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Goodwill and Other Intangibles Future Amortization Expense (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
2021 $ 1,616  
2022 3,233  
2023 2,830  
2024 1,591  
2025 and thereafter 7,039  
Total expected future amortization expense $ 16,309 $ 68