Loans and Leases (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
The risk category of loans by class of loan based on the most recent analysis
Commercial and Other Loans, Gross	$ 15,249	$ 15,938
Commercial Real Estate, Gross	49,300	56,368
Construction and Land Development, Gross	2,012	508
Total Loans	66,561	72,814
Recorded Investment in Loan, risk analysis, Current	63,072	68,624
Recorded Investment in Loan, risk analysis, Past Due 30-59 days	193	582
Recorded Investment in Loan, risk analysis, Past Due 60-89 days		36
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual	3,296	3,572
Pass [Member]
The risk category of loans by class of loan based on the most recent analysis
Commercial and Other Loans, Gross	15,210	15,882
Commercial Real Estate, Gross	39,846	43,067
Construction and Land Development, Gross	1,066	508
Total Loans	56,122	59,457
Recorded Investment in Loan, risk analysis, Current	56,077	59,164
Recorded Investment in Loan, risk analysis, Past Due 30-59 days	45	257
Recorded Investment in Loan, risk analysis, Past Due 60-89 days		36
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual
Special Mention [Member]
The risk category of loans by class of loan based on the most recent analysis
Commercial and Other Loans, Gross
Commercial Real Estate, Gross	2,398	5,807
Construction and Land Development, Gross	946
Total Loans	3,344	5,807
Recorded Investment in Loan, risk analysis, Current	3,344	5,807
Recorded Investment in Loan, risk analysis, Past Due 30-59 days
Recorded Investment in Loan, risk analysis, Past Due 60-89 days
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual
Substandard [Member]
The risk category of loans by class of loan based on the most recent analysis
Commercial and Other Loans, Gross	39	56
Commercial Real Estate, Gross	7,056	6,786
Construction and Land Development, Gross
Total Loans	7,095	6,842
Recorded Investment in Loan, risk analysis, Current	3,651	3,653
Recorded Investment in Loan, risk analysis, Past Due 30-59 days	148	325
Recorded Investment in Loan, risk analysis, Past Due 60-89 days
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual	3,296	2,864
Doubtful [Member]
The risk category of loans by class of loan based on the most recent analysis
Commercial and Other Loans, Gross
Commercial Real Estate, Gross		708
Construction and Land Development, Gross
Total Loans		708
Recorded Investment in Loan, risk analysis, Current
Recorded Investment in Loan, risk analysis, Past Due 30-59 days
Recorded Investment in Loan, risk analysis, Past Due 60-89 days
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual		$ 708

Financing receivable risk analysis recorded investment in current.

No definition available.

Name:	fwv_FinancingReceivableRiskAnalysisRecordedInvestmentInCurrent
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable risk analysis recorded investment in equal to greater than ninety days past due.

+ References

No definition available.

+ Details

Name:	fwv_FinancingReceivableRiskAnalysisRecordedInvestmentInEqualToGreaterThanNinetyDaysPastDue
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable risk analysis recorded investment in nonaccrual status.

+ References

No definition available.

+ Details

Name:	fwv_FinancingReceivableRiskAnalysisRecordedInvestmentInNonaccrualStatus
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable risk analysis recorded investment in sixty to eighty nine days past.

+ References

No definition available.

+ Details

Name:	fwv_FinancingReceivableRiskAnalysisRecordedInvestmentInSixtyToEightyNineDaysPastDue
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable risk analysis recorded investment in thirty to fifty nine days past.

+ References

No definition available.

+ Details

Name:	fwv_FinancingReceivableRiskAnalysisRecordedInvestmentInThirtyToFiftyNineDaysPastDue
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Loans and leases receivable gross carrying amount commercial and other loans.

+ References

No definition available.

+ Details

Name:	fwv_LoansAndLeasesReceivableGrossCarryingAmountCommercialAndOtherLoans
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Loans receivable gross carrying amount construction and land development.

+ References

No definition available.

+ Details

Name:	fwv_LoansReceivableGrossCarryingAmountConstructionAndLandDevelopment
Namespace Prefix:	fwv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	fwv_RiskCategoryOfLoansByClassOfLoanBasedOnMostRecentAnalysisAbstract
Namespace Prefix:	fwv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount before allowance of commercial loans and leases receivable includes, but not limited to, commercial and industrial loans, agricultural loans, mortgage loans, promissory notes, interbank and other loans to financial institutions, draws against credit facilities, trade financing, lease financings. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a),(b))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a, b

-Article 9

+ Details

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

- Definition

Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5066-111524

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(c))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 60

-Paragraph 47

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 51, 52, 53

-IssueDate 2006-05-01

-Chapter 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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