Cover - USD ($)	12 Months Ended
	Dec. 31, 2023	Mar. 14, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	000-26121
Entity Registrant Name	LCNB Corp.
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	31-1626393
Entity Address, Address Line One	2 North Broadway
Entity Address, City or Town	Lebanon
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	45036
City Area Code	513
Local Phone Number	932-1414
Title of 12(b) Security	Common Stock, No Par Value
Trading Symbol	LCNB
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 154,001,456
Entity Common Stock, Shares Outstanding		13,224,276
Entity Central Index Key	0001074902
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false