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Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Aug. 31, 2017
Oct. 31, 2017
Feb. 28, 2017
Document And Entity Information [Abstract]      
Document Type 10-K    
Document Period End Date Aug. 31, 2017    
Amendment Flag false    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017    
Entity Registrant Name FRANKLIN COVEY CO    
Entity Central Index Key 0000886206    
Current Fiscal Year End Date --08-31    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Common Stock, Shares Outstanding   13,702,759  
Entity Public Float     $ 171.7