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Summary of Significant Accounting Policies - Significant Customers Representing 10% or more of Revenue or Accounts Receivable, Net (Details) - Customer Concentration Risk
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2021
Mar. 31, 2021
Customer A | Revenue      
Concentration Risk [Line Items]      
Concentration risk 10.00% 10.00%  
Customer A | Accounts Receivable, Net      
Concentration Risk [Line Items]      
Concentration risk     25.00%
Customer B | Revenue      
Concentration Risk [Line Items]      
Concentration risk 10.00%