Regulatory Capital Requirements (Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital	$ 158,108	$ 164,081
Capital to Risk Weighted Assets	15.98%	16.71%
Capital Required for Capital Adequacy	$ 78,954	$ 78,577
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Capital Required to be Well Capitalized	$ 98,693	$ 98,221
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Tier One Risk Based Capital	$ 148,072	$ 145,008
Tier One Risk Based Capital to Risk Weighted Assets	14.97%	14.76%
Tier One Risk Based Capital Required for Capital Adequacy	$ 59,216	$ 58,933
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Tier One Risk Based Capital Required to be Well Capitalized	$ 78,954	$ 78,577
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	8.00%
Common equity, Amount	$ 124,064	$ 105,523
Common equity, Ratio	12.54%	10.74%
Common equity, Required For Capital Adequacy Purposes, Amount	$ 44,412	$ 44,200
Common equity, Required For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Common equity, Required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 64,150	$ 63,844
Common equity, Required To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier One Leverage Capital	$ 148,072	$ 145,008
Tier One Leverage Capital to Average Assets	11.00%	10.95%
Tier One Leverage Capital Required for Capital Adequacy	$ 53,646	$ 53,124
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 67,058	$ 66,404
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
First United Bank & Trust [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital	$ 145,921	$ 155,992
Capital to Risk Weighted Assets	15.58%	16.70%
Capital Required for Capital Adequacy	$ 74,739	$ 74,733
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Capital Required to be Well Capitalized	$ 93,424	$ 93,416
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Tier One Risk Based Capital	$ 135,885	$ 146,013
Tier One Risk Based Capital to Risk Weighted Assets	14.51%	15.63%
Tier One Risk Based Capital Required for Capital Adequacy	$ 56,054	$ 56,050
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Tier One Risk Based Capital Required to be Well Capitalized	$ 74,739	$ 74,733
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	8.00%
Common equity, Amount	$ 135,885	$ 146,013
Common equity, Ratio	14.51%	15.63%
Common equity, Required For Capital Adequacy Purposes, Amount	$ 42,041	$ 42,037
Common equity, Required For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Common equity, Required To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 60,726	$ 60,721
Common equity, Required To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier One Leverage Capital	$ 135,885	$ 146,013
Tier One Leverage Capital to Average Assets	10.21%	11.11%
Tier One Leverage Capital Required for Capital Adequacy	$ 52,801	$ 52,321
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 66,001	$ 65,401
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%

Common equity, tier one risk based capital required for capital adequacy.

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Common equity, tier one risk based capital required to be well capitalized.

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Common equity, tier one risk based capital required to be well capitalized to risk weighted assets

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Common equity, tier one risk based capital.

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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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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 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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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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