Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers (Narrative) (Details)

v3.21.2
Revenue from Contracts with Customers (Narrative) (Details) - USD ($)
Jun. 30, 2021
Sep. 30, 2020
Revenue from Contracts with Customers [Abstract]    
Contract liability $ 699,000 $ 6,000