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Summary of Significant Accounting Policies - Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Defined Benefit Plan Disclosure [Line Items]      
Property and equipment $ 32,904 $ 2,044  
Property and equipment 3,432    
Indefinite-lived intangibles 50,454 2,008  
Definite-lived intangibles 27,986    
Goodwill 20,608 2,096  
Goodwill 663    
Current assets 681    
Asset held for sale   3,007  
Goodwill      
Defined Benefit Plan Disclosure [Line Items]      
Unrealized Gain (Loss/Impairments) Recognized (566) (6,307) $ (7,944)
Property and equipment      
Defined Benefit Plan Disclosure [Line Items]      
Unrealized Gain (Loss/Impairments) Recognized (1,029) (2,202) (302)
Indefinite-lived intangibles      
Defined Benefit Plan Disclosure [Line Items]      
Unrealized Gain (Loss/Impairments) Recognized (293) (5,296) (2,265)
Operating lease right-of-use assets      
Defined Benefit Plan Disclosure [Line Items]      
Unrealized Gain (Loss/Impairments) Recognized 0 0 (104)
Other assets (equity securities)      
Defined Benefit Plan Disclosure [Line Items]      
Unrealized Gain (Loss/Impairments) Recognized 0 (84) $ (64)
Quoted Prices in Active Markets for Identical Asset (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Property and equipment 0 0  
Property and equipment 0    
Indefinite-lived intangibles 0 0  
Definite-lived intangibles 0    
Goodwill 0 0  
Goodwill 0    
Current assets 0    
Asset held for sale   0  
Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Property and equipment 0 0  
Property and equipment 0    
Indefinite-lived intangibles 0 0  
Definite-lived intangibles 0    
Goodwill 0 0  
Goodwill 0    
Current assets 0    
Asset held for sale   3,007  
Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Property and equipment 32,904 2,044  
Property and equipment 3,432    
Indefinite-lived intangibles 50,454 2,008  
Definite-lived intangibles 27,986    
Goodwill 20,608 2,096  
Goodwill 663    
Current assets $ 681    
Asset held for sale   $ 0