Annual report pursuant to Section 13 and 15(d)

REGULATORY MATTERS AND CAPITAL (Schedule of Bank Capital and Ratio) (Details)

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REGULATORY MATTERS AND CAPITAL (Schedule of Bank Capital and Ratio) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier 1 capital to risk weighted assets, actual amount $ 1,437,908 $ 1,106,871
Common Equity Tier 1 capital to risk weighted assets, actual ratio 10.24% 9.93%
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 631,893 $ 501,608
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, ratio 4.50% 4.50%
Tier 1 capital to risk weighted assets, actual amount $ 1,437,908 $ 1,236,709
Tier 1 capital to risk weighted assets, actual ratio 10.24% 11.09%
Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 842,524 $ 668,817
Tier 1 capital ratio of risk-weighted assets, required for capital adequacy purposes, ratio 6.00% 6.00%
Total capital to risk weighted assets, actual amount $ 1,773,835 $ 1,435,711
Total capital to risk weighted assets, actual ratio 12.63% 12.88%
Total capital to risk weighted assets, Required for Capital adequacy purposes, amount $ 1,123,569 $ 891,753
Total capital to risk weighted assets, required for capital adequacy purposes, ratio 8.00% 8.00%
Tier 1 capital to average adjusted assets, actual amount $ 1,437,908 $ 1,236,709
Tier 1 capital to average adjusted assets, actual ratio 8.79% 9.71%
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, amount $ 654,338 $ 509,678
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, ratio 4.00% 4.00%
Atlantic Union Bank    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Common Equity Tier 1 capital to risk weighted assets, actual amount $ 1,704,426 $ 1,378,039
Common Equity Tier 1 capital to risk weighted assets, actual ratio 12.18% 12.40%
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 629,714 $ 500,224
Common Equity Tier 1 capital to risk weighted assets, required for capital adequacy purposes, ratio 4.50% 4.50%
Common Equity Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 909,587 $ 722,546
Common Equity Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 6.50% 6.50%
Tier 1 capital to risk weighted assets, actual amount $ 1,704,426 $ 1,378,039
Tier 1 capital to risk weighted assets, actual ratio 12.18% 12.40%
Tier 1 capital to risk weighted assets, required for capital adequacy purposes, amount $ 839,619 $ 666,965
Tier 1 capital ratio of risk-weighted assets, required for capital adequacy purposes, ratio 6.00% 6.00%
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 1,119,492 $ 889,287
Tier 1 capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 8.00% 8.00%
Total capital to risk weighted assets, actual amount $ 1,747,620 $ 1,419,984
Total capital to risk weighted assets, actual ratio 12.48% 12.77%
Total capital to risk weighted assets, Required for Capital adequacy purposes, amount $ 1,120,269 $ 889,289
Total capital to risk weighted assets, required for capital adequacy purposes, ratio 8.00% 8.00%
Total capital to risk weighted assets, required in order to be well capitalized under PCA, amount $ 1,400,337 $ 1,111,612
Total capital to risk weighted assets, required in order to be well capitalized under PCA, ratio 10.00% 10.00%
Tier 1 capital to average adjusted assets, actual amount $ 1,704,426 $ 1,378,039
Tier 1 capital to average adjusted assets, actual ratio 10.45% 10.84%
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, amount $ 652,412 $ 508,412
Tier 1 capital to average adjusted assets, required for capital adequacy purposes, ratio 4.00% 4.00%
Tier 1 capital to average adjusted assets, required in order to be well capitalized under PCA, amount $ 815,515 $ 635,515
Tier 1 capital to average adjusted assets, required in order to be well capitalized under PCA, ratio 5.00% 5.00%