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Long-Term Debt, Financing Leases and Other Borrowings - Schedule of Principal Maturities of Long-term Debt (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Sep. 30, 2019
Long Term Debt By Maturity [Abstract]    
Remainder of 2020 $ 178,459  
2021 162,494  
2022 133,663  
2023 79,268  
2024 55,677  
Thereafter 168,219  
Long-term debt $ 777,780 $ 858,145