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Business Combinations and Asset Acquisitions - acquisition-related expenses (Details) - Bank of Commerce - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | $ 5,593 | $ 10,370 | $ 0
Compensation and employee benefits [Member] |  |  |
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | 1,753 | 4,875 | 0
Occupancy [Member] |  |  |
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | 928 | 271 | 0
Data processing [Member] |  |  |
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | 1,584 | 287 | 0
Legal and professional fees [Member] |  |  |
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | 414 | 4,429 | 0
Advertising and promotion [Member] |  |  |
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | 18 | 9 | 0
Other noninterest expenses [Member] |  |  |
Asset Acquisition [Line Items] |  |  |
Business Combination, Acquisition Related Costs | $ 896 | $ 499 | $ 0

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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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