Document And Entity Information - shares
 9 Months Ended
May 31, 2021
Jun. 30, 2021
Document And Entity Information [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date May 31, 2021  
Document Transition Report false  
Entity File Number 1-11107  
Entity Registrant Name FRANKLIN COVEY CO.  
Entity Incorporation, State or Country Code UT  
Entity Tax Identification Number 87-0401551  
Entity Address, Address Line One 2200 West Parkway Boulevard  
Entity Address, City or Town Salt Lake City  
Entity Address, State or Province UT  
Entity Address, Postal Zip Code 84119-2099  
City Area Code 801  
Local Phone Number 817-1776  
Title of 12(b) Security Common Stock, $.05 Par Value  
Trading Symbol FC  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   14,156,827
Amendment Flag false  
Entity Central Index Key 0000886206  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2021  
Current Fiscal Year End Date --08-31