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REGULATORY CAPITAL REQUIREMENTS (Tables) | 12 Months Ended
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Dec. 31, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Schedule of the Regulatory Capital Ratios and Minimum Regulatory Requirements | The following table shows the regulatory capital ratios of the Company and the Bank and the minimum regulatory requirements (dollars in thousands):
| Actual |  | Minimum for Capital Adequacy Purposes |  | Minimum to be Categorized as “Well Capitalized” Under Prompt Corrective Action Provisions
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
December 31, 2023: |  |  |  |  |  |  |  |  |  |  |
Banner Corporation—consolidated: |  |  |  |  |  |  |  |  |  |  |
Total capital to risk-weighted assets | $ | 1,904,533 |  |  | 14.58 | % |  | $ | 1,045,181 |  |  | 8.00 | % |  | $ | 1,306,476 |  |  | 10.00 | %
Tier 1 capital to risk-weighted assets | 1,650,872 |  |  | 12.64 |  |  | 783,886 |  |  | 6.00 |  |  | 783,886 |  |  | 6.00 |
Tier 1 capital to average leverage assets | 1,650,872 |  |  | 10.56 |  |  | 625,387 |  |  | 4.00 |  |  | n/a |  | n/a
Tier 1 common equity to risk-weighted assets | 1,564,372 |  |  | 11.97 |  |  | 587,914 |  |  | 4.50 |  |  | n/a |  | n/a
Banner Bank: |  |  |  |  |  |  |  |  |  |  |
Total capital to risk-weighted assets | 1,789,371 |  |  | 13.69 |  |  | 1,045,273 |  |  | 8.00 |  |  | 1,306,592 |  |  | 10.00 |
Tier 1 capital to risk-weighted assets | 1,635,710 |  |  | 12.52 |  |  | 783,955 |  |  | 6.00 |  |  | 1,045,273 |  |  | 8.00 |
Tier 1 capital to average leverage assets | 1,635,710 |  |  | 10.46 |  |  | 625,298 |  |  | 4.00 |  |  | 781,622 |  |  | 5.00 |
Tier 1 common equity to risk-weighted assets | 1,635,710 |  |  | 12.52 |  |  | 587,966 |  |  | 4.50 |  |  | 849,285 |  |  | 6.50 |
December 31, 2022: |  |  |  |  |  |  |  |  |  |  |
Banner Corporation—consolidated: |  |  |  |  |  |  |  |  |  |  |
Total capital to risk-weighted assets | $ | 1,769,064 |  |  | 14.04 | % |  | $ | 1,008,232 |  |  | 8.00 | % |  | $ | 1,260,290 |  |  | 10.00 | %
Tier 1 capital to risk-weighted assets | 1,528,694 |  |  | 12.13 |  |  | 756,174 |  |  | 6.00 |  |  | 756,174 |  |  | 6.00 |
Tier 1 capital to average leverage assets | 1,528,694 |  |  | 9.45 |  |  | 647,345 |  |  | 4.00 |  |  | n/a |  | n/a
Tier 1 common equity to risk-weighted assets | 1,442,194 |  |  | 11.44 |  |  | 567,130 |  |  | 4.50 |  |  | n/a |  | n/a
Banner Bank: |  |  |  |  |  |  |  |  |  |  |
Total capital to risk-weighted assets | 1,684,766 |  |  | 13.38 |  |  | 1,007,325 |  |  | 8.00 |  |  | 1,259,156 |  |  | 10.00 |
Tier 1 capital to risk-weighted assets | 1,544,396 |  |  | 12.27 |  |  | 755,494 |  |  | 6.00 |  |  | 1,007,325 |  |  | 8.00 |
Tier 1 capital to average leverage assets | 1,544,396 |  |  | 9.55 |  |  | 646,935 |  |  | 4.00 |  |  | 808,668 |  |  | 5.00 |
Tier 1 common equity to risk-weighted assets | 1,544,396 |  |  | 12.27 |  |  | 566,620 |  |  | 4.50 |  |  | 818,452 |  |  | 6.50 |

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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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