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Insurance Recoveries - Schedule of Business Insurance Recoveries (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Unusual or Infrequent Items, or Both [Abstract]      
Insurance receivable $ 1,197
Business interruption (484)
Net property insurance claims (284) (20)
Business interruption, operating activity 100
Proceeds from property insurance claims $ 100 $ 20