Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 26, 2016	Jun. 30, 2015
Document and Entity Information [Abstract]
Document Type	10-K/A
Amendment Flag	true
Document Period End Date	Dec. 31, 2015
Entity Registrant Name	FIRST UNITED CORP/MD/
Entity Central Index Key	0000763907
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Trading Symbol	func
Entity Common Stock, Shares Outstanding		6,254,620
Entity Public Float			$ 49,657,427
Amendment Description	This Amendment No. 1 on Form 10-K/A to the Annual Report of First United Corporation on Form 10-K for the year ended December 31, 2015, which was initially filed with the Securities and Exchange Commission (the "SEC) on March 9, 2016 (the "Original Report"), is being filed to restate First United Corporation's audited consolidated financial statements for the year ended December 31, 2015 contained therein and to make related revisions to certain other items of the Original Report. Specifically, Items 6, 7, 8 and 9A of Part II of the Original Report have been amended to correct the application of generally accepted accounting principles to the transfer of eight trust preferred securities from First United Bank & Trust to First United Corporation during the quarter ended December 31, 2015. The effects of the restatement are discussed in Note 2 to the restated audited consolidated financial statements included in Item 8 of Part II hereof. Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, new certifications by First United Corporation's principal executive officer and principal accounting officer are filed or furnished with this Amendment No. 1 as Exhibits 31.1, 31.2, 32.1 and 32.2, so Item 15 of Part IV of the Original Report has also been amended. Except as expressly provided above, this Amendment No. 1 on Form 10-K/A speaks as of the date of the Original Report and First United Corporation has not updated the disclosures contained in any item thereof to speak as of a later date. All information contained in this Amendment No. 1 on Form 10-K/A is subject to updating and supplementing as provided in First United Corporation's reports filed with the SEC subsequent to the date on which the Original Report was filed.