XML 59 R46.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Leases [Abstract] |
Operating Leases by balance sheet location [Table Text Block] | The following table shows the details of the Company’s operating lease right-of-use asset and the associated lease liability for the period indicated:
|  |  |  | December 31,
Item |  | Balance Sheet Location |  | 2021 |  | 2020
|  |  |  | (in thousands)
Operating lease asset |  | Other assets |  | $ | 60,296 |  |  | $ | 61,863 |
Operating lease liability |  | Other liabilities |  | $ | 66,375 |  |  | $ | 67,503 |
Lease, Cost [Table Text Block] | The following table shows the components of net lease costs:
|  |  |  | Years Ended December 31,
Item |  | Statement of Income Location |  | 2021 |  | 2020 |  | 2019
|  |  |  | (in thousands)
Operating lease cost (1) |  | Occupancy |  | $ | 11,760 |  |  | $ | 11,073 |  |  | $ | 10,851 |
Variable lease cost |  | Occupancy |  | 1,800 |  |  | 1,732 |  |  | 1,805 |
Sublease income |  | Occupancy |  | (1,562) |  |  | (1,454) |  |  | (1,182) |
Net lease cost |  | $ | 11,998 |  |  | $ | 11,351 |  |  | $ | 11,474 |
__________ (1) Includes short-term lease costs, which are immaterial.
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] | The following table shows the maturity analysis for operating leases as of December 31, 2021:
|  | Years Ending December 31,
|  | (in thousands)
2022 |  | $ | 12,477 |
2023 |  | 10,845 |
2024 |  | 9,926 |
2025 |  | 8,616 |
2026 |  | 7,395 |
Thereafter |  | 23,753 |
Total future minimum lease payments |  | 73,012 |
Amounts representing interest |  | (6,637) |
Present value of minimum lease payments |  | $ | 66,375 |

X
- Definition [Table Text Block] for Operating Leases by balance sheet location [Table] + References No definition available. + Details
Name: | colb_OperatingLeasesbybalancesheetlocationTableTextBlock
Namespace Prefix: | colb_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration