Capital Requirements (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Consolidated [Member]
Total Capital (to Risk- Weighted Assets), Amount [Abstract]
Actual	$ 128,971	$ 124,313
Minimum Capital Requirement	60,857	62,577
Total Capital (to Risk- Weighted Assets), Ratio [Abstract]
Actual, Ratio (in hundredths)	17.00%	15.90%
Minimum Capital Requirement, Ratio (in hundredths)	8.00%	8.00%
Tier 1 Capital (to Risk- Weighted Assets), Amount [Abstract]
Actual	119,433	114,490
Minimum Capital Requirement	30,428	31,289
Tier 1 Capital (to Risk- Weighted Assets), Ratio [Abstract]
Actual, Ratio (in hundredths)	15.70%	14.60%
Minimum Capital Requirement, Ratio (in hundredths)	4.00%	4.00%
Tier 1 Capital (to Average Assets), Amount [Abstract]
Actual	119,433	114,490
Minimum Capital Requirement	48,232	48,550
Tier 1 Capital (to Average Assets), Ratio [Abstract]
Actual, Ratio (in hundredths)	9.90%	9.40%
Minimum Capital Requirement, Ratio (in hundredths)	4.00%	4.00%
Middleburg Bank [Member]
Total Capital (to Risk- Weighted Assets), Amount [Abstract]
Actual	123,801	120,015
Minimum Capital Requirement	60,660	62,417
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	75,825	78,022
Total Capital (to Risk- Weighted Assets), Ratio [Abstract]
Actual, Ratio (in hundredths)	16.30%	15.40%
Minimum Capital Requirement, Ratio (in hundredths)	8.00%	8.00%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	10.00%	10.00%
Tier 1 Capital (to Risk- Weighted Assets), Amount [Abstract]
Actual	114,293	110,217
Minimum Capital Requirement	30,330	31,209
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	45,495	46,813
Tier 1 Capital (to Risk- Weighted Assets), Ratio [Abstract]
Actual, Ratio (in hundredths)	15.10%	14.10%
Minimum Capital Requirement, Ratio (in hundredths)	4.00%	4.00%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	6.00%	6.00%
Tier 1 Capital (to Average Assets), Amount [Abstract]
Actual	114,293	110,217
Minimum Capital Requirement	48,141	48,484
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 60,176	$ 60,605
Tier 1 Capital (to Average Assets), Ratio [Abstract]
Actual, Ratio (in hundredths)	9.50%	9.10%
Minimum Capital Requirement, Ratio (in hundredths)	4.00%	4.00%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio (in hundredths)	5.00%	5.00%

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

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The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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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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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 minimum Tier One Capital Ratio (Tier one 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 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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