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Regulatory Capital Requirements | 12 Months Ended
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Dec. 31, 2022
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] |
Regulatory Capital Requirements [Text Block] | Regulatory Capital RequirementsThe Company (on a consolidated basis) and its banking subsidiary are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company and its banking subsidiary’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and its banking subsidiary must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies. The capital requirements, among other things (i) specify that Tier 1 capital consists of CET1, and “Additional Tier 1 capital” instruments meeting specified requirements, (ii) define CET1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital and (iii) expand the scope of the deductions/adjustments to capital as compared to existing regulations. Under the requirements that are now effective, the minimum capital ratios are (i) 4.5% CET1 to risk-weighted assets, (ii) 6% Tier 1 capital to risk-weighted assets, (iii) 8% total capital to risk-weighted assets and (iv) 4% Tier 1 capital to average total assets (Tier 1 leverage). The Company and the Bank have made the one-time election to opt-out of including accumulated other comprehensive income items in regulatory capital calculations. The Capital Rules also require a capital conservation buffer designed to absorb losses during periods of economic stress. The capital conservation buffer is composed entirely of CET1, on top of these minimum risk-weighted asset ratios. In addition, the Capital Rules provide for a countercyclical capital buffer applicable only to certain covered institutions. We do not expect the countercyclical capital buffer to be applicable to us or the Bank. Banking institutions with a ratio of CET1 to risk-weighted assets above the minimum but below the capital conservation buffer (or below the combined capital conservation buffer and countercyclical capital buffer, when the latter is applied) will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall. The capital conservation buffer is set at 2.5% of CET1, effectively resulting in minimum ratios of (i) 7% CET1 to risk-weighted assets, (ii) 8.5% Tier 1 capital to risk-weighted assets, and (iii) 10.5% total capital to risk-weighted assets. At December 31, 2022, the capital conservation buffer for the Company and the Bank was 5.98% and 5.97%, respectively. As of December 31, 2022, we and the Bank met all capital adequacy requirements under the Capital Rules. FDIC regulations set forth the qualifications necessary for a bank to be classified as “well-capitalized,” primarily for assignment of FDIC insurance premium rates. To qualify as “well-capitalized,” banks must have a CET1 risk-adjusted capital ratio of 6.5%, a Tier I risk-adjusted capital ratio of at least 8%, a total risk-adjusted capital ratio of at least 10% and a leverage ratio of at least 5%. Failure to qualify as “well-capitalized” can negatively impact a bank’s ability to expand and to engage in certain activities. As of December 31, 2022, the most recent notification from the FDIC categorized Columbia Bank as well-capitalized under the regulatory framework for prompt corrective action. To be categorized as well- capitalized, an institution must maintain minimum CET1 risk-based, Tier 1 risk-based, total risk-based and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since the notification that management believes have changed Columbia Bank’s category. The Company and its banking subsidiary’s actual capital amounts and ratios as of December 31, 2022 and 2021 are presented in the following table:
|  | Actual |  | Minimum Required For Capital Adequacy Purposes |  | Minimum Required Plus Capital Conservation Buffer |  | To Be Well Capitalized Under Prompt Corrective Action Provision
Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
|  | (dollars in thousands)
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,885,860 |  |  | 12.87 | % |  | $ | 659,248 |  |  | 4.50 | % |  | $ | 1,025,498 |  |  | 7.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,892,755 |  |  | 12.93 | % |  | $ | 658,773 |  |  | 4.50 | % |  | $ | 1,024,758 |  |  | 7.00 | % |  | $ | 951,561 |  |  | 6.50 | %
Tier 1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,885,860 |  |  | 12.87 | % |  | $ | 878,998 |  |  | 6.00 | % |  | $ | 1,245,247 |  |  | 8.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,892,755 |  |  | 12.93 | % |  | $ | 878,364 |  |  | 6.00 | % |  | $ | 1,244,349 |  |  | 8.50 | % |  | $ | 1,171,152 |  |  | 8.00 | %
Total Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 2,048,700 |  |  | 13.98 | % |  | $ | 1,171,997 |  |  | 8.00 | % |  | $ | 1,538,246 |  |  | 10.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 2,045,595 |  |  | 13.97 | % |  | $ | 1,171,152 |  |  | 8.00 | % |  | $ | 1,537,137 |  |  | 10.50 | % |  | $ | 1,463,940 |  |  | 10.00 | %
Tier 1 Capital Leverage (to average assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,885,860 |  |  | 9.34 | % |  | $ | 807,791 |  |  | 4.00 | % |  | $ | 807,791 |  |  | 4.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,892,755 |  |  | 9.47 | % |  | $ | 799,485 |  |  | 4.00 | % |  | $ | 799,485 |  |  | 4.00 | % |  | $ | 999,356 |  |  | 5.00 | %
December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,710,981 |  |  | 13.01 | % |  | $ | 591,585 |  |  | 4.50 | % |  | $ | 920,244 |  |  | 7.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,716,186 |  |  | 13.06 | % |  | $ | 591,154 |  |  | 4.50 | % |  | $ | 919,754 |  |  | 7.00 | % |  | $ | 853,890 |  |  | 6.50 | %
Tier 1 Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,710,981 |  |  | 13.01 | % |  | $ | 788,780 |  |  | 6.00 | % |  | $ | 1,117,439 |  |  | 8.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,716,186 |  |  | 13.06 | % |  | $ | 788,206 |  |  | 6.00 | % |  | $ | 1,116,625 |  |  | 8.50 | % |  | $ | 1,050,941 |  |  | 8.00 | %
Total Capital (to risk-weighted assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,868,192 |  |  | 14.21 | % |  | $ | 1,051,707 |  |  | 8.00 | % |  | $ | 1,380,366 |  |  | 10.50 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,863,397 |  |  | 14.18 | % |  | $ | 1,050,941 |  |  | 8.00 | % |  | $ | 1,379,360 |  |  | 10.50 | % |  | $ | 1,313,677 |  |  | 10.00 | %
Tier 1 Capital Leverage (to average assets): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Company |  | $ | 1,710,981 |  |  | 8.55 | % |  | $ | 800,615 |  |  | 4.00 | % |  | $ | 800,615 |  |  | 4.00 | % |  | N/A |  | N/A
Columbia Bank |  | $ | 1,716,186 |  |  | 8.60 | % |  | $ | 798,206 |  |  | 4.00 | % |  | $ | 798,206 |  |  | 4.00 | % |  | $ | 997,757 |  |  | 5.00 | %

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- Definition The entire disclosure for regulatory capital requirement for depository and lending institutions. Institutions include, but not are not limited to, finance company, insured depository institution, bank holding company, savings and loan association holding company, bank and savings institution not federally insured, mortgage company, foreign financial institution and credit union. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1F -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958575-112826 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958569-112826 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1D -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958573-112826 + Details
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