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Leases (Schedule of Lease Expenses and Cash Flow Information) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2020
Leases [Abstract]    
Operating lease expense $ 376 $ 765
Variable lease expense 58 108
Short-term lease expense 7 16
Cash paid for amounts included in the measurement of lease liabilities $ 339 $ 683