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Intangibles - Future Amortization Expense Related to Intangible Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Sep. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
2021 $ 433  
2022 334  
2023 204  
2024 130  
2025 29  
Thereafter 153  
Intangible assets, net $ 1,283 $ 2,199