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Goodwill and Intangible Assets - Schedule of Estimated Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
2020—remaining $ 4,776  
2021 6,132  
2022 5,737  
2023 3,765  
2024 1,778  
2025 1,148  
Net $ 23,336 $ 24,405