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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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Period Type:	instant

Fair value of investments in debt securities classified as held-to-maturity.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Name Accounting Standards Codification
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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Unused amount of commitments to extend credit to customers.

No definition available.

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Period Type:	instant

Unused amount of commitments to extend credit to customers, measured at fair value.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Deposits and securities sold under agreements to repurchase carrying amount.

No definition available.

Name:	wbhc_DepositsAndSecuritiesSoldUnderAgreementsToRepurchaseCarryingAmount
Namespace Prefix:	wbhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents deposits and securities sold under agreements to repurchase as of the balance sheet date.

No definition available.

Name:	wbhc_DepositsAndSecuritiesSoldUnderAgreementsToRepurchaseEstimatedFairValueDisclosure
Namespace Prefix:	wbhc_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date, stated at fair value.

No definition available.