v2.4.0.6
Document And Entity Information (USD $)
12 Months Ended
Jun. 30, 2013
Sep. 03, 2013
Dec. 31, 2012
Document Information [Line Items]      
Entity Registrant Name CONSUMERS BANCORP INC /OH/    
Entity Central Index Key 0001006830    
Current Fiscal Year End Date --06-30    
Entity Filer Category Smaller Reporting Company    
Trading Symbol CBKM    
Entity Common Stock, Shares Outstanding   2,724,388  
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jun. 30, 2013    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2013    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 19,967,759