Name:	us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Average nonaccrual loans.

No definition available.

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

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

No definition available.

Name:	wvfc_LoansAndLeasesReceivableImpairedInterestIncomeForegoneNet
Namespace Prefix:	wvfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Loans And Leases Receivable, Impaired, Interest Income Recognized.

No definition available.

Name:	wvfc_LoansAndLeasesReceivableImpairedInterestIncomeRecognizedExtended
Namespace Prefix:	wvfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_FirstMortgageLoansLandAcquisitionAndDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

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

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