Revision of Prior Year Immaterial Misstatement - Summary of Consolidated Financial Statements (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2019
Jun. 30, 2019
 [1]
Mar. 31, 2019
 [1]
Dec. 31, 2018
 [1]
Sep. 30, 2018
Jun. 30, 2018
 [2]
Mar. 31, 2018
 [2]
Dec. 31, 2017
 [2]
Sep. 30, 2017
Jun. 30, 2017
 [3]
Mar. 31, 2017
 [3]
Dec. 31, 2016
 [3]
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Other charges, net                         $ 8,350 $ 9,184 $ 5,761  
Total operating expenses                         146,358 138,186 121,757  
Income from operations $ 2,429 [1] $ 9,974 $ 11,166 $ 11,132 $ 699 [2] $ 9,492 $ 8,231 $ 9,140 $ 1,436 [3] $ 7,883 $ 7,487 $ 6,333 34,701 [4] 27,562 [4] 23,139 [4]  
Income before income taxes                         24,189 17,842 14,641  
Net income                         19,326 20,960 8,282  
Net income attributable to RCIHH common stockholders 458 [1] $ 5,638 $ 6,735 $ 6,344 $ (3,506) [2] $ 5,389 $ 4,685 $ 14,311 $ (2,239) [3] $ 3,841 $ 3,759 $ 2,898 $ 19,175 $ 20,879 $ 8,259  
Earnings (loss) per share - basic         $ (0.36)       $ (0.23) [3] $ 0.40 $ 0.39 $ 0.30 $ 1.99 $ 2.15 $ 0.85  
Earnings (loss) per share - diluted         $ (0.36)       $ (0.23) [3] $ 0.40 $ 0.39 $ 0.30 $ 1.99 $ 2.15 $ 0.85  
Comprehensive income                         $ 19,106 $ 21,180 $ 8,282  
Comprehensive income attributable to RCI Hospitality Holdings, Inc.                         18,955 21,099 8,259  
Goodwill 53,630       $ 43,591       $ 43,866       53,630 43,591 43,866  
Total assets [4] 353,637       329,732       299,884       353,637 329,732 299,884  
Retained earnings 107,049       88,906               107,049 88,906    
Total RCIHH stockholders' equity 168,457       153,435               168,457 153,435    
Total equity 168,301       153,332       $ 135,225       168,301 153,332 $ 135,225 $ 129,339
Total liabilities and equity $ 353,637       329,732               $ 353,637 329,732    
Previously Reported [Member]                                
Other charges, net                           8,350    
Total operating expenses                           137,352    
Income from operations         1,533                 28,396    
Income before income taxes                           18,676    
Net income                           21,794    
Net income attributable to RCIHH common stockholders         $ (2,672)                 $ 21,713    
Earnings (loss) per share - basic         $ (0.27)                 $ 2.23    
Earnings (loss) per share - diluted         $ (0.27)                 $ 2.23    
Comprehensive income                           $ 22,014    
Comprehensive income attributable to RCI Hospitality Holdings, Inc.                           21,933    
Goodwill         $ 44,425                 44,425    
Total assets         330,566                 330,566    
Retained earnings         89,740                 89,740    
Total RCIHH stockholders' equity         154,269                 154,269    
Total equity         154,166                 154,166    
Total liabilities and equity         330,566                 330,566    
Adjustments [Member]                                
Other charges, net                           834    
Total operating expenses                           834    
Income from operations         (834)                 (834)    
Income before income taxes                           (834)    
Net income                           (834)    
Net income attributable to RCIHH common stockholders         $ (834)                 $ (834)    
Earnings (loss) per share - basic         $ (0.09)                 $ (0.08)    
Earnings (loss) per share - diluted         $ (0.09)                 $ (0.08)    
Comprehensive income                           $ (834)    
Comprehensive income attributable to RCI Hospitality Holdings, Inc.                           (834)    
Goodwill         $ (834)                 (834)    
Total assets         (834)                 (834)    
Retained earnings         (834)                 (834)    
Total RCIHH stockholders' equity         (834)                 (834)    
Total equity         (834)                 (834)    
Total liabilities and equity         $ (834)                 $ (834)    
[1] Fiscal year 2019 income from operations, net income attributable to RCIHH shareholders, and earnings per share included the impact of a $6.0 million in asset impairments in the fourth quarter, a $2.9 million net gain on sale of businesses and assets ($1.2 million in the first quarter, $1.1 million in the second quarter, $0.3 million in the third quarter and $0.4 million in the fourth quarter), and a $0.8 million net gain on insurance ($0.1 million net loss in the third quarter and $0.9 million net gain in the fourth quarter). Quarterly effective income tax expense (benefit) rate was 22.0%, 22.3%, 24.1%, and (371.7%) from first to fourth quarter, respectively.
[2] Fiscal year 2018 income from operations, net income attributable to RCIHH shareholders, and earnings per share included the impact of a $1.6 million loss on disposition in the second quarter, a $5.6 million in asset impairments ($1.6 million in the second quarter and $4.0 million in the fourth quarter), and a $8.8 million deferred income tax benefit related to the revaluation of deferred tax assets and liabilities ($9.7 million credit in the first quarter $38,000 expense in the second quarter, and $827,000 expense in the fourth quarter). Quarterly effective income tax expense (benefit) rate was (134.3%), 24.2%, 25.3%, and 103.8% from first to fourth quarter, respectively. See Note 3 related to revision of prior year immaterial misstatement.
[3] Fiscal year 2017 income from operations, net income attributable to RCIHH shareholders, and earnings per share included the impact of $7.6 million in asset impairment ($1.4 million in the third quarter and $6.2 in the fourth quarter) and $1.3 million additional income tax expense due to change in deferred tax liability rate in the fourth quarter. Quarterly effective income tax expense rate was 33.3%, 33.7%, 32.9%, and 99.6% from first to fourth quarter, respectively.
[4] See Note 3 for a discussion of revision of prior year immaterial misstatement.