Equity Compensation Plan Information (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	May. 31, 2014	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Share-based compensation arrangement by share-based payment award, description					On June 18, 2008, the Board of Directors of First United Corporation adopted a Long-Term Incentive Program (the "LTIP"). This program was adopted as a sub-plan of the Omnibus Plan to reward participants for increasing shareholder value, align executive interests with those of shareholders, and serve as a retention tool for key executives. Under the LTIP, participants are granted shares of restricted common stock of First United Corporation. The amount of an award is based on a specified percentage of the participant's salary as of the date of grant. These shares will vest if the Corporation meets or exceeds certain performance thresholds.
Deferred compensation arrangement with individual, description					Stock-based awards were made to non-employee directors in May 2015 pursuant to First United Corporation's director compensation policy. Beginning May 2014, each director's annual retainer is paid in 1,000 shares of common stock, with the remainder of $10,000 paid in cash or any portion thereof, in shares of stock. Prior to May 2014, the retainer of the 1,000 shares of stock was paid in shares of stock in the amount of $5,000.
Director [Member]
Issued fully-vested common stock shares					16,022
Per share fair market value of issued fully vested common stock shares					$ 8.96
Shares issued to Director	1,000
Cash paid to Director	$ 10,000
Director stock compensation expense					111,848	$ 95,035
Stock compensation expense		$ 35,889		$ 39,025
Director Prior to May 2014 [Member]
Director stock compensation expense							$ 5,000
Executive [Member]
Stock compensation expense		$ 11,382			$ 32,094
Maximum [Member]
Maximum issuance of common stock options		185,000			185,000
Restricted Stock [Member] | Two Executive Officers [Member]
LTEP vesting period					2 years
Shares granted, other than options			10,232