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Summary of Significant Accounting Policies - Narrative (Details)
3 Months Ended 6 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment          
% of total 100.00% 100.00%   100.00% 100.00%
Accounts Receivable | Five Customers          
Property, Plant and Equipment          
% of total     39.00% 27.00%