Loans and allowance for loan losses - Impaired loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
With an allowance recorded
Recorded Investment	$ 434	$ 413
Unpaid Principal Balance	434	413
Related Allowance	28	11
Total
Recorded Investment	8,046	9,243
Unpaid Principal Balance	8,229	9,426
Related Allowance	28	11
Commercial real estate
With no related allowance recorded
Recorded Investment	5,255	6,234
Unpaid Principal Balance	5,270	6,249
With an allowance recorded
Recorded Investment	259	267
Unpaid Principal Balance	259	267
Related Allowance	3	4
Total
Recorded Investment	5,514	6,501
Unpaid Principal Balance	5,529	6,516
Related Allowance	3	4
Commercial real estate \| Owner occupied
With no related allowance recorded
Recorded Investment	4,172	4,776
Unpaid Principal Balance	4,187	4,791
With an allowance recorded
Recorded Investment	259	267
Unpaid Principal Balance	259	267
Related Allowance	3	4
Total
Recorded Investment	4,431	5,043
Unpaid Principal Balance	4,446	5,058
Related Allowance	3	4
Commercial real estate \| Non-owner occupied
With no related allowance recorded
Recorded Investment	1,083	1,458
Unpaid Principal Balance	1,083	1,458
Total
Recorded Investment	1,083	1,458
Unpaid Principal Balance	1,083	1,458
Consumer real estate secured by 1-4 family residential
With no related allowance recorded
Recorded Investment	2,268	2,411
Unpaid Principal Balance	2,436	2,579
With an allowance recorded
Recorded Investment	175	146
Unpaid Principal Balance	175	146
Related Allowance	25	7
Total
Recorded Investment	2,443	2,557
Unpaid Principal Balance	2,611	2,725
Related Allowance	25	7
Consumer real estate secured by 1-4 family residential \| Home equity lines
With no related allowance recorded
Recorded Investment	300	300
Unpaid Principal Balance	300	300
Total
Recorded Investment	300	300
Unpaid Principal Balance	300	300
Consumer real estate secured by 1-4 family residential \| First deed of trust
With no related allowance recorded
Recorded Investment	1,792	1,873
Unpaid Principal Balance	1,792	1,873
With an allowance recorded
Recorded Investment	141	146
Unpaid Principal Balance	141	146
Related Allowance	6	7
Total
Recorded Investment	1,933	2,019
Unpaid Principal Balance	1,933	2,019
Related Allowance	6	7
Consumer real estate secured by 1-4 family residential \| Second deed of trust
With no related allowance recorded
Recorded Investment	176	238
Unpaid Principal Balance	344	406
With an allowance recorded
Recorded Investment	34
Unpaid Principal Balance	34
Related Allowance	19
Total
Recorded Investment	210	238
Unpaid Principal Balance	378	406
Related Allowance	19
Commercial and industrial loans
With no related allowance recorded
Recorded Investment	7,612	8,830
Unpaid Principal Balance	7,795	9,013
Commercial and industrial loans \| Commercial and industrial loans (except those secured by real estate)
With no related allowance recorded
Recorded Investment	89	185
Unpaid Principal Balance	89	185
Total
Recorded Investment	89	185
Unpaid Principal Balance	$ 89	$ 185

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

No definition available.

+ Details

Name:	vbfc_ImpairedFinancingReceivableWithRelatedAllowance
Namespace Prefix:	vbfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=vbfc_ConsumerRealEstateSecuredBy14FamilyResidentialSecondDeedOfTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=vbfc_CommercialAndIndustrialLoansPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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