Note 9 - Deposits (Details Textual) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Deposit Liabilities Reclassified as Loans Receivable	$ 1,453,000	$ 529,000
Related Party Deposit Liabilities	9,743,000	5,806,000
Minimum Average Yearly Cash Balance With Federal Reserve	$ 0	$ 0

Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

+ Details

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

- Definition

Amount of deposits held by the entity for a related party (entity, shareholder, employee).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(1))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

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

- Definition

The minimum average amount of cash balance required to be held each year with federal reserve.

+ References

No definition available.

+ Details

Name:	wbhc_MinimumAverageYearlyCashBalanceWithFederalReserve
Namespace Prefix:	wbhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant