XML 82 R49.htm IDEA: XBRL DOCUMENT
v3.22.4

Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Nature of Operations and Summary of Significant Accounting Policies |  |
Effective income tax rate reconciliation, change in enacted tax rate, amount | $ 0 |
Maximum deferrable under annual incentive award percent | 50.00% |
Dilutive effects | $ 0 | $ 0
Federal Home Loan and Reserve Bank Stock |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Cash, uninsured amount | $ 21,541,000 | $ 74,752,000
Company buildings | Minimum |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Estimated useful lives (in years) | 10 years |
Company buildings | Maximum |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Estimated useful lives (in years) | 39 years |
Furniture and equipment | Minimum |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Estimated useful lives (in years) | 3 years |
Furniture and equipment | Maximum |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Estimated useful lives (in years) | 7 years |
Computer software | Minimum |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Estimated useful lives (in years) | 1 year |
Computer software | Maximum |  |
Nature of Operations and Summary of Significant Accounting Policies |  |
Estimated useful lives (in years) | 3 years |

X
- Definition Maximum deferrable under annual incentive award, percent. + References No definition available. + Details
Name: | ubcp_MaximumDeferrableUnderAnnualIncentiveAwardPercent
Namespace Prefix: | ubcp_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | ubcp_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | ubcp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashUninsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
Name: | us-gaap_DilutiveSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=123427490&loc=d3e32059-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
Name: | us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=ubcp_InvestmentInFederalHomeLoanAndReserveBankStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |