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Document and Entity Information
shares in Thousands, $ in Thousands
 12 Months Ended
Jun. 30, 2017
USD ($)
shares
Document and Entity Information [Abstract]  
Entity Registrant Name Kentucky First Federal Bancorp
Entity Central Index Key 0001297341
Trading Symbol KFFB
Amendment Flag false
Current Fiscal Year End Date --06-30
Document Type 10-K
Document Period End Date Jun. 30, 2017
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2017
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Smaller Reporting Company
Entity Public Float | $ $ 0
Entity Common Stock, Shares Outstanding | shares 0