Note 5 - Loans and Leases - Summary of Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Number of modifications	3
Recorded investment	$ 1,295
Allowance for loan and lease losses allocated	$ 342
Residential Portfolio Segment [Member]
Number of modifications		2
Recorded investment		$ 140
Allowance for loan and lease losses allocated
Commercial and Multi-Family Real Estate [Member]
Number of modifications	2
Recorded investment	$ 545
Allowance for loan and lease losses allocated
Commercial Portfolio Segment [Member]
Number of modifications	1
Recorded investment	$ 750
Allowance for loan and lease losses allocated	$ 342

Amount of allowance for credit losses related to troubled debt restructuring.

No definition available.

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Namespace Prefix:	uboh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

+ Details

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

+ Details

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- Details

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- Details

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- Details

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