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REGULATORY MATTERS AND CAPITAL (Tables) | 12 Months Ended
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Dec. 31, 2020
Regulatory Capital Requirements [Abstract] |
Schedule of Bank Capital Amount and Ratio | The Company and the Bank’s capital amounts and ratios are also presented in the following table at December 31, 2020 and 2019 (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Required in Order to Be |
​ | ​ | ​ | ​ | ​ | ​ | ​ | Required for Capital | ​ | Well Capitalized Under |
​ | ​ | Actual | ​ | Adequacy Purposes | ​ | PCA |
​ |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |
As of December 31, 2020 |  | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  | ​
Common equity Tier 1 capital to risk weighted assets: |  | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  | ​
Consolidated | ​ | $ | 1,512,507 |  | 10.26 | % | $ | 663,380 |  | 4.50 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,824,693 |  | 12.42 | % |  | 661,121 |  | 4.50 | % | 954,952 |  | 6.50 | %
Tier 1 capital to risk weighted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ |  | 1,678,863 |  | 11.39 | % |  | 884,388 |  | 6.00 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,824,693 |  | 12.42 | % |  | 881,494 |  | 6.00 | % | 1,175,326 |  | 8.00 | %
Total capital to risk weighted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ |  | 2,063,356 |  | 14.00 | % |  | 1,179,061 |  | 8.00 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,924,016 |  | 13.09 | % |  | 1,175,869 |  | 8.00 | % | 1,469,837 |  | 10.00 | %
Tier 1 capital to average adjusted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ |  | 1,678,863 |  | 8.95 | % |  | 750,330 |  | 4.00 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,824,693 |  | 9.75 | % |  | 748,592 |  | 4.00 | % | 935,740 |  | 5.00 | %
As of December 31, 2019 | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Common equity Tier 1 capital to risk weighted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ | $ | 1,437,908 |  | 10.24 | % | $ | 631,893 |  | 4.50 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,704,426 |  | 12.18 | % |  | 629,714 |  | 4.50 | % | 909,587 |  | 6.50 | %
Tier 1 capital to risk weighted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ |  | 1,437,908 |  | 10.24 | % |  | 842,524 |  | 6.00 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,704,426 |  | 12.18 | % |  | 839,619 |  | 6.00 | % | 1,119,492 |  | 8.00 | %
Total capital to risk weighted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ |  | 1,773,835 |  | 12.63 | % |  | 1,123,569 |  | 8.00 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,747,620 |  | 12.48 | % |  | 1,120,269 |  | 8.00 | % | 1,400,337 |  | 10.00 | %
Tier 1 capital to average adjusted assets: | ​ |  |  |  |  | ​ |  |  |  |  |  |  |  |  | ​
Consolidated | ​ |  | 1,437,908 |  | 8.79 | % |  | 654,338 |  | 4.00 | % | NA |  | NA | ​
Atlantic Union Bank | ​ |  | 1,704,426 |  | 10.45 | % |  | 652,412 |  | 4.00 | % | 815,515 |  | 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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 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)(1) -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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