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v3.25.1

Condensed Consolidated Statements of Income (Parenthetical) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Condensed Consolidated Statements of Income |  |
Special Dividend Paid | $ 0.175 | $ 0.15

X
- Definition Represents the amount of special dividend paid per share + References No definition available. + Details
Name: | ubcp_SpecialDividendPaid
Namespace Prefix: | ubcp_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeStatementAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration