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Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2023
Broker-Dealer [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations | The following table shows the Company's consolidated and the Bank's capital adequacy ratios compared to the regulatory minimum capital ratio and the regulatory minimum capital ratio needed to qualify as a "well-capitalized" institution, as calculated under regulatory guidelines of Basel III as of December 31, 2023 and 2022:
| Actual |  | For Capital Adequacy Purposes |  | To be Well Capitalized
(dollars in thousands) | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 4,770,335 |  |  | 11.86 | % |  | $ | 3,218,301 |  |  | 8.00 | % |  | $ | 4,022,876 |  |  | 10.00 | %
Umpqua Bank | $ | 4,653,920 |  |  | 11.57 | % |  | $ | 3,217,821 |  |  | 8.00 | % |  | $ | 4,022,276 |  |  | 10.00 | %
Tier 1 Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 3,876,985 |  |  | 9.64 | % |  | $ | 2,413,726 |  |  | 6.00 | % |  | $ | 3,218,301 |  |  | 8.00 | %
Umpqua Bank | $ | 4,231,569 |  |  | 10.52 | % |  | $ | 2,413,366 |  |  | 6.00 | % |  | $ | 3,217,821 |  |  | 8.00 | %
Tier 1 Common (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 3,876,985 |  |  | 9.64 | % |  | $ | 1,810,294 |  |  | 4.50 | % |  | $ | 2,614,869 |  |  | 6.50 | %
Umpqua Bank | $ | 4,231,569 |  |  | 10.52 | % |  | $ | 1,810,024 |  |  | 4.50 | % |  | $ | 2,614,479 |  |  | 6.50 | %
Tier 1 Capital (to Average Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 3,876,985 |  |  | 7.60 | % |  | $ | 2,040,344 |  |  | 4.00 | % |  | $ | 2,550,431 |  |  | 5.00 | %
Umpqua Bank | $ | 4,231,569 |  |  | 8.30 | % |  | $ | 2,040,489 |  |  | 4.00 | % |  | $ | 2,550,611 |  |  | 5.00 | %
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |
Total Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 3,651,382 |  |  | 13.71 | % |  | $ | 2,130,565 |  |  | 8.00 | % |  | $ | 2,663,207 |  |  | 10.00 | %
Umpqua Bank | $ | 3,440,574 |  |  | 12.92 | % |  | $ | 2,130,240 |  |  | 8.00 | % |  | $ | 2,662,799 |  |  | 10.00 | %
Tier 1 Capital (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 2,934,708 |  |  | 11.02 | % |  | $ | 1,597,924 |  |  | 6.00 | % |  | $ | 2,130,565 |  |  | 8.00 | %
Umpqua Bank | $ | 3,174,899 |  |  | 11.92 | % |  | $ | 1,597,680 |  |  | 6.00 | % |  | $ | 2,130,240 |  |  | 8.00 | %
Tier 1 Common (to Risk Weighted Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 2,934,708 |  |  | 11.02 | % |  | $ | 1,198,443 |  |  | 4.50 | % |  | $ | 1,731,084 |  |  | 6.50 | %
Umpqua Bank | $ | 3,174,899 |  |  | 11.92 | % |  | $ | 1,198,260 |  |  | 4.50 | % |  | $ | 1,730,820 |  |  | 6.50 | %
Tier 1 Capital (to Average Assets) |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 2,934,708 |  |  | 9.14 | % |  | $ | 1,283,669 |  |  | 4.00 | % |  | $ | 1,604,586 |  |  | 5.00 | %
Umpqua Bank | $ | 3,174,899 |  |  | 9.89 | % |  | $ | 1,283,610 |  |  | 4.00 | % |  | $ | 1,604,513 |  |  | 5.00 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1B + Details
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