Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets - Future Amortization Expense (Detail)

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Goodwill and Other Intangible Assets - Future Amortization Expense (Detail) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Finite-lived intangible amortization expense $ (1,100) $ (500)
2020 210  
2021 210  
2022 210  
2023 210  
2024 206  
Thereafter 388  
Net Book Value $ 1,434