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Equity Compensation Plan Information (Narrative) (Details) - USD ($)		1 Months Ended		3 Months Ended			6 Months Ended
	Mar. 26, 2020	Jun. 30, 2020	May 31, 2019	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Deferred Compensation Arrangement with Individual, Description							Stock based awards were made to non employee directors in June 2020 pursuant to First United Corporation’s director compensation policy. Each director receives an annual retainer of 1,000 shares of First United Corporation common stock, plus $10,000 to be paid, at the director’s election, in cash or additional shares of common stock.
Maximum [Member]
Maximum issuance of common stock options		325,000		325,000			325,000
Director [Member]
Shares issued to Director			1,000
Cash paid to Director			$ 10,000
Fully vested shares of common stock issued, per share value		$ 14.52		$ 14.52			$ 14.52
Issued fully-vested common stock shares		13,160
Stock compensation expense				$ 39,698		$ 66,894	$ 106,681	$ 133,612
Restricted Stock Units (RSUs) [Member] | Long-Term Incentive Plan [Member]
Share based compensation performance period	3 years
Shares of common stock granted					25,004
Shares of common stock grant date fair market value					$ 12.54
Stock compensation expense				$ 31,242			62,484
Restricted Stock Units (RSUs) [Member] | Long-Term Incentive Plan [Member] | Officers [Member] | Share-based Compensation Award, Tranche One [Member]
Share based compensation performance based award, percent	50.00%
Restricted Stock Units (RSUs) [Member] | Long-Term Incentive Plan [Member] | Officers [Member] | Share-based Compensation Award, Tranche Two [Member]
Share based compensation performance based award, percent	100.00%
Restricted Stock Units (RSUs) [Member] | Long-Term Incentive Plan [Member] | Officers [Member] | Share-based Compensation Award, Tranche Three [Member]
Share based compensation performance based award, percent	150.00%
Unvested Restricted Stock Units [Member] | Long-Term Incentive Plan [Member]
Stock compensation expense							$ 251,040

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