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REGULATORY MATTERS AND CAPITAL | 12 Months Ended
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Dec. 31, 2023
Regulatory Capital Requirements [Abstract] |
REGULATORY MATTERS AND CAPITAL | 12. REGULATORY MATTERS AND CAPITAL Capital resources represent funds, earned or obtained, over which financial institutions can exercise greater or longer control in comparison with deposits and borrowed funds. Management seeks to maintain a capital structure that will assure an adequate level of capital to support anticipated asset growth and to absorb potential losses, yet allow management to effectively leverage its capital to maximize return to shareholders. 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 financial statements of the Company and the Bank. Under capital adequacy guidelines and the regulatory framework for PCA, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. PCA provisions are not applicable to financial holding companies and bank holding companies, but only to their bank subsidiaries. As of December 31, 2023 and 2022, the most recent notification from the FRB categorized the Bank as “well capitalized” under the regulatory framework for PCA. To be categorized as “well-capitalized,” an institution must maintain minimum total risk-based, Tier 1 risk-based, Tier 1 leverage, and common equity Tier 1 ratios as set forth in the following tables. There are no conditions or events since that notification that management believes have changed the Bank’s category. On August 26, 2020, the federal bank regulatory agencies adopted a final rule that allowed the Company to phase in the impact of adopting the CECL methodology up to two years, with a three-year transition period to phase out the cumulative benefit to regulatory capital provided during the two-year delay. Refer to Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section “Capital Resources” of this Form 10-K for additional information regarding the impact of this final rule on the Company’s regulatory capital. ​ ​ The Company and the Bank’s capital amounts and ratios are also presented in the following table as of December 31, (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Required in Order to Be |
​ | ​ | ​ | ​ | ​ | ​ | ​ | Required for Capital | ​ | Well Capitalized Under |
​ | ​ | Actual | ​ | Adequacy Purposes (1) | ​ | PCA |
​ |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |
2023 |  | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  | ​
Common equity Tier 1 capital to risk weighted assets: |  | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  | ​
Consolidated | ​ | $ | 1,790,183 |  | 9.84 | % | $ | 818,681 | ​ | 4.50% | ​ | NA | ​ | NA | ​
Atlantic Union Bank | ​ |  | 2,256,291 |  | 12.48 | % |  | 813,566 | ​ | 4.50% | ​ | 1,175,152 | ​ | 6.50% | ​
Tier 1 capital to risk weighted assets: | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Consolidated | ​ |  | 1,956,539 |  | 10.76 | % |  | 1,091,007 | ​ | 6.00% | ​ | NA | ​ | NA | ​
Atlantic Union Bank | ​ |  | 2,256,291 |  | 12.48 | % |  | 1,084,755 | ​ | 6.00% | ​ | 1,446,340 | ​ | 8.00% | ​
Total capital to risk weighted assets: | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Consolidated | ​ |  | 2,464,817 |  | 13.55 | % |  | 1,455,243 | ​ | 8.00% | ​ | NA | ​ | NA | ​
Atlantic Union Bank | ​ |  | 2,378,204 |  | 13.15 | % |  | 1,446,816 | ​ | 8.00% | ​ | 1,808,520 | ​ | 10.00% | ​
Tier 1 capital to average adjusted assets: | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Consolidated | ​ |  | 1,956,539 |  | 9.63 | % |  | 812,685 | ​ | 4.00% | ​ | NA | ​ | NA | ​
Atlantic Union Bank | ​ |  | 2,256,291 |  | 11.16 | % |  | 808,706 | ​ | 4.00% | ​ | 1,010,883 | ​ | 5.00% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
2022 | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Common equity Tier 1 capital to risk weighted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ | $ | 1,684,088 |  | 9.95 | % | $ | 761,648 |  | 4.50% | ​ | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 2,154,594 |  | 12.81 | % |  | 756,883 |  | 4.50% | ​ | 1,093,276 |  | 6.50% | ​
Tier 1 capital to risk weighted assets: | ​ |  | ​ |  | ​ | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​
Consolidated | ​ |  | 1,850,444 |  | 10.93 | % |  | 1,014,869 |  | 6.00% | ​ | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 2,154,594 |  | 12.81 | % |  | 1,009,178 |  | 6.00% | ​ | 1,345,570 |  | 8.00% | ​
Total capital to risk weighted assets: | ​ |  | ​ |  | ​ | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​
Consolidated | ​ |  | 2,319,160 |  | 13.70 | % |  | 1,354,254 |  | 8.00% | ​ | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 2,238,106 |  | 13.30 | % |  | 1,346,229 |  | 8.00% | ​ | 1,682,786 |  | 10.00% | ​
Tier 1 capital to average adjusted assets: | ​ |  | ​ |  | ​ | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​
Consolidated | ​ |  | 1,850,444 |  | 9.42 | % |  | 785,751 |  | 4.00% | ​ | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 2,154,594 |  | 11.02 | % |  | 782,067 |  | 4.00% | ​ | 977,583 |  | 5.00% | ​
(1) Amounts and ratios shown do not include the impact of a capital conservation buffer of 2.50%. ​

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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 -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(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 1 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1D Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480696/942-505-50-1F + Details
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