Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2023	Aug. 09, 2023
Document Information [Line Items]
Entity Central Index Key	0000885275
Entity Registrant Name	WILSON BANK HOLDING CO
Amendment Flag	true
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Document Type	10-Q/A
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	0-20402
Entity Incorporation, State or Country Code	TN
Entity Tax Identification Number	62-1497076
Entity Address, Address Line One	623 West Main Street
Entity Address, City or Town	Lebanon
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37087
City Area Code	615
Local Phone Number	444-2265
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		11,671,419
Amendment Description	Wilson Bank Holding Company, a Tennessee corporation (the “Company”) is filing this Amendment No. 1 on Form 10-Q/A (the “Amendment”) to amend its original Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2023 (the “Original Form 10-Q”), originally filed with the Securities and Exchange Commission (the “SEC”) on August 9, 2023, for the sole purpose of including revised Exhibits 31.1, 31.2, 32.1 and 32.2, which replace the previously filed versions of those exhibits, solely to correct an inadvertent omission of the signature date on each of those exhibits as filed with the Original Form 10-Q.   Other than the correction of this inadvertent omission of the dates on each of Exhibits 31.1, 31.2, 32.1 and 32.2, no other changes have been made to the Original Form 10-Q, and this Amendment No. 1 does not reflect any subsequent events occurring after the original filing date of the Original Form 10-Q, nor does this Amendment No. 1 modify or update in any way disclosures made in the Original Form 10-Q.