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Business Combinations and Asset Acquisitions - Merger related expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Asset Acquisition [Line Items] |  |  |  |
Business Combination, Acquisition Related Costs - Communication | $ 0 | $ 0 | $ 20,000 | $ 0
Merger related expenses | 29,649 | 2,672 | 145,547 | 4,950
Umpqua Bank and Columbia Banking System Merger |  |  |  |
Asset Acquisition [Line Items] |  |  |  |
Business combination, acquisition related costs, Legal and Professional Fees | 5,108 | 2,531 | 54,527 | 3,530
Business Combination, Acquisition Related Costs - Personnel | 8,761 | 38 | 30,215 | 1,310
Business Combination, Acquisition Related Costs - Premises and Equipment | 14,010 | 57 | 35,275 | 57
Business Combination, Acquisition Related Costs - Other | 1,770 | 46 | 5,530 | 53
Merger related expenses | $ 29,649 | $ 2,672 | $ 145,547 | $ 4,950

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- Definition Business Combination, Acquisition Related Costs - Communication + 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 -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479405/805-10-25-23 + Details
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- Details
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