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Goodwill and Other Intangible Assets - Schedule of Indefinite-lived, Definite-lived Intangible Assets and Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Definite- Lived Intangibles      
Beginning balance $ 23,599 $ 26,935  
Acquisitions 23 2,005  
Impairment (590) (1,813)  
Dispositions (687) 0  
Amortization (2,494) (3,528)  
Ending balance 19,851 23,599 $ 26,935
Indefinite- Lived Intangibles      
Beginning balance 155,546 117,114  
Acquisitions 0 43,948  
Impairment (11,936) (5,516)  
Dispositions 0 0  
Ending balance 143,610 155,546 117,114
Goodwill      
Beginning balance 70,772 67,767  
Acquisitions 0 7,244  
Impairment (8,861) (4,239) (566)
Dispositions 0 0  
Ending balance $ 61,911 $ 70,772 $ 67,767
Impairment of intangible asset indefinite lived excluding goodwill statement of income or comprehensive income extensible enumeration not disclosed flag Impairment Impairment