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Business Combinations and Asset Acquisitions - Merger related expense (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Asset Acquisition [Line Items] |  |
Business Combination, Acquisition Related Costs - Communication | $ 20,000 |
Merger related expenses | 115,898 | $ 2,278
Umpqua Bank and Columbia Banking System Merger |  |
Asset Acquisition [Line Items] |  |
Business combination, acquisition related costs, Legal and Professional Fees | 49,419 |
Business Combination, Acquisition Related Costs - Personnel | 21,455 |
Business Combination, Acquisition Related Costs - Premises and Equipment | 21,265 |
Business Combination, Acquisition Related Costs - Other | 3,759 |
Merger related expenses | $ 115,898 |

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- Definition Business Combination, Acquisition Related Costs - Communication + References No definition available. + Details
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- Definition Business combination, acquisition related costs, Legal and Professional Fees + References No definition available. + Details
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- Definition Business Combination, Acquisition Related Costs - Other + References No definition available. + Details
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- Definition Business Combination, Acquisition Related Costs - Personnel + References No definition available. + Details
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- Definition Business Combination, Acquisition Related Costs - Premises and Equipment + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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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. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI https://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460 + Details
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- Details
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