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Leases - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Cash Flow, Operating Activities, Lessee [Abstract]    
Operating cash flows from operating leases $ 2,215 $ 6,089
Operating cash flows from finance leases 22 77
Financing cash flows from finance leases $ 297 $ 880