Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Oct. 05, 2021
Details
Registrant Name	UNITED BANCSHARES INC /PA
Registrant CIK	0000944792
SEC Form	10-Q/A
Period End date	Mar. 31, 2018
Fiscal Year End	--12-31
Tax Identification Number (TIN)	23-2802415
Number of common stock shares outstanding		843,050
Filer Category	Non-accelerated Filer
Current with reporting	No
Amendment Description	The sole purpose of this amendment to our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018, originally filed with the Securities and Exchange Commission on September 17, 2021, is to furnish Exhibit 101 to the Form 10-Q which contains the XBRL (eXtensible Business Reporting Language) Interactive Data File for the financial statements and notes included in Part 1, Item 1 of the Form 10-Q.
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	0-25976
Entity Incorporation, State or Country Code	PA
Entity Address, Address Line One	30 S. 15th Street
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19102
City Area Code	(215)
Local Phone Number	351-4600
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Amendment Flag	true
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1