Annual report pursuant to Section 13 and 15(d)

Revenue from Contracts with Customers (Narrative) (Details)

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Revenue from Contracts with Customers (Narrative) (Details) - USD ($)
Sep. 30, 2019
Sep. 30, 2018
Revenue from Contracts with Customers [Abstract]    
Contract liability $ 249,000 $ 4,000
Unearned revenue   $ 187,000