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Summary of Significant Accounting Policies- Property, plant and equipment (Details)
12 Months Ended
Mar. 31, 2022
Furniture and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Property and equipment useful life 3 years
Furniture and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Property and equipment useful life 5 years
Computers and software  
Property, Plant and Equipment [Line Items]  
Property and equipment useful life 3 years
Internal-use software development costs  
Property, Plant and Equipment [Line Items]  
Property and equipment useful life 3 years