115.htm | 49797 | 2026-02-26 16:31:56 |
| R116.htm | 24533 | 2026-02-26 16:31:56 |
| R117.htm | 63249 | 2026-02-26 16:31:56 |
| R118.htm | 42795 | 2026-02-26 16:31:56 |
| R119.htm | 7132 | 2026-02-26 16:31:56 |
| R12.htm | 5988 | 2026-02-26 16:31:56 |
| R120.htm | 29230 | 2026-02-26 16:31:56 |
| R121.htm | 29232 | 2026-02-26 16:31:56 |
| R122.htm | 7839 | 2026-02-26 16:31:56 |
| R123.htm | 44068 | 2026-02-26 16:31:56 |
| R124.htm | 8005 | 2026-02-26 16:31:56 |
| R125.htm | 50898 | 2026-02-26 16:31:56 |
| R126.htm | 5008 | 2026-02-26 16:31:56 |
| R127.htm | 90303 | 2026-02-26 16:31:56 |
| R128.htm | 135142 | 2026-02-26 16:31:56 |
| R129.htm | 17801 | 2026-02-26 16:31:56 |
| R13.htm | 110231 | 2026-02-26 16:31:56 |
| R130.htm | 44973 | 2026-02-26 16:31:56 |
| R131.htm | 42107 | 2026-02-26 16:31:56 |
| R132.htm | 19972 | 2026-02-26 16:31:56 |
| R133.htm | 8272 | 2026-02-26 16:31:56 |
| R134.htm | 16889 | 2026-02-26 16:31:56 |
| R135.htm | 61864 | 2026-02-26 16:31:56 |
| R136.htm | 48380 | 2026-02-26 16:31:56 |
| R137.htm | 60055 | 2026-02-26 16:31:56 |
| R138.htm | 26293 | 2026-02-26 16:31:56 |
| R139.htm | 25666 | 2026-02-26 16:31:56 |
| R14.htm | 39840 | 2026-02-26 16:31:56 |
| R140.htm | 61405 | 2026-02-26 16:31:56 |
| R141.htm | 16319 | 2026-02-26 16:31:56 |
| R142.htm | 34446 | 2026-02-26 16:31:56 |
| R143.htm | 24753 | 2026-02-26 16:31:56 |
| R144.htm | 9758 | 2026-02-26 16:31:56 |
| R145.htm | 15381 | 2026-02-26 16:31:56 |
| R146.htm | 18395 | 2026-02-26 16:31:56 |
| R147.htm | 7509 | 2026-02-26 16:31:56 |
| R15.htm | 1510090 | 2026-02-26 16:31:56 |
| R16.htm | 18789 | 2026-02-26 16:31:56 |
| R17.htm | 40611 | 2026-02-26 16:31:56 |
| R18.htm | 25718 | 2026-02-26 16:31:56 |
| R19.htm | 53474 | 2026-02-26 16:31:56 |
| R2.htm | 7779 | 2026-02-26 16:31:56 |
| R20.htm | 27214 | 2026-02-26 16:31:56 |
| R21.htm | 17478 | 2026-02-26 16:31:56 |
| R22.htm | 24328 | 2026-02-26 16:31:56 |
| R23.htm | 87579 | 2026-02-26 16:31:56 |
| R24.htm | 14285 | 2026-02-26 16:31:56 |
| R25.htm | 30399 | 2026-02-26 16:31:56 |
| R26.htm | 78343 | 2026-02-26 16:31:56 |
| R27.htm | 46757 | 2026-02-26 16:31:56 |
| R28.htm | 66489 | 2026-02-26 16:31:56 |
| R29.htm | 13728 | 2026-02-26 16:31:56 |
| R3.htm | 124606 | 2026-02-26 16:31:56 |
| R30.htm | 32110 | 2026-02-26 16:31:56 |
| R31.htm | 242175 | 2026-02-26 16:31:56 |
| R32.htm | 79148 | 2026-02-26 16:31:56 |
| R33.htm | 24854 | 2026-02-26 16:31:56 |
| R34.htm | 119827 | 2026-02-26 16:31:56 |
| R35.htm | 13384 | 2026-02-26 16:31:56 |
| R36.htm | 21058 | 2026-02-26 16:31:56 |
| R37.htm | 4371 | 2026-02-26 16:31:56 |
| R38.htm | 52170 | 2026-02-26 16:31:56 |
| R39.htm | 157885 | 2026-02-26 16:31:56 |
| R4.htm | 23544 | 2026-02-26 16:31:56 |
| R40.htm | 64453 | 2026-02-26 16:31:56 |
| R41.htm | 110833 | 2026-02-26 16:31:56 |
| R42.htm | 39411 | 2026-02-26 16:31:56 |
| R43.htm | 1506071 | 2026-02-26 16:31:56 |
| R44.htm | 17653 | 2026-02-26 16:31:56 |
| R45.htm | 41681 | 2026-02-26 16:31:56 |
| R46.htm | 30603 | 2026-02-26 16:31:56 |
| R47.htm | 52455 | 2026-02-26 16:31:56 |
| R48.htm | 29565 | 2026-02-26 16:31:56 |
| R49.htm | 18522 | 2026-02-26 16:31:56 |
| R5.htm | 149268 | 2026-02-26 16:31:56 |
| R50.htm | 14947 | 2026-02-26 16:31:56 |
| R51.htm | 85230 | 2026-02-26 16:31:56 |
| R52.htm | 12362 | 2026-02-26 16:31:56 |
| R53.htm | 68604 | 2026-02-26 16:31:56 |
| R54.htm | 37550 | 2026-02-26 16:31:56 |
| R55.htm | 62071 | 2026-02-26 16:31:56 |
| R56.htm | 11997 | 2026-02-26 16:31:56 |
| R57.htm | 32705 | 2026-02-26 16:31:56 |
| R58.htm | 239215 | 2026-02-26 16:31:56 |
| R59.htm | 83625 | 2026-02-26 16:31:56 |
| R6.htm | 56289 | 2026-02-26 16:31:56 |
| R60.htm | 21165 | 2026-02-26 16:31:56 |
| R61.htm | 120522 | 2026-02-26 16:31:56 |
| R62.htm | 37923 | 2026-02-26 16:31:56 |
| R63.htm | 42664 | 2026-02-26 16:31:56 |
| R64.htm | 28079 | 2026-02-26 16:31:56 |
| R65.htm | 56157 | 2026-02-26 16:31:56 |
| R66.htm | 24765 | 2026-02-26 16:31:56 |
| R67.htm | 25837 | 2026-02-26 16:31:56 |
| R68.htm | 27680 | 2026-02-26 16:31:56 |
| R69.htm | 9914 | 2026-02-26 16:31:56 |
| R7.htm | 90051 | 2026-02-26 16:31:56 |
| R70.htm | 41967 | 2026-02-26 16:31:56 |
| R71.htm | 15594 | 2026-02-26 16:31:56 |
| R72.htm | 35285 | 2026-02-26 16:31:56 |
| R73.htm | 60214 | 2026-02-26 16:31:56 |
| R74.htm | 36307 | 2026-02-26 16:31:56 |
| R75.htm | 34507 | 2026-02-26 16:31:56 |
| R76.htm | 12409 | 2026-02-26 16:31:56 |
| R77.htm | 17631 | 2026-02-26 16:31:56 |
| R78.htm | 41471 | 2026-02-26 16:31:56 |
| R79.htm | 15013 | 2026-02-26 16:31:56 |
| R8.htm | 22193 | 2026-02-26 16:31:56 |
| R80.htm | 52038 | 2026-02-26 16:31:56 |
| R81.htm | 127264 | 2026-02-26 16:31:56 |
| R82.htm | 74585 | 2026-02-26 16:31:56 |
| R83.htm | 178964 | 2026-02-26 16:31:56 |
| R84.htm | 417118 | 2026-02-26 16:31:56 |
| R85.htm | 4326 | 2026-02-26 16:31:56 |
| R86.htm | 34459 | 2026-02-26 16:31:56 |
| R87.htm | 10226 | 2026-02-26 16:31:56 |
| R88.htm | 6879 | 2026-02-26 16:31:56 |
| R89.htm | 11130 | 2026-02-26 16:31:56 |
| R9.htm | 156102 | 2026-02-26 16:31:56 |
| R90.htm | 4043 | 2026-02-26 16:31:56 |
| R91.htm | 7212 | 2026-02-26 16:31:56 |
| R92.htm | 26467 | 2026-02-26 16:31:56 |
| R93.htm | 34133 | 2026-02-26 16:31:56 |
| R94.htm | 11281 | 2026-02-26 16:31:56 |
| R95.htm | 10340 | 2026-02-26 16:31:56 |
| R96.htm | 20678 | 2026-02-26 16:31:56 |
| R97.htm | 18164 | 2026-02-26 16:31:56 |
| R98.htm | 5886 | 2026-02-26 16:31:56 |
| R99.htm | 4921 | 2026-02-26 16:31:56 |
| report.css | 2768 | 2026-02-26 16:31:56 |
| Show.js | 1086 | 2026-02-26 16:31:56 |