REGULATORY MATTERS (Schedule of capital amounts and ratios for southern national and sonabank) (Details) - Sonabank [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common equity tier 1 capital ratio, Actual Amount	$ 313,354	$ 288,018
Common equity tier 1 capital ratio, Actual Ratio	14.81%	13.64%
Common equity tier 1 capital ratio required for capital adequacy purposes amount	$ 95,229	$ 95,020
Common equity tier 1 capital ratio required for capital adequacy purposes ratio	4.50%	4.50%
Common equity tier 1 capital ratio, To Be Categorized as Well Capitalized Amount	$ 137,553	$ 137,251
Common equity tier 1 capital ratio, To Be Categorized as Well Capitalized Ratio	6.50%	6.50%
Tier 1 risk-based capital ratio, Actual Amount	$ 313,354	$ 288,018
Tier 1 risk-based capital ratio, Actual Ratio	14.81%	13.64%
Tier 1 risk-based capital ratio, Actual Ratio Required For Capital Adequacy Purposes, Amount	$ 126,972	$ 126,693
Tier 1 risk-based capital ratio, Actual Ratio Required For Capital Adequacy Purposes, Ratio	6.00%	6.00%
Tier 1 risk-based capital ratio, To Be Categorized as Well Capitalized, Amount	$ 169,296	$ 168,924
Tier 1 risk-based capital ratio, To Be Categorized as Well Capitalized, Ratio	8.00%	8.00%
Total risk-based capital ratio, Actual Amount	$ 323,615	$ 300,301
Total risk-based capital ratio, Actual Ratio	15.29%	14.22%
Total risk-based capital ratio, Actual Ratio Required For Capital Adequacy Purposes, Amount	$ 169,296	$ 168,924
Total risk-based capital ratio, Actual Ratio Required For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Total risk-based capital ratio, To Be Categorized as Well Capitalized, Amount	$ 211,619	$ 211,156
Total risk-based capital ratio, To Be Categorized as Well Capitalized, Ratio	10.00%	10.00%
Leverage ratio, Actual Amount	$ 313,354	$ 288,018
Leverage ratio, Actual Ratio	12.07%	11.03%
Leverage ratio, Actual Ratio Required For Capital Adequacy Purposes, Amount	$ 103,838	$ 104,420
Leverage ratio, Actual Ratio Required For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Leverage ratio, To Be Categorized as Well Capitalized, Amount	$ 105,810	$ 105,578
Leverage ratio, To Be Categorized as Well Capitalized, Ratio	5.00%	5.00%

Common equity tier 1 capital ratio required for capital adequacy purposes ratio.

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The amount of total capital as defined in the regulations.

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The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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Total Capital divided by risk weighted assets as defined in the regulations.

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Amount of Common Equity Tier One Risk-based Capital, as defined by regulatory framework.

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Percentage of Common Equity Tier One Risk-based Capital to total risk-weighted assets, as defined by regulatory framework.

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Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as adequately capitalized under regulatory framework for prompt corrective action.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action.

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The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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