Goodwill (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Goodwill [Line Items]
Goodwill	$ 11,004	$ 11,004
Discount rate	12.82%
Capitalization rate	6.82%
Growth rate	6.00%
Percentage of fair value of goodwill in addition to carrying value as a result of income approach	60.00%
Percentage of potential increase in discount rate	27.00%
Current, used assumption of tangible book multiple	1.36
Assumption of the tangible book multiple	0.66
Goodwill [Member]
Goodwill [Line Items]
Fair value measurement assumptions	Significant assumptions used in the above methods include:Net income from our forward five-year operating budget, incorporating conservative growth and mix assumptions;A discount rate of 12.82% based on an internally derived cost of equity capital determined using the "build-up" method;A price to tangible book multiple of 1.36x, which was the median multiple adjusted for the Corporation's asset quality profile of non-assisted transactions for non-assisted commercial bank acquisitions during the 12 months ended September 30, 2015 for selling companies headquartered in the Eastern regional area as compiled by Boenning & Scattergood, Inc.; andA capitalization rate of 6.82% (discount rate of 12.82% adjusted for a conservative growth rate of 6.0%).The resulting fair value of the income approach resulted in the fair value of First United Corporation exceeding the carrying value by 60%.  Management stressed the assumptions used in the analysis to provide additional support for the derived value.  This stress testing showed that (i) the discount rate could increase to 27% before the excess would be eliminated in the tangible multiple method, and (ii) the assumption of the tangible book multiple could decline to 0.66x and still result in a fair value in excess of book value.  Based on the results of the evaluation, management concluded that the recorded value of goodwill at December 31, 2015 was not impaired.  However, future changes in strategy and/or market conditions could significantly impact these judgments and require adjustments to recorded asset balances. Management will continue to evaluate goodwill for impairment on an annual basis and as events occur or circumstances change.