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Business Combinations and Asset Acquisitions | 12 Months Ended
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Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract] |
Business Combination Disclosure [Text Block] | Business Combinations Bank of Commerce On October 1, 2021, the Company completed its acquisition of Bank of Commerce and its wholly-owned banking subsidiary Merchants Bank of Commerce. The Company acquired 100% of the equity interests of Bank of Commerce. The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting. The assets and liabilities, both tangible and intangible, were recorded at their fair values as of the October 1, 2021 acquisition date. Initial accounting for deferred taxes was incomplete as of December 31, 2021. The deferred taxes currently recognized in the financial statements have been determined provisionally as the final Bank of Commerce tax return has not yet been completed. The application of the acquisition method of accounting resulted in the recognition of goodwill of $57.3 million and a CDI of $15.9 million. The goodwill represents the excess of the purchase price over the fair value of the net assets acquired. The Company paid this premium for a number of reasons, including to expand the Company’s current footprint, enter the California market and the synergies and economies of scale expected from the acquisition. The goodwill is not deductible for income tax purposes. The table below summarizes the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed:
|  | October 1, 2021
|  | (in thousands)
Merger consideration |  | $ | 256,257 |
Identifiable net assets acquired, at fair value |  |  |  |
Assets acquired |  |  |  |
Cash and cash equivalents |  | $ | 155,180 |  |  |
Investment securities |  | 654,480 |  |  |
FHLB stock |  | 7,463 |  |  |
Loans, net allowance for credit loss |  | 1,084,984 |  |  |
Interest receivable |  | 5,237 |  |  |
Premises and equipment |  | 17,658 |  |  |
Core deposit intangible |  | 15,932 |  |  |
Other assets |  | 41,963 |  |  |
Total assets acquired |  |  |  | 1,982,897 |
Liabilities assumed |  |  |  |
Deposits |  | (1,737,584) |  |  |
Subordinated debentures |  | (10,000) |  |  |
Junior subordinated debentures |  | (10,310) |  |  |
Other liabilities |  | (26,076) |  |  |
Total liabilities assumed |  |  |  | (1,783,970) |
Total fair value of identifiable net assets |  |  |  | 198,927 |
Goodwill |  | $ | 57,330 |
See Note 9, “Goodwill and Other Intangible Assets,” for further discussion of the accounting for goodwill and other intangible assets. Of the $1.08 billion net loans acquired, $40.3 million exhibited credit deterioration on the date of purchase. The following table provides a summary of these PCD loans at acquisition:
|  | October 1, 2021
|  | (in thousands)
Par value of PCD loans acquired |  | $ | 43,419 |
PCD ACL at acquisition |  | (2,616) |
Non-credit discount on PCD loans |  | (525) |
Purchase price of PCD loans |  | $ | 40,278 |
The operating results of the Company reported herein include the operating results produced by the acquired assets and assumed liabilities for the period of October 1, 2021 to December 31, 2021. Disclosure of the amount of Bank of Commerce’s revenue and net income (excluding integration costs) included in Columbia’s Consolidated Statements of Income is impracticable due to the integration of the operations and accounting for this acquisition. For illustrative purposes only, the following table presents certain unaudited pro forma information for the year ended December 31, 2021 and 2020. This unaudited, estimated pro forma financial information was calculated as if Bank of Commerce had been acquired as of the beginning of the year prior to the date of acquisition. This unaudited pro forma information combines the historical results of Bank of Commerce with the Company’s consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the acquisition occurred as of the beginning of the year prior to the acquisition. The unaudited pro forma information does not consider any changes to the provision for credit losses resulting from recording loan assets at fair value. Additionally, Columbia expects to achieve further operating cost savings and other business synergies, including revenue growth as a result of the acquisition, which are not reflected in the pro forma amounts that follow. As a result, actual amounts would have differed from the unaudited pro forma information presented.
|  | Unaudited Pro Forma for the
|  | Years Ended December 31,
|  | 2021 |  | 2020
|  | (in thousands, except per share amounts)
Total revenues (net interest income plus noninterest income) |  | $ | 664,875 |  |  | $ | 660,857 |
Net income |  | $ | 221,637 |  |  | $ | 164,087 |
EPS - basic |  | $ | 2.85 |  |  | $ | 2.11 |
EPS - diluted |  | $ | 2.84 |  |  | $ | 2.10 |
The following table shows the impact of the acquisition-related expenses related to the acquisition of Bank of Commerce for the periods indicated to the various components of noninterest expense:
|  | Years ended December 31,
|  | 2021 |  | 2020 |  | 2019
|  | (in thousands)
Noninterest Expense |  |  |  |  |  |
Compensation and employee benefits |  | $ | 4,875 |  |  | $ | — |  |  | $ | — |
Occupancy |  | 271 |  |  | — |  |  | — |
Data processing |  | 287 |  |  | — |  |  | — |
Legal and professional fees |  | 4,429 |  |  | — |  |  | — |
Advertising and promotion |  | 9 |  |  | — |  |  | — |
Other |  | 499 |  |  | — |  |  | — |
Total impact of acquisition-related costs to noninterest expense |  | $ | 10,370 |  |  | $ | — |  |  | $ | — |
In addition, related to the recently announced transaction with Umpqua, the Company recognized $4.1 million of acquisition-related expenses for the year ended December 31, 2021.

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- Definition The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -URI http://asc.fasb.org/topic&trid=2303972 + Details
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