Name:	us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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The amount of interest income on impaired and nonperforming loans that is due to the change in present value attributable to the passage of time.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5278-111524

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

Name:	us-gaap_LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Average nonaccrual loans.

No definition available.

Name:	wvfc_AverageNonaccrualLoans
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Loans And Leases Receivable, Impaired, Interest Income Foregone, Net.

No definition available.

Name:	wvfc_LoansAndLeasesReceivableImpairedInterestIncomeForegoneNet
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The principal balance outstanding on nonaccrual loans.

No definition available.

Name:	wvfc_PrincipalOutstandingNonaccrualLoans
Namespace Prefix:	wvfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wvfc_FirstMortgageLoansOneToFourFamilyDwellingsMember
Namespace Prefix:
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wvfc_FirstMortgageLoansConstructionMember
Namespace Prefix:
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wvfc_FirstMortgageLoansLandAcquisitionAndDevelopmentMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
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