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Leases - Summary of Other Information Related to Operating Leases (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases [Abstract]    
Operating cash flows from operating leases $ 91 $ 82
Operating lease assets obtained in exchange for new lease liabilities $ 1,336  
Weighted average remaining lease term 6 years 1 year
Weighted average discount rate 3.25% 5.00%