Loans and allowance for loan losses - Information about TDRs (Details) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2022 loan	Sep. 30, 2021 USD ($) loan	Dec. 31, 2021 loan
Information About Tdrs Identified During Period Line Items [Line Items]
Number of Loans \| loan	25	1	28
Pre-Modification Recorded Investment		$ 267
Post-Modification Recorded Investment		$ 267
First deed of trust \| Consumer Real Estate Secured By 1-4 Family Residential
Information About Tdrs Identified During Period Line Items [Line Items]
Number of Loans \| loan		1
Pre-Modification Recorded Investment		$ 267
Post-Modification Recorded Investment		$ 267

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Information About Tdrs Identified During Period Line Items

+ References

No definition available.

+ Details

Name:	vbfc_InformationAboutTdrsIdentifiedDuringPeriodLineItemsLineItems
Namespace Prefix:	vbfc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=vbfc_ConsumerRealEstateSecuredBy14FamilyResidentialFirstDeedOfTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=vbfc_ConsumerRealEstateSecuredBy14FamilyResidentialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: