Effective Tax Rate as a Percentage of pre-tax Income (loss)

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- Definition

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates.

+ References

No definition available.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2023	Jun. 30, 2022	Feb. 28, 2023
Income Tax Contingency [Line Items]
Deferred Tax Assets, Net	$ 351.2
Effective Tax Rate as a Percentage of pre-tax Income (loss)	25.80%	25.00%
Umpqua Bank and Columbia Banking System Merger
Income Tax Contingency [Line Items]
Deferred Tax Assets, Net			$ 199.9
Operating Loss Carryforwards			$ 2.4
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Operating Loss Carryforwards	$ 42.4
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	39.5
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 2.9