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Cover - USD ($)
 12 Months Ended
Sep. 30, 2020
Dec. 08, 2020
Mar. 31, 2020
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Sep. 30, 2020    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020    
Current Fiscal Year End Date --09-30    
Entity File Number 001-13992    
Entity Registrant Name RCI HOSPITALITY HOLDINGS, INC.    
Entity Central Index Key 0000935419    
Entity Tax Identification Number 76-0458229    
Entity Incorporation, State or Country Code TX    
Entity Address, Address Line One 10737 Cutten Road    
Entity Address, City or Town Houston    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77066    
City Area Code 281    
Local Phone Number 397-6730    
Title of 12(b) Security Common stock, $0.01 par value    
Trading Symbol RICK    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 83,621,092
Entity Common Stock, Shares Outstanding   8,999,910  
ICFR Auditor Attestation Flag true