Risks and Concentration - Additional Information (Detail) - Customer |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2005 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Concentration Risk [Line Items] | ||||
| Appreciation (depreciation) of RMB against US$ | (1.20%) | (3.20%) | ||
| Maximum | ||||
| Concentration Risk [Line Items] | ||||
| Appreciation (depreciation) of RMB against US$ | 20.00% | |||
| Cost of Goods, Total | Supplier Concentration Risk | ||||
| Concentration Risk [Line Items] | ||||
| Number of suppliers with purchases greater than 10% of total purchases | 0 | 0 | 0 | |