Document And Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2023	Sep. 07, 2023	Dec. 31, 2022
Document Information [Line Items]
Entity Central Index Key	0001006830
Entity Registrant Name	CONSUMERS BANCORP INC /OH/
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2023
Entity File Number	033-79130
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	34-1771400
Entity Address, Address Line One	614 East Lincoln Way
Entity Address, City or Town	Minerva
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44657
City Area Code	330
Local Phone Number	868-7701
Title of 12(g) Security	Common Shares, no par value
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
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 53,283,395
Entity Common Stock, Shares Outstanding		3,096,100
Auditor Name	Plante & Moran, PLLC
Auditor Location	Auburn Hills, MI
Auditor Firm ID	166