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Significant Accounting Policies - Summary of Estimated Useful Lives of Assets on Depreciation Calculated (Detail)
 12 Months Ended
Mar. 31, 2021
Computers [Member] | Bottom of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 3 years
Computers [Member] | Top of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 6 years
Furniture and Fixtures [Member] | Bottom of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 5 years
Furniture and Fixtures [Member] | Top of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 6 years
Office Equipment [Member] | Bottom of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 1 year
Office Equipment [Member] | Top of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 7 years
Motor Vehicles [Member] | Bottom of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 3 years
Motor Vehicles [Member] | Top of Range [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 7 years
Building [Member]  
Disclosure Of Property Plant And Equipment [Line Items]  
Estimated useful lives of assets 20 years